Axial Piston Variable Double Pump A8VO 055

RE 93 010/06.98

RE 93 010/06.98 replaces: 03.97

Variable Double Pump A8VO for open circuits Sizes 28...160 Series 6 Nominal pressure 350 bar Peak pressure 400 bar

A8VO...SR

Features

Index Features

1

Ordering Code

2...3

Technical Data

4...7

SR - Summation Power Control (hyperbolic regulator, regulator, sizes 28-107) 8...9 LR - Individual Power Control (hyperbolic regulator, regulator, sizes 55-107) 10...11 LA1 - Individual Power Control (spring regulator, regulator, sizes 55-160) 12...13 Unit Dimensions, Size 28

14...15

Unit Dimensions, Size 55 Unit Dimensions, Size 80

16...19 20...23

Unit Dimensions, Size 107

24...27

Unit Dimensions, Size 160 28...29 Power ower Takeake-Of Offf, Auxil Auxilia iary ry Pump Pump and and Valve alvess (siz (sizes es 5555-16 160) 0) 30 Dimensions for Power Take-Off 31...33 Dimensions for Valves

A8VO

34

– Variable ariable double double pump with with two axial axial tapered tapered piston rotary groups of bent axis design, for open circuit hydraulic drives. – One One comm common on suct suctio ionn por portt – Flow isis proportiona proportionall to drive drive speed speed and displac displacement ement and and is infinitely variable between qV max and qV min = 0 – Comprehensiv Comprehensivee program program of control devices devices availab available le – The pump pump is suitab suitable le for direct direct mountin mountingg to flywheel flywheel housing housing of of the diesel engine – The drive drive shaft shaft bearing bearing (tandem (tandem taper taper roller roller bearing) bearing) isis designed to meet the requirement for long service life and high working pressures – Summation Summation power power control control (mechanical (mechanically ly coupled) coupled) and individual power control – Power Power take-off take-off,, for mounting mounting of axial piston and and gear pumps pumps – Integral Integral auxilia auxiliary ry pump with pressur pressuree relief relief valve valve,, optional additionally with pressure reducing valve – External External adjustmen adjustmentt of control control possibl possiblee while in operation operation

1/36

RE 93 010/06.98

Ordering Code Hydraulic fluid Mineral oil (no code) Axial piston unit Variable bent axis design

A8V

Operation Pump in open circuits

O

Size Displacement Vg max (cm3), per rotary group

28

55

80 107 160

28

55 55

80 80 107 160









–

SR

SR3









–

SR3

with three circuit power control con trol (3rd pump LR-variable pump) SRC









–

SRC

with load limiting control

SG1









–

SG1

with on-off switching

SRZ









–

SRZ

with three circuit power control (fixed pump) and on-off switching

SR3Z









–

SR3Z

with three circuit power control (LR-variable pump) and on-off switching SRCZ









–

SRCZ

with load limiting control and on-off switching









–

SG1Z

Control device Summation power control (mech. coupled), hyperbolic regulator SR with three circuit power control (3rd pump fixed pump)

Individual power control, hyperbolic regulator with three circuit power control

SG1Z LR3

H2

–







–

LR3H2

with cross sensing control

LRC

H2

–







–

LRCH2

with three circuit power control and cross sensing control

LR3C

H2

–







–

LR3CH2

with load limiting control

L G1

H2

–







–

LG1H2

–









LA1H1

–









LA1H2

–









LA1KH1

with hydraulic stroke limiter, positive control H2

Individual power control with load limiting control, spring regulator with hydraulic stroke limiter, negative control LA1 H1 with hydraulic stroke limiter, positive control LA1 with hydraulic coupling and hydraulic stroke limiter H1 LA1K H1 with hydraulic stroke limiter, negative control H1 with hydraulic stroke limiter, positive control H2

H2

Series 6 Index

28

55

80 107 160



–

–

–

–

0

–









1

Direction of rotation viewed on shaft end: clockwise

R

Gear ratio (n ratio (ninput / nrotary groups)

28

55

80 107 160

i=1

–









1

i = 0,73



–

–

–

–

3

28

55

80 107 160







28

55

80 107 160







Seals NBR (nitril-caoutchouc), shaft seal in FKM (fluor-caoutchouc) Shaft end Splined shaft DIN 5480

Brueninghaus Hydromatik

2/36









N

Z

A8VO

RE 93 010/06.98

A8 V O

/

6

R

– N Z G 05

Axial piston unit Operation Size Control device Series Index Direction of rotation Gear ratio Seals Shaft end Mounting flange

28

55

80 107 160







SAE J617c (to fit flywheel housing of internal combustion engine)



G



Service line connections Press Pressur uree port portss Suct Suctiion port port

SAE at side side (met (metri ricc thr threa eads ds)) SAE SAE at at rea rearr (me (metr triic thr threa eads ds))

05

Auxiliary pump

28

55 55

80 80 107 160

without integral auxiliary pump, without power take-off t ake-off (PTO)











K00

with integral auxiliary pump, without power take-off (PTO)

–









F00

without integral auxiliary pump, with power take-off (PTO)











K...

with integral auxiliary pump, with power take-off (PTO)

–









F...





















– – – – – – – – – – –

















–

–





















...01 ...02 ...04 ...07 ...17 ...28 ...41 ...29 ...60 ...30 ...32 ...36 ...33

Power take-off

flange/c e/cent entering dia.

hub

SAE A, 2-hole/ø82 SAE B, 2-hole/ø101 SAE B, 2-hole/ø101 SAE C, 2-hole/ø127 SAE D, 4-hole/ø152 ISO, 4-hole/ø80 ISO, 4-hole/ø80 ISO, 4-hole/ø100 ISO, 4-hole/ø100 ISO, 4-hole/ø125 ISO, 4-hole/ø125 ISO, 4-hole/ø140 ISO, 4-hole/ø140

SAE A (N5/8"-9T 16/32DP) SAE B (N7/8"-13T 16/32DP) SAE B-B (N1"-15T 16/32DP) SAE C (N11/4"-14T 12/24DP) SAE D (N13/4"-13T 8/16DP) N20, DIN 5480 N25, DIN 5480 N25, DIN 5480 N30, DIN 5480 N30, DIN 5480 N35, DIN 5480 N35, DIN 5480 N40, DIN 5480

Valve

























– – –



















without/with auxiliary pump: K..

F..

without valve (only for model without auxiliary pump, K..)

 1)

–

0

with pressure relief valve (only for model with auxiliary pump, F..)

– 1)



1

–



3

–



4

with pressure relief valve and pressure reducing valve, U=12 V (only for model with auxiliary pump, F..) with pressure relief valve and pressure reducing valve, U=24 V (only for model with auxiliary pump, F..) 1) Size 28 is delivered in the variations without

PTO and with SAE A-PTO with pressure with pressure relief valve as standard design (K001, K011), in the variation with SAE B-PTO without pressure without pressure relief valve as standard design (K020),

 = available

A8VO

 =

available on enquiry

– = not available

3/36


RE 93 010/06.98

Technical Data Fluid We request that before starting a poject detailed information about the choice of pressure fluids and application conditions are taken from our catalogue sheets RE 90220 (mineral oil), RE 90221 (environmentally acceptable hydraulic fluids) and RE 90223 (fire resistant hydraulic fluids, HF). When using HF- or environmentally acceptable hydraulic fluids possible limitations for the technical data have to be taken into consideration. If necessary please consult our technical department (please indicate type of the hydraulic fluid used for your application on the order sheet). The The operation with HFA-, HFB and HFC- hydraulic fluids requires additional special measures. Operating viscosity range In order to obtain optimum efficiency and service life, we recommend that the operating viscosity (at operating temperature) be selected from within the range: νopt = operating viscosity 16...36 mm2/s

Notes on the selection of the hydraulic fluid In order to select the correct fluid, it is necessary to know the operating temperature in the circuit (open circuit) in relation to the ambient temperature. The hydraulic fluid should be selected so that within the operating temperature range, the operating viscosity lies within the optimum range ( ν νopt. ) (see shaded section of the selection diagram). We recommend that the highe highest st possible viscosity range should be chosen in each case. Example: At an ambient temperature of X ° C the operating temperature in the tank is 60°C. Within the operating viscosity range νopt; shaded area) this corresponds to viscosity ranges VG 46 or ( ν VG 68; VG 68 should be selected. Important: The Important: The leakage oil (case drain oil) temperature is influenced by pressure and pump speed and is always higher than the tank temperature. However, However, at no point in the circuit may the temperature exceed 115°C. If it is not possible to comply with the above conditions because of extreme operating parameters or high ambient temperatures please consult us.

referred to the circuit temp erature (closed circuit). Viscosity limits The limiting values for viscosity are as follows: νmin = 5 mm2/s

short term at a max. permissible temp. of tmax = 115°C. Please note that the max. fluid temperature is also not exceeded in certain areas (for instance bearing area). 600 m mm m2/s νmax = 1600 short term on cold start (tmin = -40°C). At temperatures of -25°C up to -40°C special measures are required. Please contact us for further information. Selection diagram

2500-40° 1600 1000 600 400

-20°

0°

20°

40°

60°

80° 100°

1600

V V V V V G G G G G 2 2 3 8 1 0 0 2 4 6 6

200 100 60 s /

2

m m n i

40

36 νopt.

20 y ν

t i s o c s i v

16

10

5 -40°

-25°

-10° 0° 10°

30°

50°

70°

90°

5 115°

temperature t in in °C

tmin = -40°C Brueninghaus Hydromatik

fluid temperature range 4/36

tmax = +115°C A8VO

RE 93 010/06.98

Technical Data Filtration The finer the filtration the better the achieved purity grade of the pressure fluid and the longer the life of the axial piston unit. To ensure the functioning of the axial piston unit a minumum purity grade of 9 to NAS 1638 6 to SAE 18/15 to ISO/DIS 4406 is nnecessary. ecessary. At very high temperatures of the hydraulic fluid fluid (90°C to max. 115°C) at least cleanless class

Working pressure range - inlet Absolute pressure at port S (suction inlet) pabs min

_________________________ ______________________________________ __________________________ ______________ _

0,8 bar

pabs max _________________________ ______________________________________ __________________________ _______________ __ 1,5 bar Working pressure range - outlet Pressure at port A1 or A2 nominal pressure

_________________________ ___________________________________ __________

pn = 350 bar

peak pressure _________________________ _____________________________________ ____________ pmax = 400 bar

8 to NAS 1638 5 to SAE 17/14 to ISO/DIS 4406 is nnecessary. ecessary. If above mentioned grades cannot be maintained please consult supplier. Temperature range of the radial shaft seal The FKM shaft seal is admissible for a housing temperature range from -25°C to +115°C. Note: For applications below -25°C a NBR shaft seal is necessary (admissible temperature range -40°C to +90°C). When ordering, please state in clear text: with NBR shaft seal

Case drain The drain oil chamber is connected to the suction and gear chambers. A drain line to tank is not required. Installation position With the drive shaft in horizontal position; alternative mounting positions are possible - please consult us. The pump housing must be filled with fluid prior the commissioning, and must remain full whenever it is operating. For extensive information on installation position, please consult our data sheet RE 90270 before completing your design work. Direction of rotation Clockwise, viewed on drive shaft Input Via flexible coupling

A8VO

5/36


RE 93 010/06.98

Technical Data Table of values (theoretical values (theoretical values, without considering ηmh and ηv: values rounded) Size of double pump

size

28

55

80

107

160

Displacement

V g max

cm3

28,1

54,8

80

107

160

cm3

V g min

0

0

0

0

0

0,738

1,0

1 ,0

1,0

1,0

rpm

2300

2500

2240

2150

1900

Max. perm. input speed (speed limit) with increased inlet pressure pabs at suction port S (see diagram)

n 0 max perm. rpm

2630

3000

2750

2450

2100

Max. flow 2)

at n0 max 1 (Vg max)

q V 0 max 1 L/min

2 x 85

2 x 133

2 x 174

2 x 223

2 x 295

Max. input power

at ∆p1 + ∆p2 = 700 bar and at qV 0 max 1

P 0 max 1

kW

72,5 3)

160

209

268

304 4)

Max. input torque

at Vg max and at ∆p1 + ∆p2 = 700 bar

T 0 max 1

Nm

218 3)

611

891

1192

1528 4)

Moment of inertia

J

kgm2

0,015

0,017

0,027

0,044

0,067

Weight (approx.)

m

kg

60

78

100

115

220

Gear ratio

i = ninput/nrotary groups

Max. input speed 1)

at Vg max

n 0 max 1

1)

The values values shown shown are valid valid for an absolute absolute pressure pressure (pabs) 1 bar at the suction inlet S and when operated on mineral oil. By increasing the inlet pressure (pabs > 1 bar), pump speeds can be increased up to the "max. perm. speed (speed limit)" (see diagram, page 7)

2)

3 % volumet volumetric ric loss loss inclu included ded

3)

∆p1 + ∆p2 = 500 bar (size 28)

4)

∆p1 + ∆p2 = 600 bar (size 160)

Variation: with integral auxiliary pump, F00, F.. Size of double pump

size

Displacement of integral auxiliary pump

cm3

V g max

Input speed of integral auxiliary pump

ninput i

naux. pump =

i (g (gear ratio)

28

55

80

107

160

–

8,2

8,2

10

19

–

0,887

0,780

0,843

0,831

28

55

80

107

160

Variation: with PTO, K.., F.. Size of double pump

size

Max. torque on PTO

T max max

Nm

150

250

350

500

640

ninput i

i (g (gear ratio)

0,738

1,0

1,0

1,0

0,831

Input speed of PTO

nsec. PTO =

Calculation of size Output flow

qv =

Torque

T=

Power

P=

Vg • n • ηv 1000 1,59 • Vg • ∆p 100 • ηmh T • n 9549


=

in L/min =

Vg • ∆ p 20 • π • ηmh

2 π • T • n 60 000

=

qv • ∆p 600 • ηt

in Nm in kW

6/36

Vg

= displacement displacement per revolut revolution ion in in cm3

∆p = diff differ eren enti tial al pres pressu sure re in bar bar

n ηmh

= speed in rpm = volume volumetri tricc effici efficiency ency = mechanical-h mechanical-hydra ydraulic ulic efficiency efficiency

ηt

= overall overall effici efficiency ency

ηv

A8VO

RE 93 010/06.98

Technical Data Calculation of the inlet pressure p abs at suction inlet S or of the reduction in flow with increased speed. 1,22 (speed limit) 1,2 1 x a m 0

1,5 1,4 1,2 1,1 1,0 0,9 0,8

1,1

n n

1,0

d e e p s

0,9 0,8 0,6

0,7

displacement

0,8 Vg

0,9

r a b n i s b a

p e r u s s e r p t e l n i

1 ,0

Vg max

Example: Giv Given: en: size ize 80 80, inp input ut spee speedd 25 2560 rpm rpm Requir Required: ed: necess necessary ary pressu pressure re pabs at suction inlet S Solution:

speed ratio

n = 2560 = 1,14 n0 max 1 2240

gives an inlet pressure pabs = 1,3 bar at full swivel angle (Vg max). If free inlet flow can only be achieved, for example, with pabs = 1 bar, then the pump displacement must be reduced to 0,88 • Vg max. Inport Inportant ant:: Max. Max. perm. perm. speed speed n0 max perm. (speed limit). Min. and max. perm. pressure at port S.

A8VO

7/36


RE 93 010/06.98

SR Summation Summatio n Power Power Control (hyperbolic regulator, sizes 28-107) The summation power control SR is a pressure dependent pilot Summation power control SR, sizes 55-107 operated control which steplessly adjusts the coupled rotary groups, (without power take-off and without auxiliary pump) thus varying the displacement. The swivel range is from Vg max to Vg min = 0. The flow is varied as a function of the system pressures so as to produce a constant drive torque on the prime mover. For example, if one pump requires little power, the remaining power becomes available to the other pump. In extreme cases, either pump can be supplied with maximum power. Summation power control means control by means of the summated pressures (pB1 + pB2). The sum of the two working pressures is halved via the pressure transducer. transducer. This This half summated pressure acts on o n a rocker arm via the measuring area of the control contro l spool in the control piston. An externally adjustable spring force acts on the other side of the rocker arm and determines the torque setting. If pressure rises beyond the set spring force, the control valve is operated and the double pump swivels towards Vg min until a torque balance on the rocker arm is restored. When not under pressure, the double pump is swivelled back to its starting position (Vg max) by means of a control spring. The precise control to the hyperbolic curve gives optimum power utilisation.

Summation power control with three circuit power control and hydraulic on-off switching SR3Z, size 28 (with power take-off and with pressure relief valve)

At constant input speed, constant input power is therefore obtained.

r a b n i

B

p e r u s s e r p g n i k r o w

400 350

400 350

300

300

250

250

200

200

150 100

150 100

50

50

0 pB1

0 0,2 pB2 0 Vg min

350 bar e l o g r n t a n r o c g f o n i t t t r a e t s s

50 bar 0,4

0,6

displacement

0,8

1,0

Vg max

pB1= pressure from pump 1 pB2= pressure from pump 2

Variation: hydraulic on-off switching, Z

Pressure range at start of control 100 - 700 bar summated pressure The output power curve is influenced by the th e efficiency of the double pump. When ordering, state in clear text: – inpu inputt pow power er P (kW (kW)) – inpu inputt spe speed ed n (rpm (rpm)) – max. max. outp output ut flow flow qV max (L/min) After all technical details have been clarified, a power diagram can be produced by computer. computer.


When not under pressure double pump is swivelled back to a minimum displacement (Vg min) by means of a positioning pressure at the port Y3. If the port X7 is loaded with control pressure the 2-way valve is switched, the hydraulic on-off switching being deactivated. Permissible pilot pressure at port X7: pSt min _________________________ _____________________________________ _________________________ ___________________ ______ 5 bar pSt max _________________________ _____________________________________ _________________________ __________________ _____ 50 bar At port Y3 an external control pressure of 30 bar is needed for the control.

8/36

A8VO

RE 93 010/06.98

SR

Summation Power Power Control Control ...

Override of the power setting

Summation power control with three circuit power control SR3 (high pressure signal from fixed pump)

Variation: three circuit power control SR3, SRC Depending on the working pressure of the pump mounted at the PTO, the power adjustment of the summation power controls is changed (port X3). Thus the summation power control can be set to 100% of the total power. power. The The power setting of the summation power control will only be reduced if the working pressure of the pump mounted at the PTO increases dependent on load. The required power drop is brought about by adaption of the measuring area of the three circuit valve to the size of the third pump. SR3 SR3 ____ ___ high pressure signal from fixed pump SRC SRC ____ ____ high pressure signal from power controlled contro lled variable pump Variation: load limiting control SG1 In contrast to three circuit power control con trol load limiting control works by loading the power control with an external pilot pressure . This pilot pressure acts on the adjustment spring of the summation power control via port X3.

Summation power control with three circuit power control SRC (high pressure signal from power controlled variable pump)

The force resulting from the pilot pressure is acting against the adjustment spring of the power regulator, i.e. increasing the pilot pressure reduces the power output (load limiting control with negative power override). The mechanical adjusted basic power setting can be varied by means of different pilot pressures, enabling different power mode settings. If the pilot pressure signal is then varied by means of a load limiting controller the total hydraulic power is equal to the drive input power powe r. The pilot pressure used for power control is generated by an external control element or or by the built-on pressure reducing valve. The electrical signal for the input control of the pressure reducing valve must be produced by an external control electronic . For this purpose the microcontroller MC7 is available in connection with the software GLB (electronic load limiting control for excavators). Further informations: – Microcontrol Microcontroller ler MC ___________ _________________ ___________ ________ ___ RE 95050 95050 – Electronic Electronic load load limitin limitingg control control for excav excavators ators,, GLB GLB __ RE 95072 95072

Load limiting control with hydraulic on-off switching SG1Z (with power take-off, pressure relief valve and pressure reducing valve)

2 B

p + 1 B


0

A8VO

pSt pHD (SG1) (SR3/C)

displacement

V g max

9/36


RE 93 010/06.98

LR

Individual Individ ual Power Power Control (hyperbolic (hyper bolic regulator, sizes 55-107)

Unlike the summation power control, on the variable double pump with individual power control LR the two rotary groups are not mechanically coupled, i.e. each rotary group has its own individual control.

Override of the power setting Variation: cross sensing control, LRC

pB = working pressure Vg = displacement

The cross sensing control is in principle a summation power control, although the flows of the two rotary groups can be different. Each rotary group can transmit up to 100% of the total drive power, if the other requires little or no power pow er.. Via cross coupling arrangement the working pressures act via a measuring spool on the opposite pump and adjust the force of the adjustment spring (power setting). With increasing working pressures, the power of each pump is reduced to 50% of the th e total drive power po wer..

The power setting of each control is carried out separately and need not be the same, but the sum of the two settings must not exceed the drive power. power.

If one pump is working at less than 50% of the total drive power, power, the second pump can automatically utilise the remaining power – in extreme cases up to 100% of the total drive power.

Optimum power usage is obtained by accurately following the power hyberbola. Working pressure applies a force on a piston within the control piston on to a rocker arm. An externally adjustable spring force is applied to the other side of the rocker arm to determine the power setting. Should the working pressure exceed the set spring force, the pilot control valve is operated via the rocker arm, allowing the pump to swivel towards zero output. This This in turn reduces the effective moment on the arm of the rocker, rocker, thus allowing the working pressure to rise in the same ratio by which the output flow is reduced (pB • Vg = constant).

Power made available via the pressure cut-off function or other overriding controls is not taken into account.

The constant power control controls the output volume of the pump in relation to the working pressure so that, at a constant input speed, the preset input power is not exceeded. pB • Vg = constant

Individual power control with three circuit power control, cross sensing control and hydraulic stroke limiter, positive control, LR3CH2

When not under pressure, the double pump is swivelled back to its starting position (Vg max) by means at a control spring. 400 400 350 350 r a 300 300 b n i 250 250 B p e 200 200 r u s s 150 e 150 r p 100 g 100 n i k 50 50 r o w 0 0 0,2 0,4 0,6 pB1 pB2 0 Vg min diplacement

R3 R1

350 bar l o e r g t n n o a c r f g o n t i t t r a e t s s

X1 Y3 A2

50 bar 0,8

1,0 Vg max

X3 S

The output power curve is influenced by the th e efficiency of the double pump. When ordering, state in clear text: – inpu inputt pow power er P (kW (kW)) – inpu inputt spe speed ed n (rpm (rpm))

A1 Y3

– max. max. outp output ut flow flow qV max (L/min)

X1

After all technical details have been clarified, a power diagram can be produced by computer. computer.

R2


10/ 10/36

A8VO

RE 93 010/06.98

LR

Individual Power Power Control Control ...

Override of the power setting

Characteristic curve: curve: three circuit power power control LR3, load limiting control LG1

Variation: three circuit power control, LR3 Depending on the working pressure of the pump mounted at the PTO, PTO, the power adjustment of the individual power controls contro ls is changed (port X3). Thus the individual power control can be set to 100% of the total power. power. The The power setting of the individual power control will only be reduced if the working pressure of the pump mounted at the PTO increases dependent on load. The required power drop is brought about by adaption of the measuring area of the three circuit valve to the size of the third pump.

2 B

p + 1 B


pSt pHD (LG1) (LR3)

0

Variation: load limiting control, LG1 In contrast to three circuit power control con trol load limiting control works by loading the power control with an external pilot pressure . This pilot pressure acts on the adjustment spring of o f the individual power control via the ports X3. The The force resulting from the pilot pressure is acting against the adjustment spring of the power regulator, i.e. increasing the pilot pressure reduces the power output (load limiting control with negative power override).

diplacement

Individual power control with load limiting control and hydraulic stroke limiter, positive control, LG1H2

The mechanical adjusted basic power setting can be varied by means of different pilot pressures, enabling different power mode settings. If the pilot pressure signal is then varied by means of a load limiting controller the total hydraulic power is equal to the drive input power powe r. The pilot pressure used for power control is generated by an external control element or or by the built-on pressure reducing valve. The electrical signal for the input control of the pressure reducing valve must be produced by an external control electronic . For this purpose the microcontroller MC7 is available in connection with the software GLB (electronic load limiting control for excavators). Further informations microcontroller micro controller MC: RE 95050, software GLB: RE 95072.

R3 R1

X1 Y3 A2

Hydraulic stroke limiter, LR.H2 / LG1H2 Function: V g min to Vg max (positive control)

X3

The hydraulic stroke limiter allows the maximum displacement to be infinitely varied or limited as required. Control range Vg max to Vg min . The displacement is set by means of the pilot pressure applied at port X1 (max. 40 bar). The hydraulic stroke limiter is overriden by the constant power powe r control, i.e. below the power curve (power hyperbola), displacement is adjusted in relation to pilot pressure. If the set flow or the working pressure is such that the power curve is exceeded, the constant power control overrides the stroke limiter and reduces displacement until the power hyperbola is restored. As pilot pressure increases the pump swivels towards higher displacement.

S

A1 Y3 X1

R2

Characteristic curve: hydraulic stroke limiter, H2

Starting position at zero pressure: Vg max At working pressure > 20 bar the pump swivels from Vg max to Vg min (pilot pressure < start of control) Start of control (at Vg min), settable _______________ 4 – 15 bar When ordering, please state required start of control in clear text. Pilot pressure increase (Vg min – Vg max) ___________ ___________ ∆p = 25 bar A pressure of 20 bar is needed for the control. The oil required for this is taken either from the high pressure or from the external control pressure at port Y3 (≥ 20 bar). A8VO

V g max

11/ 11/36

e g n a r g n i t t e s

40 35 r 30 a b 25 n i t S 20 p e 15 r u s s 10 e r p 4 t o l i p

0 Vg min

0,5 displacement

1 ,0 Vg max


RE 93 010/06.98

LA1

Individual Individ ual Power Power Control (spring regulator, regulator, sizes 55-160)

The variable displacement displacement double pump with constant power control con trol LA1 has no mechanical linkage of the two rotary groups. Each rotary group is equipped with an individual constant power control. The constant power control regulates the pump displacement according to the working pressure so that a defined input power will not be exceeded.

Hydraulic stroke limiter, LA1H...

Load limiting control

As pilot pressure increases the pump swivels towards lower displacement. Starting position at zero pressure: Vg max

The hydraulic stroke limiter allows the displacement to be infinitely varied or limited as required. Control range Vg max to Vg min .

The displacement is set by means of the pilot pressure applied at port X1 (max. 40 bar). The hydraulic stroke limiter is overriden by the constant power powe r control, The power setting can be adjusted individual for each regulator with i.e. below the power curve, displacement is adjusted in relation to different values, whereby each pump can be set se t at 100% input power. pilot pressure. If the set flow or the working pressure is such that th e The hyperbolic control curve is adjusted for a new ne w defined value by 2 power curve is exceeded, the constant power control overrides the measuring springs. The working pressure operates on measuring stroke limiter and reduces displacement until the power curve is surface of a step piston against a spring and a spring force externally restored. adjustable, which determins the power setting. H1  Function: V g max to Vg min (negative control) The second measuring surface of the step piston is louded by an external pilot pressure (port X3), the adjusted power can be lowered (load limiting control with negative power override).

If the summation of the hydraulic forces exceeds the spring force, control oil is supplied the control piston which swivels the pump back to lower flow value.

Start of control (at Vg max), settab settable le ______ _________ ______ ____ _ 4 – 15 bar When ordering please state requires start of control in clear text. Pilot pressure increase (Vg max – Vg min) ___________ ___________ ∆p = 20 bar

The mechanical adjusted basic power setting can be varied by means of different pilot pressures, enabling different power mode settings. If the pilot pressure signal is then varied by means of a load limiting controller the total hydraulic power is equal to the drive input power powe r. The pilot pressure used for power control is generated by an external control element or by the built-on pressure reducing valve. The electrical signal for the input control of the pressure reducing valve must be produced by an external control electronic . For this purpose the microcontroller MC7 is available in connection with the software GLB (electronic load limiting control for excavators). Further informations microcontroller microc ontroller MC: RE 95050, software GLB: RE 95072. When not under pressure, the double pump is swivelled back to its starting position (Vg max) by means at a control spring.


40 35 r 30 a b 25 n i t S 20 p e 15 r u s 10 s e r p g n i k r o w

4 0 Vg min

0,5

1,0

displacement

Vg max

H2  Function: V g min to Vg max (positive control) As pilot pressure increases the pump swivels towards higher displacement. Starting position at zero pressure: Vg max

r a b n i

B

400

400

350

350

300

300

250

250

p e 200 r u s s e 150 r p g 100 n i k r 50 o w

0 pB1

At working pressure >20 bar the pump swivels from Vg max to Vg min (pilot pressure < start of control) Start of control (at Vg min), settabl settablee ___________ _______________ ____ 4 – 15 bar bar When ordering, please state required start of control in clear text. l o e r g t n n o a c r f g o n t i t t r a e t s s

200 150 100 50 0 0,2 0,4 0,6 pB2 0 Vg min diplacement

0,8

1 ,0

Vg max

The output power curve is influenced by the th e efficiency of the double pump. When ordering, state in clear text: – inpu inputt pow power er P (kW (kW)) – inpu inputt spe speed ed n (rp (rpm) m) – max. max. outp output ut flow flow qV max (L/min) After all technical details have been clarified, a power diagram can be produced by computer. computer. Brueninghaus Hydromatik

Pilot pressure increase (Vg min – Vg max) ___________ ___________ ∆p = 20 bar A pressure of 20 bar is needed for the control. The oil required for this is taken either from the high pressure or from the external control pressure at port Y3 (≥ 20 bar).


40 35 r 30 a b n 25 i 20 p e r 15 u s s 10 e r p 4 t S

t o l i p

0 Vg min

0,5 displacement

1,0 Vg max

Please note: The H1/H2 characteristic curve is influence by the setting of the power control

12/ 12/36

A8VO

RE 93 010/06.98

LA1

Individual Power Power Control Control ...

Individual power control with load limiting control and hydraulic stroke limiter, negative control, LA1H1

Variation: hydraulic coupling, LA1K By means of the hydraulic coupling the two individual power regulators principally become one summation power control. The The two rotary groups, however, are not coupled mechanically me chanically but hydraulically.

(with power take-off, take-off, without auxiliary pump)

The working pressures of both circuits take each their effect onto the differential piston of the two individual regulators, regulators, causing causing a common swivelling out and swivelling back of both rotary groups. If one pump is working at less than 50% of the total drive power, power, the second pump can automatically utilise the remaining power – in extreme cases up to 100% of the total drive power. The hydraulic coupling can be overridden with the supplementary function hydraulic stroke limitation H1, i.e. depending on the pilot pressure at port X1 one of the two rotary groups can be swivelled back to Vg min. Individual power control with load limiting control, hydraulic coupling and hydraulic stroke limiter, negative control, LA1KH1 (with power take-off, take-off, auxiliary pump, pressure relief valve and pressure reducing valve)

Individual power control with load limiting control and hydraulic stroke limiter, positive control, LA1H2 (with power take-off, auxiliary auxiliary pump and pressure relief valve)

Please note: Gauge ports M1 and M2 are not available for size 55. A8VO

13/ 13/36


RE 93 010/06.98

Unit Dimensions, Size 28 Before finalising your design, please request a certified drawing.

Summation power control, SR View X

flange SAE4

W

drawn dephased

Detail Z

Detail W Shaft ends 2 1 M

Z Splined shaft W 30x2x30x14x9g DIN 5480

M16; 24 deep

2 3 ø

28 50

(241)

M10; 17 deep

Connections A1, A2

Service line ports

S

Suction port

R1 R2 R3 G A3 M1, M2 M X3 X7 Y3

Bleed port Oil drain Bleed port Control pressure port Pilot pressure port (pressure relief valve) Gauge ports for high pressure Gauge port for control pressure Pilot pressure port (SR3/SRC) Pilot pres ressure port for onon-off swit witching (SRZ) External control pressure port (SRZ)


SAE 3/4" 420 bar (6000 psi) high pressure series SAE 3" 140 bar (2000 psi) standard series M14x1,5 (plugged) M14x1,5 (plugged) M26x1,5 (plugged) M12x1,5 (plugged) M14x1,5 M14x1,5 (plugged) M14x1,5 (plugged) M14x1,5 M14 M14x1,5 M14x1,5

14/ 14/36

Please note: Use suction port with flat contact surface!

A8VO

RE 93 010/06.98


Summation power control with three circuit power control and hydraulischer on-off switching, SR3Z (high pressure signal from fixed displacement pump) View X

Summation power control with three circuit power control, SRC (high pressure signal from power controlled variable displacement pump) View X

A8VO

15/ 15/36


RE 93 010/06.98


Summation power control, SR View X flange SAE4

W

drawn dephased

Detail Z

Detail W

M16; 24 deep A1;A2

M10; 17 deep Shaft ends

Z Splined shaft W40x2x30x18x9g DIN 5480

6 1 M

2 4 ø

36 58

(291)

Connections A1, A2

Service line ports

S

Suction port

A3 R1,R3 R2 G M M3 X1 X3 X7 Y3

Service line port (auxiliary pump) Bleed port Oil drain Control pressure port (SR) Gauge port for control pressure (SR) Gauge port for load limiting control (LA1) Pilot pressure port for hydraulic stroke limiter Pilot pressure port for three circuit power-/load limiting control Pilot pressure port for on-off switching (SRZ) Exte Extern rnaal con contr trol ol pres pressu sure re (SRZ, SRZ, LR3 LR3, LG1 LG1,, LA1 LA1H2 H2))


SAE 3/4" 420 bar (6000 psi) high pressure series SAE 3" 140 bar (2000 psi) standard series M18x1,5 M14x1,5 (plugged) M14x1,5 (plugged) M12x1,5 (plugged) M14x1,5 (plugged) M14x1,5 (plugged) M14x1,5 M14x1,5 M14x1,5 M14x M14x11,5 (pl (plugge ugged) d)

16/ 16/36

A8VO

RE 93 010/06.98


Summation power control with three circuit power control, SR3 (high pressure signal from fixed displacement pump; with pressure relief valve) View X

Summation power control with three circuit power control, SRC (high pressure signal from power controlled variable displacement pump) View X

Summation power control with load limiting control and hydraulischer on-off switching, SG1Z (with pressure relief valve and pressure reducing valve) View X

A8VO

17/ 17/36


RE 93 010/06.98


Individual power control (hyperbolic regulator) cross sensing control and hydraulic stroke limiter, positive control, LRCH2 View X 270

30,5

139

Y3 X1

X1

X1 0 0 2

5 2

8 0 1

X

3 4

8 8 1

W

A2

A1

S

Z

243 322 355

54 84 99

Detail W

1 92 207

Detail Z 75

23,8 A1;A2 9 1 ø

8 , 0 5

4 , 6 0 1

S

M10; 17 deep

61,9

M16; 24 deep

Individual power control (hyperbolic regulator) with three circuit power control and hydraulic stroke limiter, positive control, LR3H2 Individual power control (hyperbolic regulator) with load limiting control and hydraulic stroke limiter, positive control, LG1H2 View X 30,5 270

Y3

139

X3

X1

X1

X1 0 0 2 8 0 1

5 2

X

3 4

S 2 8 1

243 322 345


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A8VO

RE 93 010/06.98


Individual power control (spring regulator) with load limiting control and hydraulic stroke limiter, positive control, LA1H2 View X

W

Detail Z

Detail W

A1;A2

M10; 17 deep

A8VO

19/ 19/36

M16; 21 deep


RE 93 010/06.98


Summation power control, SR View X flange SAE3

W

drawn dephased Detail W

Detail Z

A1;A2

M12; 17 deep M16; 21 deep

Shaft ends


7 4 ø

6 1 M

36 58

(323)

Connections A1, A2

Service line ports

S

Suction port (SR, LR) Suction port (LA1)

A3 R1, R3 R2 G M1, M2 M M3 X1 X3 X7 Y3

Service line port (auxiliary pump) Bleed port Oil drain Control pressure port (SR) Gauge port A1, A2 (LA1) Gauge port for control pressure (SR) Gauge port for load limiting control Pilot pressure port for hydraulic stroke limiter Pilot pressure port for three circuit power-/load limiting control Pilot pressure port for on-off switching (SRZ) External control pressure (SRZ, LR3, LG1)


SAE 1" 420 bar (6000 psi) high pressure series SAE 4" 35 bar SAE 3 1/2" 35 bar (500 psi) standard series M18x1,5 M14x1,5 (plugged) M14x1,5 (plugged) M12x1,5 (plugged) M14x1,5 (plugged) M14x1,5 (plugged) M14x1,5 (plugged) M14x1,5 M14x1,5 M14x1,5 M14x1,5 20/ 20/36

A8VO

RE 93 010/06.98


Summation power control with three circuit power control, SR3 high pressure signal from fixed displacement pump) View X

Summation power control with three circuit power control, SRC (high pressure signal from power controlled variable displacement pump; with pressure relief valve) View X

Summation power control with load limiting c ontrol and hydraulic on-off switching, SG1Z (with pressure relief valve and pressure reducing valve) View X

A8VO

21/ 21/36


RE 93 010/06.98


Individual power control (hyperbolic regulator) cross sensing control and hydraulic stroke limiter, positive control, LRCH2 View X 301

34

155

Y3 X1

X1

X1

4 1 7 1 , 8 2

X

7 4

W 5 9 1

A2

A1

S

Z

269

60,5 352 374

94,5

215,5

113,5

Detail W

234,5

Detail Z 90

27,8 5 2

A1;A2

2 , 7 5

7 , 0 2 1

S

M12; 17 deep 69,9

M16; 24 deep

Individual power control (hyperbolic regulator) with three circuit power control and hydraulic stroke limiter, positive control, LR3H2 Individual power control (hyperbolic regulator) with load limiting control and hydraulic stroke limiter, positive control, LG1H2 View X

301

Y3

34

155 X3

X1

X1

X1

4 1 1

7 , 8 2

X

7 4

S 5 9 1

269 352 374


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A8VO

RE 93 010/06.98


Individual power control (spring regulator) with load limiting control, hydraulic coupling and hydraulic stroke limiter, negative control, LA1KH1 View X

W

Detail Z

Detail W

A1;A2 M12; 17 deep M16; 21 deep

A8VO

23/ 23/36


RE 93 010/06.98


Summation power control, SR

View X

flange SAE2

W

drawn dephased

Detail W

Detail Z M16; 21 deep

A1;A2

M12; 17 deep Shaft ends


6 1 M

2 5 ø

36 58

(345)

Connections A1, A2

Service line ports

S

Suction port

A3 R1, R3 R2 G M1, M2 M M3 X1 X3 X7 Y3

Service line port (auxiliary pump) Bleed port Oil drain Control pressure port (SR) Gauge port A1, A2 (LA1) Gauge port for control pressure (SR) Gauge port for load limiting control Pilot pressure port for hydraulic stroke limiter Pilot pressure port for three circuit power-/load limiting control Pilot pressure port for on-off switching (SRZ) External control pressure (SRZ, LR3, LG1)


SAE 1" 420 bar (6000 psi) high pressure series SAE 4" 35 bar (500 psi) standard series M18x1,5 M14x1,5 (plugged) M14x1,5 (plugged) M12x1,5 (plugged) 9/16-18UNF-2B (plugged) M14x1,5 (plugged) M14x1,5 (plugged) M14x1,5 M14x1,5 M14x1,5 M14x1,5 24/ 24/36

A8VO

RE 93 010/06.98


Summation power control with three circuit power control and hydraulic on-off switching, SR3Z (high pressure signal from fixed pump) View X

Summation power control with three circuit power control, SRC (high pressure signal from power controlled variable pump) View X

Summation power control with load limiting c ontrol and hydraulic on-off switching, SG1Z (with pressure relief valve and pressure reducing valve) View X

A8VO

25/ 25/36


RE 93 010/06.98


Individual power control (hyperbolic regulator) with three circuit power control, cross sensing control and hydraulic stroke limiter, positive control, LR3CH2 View X

370 Y3

X1 Y3

134

X1

X1 Y3

X3

2 3 1 5

8 9 1

X

X3

W

A1

S

A2

Z

290 375 405

67 101 120

Detail W

235 25 5

Detail Z 100

27,8 5 2

A1;A2

2 , 7 5

S

2 , 0 3 1

M12; 17 deep 77,8

M16; 21 deep

Individual power control (hyperbolic regulator) with three circuit power control and hydraulic stroke limiter, positive control, LR3H2 Individual power control (hyperbolic regulator) with load limiting control and hydraulic stroke limiter, positive control, LG1H2 View X

134

370 Y3

X1 Y3 X3

X1

X3 X1 Y3

2 3 1 5

X S

8 9 1

290 375


26/ 26/36

A8VO

RE 93 010/06.98


Individual power control (spring regulator) with load limiting control and hydraulic stroke limiter, positive control, LA1H2

View X

W

Detail W

Detail Z

A1;A2

M12; 17 deep M16; 21 deep Individual power control (spring regulator) with load limiting control, hydraulic coupling and hydraulic stroke limiter, negative control, LA1KH1 View X

A8VO

27/ 27/36


RE 93 010/06.98


Individual power control (spring regulator) with load limiting control and hydraulic stroke limiter, negative control, LA1H1 (with pilot oil pump and pressure relief valve)

View X

flange SAE1

W

drawn dephased

Detail W

Detail Z

A1;A2

Shaft ends


M12; 19 deep 6 1 M

M16; 23 deep

2 5 ø

36 58

Connections A1, A2

Service line ports

S

Suction port

A3 R1, R3 R2 M3 X1 X3 Y3

Service line port (auxiliary pump) Bleed port Oil drain Gauge port for load limiting control Pilot pre presssure po port fo for hy hydraulic st stroke oke lilimiter Pilot pr pressure po port fo for lo load lilimiting co control External control pressure (LA1H2)


SAE 1 1/4" 420 bar (6000 psi) high pressure series SAE 5" 35 bar (500 psi) standard series M18x1,5 M22x1,5 (plugged) M22x1,5 (plugged) M14x1,5 (plugged) M14 M14x1,5 M14x1,5 M14x1,5

28/ 28/36

A8VO

RE 93 010/06.98


Individual power control (spring regulator) with load limiting control and hydraulic stroke limiter, positive control, LA1H2 View X

Individual power control (spring regulator) with load limiting control, hydraulic coupling and hydraulic stroke limiter, negative control, LA1KH1 View X

A8VO

29/ 29/36


RE 93 010/06.98

Power Take-Off, Auxiliary Pump and Valves (sizes 55-160) Variation: without power take-off, with integral auxiliary pump (pilot oil pump) and pressure relief valve, F001 See table, page 6, for technical data.

Variation: with power take-off, without integral auxiliary pump, K..0 See table, page 6, for technical data.

The pressure relief valve installed to protect the integral auxiliary pump has a fixed setting of 30 bar.

Variation: with power take-off, with integral auxiliary pump (pilot oil pump) and pressure relief valve, F..1 See table, page 6, for technical data. The pressure relief valve installed to protect the integral auxiliary pump has a fixed setting of 30 bar. For mounting on PTO: Gear pumps and axial piston pumps

For mounting on PTO: Gear pumps and axial piston pumps

Variation: with power take-off, take-off, with integral auxiliary pump (pilot oil pump), pressure relief valve and pressure reducing valve, F..3/F..4 F..3/F..4 See table, page 6, for technical data. The pressure relief valve installed to protect the integral auxiliary pump has a fixed setting of 30 bar. bar. An electrical adjustable pressure reducing valve can be used for override the power setting (load limiting control). Control voltage of pressure reducing valve: F..3 ..3  12 V DC, F..4 F.. 4  24 V DC For mounting on PTO: Gear pumps and axial piston pumps


30/ 30/36

A8VO

RE 93 010/06.98

Dimensions for Power Take-Off Take-Off (SAE) Before finalising your design, please request a certified drawing.

Power take-off: SAE A (F01/K01) Size 28

splined hub SAE A (N 5/8"-9T 16/32 DP)

Sizes 55...160

Size 28 55 80 107 160

A2 12 10,1 12 11 13

A3 32 35,1 37 36 38

A4 8 10,1 10,1 10,1 10

suitable for connection of: – gear pump G2 (RE10030) – varia variable ble pump pump A10VSO A10VSO10 10 (RE927 (RE92713) 13) – varia variable ble pump pump A10VSO A10VSO18 18 (RE 92712 92712))

M10; 15 deep M10; 15 deep (sizes 55, 80) M10; 14 deep (size 107)

A1 140 178 190 195 357

(to mounting flange)

Power take-off: SAE B (F02/K02) Size 28

splined hub SAE B (N 7/8"-13T 16/32 DP)

Sizes 55...160

Size 28 55 80 107 160

M12; 18 deep

M12; 18 deep (to mounting flange)

A1 141 185 197 206 346

A2 13 13,1 13,1 13,1 14

A3 42 48,1 48,1 48,1 49

suitable for connection of: – gear pumpe G3 – gear pump G4 – varia variable ble pump pump A10V A10VG18 G18 – varia variable ble pump pump A10V A10VO28 O28

A4 10 10 10 10 6,8

(RE 10038) (RE 10042) (RE 9275 92750) 0) (RE 9270 92701/ 1/ RE 92703)

Power take-off: SAE B-B (F04/K04) splined hub SAE B-B (N 1"-15T 16/32 DP) Size 55 80 107 160

A2 13,1 13,1 13,1 14

A3 51,1 49 49 52

A4 10 10 10 10

suitable for connection of: – vari variab able le pump pump A4VG A4VG28 28 – varia variable ble pump pump A10V A10VG28 G28 – varia variable ble pump pump A10V A10VG45 G45 – varia variable ble pump pump A10V A10VO45 O45

M12; 18 deep (to mounting flange)

A8VO

A1 185 197 206 346

31/ 31/36

(RE (RE 920 92003 03)) (RE 9275 92750) 0) (RE 9275 92750) 0) (RE 9270 92701/ 1/ RE 92703) – varia variable ble pump pump A11V A11VO40 O40 (RE 9250 92500) 0)


RE 93 010/06.98

Dimensions for Power Take-Off (SAE) Before finalising your design, please request a certified drawing.

Power take-off: SAE C (F07/K07) splined hub SAE C (N 1 1/4"-14T 12/24 DP) Size 55 80 107 160

A1

A2

A3

A4

197 206 347

26,1 15,1 14

66,1 60,1 59

13 13 13

suitable for connection of: – vari variab able le pump pump A4VG A4VG40 40 – vari variab able le pump pump A4VG A4VG56 56 – vari variab able le pump pump A4VG A4VG71 71 – varia variable ble pump pump A10V A10VO71 O71 – varia variable ble pump pump A11V A11VO60 O60

M16

(RE (RE 920 92003 03)) (RE (RE 920 92003 03)) (RE (RE 920 92003 03)) (RE 92701 92701)) (RE 92500 92500))

(to mounting flange) Power take-off: SAE D (F17/K17) splined hub SAE D (N 1 3/4"-13T 8/16 DP)

Size A1 107 160 352

A2

A3

A4

19

81

14

suitable for connection of: – variab riablle pum pumpp A4V A4VG90 G90 – vari variab able le pump pump A4VG A4VG12 1255 – varia variable ble pump pump A10VO A10VO140 140 – vari variab able le pump pump A11V A11VO9 O955 – varia variable ble pump pump A11VO A11VO130 130

M20

(RE 92003 2003)) (RE (RE 920 92003 03)) (RE 9270 92701) 1) (RE (RE 925 92500 00)) (RE 9250 92500) 0)

(to mounting flange)


32/ 32/36

A8VO

RE 93 010/06.98

Dimensions for Power Take-Off (ISO) Before finalising your design, please request a certified drawing.

Power take-off: Flange ISO 4-hole/ø80, hub N20 (F28/K28) N20x1,25x30x14x9H, DIN 5480 Size A1 55 80 190 107 160

A2

A3

A4

23

59

10

suitable for connection of: – fixed pu pump A2FO10 (RE 91 91401) – fixed pu pump A2FO12 (RE 91 91401) M8; 12 deep (to mounting flange) Power take-off: Flange ISO 4-hole/ø100, hub N25 (F29/K29) N25x1,25x30x18x9H, DIN 5480 Size 55 80 107 160

A1 185 197 206

A2 30 30,1 29,1

A3 70 70 78,1

A4 10 10 7,7

suitable for connection of: – fixed pu pump A2FO23 (RE 91 91401) – fixed pu pump A2FO28 (RE 91 91401) M10; 15 deep (to mounting flange) Power take-off: Flange ISO 4-hole/ø125, hub N30 (F30/K30) N30x2x30x14x9H, DIN 5480 Size 55 80 107 160

A1 162 174 183 324

A2 32 32

A3 67 67

A4 27 27

suitable for connection of: – fixed pu pump A2FO45 (RE 91 91401) – fixed pu pump A2FO56 (RE 91 91401) – vari variab able le pump pump A7VO A7VO55 55 (RE (RE 922 92202 02)) M12; 18 deep (size 55) M12; 16 deep (size 80) (to mounting flange) A8VO

33/ 33/36


RE 93 010/06.98

Dimensions for f or Valves Before finalising your design, please request a certified drawing.

Design with pressure relief valve: F..1 View X

pressure relief valve

Design with pressure relief valve and pressure reducing valve: F..3, F..4 View X

pressure relief valve and pressure reducing valve

Size 55 80 107 160

B1 113 122 128 242

B2 210 232 252 287


B3 22 33 57 29

B4 241 263 283 318

B5 1 ,4 3 ,4 1 –

34/ 34/36

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RE 93 010/06.98

A8VO

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RE 93 010/06.98

Brueninghaus Hydromatik GmbH The specified data is for product description purposes only and may not be deemed to be guaranteed unless expressly confirmed in the contract.

Plant Elchingen Glockeraustraße Glockeraustraße 2 • D–89275 Elchingen Phon Phonee +49 +49 (0) (0) 73 08 / 8282-00 Telefax elefax +49 (0) (0) 73 73 08 / 72 72 74

All rights reserved – Subject to revision

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A4VG

Axial Piston Variable Double Pump A8VO 055

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