Bosch Rexroth BVD 52 Series Quick Start Manual Download Page 1

Page: 1 / 16

RE 95528/05.2016,

Bosch Rexroth AG

Contents

Type code

Technical data

Characteristic curves for counterbalance spool 33

Functional description

Example applications

Dimensions 8
BVE installation variants for winch drives

Mounting of the counterbalance valve

Project planning notes

Safety instructions

Features

▶ Damping for stable lowering and safe downhill movement

▶ Simple adaptation to application

▶ Compact design and direct mounting to axial piston

motors A6VM and A6VE

▶ Available in a set with axial piston motors A6VM and A6VE

▶ Standard working ports according to SAE J518

▶ Integrated brake release port, with or without pressure

reduction

▶ Good efficiency through reduced flow losses

▶ Four working ports (see type code, pos. 04)

▶ Rotationally symmetric

▶ Suitable for high flow rates

▶ Size 32

▶ Nominal pressure

Motor side 450 bar
Pump side 350 bar

▶ For winches and track drives in open circuit

Counterbalance valve
BVD/BVE Series 52

RE 95528

Edition: 05.2016

Summary of Contents for Rexroth BVD 52 Series

Page 1: ...ent Simple adaptation to application Compact design and direct mounting to axial piston motors A6VM and A6VE Available in a set with axial piston motors A6VM and A6VE Standard working ports according to SAE J518 Integrated brake release port with or without pressure reduction Good efficiency through reduced flow losses Four working ports see type code pos 04 Rotationally symmetric Suitable for hig...

Page 2: ...ening threads 07 Metric port threads with profiled sealing ring according to DIN 3852 N Long spring cover see page 11 08 On port side C lift via port C C On port side D lift via port D D Seal 09 FKM fluoroelastomer V Counterbalance spool 10 Version 33 33 Opening characteristics of counterbalance spool 11 Standard 0 Residual opening in counterbalance spool 12 Without K00 Damping D1 channel to count...

Page 3: ...3 With orifice installed on port side D D03 Standard special version 15 Standard version 0 Standard version with installation variant e g ports open or closed contrary to standard Y Special version S Available Not available Notice Note the project planning notes on page 13 In addition to the type code please specify the relevant technical data when placing your order 01 02 03 04 05 06 07 08 09 10 ...

Page 4: ...pool The actual pump pressure is reduced by the throttle chain from D1 and D2 and controls the counterbalance spool Circuit diagram BVD D1 D1 D2 D2 MKC MKD Gext D C G L D C Port side on the pump side Counter balance spool Motor side Table of values Valve type BVD W BVD V BVE W Nominal pressure p bar On the pump side 350 350 350 motor side 450 450 450 Flow nominal qv max l min 650 650 650 Start of ...

Page 5: ...ssure differential p bar The above parameters are based on Oil viscosity ν approx 21 mm2 s Oil temperature ϑ 50 C Counterbalance spool fully open Notice Pressure Δp of approx 20 to 50 bar is normal for deter mining the maximum flow in winch drives If the desired flow pressure difference does not match the counterbalance spool described here please contact us Pressure differential D D or C C via va...

Page 6: ...ne flow direction e g for lowering with pulling loads See BVE circuit diagram on page 7 Brake release Version S Counterbalance valve with shuttle valve and port Gext plugged without brake release valve pressure reduction The respective high pressure is balanced via the shuttle valve and is available at port Gext for venting the mechanical holding brake The brake vent function without pressure redu...

Page 7: ... winches with weak damping D4599 E g A6VM215HP5D1P001B 71MWV0S4A29W0 0 BVE32W38S 52ND V330K00C4599D03S00 mounted to a Rexroth winch gearbox Winch drive application Circuit diagram example for winch drive in cranes BVE T2 T1 M1 Vg min Vg max G X U MKC Gext MKC D C D C G L D1 D2 S1 MKD MKD L D1 D2 P T A B MB MA As an alternative to the above example other Bosch Rexroth axial piston motors A6VM and A...

Page 8: ...ons Long spring cover on port side C lift via port C 66 7 MKC MKD GEXT G L C D L MKC MKD GEXT M14 M14 MKC 31 8 473 4 3 BVE 405 6 3 364 6 2 BVD 250 79 38 38 174 3 84 6 ø15 2 ø6 4 o 98 154 0 5 101 174 2 158 5 1 158 5 3 130 3 291 2 M61 M61 X C D Gext Detail X With shuttle valve and port Gext version S 1 DIN912 ...

Page 9: ...ong spring cover on port side D lift via port D MKC MKD G L C D L MKC MKD GEXT MKC X C D o 98 154 0 5 101 M61 158 5 1 158 5 3 M61 291 2 174 2 130 3 M14 M14 38 38 79 174 3 84 GEXT 6 ø15 2 ø6 4 31 8 66 7 473 4 3 BVE 405 6 3 364 6 2 BVD 250 Gext Detail X With shuttle valve and port Gext version S 1 DIN912 ...

Page 10: ...hannel to motor4 ø4 2 10 O VF Threaded plug for filter channel4 DIN 6149 M16 1 5 13 deep 400 X MK Measuring pressure in counterbalance spool DIN 38523 M14 1 5 12 deep 400 X 1 Depending on the application momentary pressure peaks can occur Keep this in mind when selecting measuring devices and fittings 2 Only dimensions according to SAE J518 metric fastening thread is a deviation from the standard ...

Page 11: ...ffect at the motor port plate A B Beginning of control motor Beginning of control Vg max Beginning of control Vg max Counterbalance valve type with long spring cover on port side D 1 BVE32 52 D BVE32 52 D Installation variants MKC MKD GEXT C D MKD GEXT D C MKC Counterbalance valve type with long spring cover on port side C 1 BVE32 52 C BVE32 52 C Installation variants MKD GEXT D C MKC MKC MKD GEXT...

Page 12: ...n two steps in the specified sequence from 1 to 8 see figure below In the first step the screws must be tightened with half the tightening torque and in the second step with the maxi mum tightening torque see table below MKD MKD MKC 3 7 6 2 1 5 8 4 MKC Gext Thread Property class Tightening torque Nm 1 M14 10 9 172 B12 B2 B3 B4 MKC Axial piston motor A6VM 65 A6VE 65 A6VM 71 A6VE 71 Size 200 200 215...

Page 13: ...r system manufacturer must ensure that the connecting elements and lines correspond to the specified application conditions pressure flow hydraulic fluid temperature with the necessary safety factors The working ports and function ports are only intended to accommodate hydraulic lines System optimization reduction for the first prototype is recommended with regard to the valve block axial piston m...

Page 14: ...alve Selection of the counterbalance spool for the required flow in accordance with characteristic curves on page 5 If the desired flow is not within the range of the counterbal ance spool supplied please contact us Residual opening in counterbalance spool In winch drive and track drive applications any residual open ing is prohibited since otherwise the load would not stay suspended For that reas...

Page 15: ...n e g impure hydraulic fluid abrasion or residual dirt from components As a result the hydraulic fluid flow and the build up of torque in the axial piston unit can no longer respond correctly to the operator s specifications Even the use of various filter elements external or internal flow filter will not rule out a fault but merely reduce the risk The machine system manufacturer must test whether...

Page 16: ...ution as well as in the event of applications for industrial property rights The data specified within only serves to describe the product No statements concerning a certain condition or suitability for a certain application can be derived from our information The information given does not release the user from the obligation of own judgment and verification It must be remembered that our product...

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