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Description
- Valid for: Hägglunds motors CA, CB
- Maximum flow 480 l/min
- Maximum pressure 350 bar
Features
- Compact and robust design
- Mounted directly on Hägglunds motors
- Counter balance function with low pilot pressure
- Pilot pressure independent of load pressure
Product description
General
The counter balance valve is designed for use with Hägglunds Compact motors CA and CB.
The valve can be mounted directly onto the motors. The valve provides a counter balance function on one or both motor lines depending on the configuration. Maximum operating pressure is 350 bar and maximum flow 480 l/min.
The valve is available in four main configurations
A. Counter balance function in P and C lines, with pilot pressure from opposite line or external Cx and Px
B. Counter balance function in P motor line, with pilot pressure from opposite line or external Cx
C. Counter balance function in P motor line, with pilot pressure from opposite line.
D. Counter balance function in C motor line, with pilot pressure from opposite line.
Function
The valve provides counter balance control of the associated motor. Various configurations are available with load control on the P line, C line or on both P and C lines. The load pressure generated in the motor line is held by a counter balance cartridge until the pilot pressure from either opposite motor line or an external pilot pressure (Cx) or (Px) reaches the set value. Then the counter balance cartridge opens and allows flow from the motor load line in the non load line. The counter balance cartridge starts to lift at a pilot pressure ratio of 4.5 to 1, thus load pressure versus pilot pressure. A check valve by-passes each counter balance cartridge to give free flow in the non load line.
 |  |
| Hydraulic diagram, configuration A | Hydraulic diagram, configuration B |
 |  |
| Hydraulic diagram, configuration C | Hydraulic diagram, configuration D |
Type code
ln order to identify Hägglunds equipment exactly, the following ordering code is used. These ordering codes should be stated in full in all correspondence e.g. when ordering spare parts.
| 01 | 02 | 03 | 04 | 05 | 06 |
| VCBC | A | 480 |
| 01 | Counter balance valve | VCBC |
| 02 | Version | A |
| Maximum flow | ||
| 03 | 480 l/min | 480 |
| Modification 1) | ||
| 04 | 00 | |
| Design | ||
| 05 | Standard | 00 |
| Special index 1) | 01 ... 99 | |
| Configurations | ||
| 06 | Counter balance function in P and C lines, with pilot pressure from opposite line or external Cx and Px | A |
| Counter balance function in P motor line, with pilot pressure from opposite line or external Cx | B | |
| Counter balance function in P motor line, with pilot pressure from opposite line | C | |
| Counter balance function in C motor line, with pilot pressure from opposite line | D | |
| 1) | To be filled in by Bosch Rexroth DC-IA/EHD |
Technical data
General data
| Mechanical specification | Maximum operating pressure | bar | 350 |
| Maximum Load Holding Pressure | bar | 350 | |
| Pressure Ratio | 4.5:1 | ||
| Maximum flow (see section "Pressure loss diagram") | l/min | 480 | |
| Hydraulic fluid (see data sheet RE 15414 Hydraulic fluid quick reference) | Fluid temperature range | °C | -25 … +70 |
| Viscosity range | mm²/s | 20 … 380 | |
| Recommended operating viscosity | mm²/s | 40 | |
| Weights | Counterbalance VCBCA 480 | kg | 20 |
| Surface treatment | Zinc plated and passivated (Cr3) | ||
Pressure loss diagram
Pressure loss P-Am, C-Cm over check valve, and without check valve.
Viscosity 40 mm2/s
| 1 | P-Am, C-Cm over check valve |
| 2 | P-Am, C-Cm without check valve |
Dimensions
VCBCA 480 configuration B
Dimensions in mm
Mounting
Installation
Fitting the VCBCA 480 valve on Hägglunds CA and CB
Refer also to the Installation and Maintenance Manual for actual motor.
 |
| Contamination of the system! Risk of damage components.
|
- Remove the protective cover from motor mounting surface
- Place the O-rings (included in delivery) in their proper position on the valve mounting surface. Use clean grease to keep O-rings fixed during assembly.
- Mount the valve against the motor with the ports in their correct position. Ensure that the Am or Cm port (depending of the valve configuration) on the valve is fitted to the high pressure port on the motor.
- For valve configuration B and C, Am has to be connected to the high pressure port on the motor.
- For configuration D, Cm has to be connected to the high pressure port.
- For configuration A, either Am or Cm has to be connected to high pressure port.
- Re-instate paint finish and protect exposed surfaces.
Hägglunds CA
| Position | Description |
| 1 | 8 pcs 1/2 UNC x 102 (included in delivery) |
| 2 | Valve VCBCA 480 |
| 3 | 2 pcs O-ring 37.69 x 3.53 NBR 90 (included in delivery) |
 |  |
| Example CA configuration C: High pressure in P valve / A2 motor (Hoisting), motor shaft rotating counter clockwise viewed from the motor shaft side. Lowering in C valve / C2 motor port | Example CA configuration C: High pressure in P valve /C1 motor (Hoisting), motor shaft rotating clockwise viewed from the motor shaft side. Lowering in C valve / A1 motor port |
| 1) | Hoisting |
Hägglunds CB
| Position | Description |
| 1 | 8 pcs 1/2 UNC x 102 (included in delivery) |
| 2 | Valve VCBCA 480 |
| 3 | 2 pcs O-ring 37.69 x 3.53 NBR 90 (included in delivery) |
 |  |
| Example CB configuration C: High pressure in P valve / A1 motor (Hoisting), motor shaft rotating counter clockwise viewed from the motor shaft side. Lowering in C valve / C1 motor port | Example CB configuration C: High pressure in P valve / C2 motor (Hoisting), motor shaft rotating clockwise viewed from the motor shaft side. Lowering in C valve / A2 motor port |
| 1) | Hoisting |
Installation drawing – VCBCA 480
Refer to dimensional drawing: 341 0070
Dimensions in mm
| Connection | Description | Connection |
| P, C | Main connection | SAE 1 1/4 1) |
| Am, Cm | ||
| Px, Cx | Remote Pilot Connection | G 1/4 |
| 1) | J815C, Code 62, 414 bar |
Information
Required and additional documents
| Title | Document no | Document type |
| Hydraulic fluid quick reference | RE 15414 | Data sheet |
| VCBCA 480 | 341 0070 1) | Dimension drawing |
| 1) | Documents only available at LHD extranet. Contact your Bosch Rexroth representative for information. |
Documents at Bosch Rexroth Media Directory
Safety Instructions
Warning signs
In this manual you will find the following signs which indicate a potential hazard, which can or will cause personal injury or substantial property damage. Depending on the probability if the hazard, and how serious the injury or property damage could be, there are three levels if classification.
| Warning sign (warning triangle) | Draws attention to the hazard |
| Signal word | Identifies the degree of hazard |
| Type of risk | Specifies the type or source of the hazard |
| Consequences | Describes the consequences of non-compliance |
| Precautions | Specifies how the hazard can be prevented |
The signal words have the following meaning:
| Warning sign, signal word | Meaning |
 | Indicates a dangerous situation which will cause death or severe personal injuries if not avoided. |
 | Indicates a dangerous situation which may cause death or severe personal injuries if not avoided. |
 | Indicates a dangerous situation which may cause minor or medium personal injuries if not avoided. |
 | Material damage: the product or its environment could be damaged. |
Ordering codes
Downloads
 | Hägglunds VCBCA 480 Data Sheet | RE15378 | 2015-12-31 | English | PDF | 766k Product Groups: Hägglunds VCBCA 480 Counter balance valve |
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