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Description
- Valid for: Hägglunds motor CA, CB, CBM
- Maximum flow 1000 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, CB and CBM. The valve is normally mounted on an adapter which is included with the valve. The valve provides a counter balance function on the motor high pressure line. On low pressure line, there is a straight through connection. Maximum operating pressure is 350 bar and maximum flow 1000 l/min.
The valve is available in two main configurations:
- VCBCA 1000 Counter balance valve with adapter.
- VCBCA 1000 Counter balance valve with adapter and with option for external opening of counter balance spool.
Notice!
Only one valve is to be used on the Hägglunds CBM.
For more than one valve, contact Bosch Rexroth DC-IA/EHD.
Notice!
If the counter balance spool is opened externally for emergency lowering of a load, the current used motor must be inspected.
Function
The cartridge within the valve for counter balance is mounted in bores in a manifold block and retained by screws on covers with all connections to create the valve function within the block.
The valve provides counter balance control of the associated motor on the valve high pressure line only. When lowering the load pressure generated in the motor high pressure line is held by the pressure cartridges (910) and (920) until the pilot pressure from opposite motor C line reaches the set value. Then the counter balance cartridge opens and allows flow from the motor to Am port on valve to exit into the valve P line. When hoisting a check valve (910) by-passes the counter balance spool to give free flow from valve P port to the Am port.
The counter balance cartridge starts to lift at a pilot pressure of 20 bar and is fully open at 28 bar, regardless of load pressure. In an emergency situation, the cartridge (920) can be opened using an external pilot connection to port EML. This version of the valve has index number 01.
 |
| Counter balance spool is opened externally for emergency lowering of a load (config. 2, special index 01) Risk of damaged motor due to over speed.
|
Hydraulic circuit VCBCA 1000 00 00
Hydraulic Circuit VCBCA 1000 00 01
Dimensions in mm
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 | 1000 |
| 01 | Counter balance valve | VCBC |
| 02 | Version | A |
| Maximum flow | ||
| 03 | 1000 l/min | 1000 |
| Modification 1) | ||
| 04 | 00 | |
| Design | ||
| 05 | Standard | 00 |
| Option for external opening of counter balance spool | 01 | |
| Special index 1) | 02 ... 99 | |
| Valve adapter | ||
| 06 | None | XX |
| VA 1000 10 | VA | |
| 1) | To be filled in by Bosch Rexroth DC-IA/EHD |
Technical data
General data
| Mechanical specification | Maximum operating pressure | bar | 350 |
| Maximum flow | l/min | 1000 | |
| C/Cm line Pressure range to open Counter Balance Valve (see section "Pressure loss diagram") | bar | 20 ... 28 | |
| 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 1000 | kg | 40 |
| Adapter VA 1000 10 | kg | 24 |
Pressure loss diagram
Pressure loss diagram P-Am over Check Valve, Viscosity 40 mm2/s
Pressure loss diagram Am–P through Counter Balance Valve, Viscosity 40 mm2/s
Dimensions
VCBCA 1000 00 00 VA
Dimensions in mm
VCBCA 1000 00 01 VA
Dimensions in mm
Mounting
Installation
Fitting the VCBCA 1000 valve on Hägglunds CA, 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 adapter mounting surface.
- Use clean grease to keep O-rings fixed during assembly.
- Mount the adapter onto the motor with the ports in their correct position.
- Remove the protective cover from the adapter 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 adapter with the ports in their correct position. Ensure that the Am port on the valve is fitted to the high pressure port on the motor.
- Re-instate paint finish and protect exposed surfaces.
Hägglunds CA
| Position | Description |
| 1 | 4 pcs M16 x 130 (included in delivery) |
| 2 | Valve VCBCA 1000 |
| 3 | 8 pcs 1/2 UNC x 102 (included in delivery) |
| 4 | Adapter VA 1000 10 (included in delivery) |
| 5 | 4 pcs O-ring 40.87 x 3.53 NBR90 (included in delivery) |
 |  |
| 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 | 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 | 4 pcs M16 x 130 (included in delivery) |
| 2 | Valve VCBCA 1000 |
| 3 | 8 pcs 1/2 UNC x 102 (included in delivery) |
| 4 | Adapter VA 1000 10 (included in delivery) |
| 5 | 4 pcs O-ring 40.87 x 3.53 NBR90 (included in delivery) |
 |  |
| 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 | 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 |
Fitting the VCBCA 1000 valve on Hägglunds CBM
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 adapter mounting surface.
- Use clean grease to keep O-rings fixed during assembly.
- Mount the adapter onto the motor with the ports in their correct position.
- Remove the protective cover from the adapter VA 1000 10, mounting surface.
- Place the O-rings (included in delivery) in their proper position on the adapter mounting surface.
- Use clean grease to keep O-rings fixed during assembly.
- Mount the adapter VA 1000 10 onto the adapter VA 1000 15 with the ports in their correct position.
- Remove the protective cover from the adapter 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 adapter with the ports in their correct position. Ensure that the Am port on the valve is fitted to the high pressure port on the motor.
- Re-instate paint finish and protect exposed surfaces.
Notice!
Adapter R939011952, VA 1000 15 must be ordered separately!
Hägglunds CBM
| Position | Description |
| 1 | 4 pcs M16 x 130 (included in delivery) |
| 2 | Valve VCBCA 1000 |
| 3 | 8 pcs 1/2 UNC x 102 (included in delivery) |
| 4 | Adapter VA 1000 10 (included in delivery) |
| 5 | 4 pcs O-ring 40.87 x 3.53 NBR90 (included in delivery) |
| 6 | Adapter VA 1000 15 not included in delivery |
| 7 | 8 pcs 3/4-UNC x 178 (included in VA 1000 15) |
| 8 | 2 pcs O-ring 56.74 x 3.53 NBR 90 (included in VA 1000 15) |
 |  |
| 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 | 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 |
Installation drawing VCBCA 1000
Refer to dimensional drawing: 141 0406 / 041 0483
Installation drawing VCBCA 1000 00 01
Dimensions in mm
| Connection | Description | Connection |
| P, A, C | Main connection | SAE 1 1/4" 1) |
| Am, Cm | ||
| EML | External opening | 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 |
| Valve | 141 0406 1) | Dimension drawing |
| Valve | 041 0483 1) | |
| Hägglunds valve adapters | RE 15383 | Data sheet |
| 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
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