RE 15380, Version: 06.2024 Replaces: 12.2015
Bosch Rexroth AB
Freewheeling valve
Hägglunds VFWCB 600
FEATURES
• Compact and robust design
• Multifunctional
• Mounted directly on Hägglunds motors
• Detent function on pilot valve
• Possible for remote control
• ATEX version as option
VALID FOR:
• Hägglunds motors CA, Quantum, CBm
• Maximum ow 1000 l/min (264 gpm)
• Nominal 600 l/min (159 gpm)
• For closed and open loop hydraulic system
2 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
Contents
1 Preface ................................................................ 2
1.1 Safety messages ................................................... 2
2 Ordering code .....................................................3
3 Functional description ........................................4
4 Technical data ..................................................... 8
4.1 General data .......................................................... 8
4.2 Explosion environment ......................................... 9
5 Pressure loss diagram ......................................10
6 Dimensions / Interface ......................................11
7 Safety and installation instruction ....................14
7.1 Safety instructions .............................................. 14
7.2 Installation .......................................................... 15
7.3 Installation drawing ............................................ 17
7.4 Electrical installation ........................................... 19
8 Required and additional documents ..................20
WARNING
Load drop
Danger to life or risk of injury, damage to equipment!
▶ Valve version VFWCB 600 XXX7, spring return to
freewheel position, is not allowed to be used in
suspended load application
1 Preface
1.1 Safety messages
This documentation includes safety messages placed
before sequential operating procedures that may involve
the risk of personal or property damage. The described
precautionary measures must be observed.
Safety messages are structured as shown below:
SIGNAL WORD
Type and source of risk
Consequences if disregarded
▶ Precautionary measures
Warning sign: Draws attention to the risk
Signal word: Identifies the hazard level
Type and source of risk:
Identies the type and source
of the hazard
Consequences:
Describes what occurs when
the safety messages are not
complied with
Precautions:
Indicates how the hazard can
be avoided
The signal words have the following meaning:
Warning sign, signal word Meaning
DANGER
Indicates a hazardous situation
which, if not avoided, will result in
death or serious injury.
WARNING
Indicates a hazardous situation
which, if not avoided, could result
in death or serious injury.
CAUTION
Indicates a hazardous situation
which, if not avoided, could result
in minor or moderate injury.
NOTICE
Indicates potential property
damage: the product or the
environment may be damaged.
Freewheeling valve | Hägglunds VFWCB 600 3
RE 15380, 06.2024, Bosch Rexroth AB
2 Ordering code
In 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. Example: Valve VFWCB 600:
VFWC B 600 E 1 U 6 0 00 00
01 02 03 04 05 06 07 08 09 10
01 Free wheeling valve
VFWC
02 Version
B
03 Nominal ow (l/min)
600 600
04 Operation
Electrical operated E
Hydraulic operated H
Manual operated M
05 El data voltage
No 0
12 VDC (only standard design) 1
24 VDC 2
100 VAC (only standard design) 3
230 VAC (only standard design) 4
06 Pilot pressure suppl E M H
Internal pilot ● ● ●* U
External pilot ● ― ● Q
07 Main spool
Spring return to drive position 6
Spring return to freewheel position Note! See
warning page 2!
7
08 Explosive environment
Non explosive environment 0
Explosive environment
3)
1
09 Modication
Current modication 00
10 Design
Standard 00
Pilot valve with sea water protection (only 24 VDC) 01
Hydraulic operated pilot control valve. 03
Other special index 04-99
● Available ― Not available
* Only with design 03
4 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
3 Functional description
General
Hägglunds motors CA, Quantum and CBm can be operated
in free-wheeling mode by retracting the pistons and allo-
wing the cylinder block to freely rotate on its bearings.
The valve is designed for use with the motors and provides
free-wheeling of the motor by means of disconnecting the
motor from the main lines and connecting both motor
ports to T, which has to be drained to tank. The valve can
be mounted directly onto the motor and can be used in
both open and closed loop applications.
Maximum operating pressure is 350 bar (5076 psi) and
maximum flow 1000 l/min (264 gpm). Nominal flow is 600
l/min (156 gpm).
The valve is available in three main congurations:
1. VFWCB 600 E Free-wheeling valve electrically
operated
2. VFWCB 600 H Free-wheeling valve hydraulically
operated
3. VFWCB 600 M Free-wheeling valve manually operated
Various options are available referring to the order code.
Note!
Only one valve is to be used on the Hägglunds CBm.
For more than one valve, contact your Bosch Rexroth
representative!
Function
A system is required to ensure that the motor is in statio-
nary position before switching from free wheeling position
into drive position. Free-wheeling is achieved by maintain-
ing pressure into the motor case causing the piston to be
lift off the cam ring and pushed in to the cylinder block.
The rotating section of the motor comprising the cylinder
block, pistons and cam rollers can then rotate on the main
bearings without oil flow through the motor main ports.
This case pressure is generated by ensuring that there is a
flow through the motor case. The case pressure shall be
controlled with a pressure relief valve on the motor case
drain line, maintaining a pressure of 1,0 bar (14,5 psi) to
1.5 bar (22 psi), (one of the D ports). A typical response
for a Hägglunds CA210 motor with casing flow of 60 l/min
(16 gpm) would be 1 seconds to change into free-whee-
ling mode.
Before the motor is put into free-wheeling the pilot control
valve (3) is operated, which switches the main spool (1)
and connects the motor ports AM and Cm to T. T has to be
connected to tank.
The shuttle valve (2) allows pilot pressure to be selected
from the high pressure motor line.
Shifting from free-wheeling into operation during running
will not be allowed due to risk for motor damage. For this
reason the pilot control valve (3) has a detent function in
order to avoid unintentional shifting during operation if for
example there is a power failure to the solenoid.
When using the internal pilot valve it is important to
ensure that minimum pilot pressure is available, so that
drive or free-wheeling mode is fully engaged before driving
the motor. External pilot pressure via Px or Pa and Pb is
recommended for open loop system.
For additional information regarding free wheeling see
data sheet, section technical data, for respective motor.
NOTICE
Shifting from free wheeling position into drive position
during running of motor
Damage on piston parts and camring
▶ Shifting from free-wheeling position into drive position
must only be carried out when the motor is standing
still
Freewheeling valve | Hägglunds VFWCB 600 5
RE 15380, 06.2024, Bosch Rexroth AB
Fig. 1: Hydraulic Circuit for VFWCB 600 E 2 U 6. Electrically operated pilot control detented valve. Internal pilot valve supply.
Main spool spring return to drive position.
Fig. 2: Hydraulic Circuit VFWCB 600 E 2 U 7. Electrically operated pilot control detented valve. Internal pilot valve supply.
Main spool spring return to free-wheel position
DD00076119
DD00076274
6 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
Fig. 3: Hydraulic Circuit for VFWCB 600 M U 7. Manually operated pilot control detented valve. Internal pilot valve supply.
Main spool spring return to free-wheel position
Fig. 4: Hydraulic Circuit for VFWCB 600 H Q 6. Direct hydraulic control of main spool. Main spool spring return to drive position.
DD00076283
DD00076284
Freewheeling valve | Hägglunds VFWCB 600 7
RE 15380, 06.2024, Bosch Rexroth AB
Fig. 5: Hydraulic circuit for VFWCB 600 E 2 Q 6. Electrically operated pilot control detented valve. External pilot valve supply.
Main spool spring return to drive position
Fig. 6: Hydraulic circuit for VFWCB 600 H 0 U 7 0 0 03. Hydraulic operated pilot control valve. Internal pilot valve supply . Main spool
spring return to free-wheel position
DD00076285
DD00076289
8 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
4 Technical data
4.1 General data
Metric US
Mechanical specication
Maximum Operating Pressure 350 bar 5 076 psi
Pilot pressure
(to shift main spool)
7 min. to 350 max. bar 101 min. to 5076 max. psi
Drain pressure
(to retract piston assemblies)
(the motor case drain must go via a pressure relief valve to
tank)
1 to 1.5 bar 14,5 to 22 psi
Maximum Flow 1000 l/min 264 gpm
Nominal ow (see 5 Pressure loss diagram page 10) 600 l/min 159 gpm
Hydraulic Fluid (refer to Data sheet RE 15414 Hydraulic uid quick reference )
Maximum Fluid Temperature +70°C +158°F
Minimum Fluid Temperature -25°C -13°F
Maximum Viscosity Range 380 cSt 1760 SSU
Minimum Viscosity Range 20 cSt 98 SSU
Recommended Operating Viscosity 40 cSt 187 SSU
Pilot valve interface CETOP 03 CETOP 03
Weight
Free-wheeling valve typical VFWCB 600 40 kg 88 lb
Special index 01 - Pilot valve with sea water protection
Connectors EN 175301-803
Supply voltage 24 VDC
Solenoid power 30 W
Solenoid current 1.25 A
Solenoid protection class (EN 175301-803) IP65
Solenoid protection class IP65 (sea water protective)
Cable area min 1 mm²
Cable size Ø 10–14 mm
Connection pin 1
pin 2
24 VDC
0 VDC
Table 1: General data VFWCB 600
Freewheeling valve | Hägglunds VFWCB 600 9
RE 15380, 06.2024, Bosch Rexroth AB
4.2 Explosion environment
4.2.1 Hydraulic operated valve
Table 2: Explosion protection information hydraulic VFWCB 600
Area of application according to ATEX directive 2014/34/EU IM2, II2G, II2D, II3G, II3D
Protection of the valve by liquid immersion according to and
constructional safety according to
k (EN 13463-8)
c (EN 13463-5)
Maximum surface temperature + 100 ºC (+212 ºF)
Temperature class T4
Conforms to “Equipment and components intended for use in
potentially explosive atmospheres and in underground mines”
EN 1710
ATEX Classication of valve II 2 G D c k T4 / I M2 c k T4
Ambient temperature range -25…..+50 ºC (-13....+122 ºF)
4.2.2 Electrical operated valve
Table 3: Electrical operated / data
Voltage 24 VDC
Voltage tolerance ± 10%
Nominal power at ambient
temperature +20 ºC (68 ºF)
17 W
Maximum power with 1,1 x
nominal voltage and ambient
temperature +20 ºC (68 ºF)
20,6 W
Protection class IP66
Area of application according to
directive 2014/34/EU
II 2G
Type of protection valve C (EN 13463-5)
Maximum surface temperature 135 ºC (275 ºF)
Temperature class T4
Type of protection valve
solenoid according to EN
60079-7 / EN 60079-18
Ex eb mb IIC T4 Gb
Type examination certicate
solenoid
KEMA 02ATEX2240 X
IECEx Certicate of Conformity
solenoid
IECEx DEK 12.0068X
Ambient temperature range -20…+70 ºC (-4....158 ºF)
Table 4: Explosion protection information
10 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
5 Pressure loss diagram
Fig. 7: Pressure loss diagram - P to Am, Cm to C Viscosity 40 cSt/187 SSU.
Fig. 8: Pressure loss Diagram - Pressure drop Am, Cm to T for ow taking the motor from drive to free-wheel Viscosity 40 cSt/187 SSU
Q (gpm)
Dp (bar)
Dp (psi)
Dp Cm-C
Dp P-Am
Dp Tot
Am, Cm-T
Dp (psi)
Q (gpm)
DD00076290
DD00076292
Q (l/min)
Q (l/min)
Dp (bar)
Freewheeling valve | Hägglunds VFWCB 600 11
RE 15380, 06.2024, Bosch Rexroth AB
6 Dimensions / Interface
Fig. 9: Dimensions VFWCB 600 E
P X
T
P
C
36 [1.42]
87.3 [3.44]
186.3 [7.33]
124.8 [4.91]
56 [2.2]
136.2 [5.36]
231.7 [9.12]
269.7 [10.62]
299.7 [11.8]
56.7 [2.23]
203.5 [8.01]
186.3 [7.33]
87.3 [3.44]
118 [4.65]
195 [7.68]
110 [4.33]
90 [3.54]
WEIGHTINDIVID NO.
TYPE
bar
MAX PRESSURE
kg
Telefax +46 660-871 60
Telephon +46 660-871 00
SWEDEN
S-890 42 MELLANSEL
HÄGGLUNDS DRIVES AB
Fig. 10: Dimensions VFWCB 600 H, VFWCB 600 H ATEX
DD00076293
DD00076297
12 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
T
P X
SWEDEN
Telephone +46 660-870 00
S-890 42 Mellansel
+46 660-870 00
Telefax +46 660-871 60
http://www.hagglunds.com
B
A
B
A
87.3 [3.44]
186.3 [7.33]
110 [4.33]
87.3 [3.44]
186.3 [7.33]
36 [1.42]
118 [4.65]
195 [7.68]
55 [2.17]
254 [9.98]
449 [17.69]
90 [3.54]
56.7 [2.23]
136.2 [5.36]
269.7 [10.62]
231.7 [9.12]
WEIGHT
TYPE
INDIVID NO. MAX PRESSURE
kg bar
Fig. 11: Dimensions VFWCB 600 M
Fig. 12: Dimensions VFWCB 600 E ATEX
DD00076298
DD00076299
Freewheeling valve | Hägglunds VFWCB 600 13
RE 15380, 06.2024, Bosch Rexroth AB
Fig. 13: Dimensions VFWCB 600 E, special index 01
DD00076300
110 [4.33]
SA
SB
186.3 [7.33]
87.3 [3.44]
343.6 [13.52]
118 [4.65]
195 [7.68]
248 [9.76]
269.7 [10.62]
231.7 [9.12]
136.2 [5.36]
56.7 [2.23]
90 [3.54]
36 [1.42]
186.3 [7.33]
87.3 [3.44]
B B
INDIVID NO.
SWEDEN
TYPE
barkg
MAX PRESSURE
http://www.hagglunds.com
HÄGGLUNDS DRIVES AB
S-890 42 Mellansel
Telephone
Telefax
WEIGHT
+46 660-870 00
+46 660-871 60
VFWCB 600 H 0 U 6 0 03
350
40
HAGGLUNDS
DD00077308
Fig. 14: Dimensions VFWCB 600 H, special index 03
14 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
WARNING
Escaping oil mist!
Risk of explosion, re health hazard, environmental
pollution.
▶ Depressurize the system including valve and repair the
leak.
▶ Keep open ames an ignition sources from the
Hägglunds valve
Static discharge
Cleaning the valve with a dry rug may lead to explosions
through electrostatic dis-charge that may cause severe
injuries and even death
▶ Do not use a dry rug for cleaning
Lack of grounding
Risk of explosion that may cause severe injuries and even
death
▶ The valve must always be tted to the motor or
via adapter tted to the motor. The valve must be
electrically conductive and equipotential bonded with
the motor which must be grounded to the system.
▶ The valve are not allowed to be tted to any separate
bracket without grounding of the valve.
Painting
Risk of explosion that may cause severe injuries and even
death
▶ The valve must not be painted or otherwise coated
with non-conductive sub-stances!
▶ Any change at the surface protection will lead to loss
of explosion protection!
DANGER
Unsafe work on the valve
Danger to life or risk of injury, damage to equipment!
▶ Before carrying any work on the valve, rstly make
sure that a potentially explosive atmosphere cannot
occur during the period of the work
7 Safety and installation instruction
7.1 Safety instructions
7.1.1 General safety instructions
DANGER
Danger from excessively high pressure!
Danger to life or risk of injury, damage to equipment!
Using the valve above the permissible maximum pressure
can cause valve burst and hydraulic uid to escape under
high pressure.
▶ Use the valve within the permissible maximum
pressure
Pressurized valve
Danger to life risk of injuries when working on valve in
system not being depressurized
▶ Protect the system against being energized.
▶ Make sure that the system is depressurized.
▶ Do not disconnect any line connection, ports and
components when the system is pressurized
7.1.2 Safety instructions for ATEX environment
Freewheeling valve | Hägglunds VFWCB 600 15
RE 15380, 06.2024, Bosch Rexroth AB
7.2 Installation
7.2.1 Fitting the VFWCB 600 valve on Hägglunds CA
and Quantum
Refer also to the Installation and Maintenance Manual for
actual motor.
NOTICE
Contamination of the system!
Risk of damage components.
▶ Clean all mounting surfaces before assembly!.
• Remove the SAE flanges from motor mounting
surface and the plastic plugs from the valve moun-
ting 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
the correct position.
• Re-instate paint finish and protect exposed surfaces
Pos Description
1
6 pcs 1/2 UNC x 127 (5“) (included in delivery)
Tightening torque: 131 Nm (97 lbf·ft)
2 Valve VFWCB 600
3 2 pcs O-rings ø47,22 x 3,53 NBR 90 (included in delivery)
Fig. 15: Hägglunds CA
1
2
3
DD00076304
2
1
3
DD00076306
Fig. 16: Hägglunds Quantum
16 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
2
1
3
7.2.2 Fitting the valve on Hägglunds Quantum Power
and CBm
Refer also to the Installation and Maintenance Manual for
actual motor.
NOTICE
Contamination of the system!
Risk of damage components.
▶ Clean all mounting surfaces before assembly!.
• Remove the SAE flanges from motor mounting
surface and the plastic plugs from the adapter/valve
mounting surfaces.
• Place the O-rings (6) (included in delivery) in their
proper position on the adapter (4) mounting sur-
face.
• Use clean grease to keep O-rings fixed during
assembly.
• Mount the adapter (4) onto the motor with the
ports in their correct position.
• Place the O-rings (3) (included in delivery) in their
proper position on the valve (2) mounting surface.
• Use clean grease to keep O-rings fixed during
assembly.
• Mount the valve (2) against the adapter (4) with the
ports in their correct position.
• Re-instate paint finish and protect exposed surfaces.
4
5
6
DD00076307
Pos Description
1
6 pcs 1/2 UNC x 127 (5“) (included in delivery)
Tightening torque: 131 Nm (97 lbf·ft)
2 Valve VFWCB 600
3 2 pcs O-rings ø47,22 x 3,53 NBR 90 (included in delivery)
4
Adapter VA 1000 15 not included in delivery
(see Data sheet RE 15383 Hägglunds valve adapters)
5
8 pcs 3/4 UNC x 178 (7") (Included in VA 1000 15)
Tightening torque 568 Nm (419 lbf ft)
6 2 pcs O-ring 56,74x3,53 NBR 90 (Included in VA 1000 15)
Fig. 17: Hägglunds Quantum Power
Fig. 18: Hägglunds CBm
2
1
3
4
5
6
Note!
Mounting the valve on Hägglunds Quantum Power or
CBm, adapter R939011952, VA 1000 15 must be
ordered separately!
ILU00142
Freewheeling valve | Hägglunds VFWCB 600 17
RE 15380, 06.2024, Bosch Rexroth AB
Fig. 19: Installation drawing – VFWCB 600 E, VFWCB 600 E ATEX
7.3 Installation drawing
7.3.1 VFWCB 600 E
Refer to dimensional drawing: 078 3920
7.3.2 VFWCB 600 H
Refer to dimensional drawing: 078 3921
Fig. 20: Installation drawing – VFWCB 600 H, VFWCB 600 H ATEX
DD00076308
DD00076309
18 Hägglunds VFWCB 600 | Freewheeling valve
Bosch Rexroth AB, 06.2024, RE 15380
7.3.3 VFWCB 600 M
Refer to dimensional drawing: 078 3922
Fig. 21: Installation drawing – VFWCB 600 M
Connection Description Port Connection
P, C Main connection SAE 1 1/4 *
T Drain connection G 1
Px External pilot G 1/4
Pa, Pb External pilot G 1/4
* J518C, Code 62, 414 Bar (6000 psi)
DD00076310
Freewheeling valve | Hägglunds VFWCB 600 19
RE 15380, 06.2024, Bosch Rexroth AB
1
2
Fig. 22: Circuit diagram standard terminal box
7.4 Electrical installation
7.4.1 Electric circuit connection, standard.
Fig. 23: Electrical connection, ATEX terminal box
7.4.2 Electrical circuit connection, ATEX
Fig. 24: Circuit diagram ATEX terminal box
Position Function Connectable line cross-section
1
Operating voltage
connection
Single-wire 0.75 … 2.5 mm
2
Finely stranded 0.75 … 1.5 mm
2
2
Connection for
protective earthing
conductor
Single-wire max. 2.5 mm
2
Finely stranded max. 1.5 mm
2
3
Connection
for potential
equalization
conductor
Single-wire 4 … 6 mm
2
Finely stranded min. 4 mm
2
Table 5: Properties of the connection terminals and mounting
elements
Type approval II 2G Ex e IIC Gb
Threaded connection M20 x 1.5
Protection class according to EN
60529
IP66 (with correctly installed
electrical connection)
Line diameter 7 … 10.5 mm (0.28 ... 0.41 in)
Sealing Outer sheath sealing
Table 6: Cable gland
Line type
Non-armored cables and lines (outer sheath
sealing)
Temperature
range
–30 … > +110 °C ( -22...>+230 °F)
Table 7: Connection line
DD00082531
DD00082533
DD00082535
Hägglunds AB
SE-895 80 Mellansel
tel: +46 (0)660 870 00
www.hagglunds.com
© This document, as well as the data, specications and other information
set forth in it, are the exclusive property of Bosch Rexroth AB. It may not be
reproduced or given to third parties without its consent.
The data specied above only serve to describe the product. As our products
are constantly being further developed, 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 verication. It must be remembered that our
products are subject to a natural process of wear and aging.
Hägglunds is a brand of Rexroth, a leading global supplier
of drive and control technologies. Hägglunds solutions
enrich a comprehensive Rexroth portfolio.
Title Document no Document type
Hägglunds CA RE 15305-WA Installation & maintenance manual
Hägglunds Quantum RE 15428-A-WA Installation & maintenance manual
Hägglunds Quantum Power RE 15428-B-WA Installation & maintenance manual
Hägglunds CBm RE 15300-WA Installation & maintenance manual
Hägglunds CA RE 15305 Data sheet
Hägglunds Quantum RE 15428-A Data sheet
Hägglunds Quantum Power RE 15428-B Data sheet
Hägglunds CBm RE 15300 Data sheet
Hydraulic uid quick reference RE 15414 Data sheet
Hägglunds valve adapters RE 15383 Data sheet
Directional spool valves, direct operated,with solenoid actuation RE 23178-XE Data sheet
Freewheeling valve VFWCB 600 E 078 3920 Dimension drawing
Freewheeling valve VFWCB 600 H 078 3921 Dimension drawing
Freewheeling valve VFWCB 600 M 078 3922 Dimension drawing
Dimension drawings at Bosch Rexroth MyRexroth
8 Required and additional documents
