RE 18320-10/03.2016, Bosch Rexroth Oil Control S.p.A.
Technical data
Max. operating pressure 350 bar (5000 psi)
Max. flow 320 l/min (85 gpm)
Max. internal leakage
1)
15 drops/min.
Fluid temperature range -30 to 100 °C (-22 to 212 °F)
Installation torque 128 - 149 Nm (95 - 110 ft-lbs)
Weight 1.12 kg (2.5 lbs)
Cavity CA-20A-3C (see data sheet 18325-70)
Lines bodies and standard
assemblies
Please refer to section “Hydraulic
integrated circuit” or consult factory
Seal kit
2)
Code: RG20A9010530100
material no: R901111397
Fluids Mineral-based or synthetics with
lubricating properties
at viscosities of 10 to 500 mm
2
/s (cSt)
Recommended degree of
fluid contamination
Nominal value max. 10µm (NAS 8) /
ISO 4406 19/17/14
Installation position No restrictions
Other Technical Data See data sheet 18350-50
Pressure setting: at least 1.3 times the load induced pressure.
1) At 70% of pressure setting
2) Only external seals for 10 valves
Description
When pressure at 2 rises above the spring bias pressure,
the check seat is pushed away from the piston and flow is
allowed from 2 to 1. When load pressure at 1 rises above
the pressure setting, the direct-acting, differential area
relief function is activated and flow is relieved from 1 to 2.
With pilot pressure at 3, the pressure setting is reduced in
proportion to the stated ratio of the valve, until fully open
with free-flow from 1 to 2. The spring chamber is drained to
2. The valve applies a balanced piston design allowing relief
operation at the valve setting independent of back-pressure
at 2. However, the piloted opening of the valve remains
subject to additive pressure at port 2.
Counterbalance, relief compensated
poppet type differential area
Common cavity, Size 20
RE 18320-10
Edition: 03.2016
Replaces: 01.2010VBSP-20A 04.54.13 - X - 58 - Z
Characteristic curve
Flow Q
Pressure Δp
2
Bosch Rexroth Oil Control S.p.A., RE 18320-10/03.2016
Bosch Rexroth Oil Control S.p.A.
Via Leonardo da Vinci 5
P.O. Box no. 5
41015 Nonantola – Modena, Italy
Tel. +39 059 887 611
Fax +39 059 547 848
compact-hydraulics-cv@boschrexroth.com
www.boschrexroth.com/compacthydraulics
© This document, as well as the data, specifications and other information set
forth in it, are the exclusive property of Bosch Rexroth Oil Control S.p.a.. It
may not be reproduced or given to third parties without its consent. The data
specified above only serve 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
products are subject to a natural process of wear and aging. Subject to change.
VBSP-20A | Counterbalance, relief compensated
Dimensions [mm (inches)]
Ordering code
Type Material number
045413035820000 R901099735
045413035835000 R901099795
Type Material number
Dimensions
OPTION
Tamper resistant cap
ordering code: 11.04.23.004
Mat. no. R930001411
Series 0/A to L
unchanged performances and dimensions
Counterbalance, relief compensated,
poppet type differential area
Version and options standard
SPRINGS
Pilot ratio
Adj. press. range
bar (psi)
Pressure increase
bar/turn (psi/turn)
Std. setting
bar (psi)
Q=5 l/min
03 4:1
20 70-210 (1000-3000) 70 (1015) 200 (2900)
35
140-350 (2000-5000) 108 (1566) 350 (5000)
58 Common cavity, Size 20
Preferred types
04.54.13 X 58 Z 00 *
Note: Special settings available. Contact factory authorized
representative for ordering code.
