RE 18308-56/03.2016, Bosch Rexroth Oil Control S.p.A.
Description
It provides static and dynamic motion control by regulating
the flow IN and OUT of the hydraulic motor, through ports
C1 and C2. It includes 2 sections, each one composed by a
check and a relief valve pilot assisted by pressure in the
opposite line: the check allows free flow into the motor,
then locks and prevents reverse movement. With pilot
pressure applied at the line across, the pressure setting of
the relief is reduced in proportion to the stated ratio until
opening and allowing controlled reverse motion. With
motor turning and without pilot pressure, the relief function
builds up back-pressure at the motor port in order to stop
the motion. Back-pressure at V1 or V2 is additive to the
pressure setting in all functions. Through port C3, a shuttle
valve directs either V1 or V2 line pressure to the spring
actuated brake for brake releasing.
Dual counterbalance
with brake release port
RE 18308-56
Edition: 03.2016
Replaces: 04.2010VBSO-DE-VF-30-FM 06.03.01 - X
Characteristic curve
Flow Q
Pressure Δp
Technical data
Operating pressure up to 210 bar (3000 psi)
Max. flow 60 l/min. (16 gpm)
Flangeable on SAUER-DANFOSS orbital motors OMS series.
Relief setting: at least 1.3 times the highest expected load. In addition,
both the relief setting and the pilot ratio must be determined in order
to achieve building-up of pilot pressure in V1 or V2 high enough to
release the brake prior to any valve opening.
Weight 1.6 kg (3.5 lbs)
Manifold material Aluminium
Note: aluminium bodies are often strong enough for operating
pressures exceeding 210 bar (3000 psi), depending from the
fatigue life expected in the specific application. If in doubt, consult
our Service Network.
Fluid Mineral oil (HL, HLP) according
DIN 51524
Fluid temperature range -30 °C to 100 (-22 to 212 °F)
Viscosity range 10 to 500 mm
2
/s (cSt)
Recommended degree of fluid
contamination
Class 19/17/14 according to
ISO 4406
Other technical data see data sheet 18350-50
Note: for applications outside these parameters, please consult us.
2
Bosch Rexroth Oil Control S.p.A., RE 18308-56/03.2016
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-pib@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.
VBSO-DE-VF-30-FM | Dual counterbalance
Dimensions [mm (inches)]
Dimensions
Type Material number
06030101300000C R930002738
06030102300000D R930002751
Type Material number
Ordering code
Dual counterbalance
with brake release port
SPRINGS
Adj. pressure
range
bar (psi)
Pres. increase
bar/turn
(psi/turn)
Std. setting
Q=5 (l/min.)
bar (psi)
Pilot ratio
013 4.2:1
for
X=013
60-210
(900-3000)
56
(812)
200
(2900)
023 11:1
for
X=023
60-250
(900-3600)
70
(1015)
250
(3600)
Port sizes V1 - V2 C1 - C2 C3
G 1/2 G 1/2 G 1/4
06.03.01 X
Tamper resistant cap
ordering code 11.04.23.002
Mat. no. R930000752
