RE 18320-27/03.2016, Bosch Rexroth Oil Control S.p.A.
Technical data
Max. operating pressure 350 bar (5000 psi)
Max. flow 120 l/min (32 gpm)
Max. internal leakage
1)
15 drops/min.
Fluid temperature range -30 to 100 °C (-22 to 212 °F)
Installation torque 60 - 70 Nm (44 - 52 ft-lbs)
Weight 0.37 kg (0.82 lbs)
Cavity SUN T-22A
Lines bodies and standard
assemblies
Please refer to section “Hydraulic
integrated circuit” or consult factory
Seal kit
2)
Code: RG12U4020110100
material no: R930001204
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 (turn counterclockwise to increase setting
- turn clockwise to decrease setting), the direct-acting,
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 vented
to 4, allowing operation of all functions independent of
back-pressure at 2. Any back-pressure at 4 is additive to the
pressure setting in all functions.
Counterbalance, 4 port vented
poppet type external drain, counterclockwise adjustment
Sun cavity interchange, T-22A
RE 18320-27
Edition: 03.2016
Replaces: 01.2010VBSY-12U-RS 04.59.33 - X - 86 - Z
Characteristic curve
Flow Q
Pressure Δp