Bosch Rexroth | ZDR10DB2-5X210YM
ZDR10DB2-5X/210YM
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The ZDR10DB2-5X/210YM valve belongs to the ZDR Pressure Reducing Valves series manufactured by Bosch Rexroth for hydraulic automation where a stable secondary pressure is required. With nominal size 10 (NG10), the unit fits manifolds following the ISO 4401-05-04-0-05 porting pattern. Pressure enters through port P and is reduced before reaching downstream actuators; the reduced side is limited to a maximum of 210 bar, while the inlet can be as high as 315 bar. Internal pilot supply draws control oil from channel B, and the pilot oil returns externally through port Y so that back pressure in the main tank line does not influence regulation. A sleeve with hexagon and protective cap provides the adjustment interface, enabling field technicians to fine-tune the set pressure without exposing internal parts.
For reliable circuit behavior the valve accepts flows up to 80 l/min and withstands counterpressure in port T up to 160 bar, preventing unwanted pressure rise when the return line is restricted. System cleanliness must meet ISO 4406 (c) 20/18/15 to avoid spool sticking, and seals made of NBR maintain leakage control with standard mineral oils. The permissible hydraulic fluid temperature spans from −30 °C to 80 °C, allowing operation in cold starts and warm service alike. A G1/4 connection accommodates a pressure gauge so technicians can verify settings during commissioning or maintenance. These features combine to provide repeatable pressure reduction across varied operating conditions within hydraulic machines.
Technical Specifications
Adjustment Type
Sleeve With Hexagon And Protective Cap
Cleanliness Class
ISO 4406 (c) 20/18/15
Hydraulic Fluid Temp (nbr) Max
80 C
Hydraulic Fluid Temp (nbr) Min
-30 C
Max Counterpressure (port T)
160 bar
Max Flow
80 l/min
Max Operating Pressure (inlet)
315 bar
Max Secondary Pressure
210 bar
Nominal Size
10 (NG10)
Pilot Oil Return
External (Y)
Pilot Oil Source
Channel B
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-05-04-0-05
Pressure Gauge Connection
G1/4
Pressure Reduction Port
P
Seals
NBR
1620 Old Apex Road
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