Bosch Rexroth | SYDZ0001-1X250V045M
SYDZ0001-1X/250V045M
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The SYDZ0001-1X/250V045M belongs to the SYD Hydraulic Control Systems series manufactured by Bosch Rexroth and is intended to manage pressure in automated hydraulic loops. It is matched to the A10VSO pump family so tuning parameters align with that unit’s compensator, and it accepts pumps with nominal size 45 to supply the required displacement range. System capability extends to a maximum operating pressure of 350 bar, permitting use in high-pressure circuits, while a fixed pressure limitation of 250 bar protects downstream components. The preload stage limits control pressure to 20 bar during startup to prevent load shocks, and the valve shifts fully open at 30 bar to restore unrestricted flow. An integrated pressure relief valve is included and its setting is non-adjustable, eliminating field calibration steps.
High-pressure flow exits through pressure port Pp machined for an SAE 1 flange conforming to ISO 6162-1, which simplifies the attachment of standard hose fittings. Auxiliary monitoring port Mp1 uses a G1/4 thread for pressure gauges, the pilot port P is tapped G1/8 for small-bore tubing, the remote sensing port P1 carries a G3/4 thread for larger connectors, and the tank return port T is threaded G3/8 to accommodate drain lines. Four M10 × 120 mounting screws secure the housing to the pump, and each screw must be tightened to 50 Nm to maintain alignment under load. All dynamic seals are compatible with mineral oil fluids of the HL or HLP classes defined in DIN 51524, supporting common hydraulic oil selections.
Technical Specifications
Compatible Pump Nominal Size
45
Compatible Pump Type
A10VSO
Maximum Operating Pressure
350 bar
Mounting Screw Size
M10x120 (4x)
Mounting Screw Tightening Torque
50 Nm
Port Mp1 Thread
G1/4
Port P Thread
G1/8
Port P1 Thread
G3/4
Port T Thread
G3/8
Preload Control Limit
20 bar
Preload Fully Open Pressure
30 bar
Pressure Limitation Setting
250 bar
Pressure Port Pp Size
SAE 1 (ISO 6162-1)
Pressure Relief Adjustability
Non-Adjustable
Pressure Relief Valve
Integrated
Seal Compatibility
Mineral Oil (HL, HLP) DIN 51524
1620 Old Apex Road
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