Bosch Rexroth | ZSF100F1-1-1XM12
ZSF100F1-1-1X/M/12
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The ZSF100F1-1-1X/M/12 valve belongs to Bosch Rexroth's ZSF Prefill Valves series and supports rapid filling and emptying of hydraulic cylinders in automation circuits. It has a nominal size of NG100, giving suitable flow capacity for large-bore actuators. The valve connects through a flange interface, allowing direct mounting to cylinder or tank manifolds, and can be installed in any position to simplify layout. Eight M27 × 180 mounting screws secure the body, and each screw requires 1150 Nm of tightening torque to achieve the proper clamping load. Port P uses a 15/16-12 UN thread while port X is machined to 7/8-14 UNF for pilot lines. The assembly weighs 15 kg, which permits manual handling during maintenance without lifting equipment.
For system performance, the valve withstands a maximum operating pressure of 350 bar on the main flow path, while pilot port X is limited to 150 bar and port A to 16 bar, protecting the seat components from overload. Reliable operation is maintained with hydraulic fluids having viscosities between 10 and 800 mm²/s, giving flexibility in oil selection. Fluid cleanliness must meet ISO 4406 code 20/18/15 to prevent seat wear and leakage. The valve functions across ambient temperatures from −30 °C to +80 °C, so outdoor or press-shop installations are possible without heaters or coolers. These limits support heavy-duty machines that rely on rapid cylinder prefill during low-pressure strokes and positive shut-off once high pressure is applied.
Technical Specifications
Ambient Temp Max
+80 °C
Ambient Temp Min
-30 °C
Cleanliness Class
ISO 4406 20/18/15
Connection Type
Flange
Installation Position
Any
Max Operating Pressure (b, P)
350 bar
Max Pressure Port A
16 bar
Max Pressure Port X
150 bar
Mounting Screws
8 x M27 x 180
Nominal Size
NG100
Port Thread P
15/16 - 12 UN
Port Thread X
7/8 - 14 UNF
Screw Tightening Torque
1150 Nm
Viscosity Max
800 mm²/s
Viscosity Min
10 mm²/s
Weight
15 kg
1620 Old Apex Road
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