Single gerotor steering unit – ST

Single gerotor steering valve for agriculture, material handling, construction equipment, gardening vehicles, sweepers, and autonomous vehicles.


The ST steering unit is the most versatile steering valve for several high performance vehicles and applications thanks to its wide range of specialized options and customizations available.
Due to its precise steering controllability, high performance and small size, it could be used in several applications for both road and off-road use, from low horse power machines up to construction equipment.


This steering unit features:

  • Compact design for easy integration
  • Low noise
  • Low torque
  • High performance and reliability
  • Wide range of applications


Open center Non-reaction (ON)

Open center Reaction (OR)

Load sensing Non-reaction (LS)

Load sensing reaction (LSR)

Power Beyond Non-reaction (PB)

Close center Non-reaction (CN)

Technical features

Displacement 50-400 cm³

(3,05-24,41 in³/rev)

Flow, recommended 5-50 l/min

(1,32-13,2 US Gal/min)

Maximum steering pressure 210bar 


Maximum back pressure  40bar 


Low steering torque From 0,8 to 3,0 Nm

(7,08 to 26,55 lbf·in)

Built-in valve functions Relief valve, shock valves, suction valves, check valve in P line and in LS line

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