Steering control systems

DOC-series steering unit

Reactionless open center steering units. Equipped with two anti-cavitation, two anti-shock, safety, nonreturn valves in line P and a nonreturn valve in line P-T.

Maximum working volume, cm3/rev 50...1000
Safety valve set point pressure, MPа 8…17,5
Steering wheel control moment, Nm 2,5…3,5
Maximum drain pressure, MPа 2,5
DOC-series steering unit

Two-section DOC-series steering unit

Reactionless open center steering units. Equipped with two anti-cavitation, two anti-shock, and a nonreturn valve in line P and a nonreturn valve at the input of pressure line Р and a nonreturn valve in line Р-Т. Ensures emergency control of the machine in case of supply pump failure.

Working volume when the pump is in operation, cm3/rev 160…450
Emergency mode working volume (pump is inactive), cm3/rev 50…125
Safety valve set point pressure, MPа 8…17,5
Steering wheel control moment, Nm 2,5…4
Maximum drain pressure, MPа 2,5
Two-section DOC-series steering unit

DCN-series steering unit

Reactionless closed-centre steering unit. Equipped with a safety, two anti-cavitation, two anti-shock valves, a nonreturn valve at the input of pressure line Р, and a nonreturn valve in line Р-Т.

Maximum working volume, cm3/rev 50...800
Safety valve set point pressure, MPа 8…17,5
Steering wheel control moment, Nm 2,5…4
Maximum drain pressure, MPа 2,5
DCN-series steering unit

Two-section DLD-series steering unit

Reactionless closed-centre steering unit with a dynamic signal and a safety valve in line LS. Equipped with two anti-cavitation, two anti-shock valves, and in line P-T – with a nonreturn valve. Complete with a DKP type priority valve ensures the work of the steering system and the second user from one feeding pump, leaving priority of the steering system. Ensures manual control of heavy machinery when the feeding pump is inactive. Dynamic signal in line LS reduces response time of the steering system, which improves vehicle steerability.

Working volume when the pump is in operation, cm3/rev 160…450
Emergency mode working volume, cm3/rev 50…125
Safety valve set point pressure, MPа 8…17,5
Steering wheel control moment, Nm 2,5…3,5
Maximum drain pressure, MPа 2,5
Two-section DLD-series steering unit

DLS-series steering unit

Reactionless closed-centre steering unit with a static control signal in line LS. Equipped with two anti-cavitation, two anti-shock valves, and a nonreturn valve in line P-T. Complete with a SKP type priority valve ensures the operation of an additional user from one feeding pump, leaving priority of the steering system.

Maximum working volume, cm3/rev 50...1000
Anti-shock valve set point pressure, MPа 14…23,5
Steering wheel control moment, Nm 2,5…4
Maximum drain pressure, MPа 2,5
DLS-series steering unit

DLSX-series steering unit

Reactionless closed-centre steering unit with a static control signal in line LS, without valves. Designed for operation with OSQ type flow amplifier.

Working volume, cm3/rev 160…630
Steering wheel control moment, Nm 2,5…4
Maximum drain pressure, MPа 2,5
DLSX-series steering unit

DOPB-series steering unit

Reactionless open center steering unit with an additional EF output, without valves. Ensures the work of the steering system and the second user from one feeding pump, without a priority valve, leaving priority of the steering system. Upon request may be equipped with safety, anti-shock and anti-cavitation valves.

Working volume, cm3/rev 50...400
Safety valve set point pressure*, MPа 8…17,5
Steering wheel control moment, Nm 2,5…3,5
Maximum drain pressure, MPа 2,5

*when equipped with a safety valve

DOPB-series steering unit

DOR-series steering unit

Open center steering unit with reaction. Equipped with a nonreturn valve in line Р-Т.

Working volume, cm3/rev 50…800
Steering wheel control moment, Nm 2,5…4
Maximum drain pressure, MPа 2,5
DOR-series steering unit

DOW-series steering unit

Reactionless open center steering unit with a nonreturn valve in line Р-Т. Ensures the work of the steering system, including in a nonamplifying mode.

Maximum working volume, cm3/rev 50…1000
Steering wheel control moment, Nm 2,5…4

Maximum drain pressure, MPа

2,5
DOW-series steering unit

Gerotor hydraulic motor

Gerotor hydraulic motor

Nominal working volume, cm3  160
Nominal rotation speed, rpm 320
Nominal torque rating, Nm 300

SKP160 series priority valve

Priority valve with a static signal and an integrated control valve in LS line. Ensures the work of the steering system and the second user from one feeding pump, leaving priority of the steering system.

Maximum system pressure, MPа 25
Nominal volumetric supply of working liquid in the input, l/min 160
SKP160 series priority valve

Hydraulic single acting steering cylinder

Hydraulic single acting steering cylinder

Piston diameter (max), mm 50
Rod diameter (max), mm 25
Travel (max), mm 400
Pressure, MPа up to 20

Hydraulic steering cylinder with double rod output

Hydraulic steering cylinder with double rod output

Piston diameter, mm 57...68
Rod diameter, mm 32...45
Travel (max), mm 235
Nominal pressure, MPа 20
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