Steering

Many off-highway vehicles are required to incorporate supplementary steering and braking in in case an engine failure should deactivate the primary steering system. Traditional methods incorporate a bi-directional pump driven off the transmission, which continues to provide flow as long as the vehicle is moving. This is an expensive solution since it requires an extra mounting pad on the transmission or a mechanical linkage from the transmission to the pump. Some systems require a clutch which adds further complexity. In addition the pump has to be large enough to provide the required flow at low speeds.

We were the first to introduce electro-hydraulic systems for the steering function and have now developed products that combine both supplementary steering and braking. The electro-hydraulic solution replaces expensive mounting pads and mechanical interfaces via wires. It also allows the use of a smaller uni-directional pump. Concentric excels in the specialist technology of integrating DC motors, hydraulic pumps and valves. The electro-hydraulic unit is required to operate in a very harsh environment for which Concentric's robust DC motor/pump units, such as the IP 67 sealed motor, heavy-duty start switches and insulated wiring boots are all ideally suited.

W300

Displacement: 0.8 - 5.7cc
Max. Pressure: 230 bar (3,335 psi)
Max. Speed: up to 6000 rpm

GC

Displacement: 1.0 - 11.6cc
Max. Pressure: 275 Bar (4,000 psi)
Max. Speed: 4,000 rpm

High/Low

Displacement: 1.0 - 22.8cc
Max. Pressure: 207 Bar (3,000 psi)
Max. Speed: 4,000 rpm

Multiples

Displacement: 1 - 161cc
Max. Pressure: 275 Bar (4,000 psi)
Max. Speed: 4,000 rpm

W600

Displacement: 3 - 12cc
Max. Pressure: 276 bar (4,000 psi)
Max. Speed: 700 to 4,000 rpm

D

Displacement: 3.8 - 22.9cc
Max. Pressure: 207 bar (3,000 psi)
Max. Speed: 600 to 3,600 rpm

WQ900

Displacement: 6 - 23 cc
Max. Pressure: 230 bar (3,400 psi)
Max. Speed: 500 to 4,000 rpm

W900

Displacement: 6 - 28 cc
Max. Pressure: 276 bar (4,000 psi)
Max. Speed: 500 to 4,000 rpm

Calma Series

Displacement: 6.2 - 23.7cc
Max. Pressure: 250 Bar (3,625 psi)
Max. Speed: 4,000 rpm

F12 Ferra

Displacement: 16 - 41cc
Max. Pressure: 276 bar (4,000 psi)
Max. Speed: 3,000 rpm

F15 Ferra

Displacement: 19 - 50cc
Max. Pressure: 276 bar (4,000 psi)
Max. Speed: 3,600 rpm

W1500

Displacement: 19 - 50cc
Max. Pressure: 276 bar (4,000 psi)
Max. Speed: 500 to 3,300 rpm

F20 & F30 Ferra

Displacement: 23 - 161cc
Max. Pressure: 276 bar (4,000 psi)
Max. Speed: 3,600 rpm

F20LS/F30LS

Displacement: 23 - 161cc
Max. Pressure: 276 bar (4,000 psi)
Max. Speed: 3,600 rpm

W1200

Displacement: 25 - 33cc
Max. Pressure: 214 Bar (3,100 psi)
Max. Speed: 700 to 3,000 rpm

EHS

Displacement: 5.5 - 31cc
Max. Pressure: 5Kw
Max. Speed: 500 to 2,500 rpm