Steering units
Steering units HKU/3,4 without feedback
M+S Hydraulic
Product code: 1031
maximum displacement: 990 cm3/rev
Steering units HKUS/3, 4, 8 without feedback
M+S Hydraulic
Product code: 1035
maximum displacement: 500 cm3/rev
Steering units XY without feedback
M+S Hydraulic
Product code: 1037
maximum displacement: 145 cm3/rev
Steering units HKUQ without feedback
M+S Hydraulic
Product code: 1034
maximum displacement: 200 cm3/rev
Steering units HKUM/4 without feedback
M+S Hydraulic
Product code: 1033
maximum displacement: 100 cm3/rev
Steering units BQAS and BPBS without feedback
Oleodinamica Mozioni
Product code: 6549
maximum displacement: 400 cm3/rev
Steering units HKUSD/7 without feedback
M+S Hydraulic
Product code: 1032
maximum displacement: 793 cm3/rev
Steering units HKUSD/4 without feedback
M+S Hydraulic
Product code: 1036
maximum displacement: 125 cm3/rev
Steering units SUB 200-500 without feedback
Lifam
Product code: 6724
maximum displacement: 200 (500) cm3/rev
Steering units with valves SUB 200-500 without feedback
Lifam
Product code: 6726
maximum displacement: 500 cm3/rev
Hydrostatic Steering Flow Amplifiers type HSFA
M+S Hydraulic
Product code: 1977
maximum displacement: 250 cm3/rev
eightfold boost of torque
Steering units HKU/4PB with feedback
M+S Hydraulic
Product code: 1041
maximum displacement: 125 cm3/rev
Steering units HKU(S)/5 with feedback
M+S Hydraulic
Product code: 1040
maximum displacement: 625 cm3/rev
Steering units HKUL/5DT with feedback
M+S Hydraulic
Product code: 1042
maximum displacement: 990 cm3/rev
Steering units HKUM/4 (PB) with feedback
M+S Hydraulic
Product code: 1043
maximum displacement: 100 cm3/rev
Steering units HKUM/5DT with feedback
M+S Hydraulic
Product code: 1044
maximum displacement: 100 cm3/rev
Steering units HKUS/5RDT with feedback
M+S Hydraulic
Product code: 1045
maximum displacement: 200 cm3/rev
Steering unit
Pump with dispenser – this is a hydraulic unit that works together with a gear pump and a hydraulic cylinder. The direct purpose of the metering pump is to proportionally apply pressure to one cavity of the cylinder or to another, depending on the rotation of the wheels.
Metering pump device
The design of the hydraulic dispenser includes:
- Gerotor-type pumping unit, consisting of two gears.
- The distributor, which includes the spool, drive shaft and sleeve. It directs the fluid supply to the cylinder.
- Two anti-shock valves to prevent water hammer in the cylinders.
- Relief valve – it regulates a constant pressure in the metering pump and prevents overpressure in the supply. It can be built into the pump and screwed to it in the form of a valve block or taken out separately, being in the hydraulic system (such a valve is called a "portioner").
- Two vacuum valves, which are needed to regulate the pressure in both cavities of the cylinder in the event of an anti-shock valve.
The principle of the steering unit
When the steering column and spool are in neutral, pressure flows from the supply to the drain. The rotation of the steering wheel causes the spool to turn and open the grooves in the metering pump housing itself. They block the drain and supply liquid directly to the pumping unit, which drives the internal gear.
In turn, she turns the sleeve, thereby opening the grooves to the entrance to the cylinder itself. Under pressure, the grooves supply liquid in portions to the cylinder cavity, after which the rod exits and the wheels turn. When the steering wheel returns to the neutral position again, the grooves are blocked by the spool and the fluid flows back to the drain.
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