Hitachi loaders excavators hydraulic orbitrol steering unit Danfoss OSPL 150-8059

this type of orbitrol steering units has big displacement, high torque

it is special for heavey machines, big excavators, heavy loaders, backhol loaders

earthmovers....the similar quality as Danfoss/M+S/Eaton...

Part number	150-8059
Description	WHEEL LOADER PARTS
Category	STEERING UNITS
Sub-category	LOAD SENSING
Manufacturer	HANJIU
Weight	9.5kgs

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The type of steering unit of greatest interest to Off-Road Vehicles is the Open Center / Non Load Reaction
It is the simplest and most economical design, has all the features we typically need, and uses a fixed displacement pump.

Non-Load Reaction

A non-load reaction steering unit blocks the cylinder ports in neutral, holding the axle position whenever the operator releases the steering wheel.

Load Reaction

A load reaction steering unit couples the cylinder ports internally (in the neutral position) with the meter gear set. Axle forces are then allowed to return the steering wheel to its approximate original position. Comparable to automobile steering, gradually releasing the wheel mid turn will allow the steering wheel to spin back as the vehicle straightens. The cylinder system used with load reaction units must have equal oil volume displaced in both directions. The cylinders should be a parallel pair (as shown) or one double rod end unit. Do not use with a single unequal area cylinder system

Hanjiu supply all the function orbitrols, check me for details