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Hydraulic equipment and systems
Centralized Lubrications
Electrohydraulic thrusters

Actuator 12T/120,000

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An actuator is a device whose main purpose is the realization of great force for braking most often for the purpose of anchoring of large cranes. The robust housing is located in the hydraulic power unit with gear pump. After starting the generator set includes a solenoid valve that is leaking oil into the front of the cylinder.  Pulling the piston rod it overcomes the spring brake mechanism and thereby release the brake on the rail, which allows the smooth movement of the crane. Power limit brake release is achieved by using the pressure limiting valve oil. It is recommended that the force brake release is about 15-20% higher than the force necessary to overcome the force of the springs. We have to take care that the pressure does not exceed the maximum permissible value, to avoid damage to the device. After exclusion of aggregates, springs return connecting rod in the forward position and thus the crane anchors and prevents its movement. Brakes are controlled by adjusting the damping check valve. For operation at low temperatures, below -15 ° C ,heater and thermostat are embedded in aggregate to heat the oil before it starts. At the request of the customer, we make the actuators with other dimensions and operating parameters.

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