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Oil surge tank with oil level control

Coaxial or angular gears have to be completely filled with oil when installed vertically.

During the filling process, an air bubble can form in the upper part on the level of the shaft seal, this air bubble has to be eliminated to prevent insufficient lubrication taking place. Since the oil volume increases as temperature increases, a surge tank with oil level control and ventilation filter has to be installed as a compensation measure. This prevents damaging excess pressure inside the gear.

 


Torque fittings

Slip-on gear mechanisms are attached to the drive shaft using shrink discs. They are not flanged on rigidly, rather supported "softly" with the aid of torque fittings. This means that no angular offset can occur, which leads to additional bending torque and an increased load on the gear mechanism. The attachment point of the torque support should be able to move freely in the longitudinal direction of the shaft. In the tangential direction, cushioning elements are provided to reduce the impact load.


Shrink discs

Shrink discs are removable shaft to collar connections. They are used with gear motors of the slip-on type. They are resistant to dirt, have no moving parts and are thus not subject to any wear. They offer the advantage of absolute freedom from play, particularly in the case of reversing operation.


Pressure protection with directly actuated pressure control valves

Two separately adjustable pressure control valves for both direction of rotations protect the drive from excess load. Two return valves 0.2 bar are used to feed the occurring leak back in again externally to prevent motor cavitation.


Pressure protection with directly actuated pressure control valves and valve connection

With this block design, directional control valves, proportional or servo valves with connection according to DIN24340 form A6 or A10 are screwed directly to the motor. Favourable control or regulating behaviour is achieved thanks to the small volume of oil enclosed. A connection plate with two different hole patterns makes it possible to attach valves for motor control or regulation and brake control. Two separately adjustable pressure control valves protect the drive from excess load.


Rotary encoders

Incremental rotary encoders, rotary pulse encoders or absolute rotary encoders are terms used to describe sensors used for recording changes in position, which can be both rotary angle and direction of rotation. Incremental rotary encoders have a material measure with a repeating, periodic count track. The measurement is based on determination of direction and a count.

The rotary encoders are usually attached to the measuring shaft side of the hydro motor using a mounting dome and an elastic coupling. There are rotary encoders in slip-on versions available for particularly tight spaces, with a kind of compact-design torque support.

 


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