COUPLINGS AND BACKSTOPS
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- COUPLINGS AND BACKSTOPS
What is couplings ?
A coupling is a mechanical element part that connects two shafts together to accurately transmit the power from the drive side to the driven side while absorbing the mounting error (misalignment), etc. of the two shafts.
The role of a coupling:
The role of a coupling is mainly as follows.
- Power is transmitted from the driving side (turning side) to the driven side
(turned side). - Absorbs mounting errors between the axes of the driving side (turning side)
and the driven side (turning side). - Absorbs vibration from the driving side (turning side) and protects
surrounding products. - Does not transfer heat from the motor on the drive side (turning side), etc.
to the driven side (turned side).
Applications of the couplings:
- Interfacing or connecting two independently made segments, e.g. generator or output motor shaft.
- Presenting additional adaptability while transmitting power if there is a limitation for space.
- Presenting security against over-burdens.
- Reduction of shock loads transmission starting with one shaft to the next by utilizing adaptable couplings.
What is backstops ?
Backstops can be provided to prevent reverse rotation when power is shut off on incline or vertical conveyors and similar drives. Gear units are supplied with backstops that use a hardened steel ratchet and spring loaded dogs, and others are equipped with sprag type backstops.
Applications of Backstops:
-Static back torque
-Maximum dynamic reverse torque due to the elasticity of the locked parts (e.g. belt conveyor pump station/drive
-Range of overrunning
-Number of load bearing within the lifetime
-Shaft diameter