Couplings And Clutches Flashcards
1
Q
Name three categories of mechanical clutches.
A
- Positive Contact
- Friction
- Over-running
2
Q
Name three types of Positive Contact Clutches.
A
- Square Jaw
- Spiral Jaw
- Multi-tooth
3
Q
What is a Postive Contact Clutch?
A
A clutch that cannot slip when engaged.
4
Q
What two disadvantages of Positive Contact Clutches?
A
- Engagement must be done at a very low speed.
- Engagement at any speed is accompanied by shock.
5
Q
Name 4 types of Fluid-couplings.
A
- Constant-fill Couplings
- Delayed-fill Couplings
- Variable-fill (scoop) Couplings
- Centrifugal Lockup Couplings
6
Q
What are three mechanisms which produce centrifugal force in clutches.
A
- Mechanical (clutch-style couplings)
- Hydraulic (fluid couplings)
- Dry Fluid Couplings
7
Q
What do Centrifugal Couplings allow clutches to do.
A
Soft start. Allow the prime mover to reach a set rotational speed before applying the load of the driven equipment.
