Question
Download Solution PDFWhich of the following couplings is better for transmitting high power at lower speed?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Couplings are used to connect two shafts for torque transmission in various applications.
Flange coupling
- Flange coupling is a driving coupling between rotating shafts that consists of flanges (or half couplings) one of which is fixed at the end of each shaft, the two flanges being bolted together with a ring of bolts and nuts to complete the drive.
- A flange coupling is a type of rigid coupling.
- It consists of two flanges - one keyed to the driving shaft and the other to the driven shaft.
- The two flanges are connected together by means of four or six bolts arranged on a circle concentric with the axes of the shafts.
- It is used for transmitting high power at a lower speed
- Power is transmitted from the driving shaft to the one flange through the key.
- It is then transmitted from that flange to the other side of the flange through bolts.
Sleeve or Muff coupling:
- It is also called the box coupling.
- It is made of a sleeve or hollow cylinder, which is fitted over the ends of input and output shafts by means of a sunk key.
- This coupling consists of a cast iron sleeve that is fitted over both shaft ends by means of keys. It is simple in design and manufacture and has a smooth exterior. But the disassembly is rather difficult.
- This coupling is used with small diameter shafts only.
Universal Coupling:
It allows positive transmission of power at larger angles than is permissible with a flexible coupling.
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