## 20 March 2017

### Clamp coupling

What is clamp coupling?

• A device for uniting the ends of a shaft by means of conical binding-sleeves, which by longitudinal motion wedge themselves between the shaft ends and an outer cylinder, thus binding the whole together.
Clamp coupling is a coupling method that can be used when joining two piping units or hoses.

The clamp coupling is also called compression coupling or split muff coupling.

Clamp coupling is a rigid type of coupling. In this coupling, the sleeve is made of two halves, which are split along a plane passing through the axes of shafts. The two halves of the sleeve are clamped together by means of bolts and a small clearance is provided in the parting plane between two halves. Therefore, when the bolts are tightened, a force is exerted between the sleeve halves and the shaft.

Applications of clamp coupling :

The main application of clamp coupling is for line shaft in power transmission.

Clamp coupling is designed on the basis of standard proportions for sleeve halves and clamping bolts.

For sleeve halves :

D = 2.5 d
L = 3.5 d

Where,

D = Outer diameter of sleeve halves ( mm )
L = Length of sleeve ( mm )
d = Diameter of shaft ( mm )

For clamping bolts :

d1 = 0.2d + 10 mm
When d < 55 mm

and d1 = 0.15d + 10 mm
When d > 55 mm

Where,
d1 = Diameter of clamping bolt ( mm )