SPLIT-MUFF OR CLAMP OR COMPRESSION COUPLING

 WHAT IS SPLIT- MUFF?

• A split muff or clamp or compression is a rigid type coupling and is a modification of muff or sleeve coupling.
• Split muff coupling, consists of a muff or sleeve split into two halves along a plane passing through the axes of the shafts. The two halves of the muff are tightly clamped against the surface of the shaft ends by means of bolts. The number of bolts used is in multiple of 4. 
• A small clearance is provided between the two halves of the muff to create a frictional force between the surface of the shaft and muff, on clamping.
• In small and medium-size couplings, a key is also fitted between the shaft and muff.
• The advantage of split muff coupling is, due to split muff, the coupling can be easily assembled or disassembled without shifting the shaft axially.