Jul 122015

Sleeve and Cotter Joint Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods. It contains a sleeve and two wedge shaped tapered cotters. Appropriate slots are cut in the sleeve and in the cylindrical rods. The cotters are assembled into these slots.

The following sections explain the sleeve and cotter joint in detail:

  1. Parts
    1. Exploded View
    2. Assembled View
  2. Advantages
  3. Disadvantages

Parts of a Sleeve and Cotter Joint:

As stated in the introduction above, a typical sleeve and cotter joint contains the following parts:

  1. A Sleeve
  2. Two wedge shaped tapered cotters

The exploded view shown below will help you to visualize the parts of a sleeve and cotter joint:

Exploded View of a Sleeve and Cotter Joint

Exploded View of a Sleeve and Cotter Joint

In the above exploded view you can find the cut slots (sockets) in the sleeve and in the cylindrical rods.

Two cylindrical rods, which are to be joined, are aligned coaxially. Their similar ends are made to touch each other and their slots are made symmetrical with respect to each other (preferably pointing upwards). Sleeve is then placed over them. Its slots are aligned with the slots of the cylindrical rods. Two cotters are inserted into the aligned slots. An assembled view found below will help you understand this assembly process.

Assembled View of a Sleeve and Cotter Joint

Assembled View of a Sleeve and Cotter Joint

In a sleeve and cotter joint, the cut slots are always made a little bit wider than the width of the cotters in order to promote wedging action of the cotters over the slots. This clearance is called cotter clearance.

Advantages of Sleeve and Cotter Joint:

  1. This joint is the simplest cotter joint in existence.
  2. It is quite rigid and can take both tensile and compressive loads.
  3. It can be easily assembled and dismantled.
  4. The joint can also be used to connect similar pipes, tubes

Disadvantages of Sleeve and Cotter Joint:

  1. Rectangular rods and dissimilar cylindrical rods cannot be connected using this joint.
  2. Unlike the universal joint, a sleeve and cotter joint does not allow angular misalignment between its cylindrical members.
  3. It cannot connect cylindrical members which undergo rotation.

Bookmark, Email or Share this Page

Get Fresh Content from Mechteacher.com!

Written by

I am a mechanical engineer with a passion for technical stuff. I am the founder and former editor-in-chief of Mechteacher.com.

  • Pratik Hingankar

    what are application of cotter joint

  • Vishal Sawale

    can u provide real life applications of cotter joint with its force analysis….plzz