KINEMATIC PAIR- NATURE OF CONTACT

According to nature of contact kinematic pairs can be classified as:

* Higher Pair
* Lower Pair

HIGHER PAIR

When the pairs has point or line contact. Or the contact surface is dissimilar.

Example:

- Ball and roller bearings

- Cam and follower pair, etc...

 

LOWER PAIR

When the pairs has surface or area contact. Or the contact surface is similar.

Example:

- Nut turning on a screw

- Universal joint, etc...