Free Spread ::

The free spread is the distance between the parting lines of the half bearings in free condition. Free spread diameter will be in excess of the diameter of the housing bore. While fitment, the half bearings have to be forced into the housing, which in turn helps to firmly hold the bearings while assembly.

Bearing Crush ::

Each half bearing is made slightly higher than exact half of the housing bore diameter. When these bearings are installed in a housing bore and the caps tightened, the parting faces mate with each other. The bearing crush creates a radial pressure and ensures proper seating of the bearing to the wall of the housing.

Oil Grooves ::

With a view to facilitate oil flow throughout the running surface, the con rod bearings and main bearings are provided with oil grooves.

Positioning Devices ::

To detect the location of the bearing in the housing bore at once and make installation easy, con rod & main bearings are provided with locating lugs and dowel pins which also locks bearing halves.