1W-1665: 29.72mm Width Main Bearing

A Main Bearing is a plain or journal bearing that supports the crankshaft in place and allows it to rotate under inertia forces generated by the parts of the shaft and oscillating forces transmitted by the connecting rod. The Main Bearing is mounted in a crankcase and consists of two parts: upper and lower. The upper part of a main bearing has an oil groove on the inner surface. Attributes: • Designed with a free spread for both top and bottom halves is 95.45mm • Provided with three oil holes of size 7.8mm in the upper half • Provided with Copper-Lead with overlay for conformability, embeddability, and anti-friction properties • Designed with 0.51mm Undersize and 0.25mm Oversize for better tolerances and clearance for enhanced performance Applications: A Main Bearing is used in internal combustion engines and other machinery that involves the reciprocating motion of a piston.