Clevite MS-590A-10 High Performance Engine Crankshaft Main Bearing Set

The Clevite MS-590A-10 is a precision-engineered main bearing set designed for high-performance and racing applications. This bearing set utilizes Clevite's proven TriMetal bearing construction, featuring a hardened steel back, copper-lead intermediate layer, and a durable overlay for exceptional strength and wear resistance.

Key Features:

• TriMetal construction with hardened steel backing for maximum strength
• Optimized 180-degree upper shell grooving for ideal oil distribution
• High crush design ensures superior bearing retention
• Reduced overlay thickness prevents fatigue and "hen tracking"
• Engineered without flash plating for improved seating
• Enlarged chamfers provide greater crankshaft fillet clearance

Performance Advantages:

Clevite's extensive research has proven that a 180-degree groove in the upper main shell delivers optimal bearing performance. This design maintains the thickest possible oil film on the loaded lower bearing while ensuring adequate oil supply to connecting rod bearings. The ungrooved lower shell allows the crankshaft to develop a full hydrodynamic oil film, significantly improving load capacity and bearing life under high-stress conditions.

Application Notes:

This bearing set is ideal for performance engines operating at medium to high RPM ranges. The design balances oil flow to rod bearings while maximizing oil film thickness on loaded bearing surfaces. High crush construction ensures the bearings remain securely seated even under extreme operating conditions and thermal cycling.

Clevite engine bearings are trusted by professional engine builders and racers worldwide for their consistent quality, precise tolerances, and proven durability in the most demanding applications.