Clevite MS-590A Engine Crankshaft Main Bearing Set

The Clevite MS-590A is a high-performance engine crankshaft main bearing set engineered to deliver superior reliability and longevity in demanding applications. This precision-manufactured bearing set utilizes Clevite's proven TriMetal construction, featuring a steel back, copper-lead intermediate layer, and protective overlay for optimal load distribution and wear resistance.

Key Features:

• TriMetal bearing construction for enhanced strength and durability
• Optimized 180-degree upper shell grooving design for maximum oil film thickness
• High crush design ensures excellent retention and prevents bearing movement
• Reduced overlay thickness to prevent overlay fatigue and hen tracking
• Enlarged chamfers provide superior crankshaft fillet clearance
• Non-flash plated back for improved seating characteristics

Clevite main bearing sets are engineered based on extensive performance testing that demonstrates a 180-degree groove in the upper main shell provides the best overall bearing performance. This design maintains optimal oil film thickness in the loaded lower bearing while ensuring adequate oil supply to connecting rod bearings through the upper shell groove.

The MS-590A bearing set is designed for engines requiring reliable main bearing performance with proper oil distribution to rod bearings. The precision-ground bearing surfaces and controlled eccentricity ensure proper contact patterns covering approximately two-thirds to three-quarters of the bearing surface for optimal load distribution and heat dissipation.

Clevite bearings are the preferred choice of engine builders and professional racers worldwide, offering the perfect balance of conformability, embedability, and wear resistance for high-performance and racing applications.