Clevite MS-2218HX High Performance Engine Crankshaft Main Bearing Set

The Clevite MS-2218HX is a high-performance engine crankshaft main bearing set designed for competition engines and demanding racing applications. This H-Series bearing set features advanced engineering optimized for medium to high RPM operation, making it an ideal choice for NASCAR-style racing and other motorsports applications.

H-Series Performance Features:

• Medium level of eccentricity for optimal bearing contact patterns
• High crush design for maximum retention and stability
• Hardened steel back construction for added strength and fretting resistance
• Thin overlay to prevent overlay fatigue and hen tracking
• Enlarged chamfers for greater crankshaft fillet clearance
• No flash plating for improved seating characteristics
• Standard 180-degree upper half grooving for efficient oil distribution
• HX suffix indicates .001 inch extra clearance for standard size shafts

Advanced Bearing Design:

Clevite's H-Series bearings utilize proven TriMetal construction with carefully engineered oil grooving. The 180-degree groove in the upper main shell provides optimal oil flow to connecting rod bearings while maintaining maximum oil film thickness in the loaded lower bearing area. This design delivers superior bearing life and a greater safety margin compared to fully grooved designs.

Applications:

H-Series bearings are specifically designed for use with crankshafts featuring oversize fillets and engines operating in medium to high RPM ranges. These bearings deliver ideal contact patterns covering 2/3 to 3/4 of the bearing surface. The extra clearance HX designation makes this bearing set suitable for select fitting and applications requiring additional clearance tolerance.

Clevite H-Series bearings represent the recommended starting point for most high-performance engine builds where bearing selection is uncertain, offering an excellent balance of durability, oil flow, and load-carrying capacity for serious racing applications.