Clevite MS-1946A Engine Crankshaft Main Bearing Set

The Clevite MS-1946A is a high-performance engine crankshaft main bearing set engineered to provide optimal lubrication and durability in demanding applications. This bearing set features advanced tri-metal construction that combines strength, conformability, and wear resistance for extended service life.

Key Features:

• Tri-metal bearing construction for superior strength and durability
• Optimized 180-degree upper shell grooving for efficient oil delivery to connecting rods
• Ungrooved lower shells maintain maximum oil film thickness for improved load capacity
• High crush design ensures secure retention in the bearing bore
• Reduced overlay thickness prevents overlay fatigue under high-stress conditions
• Enlarged chamfers provide clearance for oversized crankshaft fillets
• Non-flash plated back for improved seating characteristics

Bearing Design Technology:

This main bearing set utilizes an advanced groove configuration that maximizes bearing performance. The 180-degree groove in the upper shell efficiently supplies oil to the connecting rod bearings while maintaining optimal film thickness. The ungrooved lower shells, which experience higher loads, develop a thicker oil film that provides greater load capacity and improved bearing life compared to fully-grooved designs.

Applications:

Ideal for high-performance street engines, racing applications, and rebuilt engines requiring reliable main bearing protection. The bearing set's design accommodates crankshafts with oversized fillets and delivers consistent performance across medium to high RPM ranges. Suitable for engines experiencing significant loads and requiring maximum oil flow to rod bearings.

Performance Series Options:

Clevite offers multiple bearing series to match specific engine requirements. P-Series bearings feature maximum eccentricity and full grooving for extreme RPM applications. H-Series bearings provide medium eccentricity with standard or full grooving options. K-Series bearings incorporate a proprietary moly/graphite TriArmor coating for enhanced wear protection. V-Series bearings utilize lead-indium overlay for superior conformability. M-Series micro bearings feature thick babbitt lining for engines with severe crankshaft deflection.

Each Clevite bearing set is precision-manufactured to exacting tolerances, ensuring proper fit, optimal clearances, and reliable performance in critical engine applications.