Main bearing - Function and role The main bearing supports the crankshaft in compatible engines and machinery, enabling smooth rotation by maintaining proper oil clearance and carrying radial loads during operation. - Key benefits Provides a precise fit to minimize crankshaft misalignment and vibration Delivers reliable load carrying performance under normal operating conditions Promotes long service life when used with proper lubrication and servicing Finished to tight tolerances to ensure consistent clearance and performance - Compatibility and sizing Designed to fit models that require a main bearing from the applicable bearing family Verify part number and datasheet for exact size and clearance Available in multiple sizes to suit standard mains housings Refer to the product data sheet for exact dimensions and tolerance - Material and construction Bearing materials chosen to balance strength, wear resistance, and lubrication needs Finished to tight tolerances to ensure proper oil film formation and longevity - Performance Maintains crankshaft clearance under operating loads and temperatures Supports consistent rotation with reliable lubrication Designed for durability under normal service conditions - Applications and use scenarios Automotive engine repairs and rebuilds where a main bearing replacement is required Industrial machinery such as generators and pumps that rely on robust crankshaft support Heavy equipment maintenance to prevent oil pressure loss and ensure continuous operation - Quality and reliability Manufactured with quality control checks to ensure dimensional accuracy and fit Compatible with standard bearing housings and commonly used replacement parts