ACL Bearings 5M1882-.75 Main Bearing Set Undersize - 0.75mm

The ACL Bearings 5M1882-.75 is a precision-engineered main bearing set designed for engine rebuilds requiring 0.75mm undersize bearings. This set is specifically manufactured for crankshafts that have been ground 0.75mm (approximately 0.030 inches) undersize during reconditioning or performance machining.

Key Features:

• 0.75mm undersize specification for machined crankshaft journals
• Trimetal construction combining copper-lead overlay, aluminum-tin intermediate layer, and hardened steel backing
• Hardened steel backs provide enhanced support and improved retention within the housing
• Increased crush factor ensures secure bearing retention during high-load operation
• Improved eccentricity design compensates for bore distortion at high-speed operation
• Enhanced heat dissipation through optimized thermal transfer properties
• Dark tarnished coloration from electroplating process (varies from black to blue-brown)

Application Notes:

• Designed for use with crankshafts that have been precision-ground 0.75mm undersize
• Ideal for engine rebuilds, performance applications, and crankshaft reconditioning
• Proper measuring and clearance verification with Plastigage recommended during installation
• Recommended oil clearance: 0.00075-0.001 inch per inch of journal diameter as a starting point

ACL Bearings has over 70 years of experience manufacturing precision engine bearings in Tasmania, Australia. Their products are trusted by professional engine builders and motorsport teams worldwide, with applications ranging from street performance to professional racing.