Sealed Power 7047MA .50MM Engine Crankshaft Main Bearing Set

The Sealed Power 7047MA is an MA-Series engine crankshaft main bearing set ground to a .50MM (0.50mm) undersize, designed for engines with reground or undersized crankshafts requiring a precision-fit replacement bearing. Manufactured under ISO and QS certified processes, these bearings are engineered to meet or exceed original equipment specifications.

This set features Sealed Power's proprietary A-Series bi-metal aluminum alloy construction, combining an aluminum-tin-silicon bearing surface bonded to a high-strength 1010 steel backing. The silicon content in the alloy provides enhanced surface hardness and can actually help polish crankshaft journals during break-in, making these bearings an excellent choice even when crank surfaces are not perfectly optimized.

Key Features:

• A-Series bi-metal aluminum alloy construction for superior performance
• Greater seizure resistance compared to traditional tri-metal bearing materials
• Silicon-enhanced bearing surface provides greater hardness and wear resistance
• High-strength 1010 steel backing delivers improved corrosion resistance and tighter wall variance control
• Minimizes debris embedding to protect crankshaft journal surfaces
• Exacting tolerances — among the tightest in the industry
• Meets or exceeds OEM specifications
• Proprietary bearing material provides optimal load capacity, embed-ability, conformability, and anti-seizure characteristics
• .50MM undersize for use with reground crankshafts
• ISO and QS certified manufacturing

Sealed Power main bearing sets are a trusted choice for engine rebuilders seeking reliable, precision-engineered components. The 7047MA .50MM is sold as a complete set and is application-specific in design for optimal fit and performance during engine rebuild.