Car Engine Bearings
Precision bearings for every rotating component in automotive engine systems — from alternators and starters to timing belt tensioners and idler pulleys.
Engine Bearing Solutions
Modern automotive engines rely on multiple precision bearings to drive accessories, maintain belt tension, and generate electrical power. OTT manufactures all three critical bearing types for engine systems, each engineered to withstand high speeds, extreme temperatures, and continuous operation.
Our engine bearings have been validated through a rigorous 1,004-hour endurance test conducted by a Russian OEM partner, and are capable of reliable cold starts in environments as low as -60°C.
Bearing Types for Engine Systems
Alternator & Starter Bearings
Ultra-low noise deep groove ball bearings designed for high-speed rotation in automotive electrical systems. 60+ models available.
- ✓ Passed 1,004-hour endurance test
- ✓ Cold-start capable to -60°C
- ✓ Z3V3 ultra-low noise grade
- ✓ Multiple seal & grease options
Tensioner & Idler Pulley Bearings
OEM-grade tensioner bearings for timing and serpentine belt systems. Supplying assembly plants in Turkey, Brazil, Russia, and the Middle East.
- ✓ 800–1000 RPM high-speed rated
- ✓ -20°C to 130°C operating range
- ✓ 500+ hour life test passed
- ✓ Bare bearings or complete assemblies
A/C Compressor Bearings
Specialized bearings for air conditioning compressor clutches, designed to handle refrigerant exposure and rapid thermal cycling.
- ✓ Chemical-resistant seals
- ✓ Refrigerant-compatible grease
- ✓ Low friction for fuel efficiency
- ✓ High-temperature rated
Vehicle Brands Covered
OTT engine bearings are cross-referenced to OEM part numbers for 40+ vehicle brands worldwide.
Need Engine Bearings?
Send us your OEM part numbers or vehicle application — we'll provide cross-reference and pricing within 12 hours.
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