Automotive Bearing Manufacturer
Since 2011, OTT has supplied precision bearings to 40+ vehicle brands across 50+ countries. Our patented Carbonitriding (C-A) heat treatment delivers 5–10× longer lifespan — proven in 1,004-hour endurance testing.
Complete Automotive Bearing Solutions
5 core product lines covering key automotive bearing applications. Cross-referenced to SKF, FAG, KOYO, NTN, NSK.
Wheel Hub Bearings
Pre-sealed, pre-lubricated hub assemblies for passenger cars and light trucks.
Tensioner & Idler Pulley Bearings
OEM-grade tensioner & idler pulley bearings — supplying assembly plants and aftermarket worldwide.
Alternator & Starter Bearings
High-speed, low-noise bearings for automotive alternators and starter motors.
A/C Compressor Bearings
Specialized bearings for automotive air conditioning compressor clutches.
Go-Kart Bearings
Precision bearings for go-kart wheels, axles, steering, and engine accessories.
Application Areas
Car Engines
Alternator, starter, and tensioner bearings for all major car engine systems.
A/C Compressors
Specialized bearings for automotive air conditioning compressor clutches.
Go-Kart Racing
Precision bearings for go-kart wheels, axles, and steering systems.
Wheel Hubs
Pre-sealed hub bearings for passenger cars, SUVs, and light trucks.
Why Choose OTT Bearing?
Carbonitriding (C-A) Technology
Our patented heat treatment improves bearing life by 5–10×. Proven in 1,004-hour endurance testing.
24 Automated Production Lines
20,000+ m² facility with CNC grinding and automated assembly. 20 million sets annual capacity.
IATF 16949 Quality System
Automotive industry gold standard. 100% incoming material inspection and final vibration testing.
40+ OEM Brands Covered
Cross-referenced to Ford, GM, Toyota, VW, BMW, Mercedes-Benz, Hyundai, KIA, and more.
143 Patents
Continuous R&D in bearing materials, sealing, heat treatment, and precision manufacturing.
Global OEM Partners
Trusted by HSC, GPC, Mando, GMB, RegalRexnord, HITACHI, and leading automotive companies.
World-Class Manufacturing Facility
Located in Jiashan, Zhejiang, our 20,000+ m² facility houses 24 fully automated production lines with international-standard inspection equipment — from CNC grinding to automated assembly.
Product Gallery
Precision-engineered bearings for every automotive application
Trusted by Leading OEM Partners Worldwide
How to Order
Submit Requirements
Send bearing model numbers, quantities, and specifications.
Engineering Review
Detailed quotation within 12 hours.
12 hoursSample & Approval
Free samples shipped to your door for testing.
3-7 daysProduction & Delivery
Mass production with full QC. FOB Ningbo/Shanghai.
15-30 daysReady to Source Quality Bearings?
Factory-direct pricing on automotive bearings. Free samples — reply within 12 hours.