HTFB31-13E Open E-Type High Precision Auto Gearbox Bearing

HTFB31-13E non-standard open deep groove ball bearing, dimension 31mm bore × 76mm outer diameter × 13mm width, HTFB dedicated transmission series with E upgraded precision tolerance. Open design without rubber seals, equipped with stamped steel cage and standard C0 clearance. It bears radial load and slight bidirectional axial load, operates stably and low-noise under long-term high-speed shifting vibration. Made of fully quenched high-purity GCr15 chrome steel with tighter dimensional tolerance, fully interchangeable with original OEM HTFB31-13E. Complete formal quotation will be provided within 24 hours upon inquiry.

• Open structure enables full circulation of gearbox oil, excellent heat dissipation, no rubber seal aging or swelling risk under long-time high-temperature oil soaking
• E-grade upgraded dimensional tolerance, higher roundness and surface precision, perfect fit for high-precision automatic transmission assembly
• Superfinished deep groove raceway reduces rolling friction, stable continuous operation under frequent gear shift impact
• Uniform high-hardness GCr15 steel delivers outstanding wear and anti-fatigue performance to extend gearbox service cycle
• OEM unified overall dimension, direct replacement without modifying gearbox housing and shaft parts
• Lightweight stamped steel cage lowers rotation inertia, adapts to medium-high speed continuous transmission working conditions
• Standard P0 precision grade, customizable P6/C3 clearance to meet automotive OEM assembly matching standards

Passenger car automatic gearbox auxiliary & intermediate shafts, small CVT transmission assemblies, light commercial vehicle reducers, mini agricultural machinery transmission components.

Dimension drawings and technical spec sheets can be provided on request.

25+ years professional manufacturer of HTFB series non-standard automotive gearbox bearings. All finished bearings pass high-speed continuous rotation test, shock load test and long-cycle fatigue durability test before delivery. Support customized anti-rust surface coating and special high-temperature gearbox lubricant filling service. One-on-one professional installation technical guidance and formal quotation within 24h for all RFQs. Stable mass production capacity satisfies bulk OEM and global distributor orders, factory direct selling price, stable consistent quality and punctual batch delivery.

• Raw GCr15 steel hardness & chemical composition incoming inspection
• High-precision raceway superfinishing roughness detection
• Open bearing gear oil circulation high-temperature aging test
• Continuous vibration load rotation fatigue life test
• Full dimension tolerance sorting inspection
• 100% visual appearance marking check before packaging
• Random sampling high-speed performance test before shipment

All HTFB31-13E bearings pass multi-process strict factory inspection.

Send bulk inquiry for HTFB31-13E open high-precision transmission bearings and obtain the following support:

1. Complete formal detailed quotation within 24 hours
2. Standard dimension drawings & press-fit installation operation guidance
3. Custom anti-rust surface treatment and special transmission lubricant filling service
4. Exclusive long-term bulk factory wholesale price without intermediate markup

Large-volume OEM cooperation is welcome anytime.