B65-27 Open CVT Pulley Special Deep Groove Bearing

B65-27 non-standard single-row open deep groove ball bearing, overall dimension 65mm inner bore × 100mm outer diameter × 17mm width, dedicated for CVT primary pulley assembly. Open design without rubber seals, equipped with stamped low-carbon steel cage and C0 standard internal clearance. It bears heavy radial load and slight bidirectional axial load, running stably and low-noise under long-time high-speed variable vibration and high-temperature transmission oil environment inside CVT housing. Made of fully quenched high-purity GCr15 chrome bearing steel with strict dimensional tolerance control, fully interchangeable with original OEM B65-27. Complete formal quotation will be provided within 24 hours upon inquiry.

• Open structure allows full flow of CVT transmission oil, excellent heat dissipation, avoids aging, swelling and leakage defects of rubber seals under long-term high-temperature oil immersion
• Superfinished raceway reduces rolling friction, stable continuous rotation under frequent variable torque impact of pulley operation
• High-hardness integral GCr15 steel inner and outer rings, outstanding wear and fatigue resistance, greatly extend CVT overall service life
• OEM unified installation dimensions, direct replacement without modifying pulley housing, shaft and matching accessories
• Lightweight stamped steel cage reduces rotation inertia, suitable for long-term high-speed operation of CVT transmission
• Standard P0 precision grade, P6 / C3 clearance can be customized to meet auto OEM assembly requirements
• Stable mass production, cost-effective for maintenance market and bulk wholesale orders

Passenger car CVT primary drive pulley assemblies, automatic gearbox intermediate shafts, light commercial vehicle heavy-duty reducers, medium agricultural machinery transmission parts.

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

25+ years professional manufacturer of B series non-standard CVT and gearbox bearings. All finished bearings pass high-speed rotation test, shock load test and long-cycle fatigue durability test before delivery. Custom anti-rust coating and high-temperature transmission special lubricant filling available. One-on-one professional installation guidance and formal quotation within 24 hours for all inquiries. Stable mass production supports long-term bulk aftermarket and OEM orders, factory direct price, stable quality and on-time delivery.

• Raw GCr15 steel hardness and chemical composition incoming inspection
• High-precision raceway superfinishing roughness inspection
• Open bearing transmission oil high-temperature aging durability test
• Continuous vibration fatigue rotation life cycle test
• Full dimension tolerance sorting inspection
• 100% visual appearance inspection before packaging
• Random sampling high-speed performance test before shipment

All B65-27 bearings pass multi-process strict factory inspection.

Send bulk inquiry for B65-27 open CVT pulley bearings and get full support as follows:

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

OEM mass cooperation is warmly welcomed.

Q1: What is the difference between open B65-27 and sealed bearings?
A1: Open bearing has no rubber seals, installed inside CVT housing relying on circulating oil for lubrication and cooling; sealed bearings are used for external exposed dusty shafts with grease lubrication.

Q2: Can B65-27 replace original OEM bearings directly?
A2: Yes, inner bore, outer diameter and width are fully consistent, no modification to CVT components needed during replacement.

Q3: Suitable lubrication mode?
A3: Designed for CVT circulating transmission oil lubrication; high-speed anti-wear gear grease can be filled for independent separate assembly.