DG4880 Open Non-Standard Auto Transmission Deep Groove Bearing

DG4880 non-standard single-row open deep groove ball bearing, overall dimension 48mm inner bore × 80mm outer diameter × 16mm width, interchange original JTEKT/Koyo DG4880 transmission bearing series. Open design without rubber seals, equipped with stamped low-carbon steel cage and factory standard C0 internal clearance. It bears radial load and slight bidirectional axial load, maintains stable low-noise high-speed rotation under long-term shifting vibration inside gearbox housing. Produced with fully quenched high-purity GCr15 chrome bearing steel and strict dimensional tolerance control, fully interchangeable with OEM DG4880. Complete formal quotation will be provided within 24 hours upon inquiry.

• Open structure enables full circulation of gearbox transmission oil, excellent heat dissipation performance, eliminates aging, swelling and leakage risks of rubber seals under long-time high-temperature oil soaking
• Superfinished deep groove raceway reduces rolling friction coefficient, stable continuous operation under frequent gear shift and variable-speed impact
• Uniform high-hardness GCr15 raw steel delivers outstanding wear resistance and anti-fatigue performance, effectively extend automobile transmission service cycle
• OEM unified matching overall dimension, direct replacement without modifying gearbox housing, shaft and assembly accessories
• Lightweight stamped steel cage lowers rotation inertia, perfectly fits medium-high speed continuous working conditions of vehicle transmissions
• Standard P0 precision grade, P5 / C3 clearance customizable to meet mainstream auto OEM assembly matching standards
• Stable mass production supply, cost-effective for aftermarket repair and bulk wholesale orders

Passenger car automatic gearbox differential shafts, vehicle transmission intermediate shafts, light commercial vehicle reducers, small agricultural machinery transmission components.

25+ years professional manufacturer of 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 anti-wear gearbox lubricant filling service. One-on-one professional installation technical guidance and formal detailed quotation within 24h for all RFQs. Stable mass production capacity supports long-term bulk aftermarket and OEM 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 durability test
• Continuous vibration load rotation fatigue life cycle test
• Full dimension tolerance sorting inspection
• 100% visual appearance marking check before packaging
• Random sampling high-speed performance test before shipment

All DG4880 bearings pass multi-process strict factory inspection.

Send bulk inquiry for DG4880 open standard transmission bearings and obtain the following full 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.

Q1: What brand original model does DG4880 interchange?
A1: DG4880 fully replaces JTEKT and Koyo original DG4880 transmission bearing, consistent in all installation dimensions.
Q2: Difference between open DG4880 and rubber sealed bearings?
A1: Open structure has no rubber sealing parts, relies on internal gearbox circulating oil for lubrication and heat dissipation, installed inside transmission housing; rubber sealed bearings are used for external exposed dusty shafts with grease lubrication.
Q3: Can DG4880 replace original OEM bearings directly?
A3: Yes, inner bore, outer diameter and width dimensions are fully consistent, no modification to gearbox components required during replacement.