B43Z-7 Open Non-Standard CVT Transmission Deep Groove Bearing
B43Z-7 non-standard single-row open deep groove ball bearing, dimension 43mm inner bore × 83mm outer diameter × 13.5mm width, suffix Z means optimized internal raceway structure for CVT high-temperature working environment, fully interchangeable with original NSK B43-7 transmission bearing, core matching Toyota K310, K313 series CVT gearbox pulley and intermediate shafts. 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, runs stable and low-noise under long-term high-speed variable vibration and high-temperature CVT oil inside transmission housing. Produced with fully quenched high-purity GCr15 chrome bearing steel and strict dimensional tolerance control, fully compatible with OEM B43Z-7 assembly requirements. Complete formal quotation will be provided within 24 hours upon inquiry.
- Open structure enables full circulation of CVT transmission oil, outstanding heat dissipation performance, eliminates aging, swelling and leakage risks of rubber seals under long-time high-temperature oil soaking
- Z-type optimized raceway finish reduces rolling friction coefficient, stable continuous rotation under frequent pulley variable-speed torque impact, less heat generation during high-speed operation
- Uniform high-hardness GCr15 raw steel delivers outstanding wear resistance and anti-fatigue performance, effectively extend whole CVT service cycle
- OEM unified matching overall dimension, direct replacement without modifying pulley housing, intermediate shaft and assembly accessories
- Lightweight stamped steel cage lowers rotation inertia, perfectly fits continuous high-speed working conditions of CVT variable transmission
- Standard P0 precision grade, P6 / C3 clearance customizable to meet mainstream auto OEM assembly matching standards
- Stable mass production supply, cost-effective for auto repair aftermarket and bulk OEM supporting orders
Toyota K310, K313 CVT transmission primary and secondary pulley assemblies, passenger car automatic gearbox differential shafts, light commercial vehicle heavy-load reducers, medium agricultural machinery transmission core components.
| Model | B43Z-7 Open Deep Groove Ball Bearing |
|---|---|
| Inner bore d | 43 mm |
| Outer diameter D | 83 mm |
| Width B | 13.5 mm |
| Seal structure | Open type, only suitable for CVT circulating oil lubrication |
| Cage | Stamped low carbon steel cage |
| Internal clearance | C0 standard clearance, C3 optional |
| Material | High-purity GCr15 chrome bearing steel |
| Basic dynamic load | 29.1 kN |
| Basic static load | 19.3 kN |
| Max oil lubrication limiting speed | 4750 r/min |
| Net weight | 0.36 kg |
| Working temperature range | -20℃ ~ +130℃ |
| Accuracy grade | P0 standard, P6 customizable |
| Cross reference | B43Z-7, B43-7, NSK B43-7 |
| Dimension drawings and technical spec sheets | can be provided on request. |
25+ years professional manufacturer of B series non-standard CVT & 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 CVT lubricant filling service. One-on-one professional pulley 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 Z raceway superfinishing roughness detection
- Open bearing CVT 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 B43Z-7 bearings pass multi-process strict factory inspection.
Send bulk inquiry for B43Z-7 open CVT transmission bearings and obtain the following full support:
- Complete formal detailed quotation within 24 hours
- Standard dimension drawings & pulley press-fit installation operation guidance
- Custom anti-rust surface treatment and special CVT transmission lubricant filling service
- Exclusive long-term bulk factory wholesale price without intermediate markup
Large-volume OEM cooperation is welcome anytime.
Q1: What does suffix Z stand for in B43Z-7?
A1: Z represents super-finished optimized deep raceway structure, lower friction and better heat dissipation compared with standard B43-7 base model, suitable for long-term high-speed CVT operation.
Q2: Difference between open B43Z-7 and rubber sealed bearings?
A2: Open structure has no rubber sealing parts, relies on internal CVT 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 B43Z-7 replace original NSK B43-7 directly?
A3: Yes, inner bore, outer diameter and width dimensions are fully consistent, no modification to CVT pulley components required during replacement.
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