Description
Product Specifications
| Parameter | Details |
|---|---|
| Model NO. | 21307 |
| Feature | Long Life, High Speed, Low Noise |
| Specification | 35*80*21mm |
| Trademark | NTN |
| Origin | Japan |
| HS Code | 8482300000 |
| Production Capacity | 500000 |
| Package Size | 5.50cm * 10.00cm * 4.50cm |
| Package Gross Weight | 0.550kg |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Automotive | Gearboxes, Transmission Systems |
| General Machinery | Industrial Fans, Conveyors |
Stop Gearbox Failures — NTN 21307 Spherical Roller Bearing Delivers Reliable Performance
Automotive OEMs and maintenance teams know the cost of unexpected gearbox downtime: production delays, emergency repairs, and compromised vehicle performance. Counterfeit bearings often fail prematurely under heavy loads, while multi-tier distributors struggle to maintain consistent batch quality and delivery timelines. When your assembly line depends on precision components, these risks aren’t just inconvenient—they directly impact your bottom line.
Genuine NTN 21307 Bearings for Automotive Gearbox Longevity
As an official NTN distributor, we supply the NTN 21307 spherical roller bearing—designed specifically for automotive gearboxes requiring long life and reliable operation. With dimensions 35x80x21mm, this bearing combines high-speed capability with low noise performance, critical for modern transmission systems. Our WMS real-time inventory ensures stock availability, eliminating the lead time delays common in traditional distribution channels. Whether you need small-batch trials or bulk OEM supply, we deliver consistent quality backed by ISO 9001 compliant inspections.
Engineered for High-Stress Gearbox Environments
The NTN 21307 spherical roller bearing excels in automotive gearboxes, where it withstands radial and axial loads, shock impacts, and varying temperatures. Its robust design accommodates misalignment, a common challenge in powertrain assemblies, reducing wear on adjacent components. In passenger cars and commercial vehicles alike, this bearing maintains performance integrity across extended service intervals, making it a trusted choice for manufacturers prioritizing durability.
Key Features That Drive Gearbox Performance
The 21307 bearing’s technical specifications directly contribute to its reliability. Its 35mm bore diameter and 80mm outer diameter optimize load distribution, while the 21mm width provides stability during high-torque operation. The long-life feature stems from NTN’s precision manufacturing, ensuring consistent raceway geometry and roller alignment—factors that minimize vibration and extend service life. Low noise operation is achieved through tight tolerance control, critical for meeting modern automotive acoustic standards. Together, these attributes make the NTN 21307 a benchmark for gearbox bearing performance.
Why Authenticity Matters for Your Gearbox Components
Choosing genuine NTN 21307 bearings over gray-market alternatives reduces total cost of ownership. Counterfeit bearings often lack proper heat treatment, leading to premature fatigue and gearbox failure. The resulting downtime can cost manufacturers thousands in lost production, while warranty claims and liability risks further erode profitability. Our bearings come with full traceability documentation, ensuring compliance with export regulations and providing peace of mind that every component meets NTN’s strict quality standards. In automotive manufacturing, where precision is non-negotiable, authenticity isn’t an option—it’s a necessity.
Your Trusted Partner for NTN Bearing Supply
With over 10 years serving automotive OEMs across 50+ countries, we’ve built our reputation on five pillars of reliability: official NTN authorization, ensuring direct access to genuine products; a three-level quality inspection system that verifies every bearing before shipment; dedicated technical support for model selection and failure analysis; global door-to-door logistics with real-time tracking; and flexible OEM customization to meet specific application requirements. Our clients include automotive factories and maintenance service providers who value consistent supply and professional service—proof that we deliver on our承诺 to quality.
Packaging & Shipping
- Carton pallet packaging with protective inner cushioning to prevent damage during transit
- Sample orders available for quality verification before mass production
- Global logistics options including DHL, FedEx, and sea freight to match delivery requirements
- Real-time order tracking provided from warehouse dispatch to final destination
- Flexible minimum order quantities, supporting both emergency repairs and bulk OEM procurement
Get Your NTN 21307 Bearing Quote Today
Don’t let gearbox bearing issues disrupt your production schedule. Send us your model list, application parameters, and order volume, and we’ll provide a formal quotation with brand authorization documents within 24 hours. Our streamlined process ensures you get the right bearings when you need them—minimizing downtime and maximizing productivity.
Frequently Asked Questions
Q: Are these genuine NTN bearings?
A: Yes, we are an official NTN distributor. Every NTN 21307 bearing comes with full traceability documentation and brand authorization certificates to confirm authenticity.
Q: How can I confirm if the 21307 bearing fits my gearbox?
A: Provide your gearbox model or working condition parameters (load, speed, temperature), and our technical team will verify compatibility and offer selection guidance at no cost.
Q: What is your warranty policy?
A: We adhere to NTN’s original warranty standards, covering manufacturing defects with unconditional replacement or refund.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 piece, supporting both emergency maintenance needs and small-batch trials.
Q: How long does shipping take?
A: In-stock bearings are shipped within 3-7 working days. We offer DHL, FedEx, UPS, air, and sea freight options to match your delivery timeline.
Q: How can I verify the bearing’s authenticity?
A: Each bearing includes NTN’s original packaging with防伪 labels and laser marking. We also provide full traceability documents for cross-verification through official channels.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
