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 |
| Customerized | Customizable |
| Sample | Available |
| Transport Package | Carton Pallet |
| Package Size | 5.50cm * 10.00cm * 4.50cm |
| Package Gross Weight | 0.550kg |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Automotive | Transmission Systems, Axle Assemblies |
| General Machinery | Gearboxes, Industrial Fans, Pumps |
Stop Gearbox Downtime with Genuine NTN 21307 Spherical Roller Bearings
Manufacturing plants lose an average of 80 production hours annually due to bearing failures, with counterfeit bearings accounting for 62% of premature gearbox breakdowns. When your machinery gearbox stalls, every minute of downtime erodes profits—especially when replacement parts arrive weeks late with questionable traceability documents that risk customs delays.
Genuine NTN 21307 Bearings: In Stock and Traceable
As an official NTN distributor, we stock the Heavy Duty NTN Spherical Roller Bearing 21307 (35x80x21mm) with full traceability, eliminating the risks of gray-market sourcing. Our WMS real-time inventory system ensures this gearbox bearing is ready for immediate dispatch, while our ISO 9001 compliant three-level inspection guarantees it meets NTN’s strict OEM standards for machinery applications.
Engineered for Heavy-Duty Gearbox Performance
The NTN 21307 Spherical Roller Bearing excels in high-load, high-speed machinery gearboxes, where misalignment and radial forces are constant challenges. Its self-aligning design compensates for shaft deflection up to 2 degrees, while the long-life construction maintains stability even under continuous operation—critical for maintaining production schedules in automotive and general machinery sectors.
Key Technical Advantages for Gearbox Reliability
The 35x80x21mm dimensions of the NTN 21307 Bearing are precision-engineered to fit standard gearbox housings, ensuring straightforward replacement. Its high-speed capability reduces rotational friction, lowering energy consumption and operating temperatures. The low-noise feature is particularly valuable in manufacturing environments where noise control is essential, while the customizable options allow adaptation to specific machinery requirements—from seals to lubrication.
Why Genuine NTN Bearings Reduce Total Cost of Ownership
Counterfeit spherical roller bearings may cost 30% less upfront, but they typically fail within 30% of the lifespan of genuine NTN products. A single gearbox failure from a fake bearing can result in $12,000+ in repair costs, production losses, and secondary component damage. Our 100% genuine NTN 21307 Bearing, backed by full traceability documentation, avoids these hidden costs by delivering consistent performance and meeting international export compliance standards.
Why Global Manufacturers Trust Our NTN Supply
With 10+ years serving 50+ countries, we provide: official NTN authorization with batch-specific traceability certificates; dedicated technical support for gearbox bearing选型 and failure analysis; WMS real-time inventory ensuring 98% order fulfillment from stock; global door-to-door logistics with export documentation; and flexible OEM customization to match your machinery’s exact specifications. Our clients include automotive OEMs and machinery manufacturers who require reliable, batch-stable bearing supply.
Packaging & Shipping
- Original NTN packaging with product certification and traceability documents
- Carton pallet packaging for secure transport
- 现货 available for dispatch within 24 hours
- Global door-to-door logistics via DHL, FedEx, or sea/air freight
- Real-time tracking provided from warehouse to delivery
- Minimum order: 1 unit, supporting emergency repairs and small-batch trials
Get Your NTN 21307 Bearing Shipped Today
Don’t let gearbox downtime impact your production targets. Send us your NTN 21307 Bearing quantity and application details, and we’ll confirm stock availability and provide a formal quotation within 24 hours—including brand authorization and traceability certificates. The sooner you order, the sooner your machinery returns to full operation.
Frequently Asked Questions
Q: Are these genuine NTN bearings?
A: Yes, we are an official NTN distributor. Every NTN 21307 Bearing comes with complete traceability documentation and brand authorization certificates.
Q: How do I confirm if the 21307 is compatible with my gearbox?
A: Provide your gearbox model or operating parameters (load, speed, temperature), and our technical team will verify compatibility at no cost.
Q: What is your warranty policy?
A: We stand by NTN’s original warranty. Any manufacturing defects will be replaced unconditionally with full after-sales support.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 unit to support emergency repairs and small-batch testing.
Q: How quickly can you ship?
A: Stock items are dispatched within 24 hours, with global delivery typically taking 3-7 business days via express courier.
Q: How can I verify the bearing’s authenticity?
A: Each bearing includes NTN’s original packaging with security features, laser-etched part numbers, and batch codes traceable through NTN’s official channels. We provide all necessary documentation for verification.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
