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 |
| Customerized |
Customizable |
| Sample |
Available |
Application Industries
| Industry |
Typical Equipment |
| Automotive |
Gearboxes, Transmission Systems |
| Industrial Manufacturing |
Fan Systems, Mechanical Drives |
| Mechanical Engineering |
Power Transmission Equipment |
Minimize Downtime with Genuine 21307 Spherical Roller Bearings
Equipment failures due to substandard bearings cost manufacturers thousands in lost production each year. When gearboxes or car industry machinery break down, the root cause often traces to bearings that fail prematurely—compromised by poor materials or imprecise manufacturing. Sourcing reliable replacements with minimal lead time remains a persistent challenge for maintenance teams and buyers alike.
Genuine NTN 21307 Bearings for Critical Applications
The 21307 spherical roller bearing is engineered to address these pain points, combining NTN’s long-life design with high-speed performance and low noise operation. As a professional bearing supplier with decades of export experience, we ensure every unit meets strict quality standards, supported by our in-house testing facilities and ISO 9001:2015 certified processes. Whether for gearbox assemblies or car industry applications, this 35x80x21mm bearing delivers consistent performance under demanding conditions.
Engineered for Demanding Operating Conditions
This spherical roller bearing excels in applications requiring high radial load capacity and moderate axial load handling, common in automotive gearboxes and industrial fan systems. Its robust construction maintains stability even at high rotational speeds, while the low noise feature makes it suitable for noise-sensitive environments. The 21307’s design accommodates slight misalignment, reducing stress on adjacent components and extending overall equipment life.
Key Features Driving Reliable Performance
The 21307 spherical roller bearing’s 35mm bore diameter, 80mm outer diameter, and 21mm width balance compact size with load-bearing capability—a critical factor for gearbox integration. NTN’s long-life technology, derived from premium raw materials and precision manufacturing, ensures extended service intervals compared to generic alternatives. The bearing’s high-speed capability makes it ideal for applications where rotational efficiency directly impacts productivity, while its customizable options allow adaptation to specific industrial requirements.
The Hidden Costs of Non-Genuine Bearings
Choosing uncertified bearings may seem cost-effective initially, but the true expense emerges through frequent replacements, unplanned downtime, and potential damage to expensive equipment. Genuine NTN bearings, like the 21307, adhere to ISO, ABMA, and DIN international standards, validated through comprehensive dimensional and performance testing in our laboratory. The 12-month warranty further protects your investment, with clear processes for replacement or refund on qualified defective products—avoiding the hidden costs of counterfeit components.
Why Global Buyers Partner With Us
With operations since 2005, we’ve built a reputation for reliability across Europe, North America, Southeast Asia, and the Middle East. Our one-stop service covers everything from technical选型 support to global shipping, with a professional R&D team available for application-specific guidance. We maintain flexible order policies, including 1 piece MOQ for standard bearings and sample orders without minimum quantity, ensuring you get the exact components you need when you need them. Our multiple payment options—T/T, Credit Card, and Alibaba platform orders—provide secure transaction flexibility for international buyers.
Packaging & Shipping
- Carton pallet packaging for secure transportation
- Sample orders shipped within 3-5 working days
- Bulk orders delivered in 5-15 working days
- Multiple logistics options including express and sea freight
- Free samples available for distributors and wholesalers (freight borne by customer)
Get Your 21307 Bearing Shipped Today
Don’t let equipment downtime impact your production schedule. Whether you need a single replacement bearing or a bulk order, our streamlined process ensures quick confirmation and dispatch. Send your inquiry with application details, and our technical team will help verify compatibility—ensuring you receive the right bearing for your specific needs.
Frequently Asked Questions
Q: Are these genuine NTN bearings?
A: Yes, we supply genuine original NTN bearings sourced through authorized channels, with full traceability documentation available upon request.
Q: How can I confirm if the 21307 is suitable for my gearbox?
A: Provide your equipment model or technical specifications, and our professional team will conduct free compatibility checks to ensure proper选型.
Q: What warranty coverage do you offer?
A: All products come with a 12-month warranty from the date of delivery, covering manufacturing defects with free replacement or refund options.
Q: What is the minimum order quantity?
A: Standard bearings like the 21307 have a 1 piece MOQ, with sample orders available without minimum quantity requirements.
Q: How quickly can you ship after order confirmation?
A: Sample orders ship within 3-5 working days, while bulk orders typically dispatch within 5-15 working days depending on volume.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
