Product Specifications
| Parameter |
Details |
| Model NO. |
21307 |
| Feature |
Long Life, High Speed, Low Noise |
| Specification |
35x80x21mm |
| Trademark |
NTN |
| Origin |
Japan |
| HS Code |
8482300000 |
| Sample |
Available |
| Customerized |
Customizable |
| Transport Package |
Carton Pallet |
| Package Size |
5.50cm × 10.00cm × 4.50cm |
| Package Gross Weight |
0.550kg |
Application Industries
| Industry |
Typical Equipment |
| Industrial Manufacturing |
Gearboxes, Conveyors, Reducers |
| Automotive |
Transmission Systems, Axles |
| HVAC |
Industrial Fans, Pumps |
Minimize Downtime with Genuine NTN 21307 Spherical Roller Bearing
Equipment failures due to substandard bearings cost manufacturers thousands in lost production each year. When a spherical roller bearing fails prematurely in critical machinery like gearboxes or conveyors, the downtime can halt entire production lines. Sourcing authentic bearings with reliable delivery and proper technical support remains a challenge for many maintenance teams and buyers.
Genuine NTN 21307 Bearings Delivered When You Need Them
The NTN 21307 spherical roller bearing is engineered to address these pain points with its long service life, high-speed capability, and low noise operation. As a professional bearing supplier with decades of export experience, we stock genuine NTN bearings to ensure quick fulfillment—sample orders ship within 3-5 working days and bulk orders within 5-15 days. This 35x80x21mm industrial machinery bearing is ideal for applications requiring heavy-duty performance, from gearboxes to industrial fans.
Engineered for Heavy-Duty Industrial Conditions
This NTN spherical roller bearing excels in demanding environments where heavy radial and axial loads are present. Its robust design handles high-speed rotation while maintaining stability, making it suitable for continuous operation in industrial machinery. Whether used in manufacturing equipment, automotive transmission systems, or large fans, the 21307 bearing delivers consistent performance under varying load conditions.
Key Technical Features for Reliable Operation
The 35mm bore diameter, 80mm outer diameter, and 21mm width of the NTN 21307 make it a versatile choice for standard industrial applications. Its low noise operation (Z2-Z4 grade equivalent) ensures compatibility with noise-sensitive environments, while the long-life design reduces maintenance frequency. The bearing’s high-speed capability allows integration into dynamic systems without compromising performance, and its customizable options mean it can be adapted to specific application requirements when standard configurations aren’t sufficient.
Why Authenticity Matters for Your Bottom Line
Counterfeit spherical roller bearings may offer lower upfront costs but often result in hidden expenses: premature failures, increased energy consumption, and potential damage to connected components. Genuine NTN bearings meet strict international standards (ISO, ABMA, DIN) and undergo rigorous quality control, ensuring predictable performance and longer service intervals. Investing in authentic industrial machinery bearings reduces total cost of ownership by minimizing unplanned downtime and maintenance expenses.
Our Commitment to Reliable Supply
With ISO 9001:2015 and ISO 14001 certifications, we maintain strict quality management throughout our supply chain. Our one-stop service covers everything from bearing selection to global delivery, supported by a professional technical team with extensive application experience. We offer flexible ordering with 1 piece MOQ for standard bearings and provide free samples (freight paid by customer) to distributors and wholesalers. All products come with a 12-month warranty, with free replacement or refund available for qualified defective items.
Packaging & Shipping
- Original NTN packaging with carton pallet for secure transportation
- Sample orders shipped within 3-5 working days
- Bulk orders delivered in 5-15 working days
- Multiple logistics options including express, air, and sea freight
- 1 piece MOQ available for standard bearings
Get Your NTN 21307 Bearing Today
Don’t let bearing issues disrupt your operations. Whether you need a single unit for emergency repair or bulk quantities for production, we ensure prompt delivery of genuine NTN 21307 spherical roller bearings. Contact us with your requirements, and our technical team will help confirm compatibility with your equipment.
Frequently Asked Questions
Q: Are these genuine NTN bearings?
A: Yes, we supply genuine original NTN bearings sourced through authorized channels, ensuring full traceability and authenticity.
Q: How do I confirm if the 21307 is compatible with my equipment?
A: Provide your equipment model or technical specifications, and our professional team will verify compatibility and offer selection guidance.
Q: What is the warranty period for this bearing?
A: All NTN bearings come with a 12-month warranty from the date of customer receipt, covering manufacturing defects.
Q: What is the minimum order quantity?
A: We accept 1 piece MOQ for standard bearings, supporting both emergency repairs and small-batch purchases.
Q: How long does shipping take?
A: Sample orders ship within 3-5 working days, while bulk orders take 5-15 working days depending on quantity and destination.
Q: How can I verify the bearing’s authenticity?
A: Genuine NTN bearings feature proper branding, packaging, and serial numbers. We provide documentation to support traceability upon request.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
