21307 Spherical Roller Bearing 35x80x21mm NTN Long Life for Gearbox & Car Industries

Product Specifications

Application Industries

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

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