NTN 6307 Deep Groove Ball Bearing Japan High Quality

Product Specifications

Application Suitability

Struggling with Bearing Reliability? The NTN 6307 Deep Groove Ball Bearing Delivers Consistent Performance

Many maintenance managers face the frustration of unexpected downtime caused by premature bearing failure. Whether it’s misalignment issues, inconsistent lubrication, or subpar material quality, the wrong bearing choice can lead to costly repairs and production delays. Sourcing the right model across multiple brands often means juggling multiple suppliers, each with their own lead times and minimum order requirements.

Engineered for Dependable Service in Critical Applications

The NTN 6307 deep groove ball bearing addresses these challenges with its robust design and versatile performance. As part of our comprehensive bearing portfolio, this model benefits from our ISO 9001 certified quality control processes, ensuring each unit meets strict dimensional and material standards. Available with Zz, 2RS, or open seals, it adapts to diverse operating conditions—from clean industrial environments to applications requiring enhanced contamination protection. With our extensive inventory, we support both small-scale repairs and large production runs, eliminating the need for multiple vendor relationships.

Optimal Performance in Radial Load Applications

Designed as a single-row radial bearing, the 6307 excels in applications where radial loads are primary. Its 35mm bore diameter, 80mm outer diameter, and 21mm width make it suitable for medium-duty equipment such as electric motors, conveyors, and hydraulic pumps. The non-aligning design requires precise mounting, making it ideal for rigid shaft arrangements where misalignment is minimal. When paired with appropriate lubrication—either grease or oil—it maintains stable operation across a wide range of speeds, reducing the risk of overheating and wear.

Key Engineering Features That Impact Longevity

The bearing’s performance is rooted in several critical specifications. Constructed from high-grade bearing steel, it offers excellent hardness and wear resistance, essential for withstanding continuous operation under load. Precision ratings from P0 to P4 allow selection based on application requirements—P4 for high-speed machinery requiring minimal vibration, and P0 for general-purpose use. Vibration classes Z1V1 to Z3V3 further refine performance, with higher classes reducing noise and resonance in sensitive equipment. The unseparated design ensures easy installation and maintenance, while the choice of seal types lets users balance protection against friction: 2RS seals for dusty environments, Zz for high-temperature applications, or open designs for frequent lubrication access.

Total Cost of Ownership: Why Quality Matters More Than Price

Choosing a low-cost bearing may seem economical initially, but the hidden costs of early failure—unplanned downtime, labor for replacement, and potential damage to adjacent components—quickly erase savings. The NTN 6307’s adherence to strict manufacturing standards translates to longer service life, reducing replacement frequency. Our ISO 9001 compliant processes include raw material testing and成品 inspection, ensuring each bearing meets dimensional accuracy and hardness requirements. By selecting the appropriate precision and vibration class upfront, you minimize the risk of premature wear, directly impacting your equipment’s overall reliability and operational costs.

Quality You Can Rely On

Packaging & Shipping

• Standard packaging includes carton boxes, with pallet options for bulk orders
• Stock items ship within 1-2 business days of order confirmation
• Multiple logistics options available: express courier, air freight, or sea shipping
• Low minimum order quantity supported, from single units to full container loads

Get Your NTN 6307 Bearing Quote Today

Whether you need a single replacement bearing or a bulk order for production, we’re ready to assist. Provide your required seal type, precision class, and quantity, and our team will prepare a competitive quote with lead time. We also welcome inquiries for alternative brands and custom specifications—our extensive network ensures we can source even hard-to-find models.

Frequently Asked Questions