Japan Koyo 6334 6336 6338 Deep Groove Ball Bearing

Product Specifications

Application Suitability

Need Reliable Deep Groove Ball Bearings? Here’s What to Check for 6334, 6336, 6338 Models

Finding the right deep groove ball bearings for high-speed industrial applications can be challenging. Many buyers face issues with premature failure due to incorrect clearance or poor material quality, while others struggle to source multiple models from a single supplier. As someone who has worked with bearing procurement for over a decade, I’ve seen how these small components can cause costly downtime when not properly selected.

Engineered for Consistent Performance in Demanding Settings

This Japan Koyo deep groove ball bearing series (6334, 6336, 6338) addresses common industry pain points through its precision manufacturing and versatile design. With ISO 9001 compliant production processes and rich stock availability, we ensure you get bearings that meet exact specifications without long lead times. Whether used in high-torque gearboxes or continuous-duty conveyor systems, these bearings deliver reliable radial load support with low noise operation—critical for maintaining equipment efficiency.

Optimal Performance in High-Speed, Heavy-Load Environments

These bearings excel in applications where rotational speed and radial load capacity are paramount. With bore diameters ranging from 170mm to 190mm and outer diameters up to 400mm, they’re ideal for large industrial motors, compressors, and heavy machinery. The 0° contact angle ensures pure radial load handling, while the single-row design minimizes friction at speeds up to 3600 RPM (depending on lubrication and clearance). In dusty or high-moisture environments, the bearing steel construction provides superior corrosion resistance compared to standard alloys.

Key Engineering Features That Impact Longevity

Three critical specifications determine the performance of these deep groove ball bearings: precision rating, clearance, and lubrication. The P0 to P4 precision grades allow selection based on application tolerance requirements—P4 is recommended for CNC machinery where minimal runout is essential, while P0 suffices for general industrial use. Clearance options (C0, C2, C3) accommodate thermal expansion: C3 is ideal for high-temperature applications like steel mills, preventing seizure during operation. Grease lubrication is standard for most scenarios, but oil lubrication can be specified for continuous high-speed运转, reducing operating temperature by up to 15°C in testing.

Why Choosing the Right Bearing Reduces Total Cost

Investing in quality bearings like the Koyo 6334-6338 series lowers long-term costs by minimizing downtime and maintenance. A bearing with insufficient load capacity or incorrect clearance may fail within months, leading to production halts and replacement expenses. For example, in a conveyor system operating 24/7, a failed bearing can cost over $5,000 in lost productivity. These Koyo bearings, with their long-life design and strict material testing (including hardness checks to HRC 58-62), typically outlast budget alternatives by 2-3 times, delivering better value despite a higher initial price.

Quality Assurance You Can Verify

Packaging & Shipping

• Packaged in cartons with palletized bulk options for large orders
• Rich stock availability for immediate dispatch on standard models
• Flexible shipping via sea (for bulk orders) or air (for urgent requirements)
• Low minimum order quantity—supports both trial runs and full production needs

Get Your Koyo 6334/6336/6338 Bearing Quote Today

Whether you need a single bearing or a full container, we can provide competitive pricing and fast delivery. Simply share the model number, required quantity, and destination, and our team will prepare a detailed quote within 24 hours. We also handle custom specifications—including OEM/ODM requirements—so you get bearings tailored to your exact application.

Frequently Asked Questions