Radial Ball Bearings

Radial Ball Bearings, sometimes called deep groove ball bearings, are the most popular type of high precision bearings. They are versatile, good for smaller spaces, and when axial loads move in both directions.

Radial bearings are usually chosen over angular contact bearings when:

• Bearing space is limited, therefore multiple pairs or sets of angular contact bearings won’t fit
• A machine or application operates at low to moderate speeds (RPM)
• Applications have axial loads that move in both directions

Features of Our Radial Ball Bearings

Radial Bearing Product Line

Manufactured to ISO 15 (DIN 625) Standards

• General purpose
• Ball Material: 52100 Bearing Steel or Ceramic (Silicon Nitride, Si₃N₄) 
• One-sided or double-sided shields available
• Extra-wide bearing sizes also available

Radial Bearing Materials

Bearing Ring Material

Our bearing rings are manufactured with vacuum degassed chrome steel 100Cr6 and come heat stabilized for temperatures up to 302°F (150°C).

On request, we can add heat stabilization for any working temperatures between 302°F to 572°F (150°C to 300°C).

Any radial bearings needed for working temperatures up to 932°F (500°C) are also available and are manufactured with high-temperature tool steel. Download our bearing catalog or contact us for more information.

Ball Material

Our steel balls are manufactured with vacuum degassed chrome steel 100Cr6 and our ceramic balls are manufactured with silicon nitride, Si₃N₄.

Download our bearing catalog or contact us for more information.

Bearing Precision Class

GMN manufactures precision bearings that adhere to the national and global standards for precision, ISO 492, and DIN 620. Our high precision bearings are also manufactured to ABEC 7, ABEC 9 standards with a designated precision class of 4+ (P4+) and 2 (P2).

Available Options for Our Radial Ball Bearings

We understand that some applications have different bearing requirements, and sometimes our “out-of-the-box” inventory won’t work. In these cases, we have customized choices for our radial ball bearings.

If you have unique bearing requirements, then let our team of technical experts help you build the best bearing for your application.

Radial Ball Bearing Selection Options:

• Cage Material: Phenolic Resin (standard) or Polyamide with Fiberglass (other options available)
• Ball Material: 52100 Bearing Steel or Ceramic (Silicon Nitride, Si₃N₄)
• Internal Clearance Options: C2, C3, C4
• Shields: Open, One Shield, Two Shields (lubricated)
• Extra-Wide Radial Bearing Available

If our radial ball bearing product line meets your needs, then request a quote for pricing and availability. 99% of our orders ship out the same day.

Machine Parts That Use Radial Ball Bearings

• Machine-Tool Spindles
• Electric Motors
• General Machinery like Compressors & Pumps
• Photocopiers
• Aircraft Generators (Hybrid)
• Biotechnology Equipment (Hybrid)
• High-Speed Mills (Hybrid)
• Precision Instruments (Hybrid)

Helpful Radial Bearing Resources

Still have questions? Below are a few articles we recommend you read next.

• Components of our Radial Ball Bearings
• Radial Ball Bearings vs Angular Contact Bearings
• Internal Clearances for Deep Groove Ball Bearings
• Everything You Need to Know About Radial Bearings

Make sure to browse our extensive library of articles, guides and calculators.

GMNs Bearing Standards At-A-Glance

All GMN high precision ball bearings meet the below criteria.

GMN Standards	ISO	DIN	AFBMA	Internal Tolerance Class
P4+	Class 4	P4	ABEC 7	High Precision (HG)
UP+	Class 2	P2	ABEC 9	Ultra Precision (UP)

Why Buy From GMN Bearing USA?

The success of our business comes from three main pillars of excellence:

1. Rapid Response: 99% of inquiries are responded to within one business day and most orders ship out the same day (from Houston, Texas).
2. Expert-Level Support: Our onsite mechanical engineers and technical support specialists provide answers to your most difficult questions.
3. Quality 360°: Our internal quality control process is one of the highest in the industry. We make sure GMN is synonymous with quality.

Need help finding the right product for your application? Contact us today.