Products
Deep Groove Ball Bearings
Product Overview
Deep Groove Ball Bearings are the most widely used type of rolling bearing, characterized by raceway grooves on both the inner and outer rings that are deep relative to the ball diameter. This structural design allows them to support both radial loads and moderate bidirectional axial loads simultaneously, making them suitable for a broad range of general-purpose and demanding industrial applications alike.
Available across multiple standardized series — including the 60, 62, 63, 68, 69, and MR series — Deep Groove Ball Bearings offer flexibility in load capacity, speed performance, and installation footprint, allowing engineers to select the optimal balance of size and performance for each specific application. Precision grades from P0 to P5 (and higher for select miniature/precision variants) are available to meet requirements ranging from standard industrial use to high-precision rotational systems.
Sealing and shielding options are equally comprehensive, including open type, single and double-sided metal shields (Z/ZZ), non-contact seals (RZ/2RZ), contact seals (RS/2RS), and mid-contact seals (RS1/2RS1), allowing selection based on dust protection, moisture resistance, and friction loss requirements across diverse operating environments.
Technical Specifications
| Series | 60, 62, 63, 64, 68, 69, MR Series |
| Bore Diameter Range | 3mm – 200mm |
| Outer Diameter Range | 10mm – 360mm |
| Width Range | 4mm – 75mm |
| Cage Material Options | Steel stamped, brass machined, polyamide PA66 |
| Seal / Shield Options | Open, ZZ metal shield, 2RS rubber seal, V non-contact |
| Precision Grades | P0 standard, P6, P5, P4 high precision |
| Radial Clearance | CN normal, C3, C4 increased |
| Material Standard | Gcr15 / 52100 chrome steel, stainless steel SS440 / SS420 |
| Temperature Range | -40 C to +150 C standard, up to +250 C high temperature |
| Lubrication | Grease standard, oil optional, dry for open bearings |
| Standards Met | ISO 9001, ISO/TS 16949, JIS, DIN |
Key Features
- Dual-direction load support — handles radial loads and moderate bidirectional axial loads without requiring additional dedicated thrust bearings
- Low friction, high-speed capability — suitable for applications ranging from low-speed heavy-duty operation to high-speed precision rotation
- Simple structure, easy maintenance — non-separable design allows quick installation and replacement without disassembling inner/outer rings
- Broad size range — bore sizes spanning from 2 mm (miniature MR series) to over 150 mm (62/63 series), covering virtually all mechanical scale requirements
- Compatible with grease and oil lubrication, supporting both sealed (maintenance-free) and open (re-lubricable) configurations
- Compliant with international standards, including ISO 15, DIN 625, and ABEC
Applications
Deep Groove Ball Bearings serve as the standard bearing solution across virtually every industry. In electric motors and generators, they provide stable radial and axial support across a wide range of power outputs. In pumps, compressors, and fans, they deliver reliable performance under continuous operating cycles.
In gearboxes and power transmission systems, deep groove ball bearings absorb the combined radial and axial loads generated by gear meshing across a wide range of shaft sizes. Conveyor and material handling equipment rely on their high load capacity and long service life under continuous duty cycles, while the automotive industry uses them extensively in alternators, water pumps, cooling fans, and auxiliary drive systems.
In precision and miniature applications — such as instrumentation, medical devices, optical equipment, and model/hobby drive systems — smaller series (68, 69, MR) provide compact, high-precision rotational support where installation space is severely constrained.
Beyond heavy industry, Deep Groove Ball Bearings are also found in HVAC equipment, textile machinery, packaging lines, household appliances, and consumer electronics, making them one of the most versatile and universally applied bearing types across both industrial and consumer-facing equipment.
Electric Tools
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Automotive
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Machine Tools
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Agriculture Machinery
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Food and Beverage
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Robotics
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Technical Resources
Whether you are an engineer, procurement manager, or equipment maintenance professional, here you will find in-depth content covering bearing operating principles, technical parameter interpretation, industry application analysis, and selection logic — helping you build a comprehensive understanding of bearing products and make more informed decisions in real-world applications.
Deep Groove Ball Bearings A Complete Guide to Structure, Working Principle, Selection, and Applications
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Bearing Seals and Shields: A Complete Guide to Z, ZZ, RS, RZ, RS1, and 2RS1 Types
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Select Bearing Metal Materials: Common Standards and Purchasing Guidelines Bearing Metal Materials: Common Standards and Purchasing Guidelines
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Selection Guide for Deep Groove Ball Bearing Clearance: C3 vs. C0 (CN)
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FAQs
What loads can deep groove ball bearings handle?
Deep groove ball bearings are primarily designed for radial loads, but they can also handle moderate axial (thrust) loads in both directions. They are not suitable for heavy axial loads or combined shock loads. In those cases, angular contact or tapered roller bearings are preferred.
How do I select the right bearing size for my application?
Selection should be based on bore diameter (shaft size), required load capacity (dynamic rating C and static rating C0), operating speed compared with the bearing limiting speed, available space (outer diameter and width), and required precision grade from P0 to P2. Always apply a safety factor and verify that the calculated L10 service life meets your requirements.
What is the difference between open, shielded (ZZ), and sealed (2RS) bearings?
Open: No built-in protection, requires external sealing, and is suitable for clean environments or oil bath lubrication.
ZZ metal shields: Protect against dust and debris with low friction, making them suitable for high-speed applications, but they are not waterproof.
2RS rubber seals: Provide strong protection against dust and moisture. They are pre-greased and ideal for contaminated environments, but generate slightly more friction.
How often should I lubricate or replace the grease?
For general industrial use, grease should be replenished or replaced every 3,000 to 10,000 operating hours depending on speed, temperature, and environmental conditions. Bearings running above 70 C or in contaminated environments require shorter intervals. Sealed 2RS bearings are pre-greased for life and do not require re-lubrication.
What are the common causes of premature bearing failure?
The most frequent causes include inadequate or improper lubrication, contamination by dirt, dust, or moisture, incorrect installation, misalignment, excessive force during fitting, overloading beyond the rated capacity, improper shaft or housing fits, and fatigue at the end of normal service life.
How is the rated service life (L10) of a bearing calculated?
The basic L10 life is calculated as L10 = (C / P)^3 x 10^6 revolutions, where C is the dynamic load rating in kN and P is the equivalent dynamic bearing load in kN. It represents the number of revolutions that 90% of identical bearings will complete without fatigue failure. In practice, ISO 281 modified life calculations also apply correction factors for lubrication, contamination, material, and reliability.
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