Products
Miniature Deep Groove Ball Bearings
Product Overview
Miniature Deep Groove Ball Bearings are the most widely used miniature bearing type, offering compact dimensions, low friction, and stable high-speed rotation for small shafts and precision assemblies. They are commonly selected for small motors, fans, instruments, office equipment, power tools, robotics, and home appliance mechanisms where smooth running and reliable service life are required in limited installation space.
The deep groove raceway design supports radial loads and limited axial loads in both directions while maintaining quiet operation and efficient rotation. These bearings can be supplied in open, ZZ shielded, 2RS sealed, stainless steel, and low-noise grease versions according to speed, contamination protection, and assembly requirements.
ETM supports OEM projects with metric and application-specific sizes, precision grades, clearance options, lubrication choices, packaging, marking, and consistent batch supply for compact mechanical systems.
Technical Specifications
| Product Type | Miniature deep groove ball bearings |
| Common Series | MR, 60, 62, 68, 69 and application-specific miniature bearing series |
| Bore Size Range | Typically below 10mm, with custom miniature sizes available by request |
| Load Direction | Primarily radial load with limited axial load in both directions |
| Material Options | Chrome steel, stainless steel, ceramic ball options for selected applications |
| Shield and Seal Options | Open, ZZ metal shielded, 2RS rubber sealed, low-friction sealing options |
| Precision Grades | P0, P6, P5 or customized precision for low-noise and high-speed applications |
| Clearance Options | C0, C2, C3 and application-specific internal clearance |
| Lubrication | Low-noise grease, high-speed grease, food-grade or temperature-specific grease options |
| OEM Support | Size, tolerance, clearance, lubrication, seal type, noise grade, marking and packaging |
Key Features
- Compact design – suitable for small shafts, tight spaces, and lightweight precision assemblies.
- Low friction operation – supports smooth rotation, reduced heat generation, and stable performance at high speed.
- Quiet running options – low-noise grease and precision grades are available for office equipment, instruments, motors, and medical devices.
- Multiple shield and seal choices – open, ZZ, 2RS, stainless steel, and lubrication options can be matched to operating conditions.
- Reliable dimensional accuracy – miniature sizes can be supplied with consistent tolerance and clearance control for repeat assembly.
- OEM customization support – size, material, clearance, lubrication, tolerance, packaging, and marking can be matched to project needs.
Applications
Miniature Deep Groove Ball Bearings are used in compact rotating systems where small size, low friction, quiet operation, and reliable high-speed performance are required. Common applications include power tools, office equipment, medical equipment, robotics, and home appliances with limited installation space.
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.
FAQs
What are miniature deep groove ball bearings used for?
They are used in small motors, instruments, office equipment, medical devices, robotics, power tools, fans, model mechanisms, and compact precision assemblies that need low friction and stable rotation in limited space.
How do I select the right miniature deep groove bearing?
Selection should consider bore size, outside diameter, width, speed, load, clearance, seal or shield type, lubrication, noise grade, precision requirement, material, and the operating environment.
What seal or shield type should I choose?
Open bearings are used where external lubrication or very low friction is required. ZZ shields help block larger particles while keeping low torque. 2RS seals provide better contamination protection and grease retention for dusty or handled assemblies.
Can miniature deep groove bearings run at high speed?
Yes. Miniature deep groove ball bearings are suitable for high-speed rotation when the correct precision grade, clearance, cage, lubrication, and fit are selected for the application.
Which industries commonly use this bearing type?
Common industries include power tools, office equipment, medical equipment, robotics, home appliances, instruments, small motors, fans, and other compact mechanical systems.
Can ETM customize miniature deep groove ball bearings?
Yes. ETM can support OEM requirements including miniature size, clearance, precision grade, seal type, grease, noise level, material, marking, packaging, and stable batch supply.
Get a Fast Response from Our Team
Share your miniature deep groove ball bearing requirements or project details – our team will review your size, speed, load, clearance, seal type, lubrication, noise grade, packaging, and OEM supply needs and recommend suitable product options.
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