Products
Insulated Deep Groove Ball Bearings
Product Overview
Insulated Deep Groove Ball Bearings combine the low-friction, high-speed performance of standard deep groove ball bearings with electrical insulation that helps stop stray current from passing through the raceways. They are widely used in motors, fans, pumps, compressors, home appliances, power tools, and drive systems where shaft voltage can cause fluting, pitting, increased noise, or lubricant breakdown.
The design keeps compact boundary dimensions and smooth rotation while adding protection against electrical erosion. Insulation can be applied through coated rings or other application-specific electrical protection methods, allowing OEMs and maintenance teams to improve bearing life without changing the surrounding bearing arrangement.
ETM can support different bore sizes, clearance options, cage materials, lubrication, sealing structures, noise grades, and packaging requirements according to motor speed, installation fit, temperature, and reliability targets.
Technical Specifications
| Product Type | Insulated deep groove ball bearings |
| Common Series | 60, 62, 63, 68, 69 and application-specific motor bearing series |
| Insulation Method | Ceramic-coated ring insulation or customized electrical protection design |
| Load Direction | Primarily radial load with limited axial load in both directions |
| Typical Applications | Electric motors, fans, pumps, power tools, home appliances, automotive auxiliary systems |
| Material Options | Chrome steel rings, ceramic insulation coating, steel or polyamide cage options |
| Precision Grades | P0, P6, P5 or customized precision according to motor and noise requirements |
| Clearance Options | C0, C3, C4 and application-specific internal clearance |
| Sealing Options | Open, ZZ, 2RS, low-friction seals, low-noise grease options |
| OEM Support | Size, clearance, lubrication, insulation level, marking, packaging and quality documentation |
Key Features
- Electrical erosion protection – helps reduce current passage through the bearing and lowers the risk of fluting, pitting, arc marks, and early noise increase.
- Low-friction rotation – deep groove geometry supports smooth operation, high speed, and stable running in compact motor assemblies.
- Compact replacement design – many options can match standard deep groove bearing boundary dimensions for OEM production and maintenance replacement.
- Noise and vibration control – suitable for motors, fans, appliances, and precision rotating systems where quiet operation matters.
- Flexible sealing and lubrication – open, shielded, sealed, low-noise grease, and temperature-specific lubrication options can be selected.
- OEM customization support – size, clearance, insulation level, cage, grease, marking, packaging, and inspection standards can be matched to project needs.
Applications
Insulated Deep Groove Ball Bearings are suitable for compact rotating systems that need smooth speed performance and protection against electrical current damage. They are especially useful in small and medium motors, power tools, home appliance motors, and automotive auxiliary drive systems where reliability, low noise, and maintenance reduction are important.
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 insulated deep groove ball bearings used for?
They are used in motors, fans, pumps, compressors, power tools, home appliances, and other compact rotating equipment where stray electrical current may pass through the bearing and damage raceways or lubricant.
How do I select the right insulated deep groove ball bearing?
Selection should consider bore size, bearing series, load, speed, internal clearance, fit, sealing structure, lubrication, operating temperature, noise requirement, and the expected level of electrical current exposure.
What causes electrical damage in deep groove ball bearings?
Electrical damage is usually caused by shaft voltage, circulating current, or high-frequency discharge from inverter-driven motors. This can create fluting, pitting, arc marks, lubricant degradation, and higher vibration or noise.
Can insulated deep groove bearings replace standard bearings?
Yes. Many insulated deep groove ball bearings are designed with standard boundary dimensions, making them suitable for motor upgrades or maintenance replacement. Fit, clearance, speed, and load rating should still be checked.
Which applications commonly use this bearing type?
Typical applications include industrial motors, power tools, appliance motors, pumps, fans, automotive auxiliary systems, and compact drive units that require low friction, low noise, and improved protection against electrical erosion.
Can ETM customize insulated deep groove ball bearings?
Yes. ETM can support OEM requirements including size, clearance, insulation level, seal type, cage, grease, noise grade, marking, packaging, and application-based recommendations.
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