Insulated Bearing Size
Classified By Brand
TFL Insulated Bearings Sizes
Introduce all size ranges of TFL insulated bearings, including deep groove ball bearings, cylindrical roller bearings, and tapered roller bearings.
SKF Insulated Bearings Sizes
Introduce all size ranges of SKF insulated bearings, including deep groove ball bearings and cylindrical roller bearings.
NTN MEGAOHM Series Insulated Bearing Sizes
Not sure which NTN MEGAOHM insulated bearing fits your motor? View clear size details by model to speed up selection and avoid mismatches.
NSK Ceramic-Coated Insulated Bearing Sizes
Not sure which NSK ceramic-coated bearing size you need? Access clear size data by model to select the right insulated bearing with confidence.
NKE Electrically Insulated Bearing Sizes
Unsure which FAG insulated bearing size fits your equipment? Explore clear model-by-model size data for fast and confident selection.
FAG Current-Insulating Bearing Sizes
Unsure which FAG insulated bearing size fits your equipment? Explore clear model-by-model size data for fast and confident selection.
Classified by Type
Electrically Insulated Deep Groove Ball Bearings
By Brand
- SKF Electrically Insulated Deep Groove Ball Bearings
- FAG Electrically Insulated Deep Groove Ball Bearings
- NSK Electrically Insulated Deep Groove Ball Bearings
- NKE Electrically Insulated Deep Groove Ball Bearings
- TFL Electrically Insulated Deep Groove Ball Bearings
- NTN Electrically Insulated Deep Groove Ball Bearings
By Series
Electrically Insulated Cylindrical Roller Bearings
Electrically Insulated Tapered Roller Bearings
Can't find the Type? Brand? model?
If you cannot locate the insulated bearing size you require, or need a custom bearing, we can provide tailored solutions to meet your specific needs.
TFL provides custom plasma spraying services for special dimensional requirements or higher voltage needs (DC > 1000V).
General FAQ
Find quick answers to common inquiries about our technology, product compatibility, and ordering process.
To identify a bearing size, you need to measure three key dimensions using a Vernier caliper:
- Inner Diameter (d): The bore size of the inner ring.
- Outer Diameter (D): The external diameter of the outer ring.
- Width (B): The thickness of the bearing.
Note: Do not measure over the corner radiuses (chamfers), as this will give an incorrect reading.
Dimensionally, they are identical. The difference lies in the application and mounting:
- Outer Ring Coating (e.g., VL0241 / J20AA): The most common type. Used when the outer ring is stationary in the housing.
- Inner Ring Coating (e.g., VL2071 / J20B): Used when the outer ring rotates, or for larger bearings where press-fitting the outer ring might damage the coating.
Contact us to select the correct type for your motor.
No, it does not.
Although the ceramic coating (typically Aluminum Oxide) adds a layer of approximately 100-200µm, our insulated bearings are manufactured to strictly adhere to ISO standard tolerances.
We achieve this by slightly grinding the base steel before coating (undercutting) or controlling the coating process within the tolerance zone. This ensures that our insulated bearings are 100% dimensionally interchangeable with standard non-insulated bearings and will fit your existing housings and shafts perfectly.
If you cannot find your specific dimensions in the standard charts (SKF, FAG, or ISO series), TFL Bearings offers custom plasma spraying services.
We can apply high-quality electrical insulation coatings to almost any bearing type or size, including non-standard and imperial (inch) sizes. Please click the "Custom Solution" to send us your drawing or dimensions for a quick quote.
