Electrically Insulated Bearing 6326/C3VL2071 is Deep Groove Ball Bearing design. its dimension is 130×280×58mm, it has the same dimension and the same design with normal chrome steel 6326/C3 bearing. but the most different is 6326/C3VL0271 bearing with Aluminium Oxide Coating. the coating can Electrical Resistance Voltages up to 3000 V DC. This kind of bearing are widely used in high quality demand application like traction motor.
Electrically Deep Groove Ball bearings Electrically Deep Groove Ball bearings
Bearings with an electrically insulting coating provide enhanced protection against electric current damage. The enhanced protection results from the increased impedance due to the smaller coated surface area.
The basic coating is tested to withstand voltages of at least 1 000 V DC. Coating variants with the capability to withstand higher voltages can be supplied on request. The standard range of insulated bearings in the most frequently used sizes and variants are available from stock as:
-- Single Row Deep Groove Ball Bearings
-- Single Row Cylindrical Roller Bearings.
| Designation | Principal dimensions | Basic load ratings | Fatique load limit | Speed ratings | Weight |
| Deep groove ball bearing | mm | mm | mm | dynamic | static |
| Reference speed | Limiting speed | kg |
| d | D | B | C[kN] | C0[kN] |
| [r/min] | [r/min] |
| 6322/C3VL0241 | 110 | 240 | 50 | 216 | 180 | 5.7 | 6000 | 3800 | 9.7 |
| 6322 M/C3VL0241 | 110 | 240 | 50 | 216 | 180 | 5.7 | 6000 | 5300 | 11 |
| 6224/C3VL0241 | 120 | 215 | 40 | 153 | 118 | 3.9 | 6300 | 4000 | 5.3 |
| 6324/C3VL2071 | 120 | 260 | 55 | 216 | 186 | 5.7 | 5600 | 3400 | 12.7 |
| 6324 M/C3VL2071 | 120 | 260 | 55 | 216 | 186 | 5.7 | 5600 | 5000 | 15 |
| 6226/C3VL2071 | 130 | 230 | 40 | 163 | 132 | 4.15 | 5600 | 3600 | 5.8 |
| 6326/C3VL2071 | 130 | 280 | 58 | 242 | 216 | 6.3 | 5000 | 3200 | 15.5 |
| 6326 M/C3VL2071 | 130 | 280 | 58 | 242 | 216 | 6.3 | 5000 | 4500 | 16.5 |
| 6228/C3VL2071 | 140 | 250 | 42 | 174 | 150 | 4.55 | 5300 | 3400 | 7.5 |
| 6328/C3VL2071 | 140 | 300 | 62 | 265 | 245 | 7.1 | 4800 | 3000 | 18.7 |
| 6328 M/C3VL2071 | 140 | 300 | 62 | 265 | 245 | 7.1 | 4800 | 4300 | 21.8 |
| 6230/C3VL2071 | 150 | 270 | 45 | 186 | 166 | 4.9 | 5000 | 3200 | 10 |
| 6330/C3VL2071 | 150 | 320 | 65 | 286 | 285 | 7.8 | 4300 | 2800 | 23 |
| 6332 M/C3VL2071 | 160 | 340 | 68 | 291 | 285 | 7.65 | 4000 | 3800 | 31 |
| 6334 M/C3VL2071 | 170 | 360 | 72 | 332 | 340 | 8.8 | 3800 | 3400 | 35 |
| 6336 M/C3VL2071 | 180 | 380 | 75 | 371 | 405 | 10.4 | 3600 | 3200 | 41 |
Electrically Insulated Bearing are not only Electrically Insulated deep groove ball Bearing, but also Electrically Insulated Cylindrical Roller Bearing, Electrically Insulated Tapered Roller Bearing, Electrically Thrust Roller Bearing and the other type Normal or Non-Standard Electrically Insulated Rolling Bearings. they are the same dimension, same cage, same elements and the other data with normal chrome steel rolling bearing, just the different coating on the surface of the inner ring or outer ring of the Rolling Bearing.
Frequently used bearing types in VL0271 execution (insulation on the Inner ring) are available on stock or with short lead times. Examples:
> Cylindrical roller bearings
Design: NJ, NU, NUP
Dimension series: 210-230, 310-330
Cage: brass and polyamide
Radial clearance groups: C0, C3, C4
> Deep groove ball bearings
Dimension series: 6212-6226; 6312-6326
Cage: brass
Radial clearance groups: C3, C4
Advantages of electrically insulated bearings:
> Higher operational reliability through optimum protection against current passages
> More economical than insulation on housings or shafts
> Interchangeable: Same dimensions and technical properties as conventional bearings
> Coating resistant to mechanical damage if correctly handled
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