
Bearings Used in Electric Motors: An Engineer’s Selection Guide
Understanding which bearings are used in electric motors — and why — directly determines whether a motor delivers 40,000 hours of reliable operation or fails
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Founded in 1946, National Engineering Industries Ltd (NEI) is India’s leading bearings manufacturer and exporter, renowned for excellence in quality and delivery.
Bearings perform a variety of utilities that help to internally optimize the production functions. Which is why major factories and manufacturing industries have a steady demand for bearings. Self-aligning ball bearings are made for special cases where the shaft and housing of the ball bearings are misaligned, which might be static or dynamic misalignment. The elements of the bearing will ensure low friction while helping the bearings operate at higher speeds for reduced heat generation.
| Products | Boundry Dimensions | Basic Load Ratings | Limiting Speed | Mass Kg | |||||
|---|---|---|---|---|---|---|---|---|---|
| Dynamic | Static | Grease | Oil | ||||||
| d [mm] | D [mm] | B [mm] | C [kn] | Co [kn] | [r/min] | [r/min] | |||
| 2310K | 50 | 110 | 40 | 64.5 | 19.8 | 5000 | 63000 | 1.6 | |
| 1211 | 55 | 100 | 21 | 26.8 | 10 | 5300 | 6200 | 0.703 | |
| 2211K | 55 | 100 | 25 | 26.7 | 9.9 | 6000 | 7011 | 0.75 | |
| 2311K | 55 | 120 | 43 | 76.5 | 19.8 | 4800 | 6000 | 2.1 | |
| 2311 | 55 | 120 | 43 | 76.6 | 23.9 | 4800 | 6000 | 2.1 | |
| 1212 | 60 | 110 | 22 | 30.5 | 11.5 | 5300 | 6300 | 0.82 | |
| 1212K | 60 | 110 | 22 | 30.5 | 11.5 | 5300 | 6300 | 0.82 | |
| 1213K | 65 | 120 | 23 | 30.9 | 12.5 | 4800 | 6000 | 0.92 | |
| 2313 | 65 | 140 | 48 | 96.6 | 32.5 | 3800 | 38000 | 3.2 | |
| 2313K | 65 | 140 | 48 | 96.6 | 32.5 | 3800 | 38000 | 3.2 | |
| 2314 | 70 | 150 | 51 | 110 | 37.5 | 3600 | 45000 | 3.9 | |
| 1215 | 75 | 130 | 25 | 38.7 | 16 | 3900 | 4600 | 1.46 | |
| 2215K | 75 | 130 | 31 | 44.2 | 18 | 4300 | 5300 | 1.72 | |
| 1216K | 80 | 140 | 26 | 39.7 | 17.1 | 4000 | 5000 | 1.7 | |
| 2316 | 80 | 170 | S8 | 137 | 48.5 | 3200 | 4000 | 6.3 | |
| 1217K | 85 | 150 | 28 | 44.8 | 20.5 | 3800 | 4500 | 2.095 | |
| 2317 | 85 | 180 | 60 | 140 | 53.4 | 3000 | 3800 | 7.3 | |
| 1220K | 100 | 180 | 34 | 69.3 | 29.9 | 3200 | 3800 | 3.8 | |
| 1205K | 20 | 52 | 15 | 12.1 | 3.3 | 11000 | 13000 | 0.25 | |
| 1206K | 25.4 | 62 | 16 | 15.6 | 4.65 | 9200 | 11000 | 0.347 | |
| 1208K | 31.75 | 80 | 18 | 19.7 | 6.55 | 7100 | 8400 | 0.68 | |
| 1209K | 38.1 | 85 | 19 | 21.9 | 7.35 | 6400 | 7500 | 0.753 | |
| 1211K | 50.8 | 100 | 21 | 26.8 | 10 | 5300 | 6200 | 1.08 | |
| 1215K | 63.5 | 130 | 25 | 38.7 | 16 | 3946 | 1632 | 2.354 | |
| ULS12V | 31.75 | 69.85 | 17.46 | 19.15 | 5.75 | 10700 | 14500 | 0.324 | |
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