DWR Bearing Co., Ltd
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NTN Spherical Roller Bearing Double Row 21322 / 21322K With P5 / P6 Precision
Spherical roller bearings have barrel-shaped rollers between the inner ring, which has two raceways, and the outer ring which has one spherical raceway. Since the center of curvature of the outer ring raceway surface coincides with the bearing axis, they are self-aligning in a manner similar to that of self-aligning ball bearings. Therefore, if there is deflection of the shaft or housing or misalignment of their axes, it is automatically corrected so excessive force is not applied to the bearings.
Spherical roller bearings can take, not only heavy radial loads, but also some axial loads in either direction. They have excellent radial load-carrying capacity and are suitable for use where there are heavy or impact loads.
Types of Spherical Roller Bearings :
C: Stamped steel retainer and strengthened symmetric rollers for considerably higher load ratings;
CA: one piece brass retainer and strengthened symmetric rollers;
exchange with C design, especially for large size.
MB: Two-piece precision-machined brass retainer and strengthened symmetric rollers;
equivalent to C design in load capacity.
CC: steel cage, replace traditionalbrass cage.
E: Third generation design to improve stress distribution for much longer service life
TN: Nylon retainer.
Quick Detail:
advantages
1. Excellent and high quality control,high speed,low noise,long life
2. Prompt delivery
3. Competitive price
4. Small order accepted
5. Customers' drawing or samples accepted
6. OEM service
7. Professional:12 years manufactur
| Bearing No. | Boundary Dimensions (mm) | Basic Load Rating (KN) | Mass | |||||
| d | D | B | C | Co | kg | |||
| 21307 | 21307 K | 21307 W33 | 35 | 80 | 21 | 70.70 | 73.30 | 0.547 |
| 21308 | 21308 K | 21308 W33 | 40 | 90 | 23 | 87.60 | 92.00 | 0.751 |
| 21309 | 21309 K | 21309 W33 | 45 | 100 | 25 | 105.00 | 112.00 | 1.010 |
| 21310 | 21310 K | 21310 W33 | 50 | 110 | 27 | 121.00 | 129.00 | 1.300 |
| 21311 | 21311 K | 21311 W33 | 55 | 120 | 29 | 141.00 | 152.00 | 1.660 |
| 21312 | 21312 K | 21312 W33 | 60 | 130 | 31 | 165.00 | 175.00 | 1.990 |
| 21313 | 21313 K | 21313 W33 | 65 | 140 | 33 | 186.00 | 197.00 | 2.450 |
| 21314 | 21314 K | 21314 W33 | 70 | 150 | 35 | 206.00 | 223.00 | 2.980 |
| 21315 | 21315 K | 21315 W33 | 75 | 160 | 37 | 249.00 | 270.00 | 3.630 |
| 21316 | 21316 K | 21316 W33 | 80 | 170 | 39 | 272.00 | 306.00 | 4.290 |
| 21317 | 21317 K | 21317 W33 | 85 | 180 | 41 | 297.00 | 351.00 | 5.190 |
| 21318 | 21318 K | 21318 W33 | 90 | 190 | 43 | 320.00 | 387.00 | 6.090 |
| 21319 | 21319 K | 21319 W33 | 95 | 200 | 45 | 366.00 | 500.00 | 7.150 |
| 21320 | 21320 K | 21320 W33 | 100 | 215 | 47 | 397.00 | 546.00 | 8.810 |
| 21322 | 21322 K | 21322 W33 | 110 | 240 | 50 | 460.00 | 634.00 | 9.460 |