Changzhou Mouette Machinery Co.,Ltd
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Crossed Taper roller bearings(XR, JXR series)
Croosed Taper Roller Bearings are variation of Crossed Cylindrical Roller Bearings, the taper rollers are arranged crosswise, with each roller perpendicular to the adjacent roller, the intersection point of the extending lines of the rolling surface should lie in the slewing line of the bearing.
Bearing features:
1. High precision: precision at P4, P2.
2. High rigidity: these series bearings are with preload.
3. High load capacity: can support radial load, axial load, and tilting load.
4. High speed: rollers do pure rolling, so the limited speed of crossed taper roller bearings is higher than that of crossed cylindrical roller bearings.
5. Low friction: the frictional torque of crossed taper roller bearings is much lower than that of crossed cylindrical roller bearings.
Application:
Crossed taper roller bearings can be widely applied in high speed vertical lathe, high precision working table, vertical boring machine, and main axis of grinding machine etc.
Example:
Technical Parameters:
| bearing type | Dimension | Basic dynamic load rating N | coefficient | ||||
| mm | K | ||||||
| d | D | T | R | double-row (radial) | Thrust | ||
| XR496051 | 203.2 | 279.4 | 31.75 | 1.5 | 51300 | 61600 | 0.48 |
| JXR637050 | 300 | 400 | 37 | 1.5 | 63000 | 80100 | 0.45 |
| JXR652050 | 310 | 425 | 45 | 2.5 | 82200 | 102000 | 0.46 |
| XR678052 | 330.2 | 457.2 | 63.5 | 3.3 | 100000 | 123000 | 0.47 |
| JXR699050 | 370 | 495 | 50 | 3 | 93600 | 119000 | 0.45 |
| XR766051 | 457.2 | 609.6 | 63.5 | 3.3 | 141000 | 178000 | 0.45 |
| XR820060 | 580 | 760 | 80 | 6.4 | 240000 | 299000 | 0.46 |
| XR855053 | 685.8 | 914.4 | 79.375 | 3.3 | 270000 | 344000 | 0.45 |
| XR882055 | 901.7 | 1117.6 | 82.55 | 3.3 | 300000 | 396000 | 0.44 |
| XR889058 | 1028.7 | 1327.15 | 114.3 | 3.3 | 405000 | 534000 | 0.44 |
| XR897051 | 1549.4 | 1828.8 | 101.6 | 3.3 | 518000 | 699000 | 0.43 |
Remarks:
In order to make it easy for calculation, the load rating noted in the above file is based on working 3000h at the speed of 500r/m, i.e. L10 life. While the limited bearing speed is depended on bearing dimension and the real load, and the speed is possible to be under 500r/m.