The BTR series is a high-speed thrust angular contact ball spindle bearing with a contact angle of 40 °. It is a non separable back-to-back pairing and has higher rigidity than the BAR series (30 °). It is suitable for high rigidity, bi-directional axial load, and high-speed low heat precision spindle scenarios. It can be interchanged with the 2344 series and is often used in combination with cylindrical roller bearings.
| Model | Basic Dimensions | Basic rated dynamic load | Weight | Type | |||
|---|---|---|---|---|---|---|---|
| Inner diameter | Outer diameter | Thickness | Dynamic load | Static load | |||
| [mm] | [mm] | [mm] | (kN) | (kN) | （kg） | ||
| 170BTR19STDBLP4 | 170 | 230 | 54 | 99.5 | 298 | 3.05 | BTR series spindle bearings |
| 180BTR19STDBLP4 | 180 | 250 | 63 | 150 | 445 | 4.78 | BTR series spindle bearings |
| 190BTR19STDBLP4 | 190 | 260 | 63 | 153 | 470 | 5 | BTR series spindle bearings |
| 200BTR19STDBLP4 | 200 | 280 | 72 | 180 | 555 | 7 | BTR series spindle bearings |
| 220BTR19STDBLP4 | 220 | 300 | 72 | 185 | 595 | 7.6 | BTR series spindle bearings |
| 240BTR19STDBLP4 | 240 | 320 | 72 | 190 | 635 | 8.15 | BTR series spindle bearings |
| 260BTR19STDBLP4 | 260 | 360 | 90 | 250 | 830 | 14.3 | BTR series spindle bearings |
| 280BTR19STDBLP4 | 280 | 380 | 90 | 257 | 885 | 15.2 | BTR series spindle bearings |
| 300BTR19STDBLP4 | 300 | 420 | 108 | 325 | 1130 | 23.5 | BTR series spindle bearings |
| 320BTR19STDBLP4 | 320 | 440 | 108 | 330 | 1180 | 24.8 | BTR series spindle bearings |
