The BTW series is an ultra precision 60 ° contact angle bi-directional thrust angular contact ball spindle bearing with a separated back-to-back pairing and multi ball design. It focuses on the highest axial load and system rigidity, and is suitable for shaft diameters of 35-200mm. It is often combined with NN30/K series cylindrical roller bearings for heavy-duty precision machine tool spindles.
| Model | Basic Dimensions | Basic rated dynamic load | Weight | Type | |||
|---|---|---|---|---|---|---|---|
| Inner diameter | Outer diameter | Thickness | Dynamic load | Static load | |||
| [mm] | [mm] | [mm] | (kN) | (kN) | （kg） | ||
| BTW160CMDBLP4 | 160 | 240 | 96 | 140 | 510 | 13 | BTW series spindle bearings |
| BTW170CMDBLP4 | 170 | 260 | 108 | 174 | 610 | 17.5 | BTW series spindle bearings |
| BTW180CMDBLP4 | 180 | 280 | 120 | 199 | 710 | 23 | BTW series spindle bearings |
| BTW190CMDBLP4 | 190 | 290 | 120 | 203 | 735 | 24 | BTW series spindle bearings |
| BTW200CMDBLP4 | 200 | 310 | 132 | 238 | 865 | 31 | BTW series spindle bearings |
| BTW100FTDBLP4 | 100 | 140 | 48 | 51.5 | 171 | 1.83 | BTW series spindle bearings |
| BTW110FTDBLP4 | 110 | 150 | 48 | 53 | 187 | 1.99 | BTW series spindle bearings |
| BTW120FTDBLP4 | 120 | 165 | 54 | 62 | 223 | 2.78 | BTW series spindle bearings |
| BTW130FTDBLP4 | 130 | 180 | 60 | 74.5 | 276 | 3.78 | BTW series spindle bearings |
