BTW series spindle bearings

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）
BTW35CTDBLP4 35 62 34 16.8 39 0.35 BTW series spindle bearings
BTW40CTDBLP4 40 68 36 19.5 46.5 0.42 BTW series spindle bearings
BTW45CTDBLP4 45 75 38 22.1 54 0.53 BTW series spindle bearings
BTW50CTDBLP4 50 80 38 22.5 60 0.58 BTW series spindle bearings
BTW55CTDBLP4 55 90 44 30.2 80 0.87 BTW series spindle bearings
BTW60CTDBLP4 60 95 44 30.7 83 0.93 BTW series spindle bearings
BTW65CTDBLP4 65 100 44 31.9 90 1 BTW series spindle bearings
BTW70CTDBLP4 70 110 48 39 112 1.35 BTW series spindle bearings
BTW75CTDBLP4 75 115 48 39.7 116 1.45 BTW series spindle bearings
BTW80CTDBLP4 80 125 54 47.5 140 1.95 BTW series spindle bearings
BTW85CTDBLP4 85 130 54 48.8 146 2.05 BTW series spindle bearings
BTW90CTDBLP4 90 140 60 55.9 173 2.7 BTW series spindle bearings
BTW95CTDBLP4 95 145 60 57.2 180 2.8 BTW series spindle bearings
BTW100CTDBLP4 100 150 60 59.2 193 2.95 BTW series spindle bearings
BTW105CTDBLP4 105 160 66 85 265 3.92 BTW series spindle bearings
BTW110CTDBLP4 110 170 72 81.9 260 4.7 BTW series spindle bearings
BTW120CTDBLP4 120 180 72 85.2 280 5.05 BTW series spindle bearings
BTW130CTDBLP4 130 200 84 106 360 7.6 BTW series spindle bearings
BTW140CMDBLP4 140 210 84 106 375 8.6 BTW series spindle bearings
BTW150CMDBLP4 150 225 90 127 440 10.5 BTW series spindle bearings