This spindle bearing carries a 15° contact angle and a bore of 100.0 mm, outside diameter of 140.0 mm, and width of 20.0 mm, weighing 0.78 kg net. It is built to restricted tolerances (P4S) with a T-type cage and is supplied unadjusted individually but matched for mounting in pairs or sets, corresponding to the C arrangement. The bearing has no sealing, so shielding and lubricant retention must be provided externally. The restricted tolerance class and defined contact angle allow this bearing to run at high rotational accuracy under combined axial and radial load, with stiffness governed by the pair or set arrangement chosen at mounting. Since no sealing is fitted, external protection and a suitable lubrication method (oil or grease) must be arranged by the user to maintain the running accuracy and control internal clearance over the operating range.