This spindle bearing is a single-row angular contact type with a 25° contact angle, bore diameter of 15.0 mm, outside diameter of 28.0 mm, and width of 7.0 mm, weighing 18.7 g net. It is fitted with a T cage and non-contact lip seals on both sides (2RSD), and is manufactured to restricted tolerances for precise, matched mounting in pairs or sets. Limiting speed is rated at 100,000 1/min. The restricted tolerances and matched-set design allow this bearing to be arranged in pairs to control axial preload accurately, while the non-contact double-lip sealing keeps friction and heat generation low, supporting the high limiting speed. Grease or oil lubrication compatible with high-speed operation should be selected in line with the sealing arrangement to maintain performance across the rated speed range.