This S71911CDGA/P4A bearing is a Super Precision angular contact bearing with 2 rubber seals, a 15° contact angle and a high-capacity design. This bearing is a universal fit single bearing with a light preload and a P4 precision rating. The bearing's dimensions are 55x80x13. Often used in Machine Tools, or other precision applications, these bearings are known for their high-speed capabilities, robust seals, and superior accuracy.