... 2. prompt delivery, low noise, long life 3. EMQ ball bearings We Beijing Touchsky International Trade Co., Ltd. hold a vast ... low noise motors.All bearings are carefully cleaned and 100% QC checked and sorted according to ABEC, noise and vibration standards. Touchsky pays ... type, grease fill, fit, ball selection, shield / seal type, etc. A wide variety of sizes and types are available. Linda ...