FZ Ball Retainer This is copper or aluminum or plastice based material, on which therollers are arranged oderly in certain angle and intervals.

• 该产品用钢球滚动原理，配上铜基、铝基或树脂为保持架，按一定的角度和密度有序地排列。采用最新沟槽圆周锁珠工艺，防止钢珠脱落。