There are many non standard bearings in deep groove ball bearings, with extended inner ring series is the most commonly used one. Standard 608's dimension is 8*22*7mm,Hongtai's 608-ZZ/B16 with extended inner ring on both side,the dimension is 8*22*16mm,and mainly used for casters,wheels,furniture parts etc. The extended inner ring reduces the cost and makes it more widely used. As the most classic 608 bearing, with extend inner ring is widely used on casters and wheels. We can produce 100,000 pcs per shift per month.
