# Choosing a Stainless Ball Caster: Why KSM22FL Is Not KSM35FL

Ball transfer families share a naming pattern, which is why a buyer sometimes receives a 35 mm-class unit when the table was drilled for a smaller flange. KSM22FL uses a 22.23 mm main ball, 36 mm housing, and 31 mm height with an M10 stud.

KSM35FL, KSM45FL, and KSM60FL are different envelopes and will not drop into the same hole pattern or sit at the same pass line. If the existing unit is worn, measure ball diameter, housing OD, and height instead of trusting a faded stamp.

The KSM22FL bearing listing keeps this size isolated so the order stays on the 22.23 × 36 × 31 mm unit. TFL Bearing can confirm thread length and stainless material when you send the table drawing.