Miniature and the instrument divides into two basic types with the ball bearing: The deep ditch ball bearing contacts the ball bearing with the angle. The deep ditch ball bearing can be further divided into five kinds of following types according to designing in detail: Normal form, flange outer lane type, two radials inside and outside expansion type, it that the radial thickness of wide inner circle type, outer lane or inner circle is with much larger more width than the ordinary bearing are very thin
Ditch ball bearing can also divide form according to seal or not dustproofing for ” The style of opening ” , ” dustproof lid type ” And ” sealing type. ”
