I would like to ask 6309 of the bearings, in the bearing seat plus a sealing ring, the customer to the sealing ring size of 55*5, this 55 refers to the outer diameter of the seal? There are 6307 bearings, the sealing ring size is 48*3, and this 48 is also outside diameter?
See what kind of sealing ring, some round gasket sample (outer diameter - width, X2= diameter), and some of the skeleton oil seal is marked with size
This is not necessarily, bearing and shaft alignment, no step, there are steps on both sides of the seal ring diameter is not the same.The sealing ring shall have the following properties:1) resilient and resilient.2) proper mechanical strength, including expansion strength, elongation and tear strength.3) stable performance, less swelling in medium, and little effect of thermal contraction (Joule effect).4) easy to process, and can maintain precise size.5) do not corrode the contact surface, do not pollute the medium and so on.
This is not necessarily, bearing and shaft alignment, no step, there are steps on both sides of the seal ring diameter is not the same.The sealing ring shall have the following properties:1) resilient and resilient.2) proper mechanical strength, including expansion strength, elongation and tear strength.3) stable performance, less swelling in medium, and little effect of thermal contraction (Joule effect).4) easy to process, and can maintain precise size.5) do not corrode the contact surface, do not pollute the medium and so on.
