Welcome to The Bearing Shop

Site Last Updated: Thursday, February 28, 2008

Products - What Really Affects Skate Bearing Performance

Skate Bearings

What really does affect bearing performance?

RADIAL INTERNAL CLEARANCE

This is the distance that one ring can be moved relative to the other in the radial direction. This is measure in microns or thousandths of a millimetre. Bearings can be classified in several standard clearance ranges. For a 608 bearing these are:

C2 which is between 0 and 7 microns
normal which is between 8 and 13 microns
C3 which is between 8 and 23 microns

WHEEL & SPACER FITS

Ideally bearings would be tightly pressed into the wheel. Practically they can’t be. This means there will be some slippage which will lead to wear and reduced performance. The same philosophy can be applied to the inner ring spacers. In both cases follow your owners manual and replace components when they become worn.

CAGE TYPE (RETAINER OR SEPARATOR)

The cage keeps the balls of the bearing from bunching together on one side of the bearing. Cages are usually made of steel and plastic and for 608 bearings are assembled in two forms, welded and tab type. For a welded cage, the two cage halves are welded together between the balls to keep the halves from separating. For tab type cages the two halves are held together with tabs, which are placed between cage pockets on one cage half and fold over the opposite cage half.

Plastic cages are manufactured from a variety of materials including nylon, phenol and teflon etc. Most are reinforced with glass fibres which gives the plastic extra strength.

We are also able to to supply the much sought
CAGED CERAMIC BALL BEARINGS.

These bearings are capable of 14,000 revolutions per minute!

SEE OUR PAGES ON

"SKATE BEARINGS THE TRUTH"

"SKATE BEARINGS"

VIEW PRODUCT RANGE