IMPORTER / DISTRIBUTOR OF EDEA & ROLL-LINE

1950 NW 11TH STREET, RICHMOND, IN 47374
765-935-7477

1950 NW 11TH STREET, RICHMOND, IN 47374 – CALL: 765-935-7477

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7mm
8 Balls
Metal / Open Covers

7mm
7 Balls
Plastic Covers

7mm
7 Balls
Open Covers

7mm
7 Balls
Metal / Open Covers

8mm
7 Balls
Plastic Covers

8mm
7 Balls
Plastic Covers

7mm
Metal
Spacers

ABEC RATING

The five distinct ABEC classifications that Roll-Line bearings come in are 1, 3, 5, 7, and 9. The higher rating signifies tighter tolerances, greater precision, higher efficiency, faster speed capabilities of the bearing, and a longer roll. The higher number ABEC bearings are also quieter than lower number bearings.

ABOUT BEARINGS Skates U.S.
ABOUT BEARINGS Skates U.S.

NUMBER OF BALLS

Roll-Line bearings come in a seven or eight ball configuration. Eight smaller balls allow the outer race to be thicker, letting the bearing take higher loads with less deformation.

COVERS AND CLEANING

The Roll-Line Speed Max bearings are a shielded bearing that will stay clean longer than bearings without a cover. The metal covers should not be removed during the cleaning process. The plastic cover of the Roll-Line Speed Race bearings may be removed for cleaning purposes. Roll-Line bearings with no covers (open cages) need to be cleaned more often than the shielded bearings.

ABOUT BEARINGS Skates U.S.
ABOUT BEARINGS Skates U.S.

Sizing

All standard Roll-Line Bearings are 7mm. The 7mm and 8mm size measurement is the bearings inside diameter (ID). The outside diameter (OD) of the 7mm and 8mm bearings is 22mm with a width of 7mm.

BEARING SPACERS

When the axle lock nut is tightened down on the wheel that has bearing spacers, it creates an axle size that is effectively increased from 7mm to approximately 11mm. The increasing of the axle size greatly reduces the possibility of bending or breaking any axle. By locking the bearings and spacer down, it also assures that the center race of each bearing is not spinning on the axle, but that the balls of the bearings are doing the actual work that they are intended to do. Tightening of the axle lock nut on a wheel without a spacer may compress the inner races towards the center of the wheel and cause misalignment.

ABOUT BEARINGS Skates U.S.