Roll-Line Carbon J ABEC 5 – 7mm Roller Skate Bearings

Bearings 3 product stars



Roll-Line Carbon J ABEC 5 – 7mm Roller Skate Bearings Summary

Roll-Line Carbon J ABEC 5 – 7mm Bearings 
Type:   Custom Roll-Line 
Axle Center Bore:    7mm = STCUPCR
Outside Diameter:    22mm (the same for all Roller Skate Bearings)
Number of Balls:    Precision 7 Ball
  Be sure you identify which size Axles you have and which
      size (7mm or 8mm) Bearings are needed.
Special Features:   Carbon Impregnated Ball Crown Cage Ring
ABEC Rating:   ABEC 5 
One (1) Set=   16 Bearings

Figure Dance FreeStyle
Derby Raiting Recreational Jam
Rhythm Quad Hockey Quad

The Roll-Line Carbon J ABEC 5 Bearings are specifically made for very High Level Competitive Roller Skating. The Carbon J Bearingsare Free Rolling with minimal Radial Play which promotes and very evenly distributes the load across the 7 balls for optimal Roll and a good amount of Axial Play or Thrust, which is the side movement of the inner race in relation to the outer race. This movement is very important because when Skaters push, we always put side load on the skate to get power in the push or stroke. If the Bearing does not allow for this, it will bind and LOOSE operating speed or ROLL. These provisions in the Race Curvature and Contact Angle allow the Roll-Line Carbon J Bearings to ROLL freely. 

The Roll-Line Carbon J ABEC 5 Bearings is ONLY available for Skates with 7mm Axles.

No matter what type or your level of Skating, GREAT Bearings can only help!

Customer Reviews1 review(s) posted (write review)

3 product stars
Decent bearing - Chit - 3/24/2012
I mounted these and noticed that two bearings had slight glitches when I spun them. Being new I figured that would spin out in use. I started using them and they had a fantastic glide to them, but they have a problem. Without side shields they get dirty quick and inside of 40 hours of use I fried the two bearing that had the bumps in the beginning. I think the concept of smaller bearing balls is great but I don't think standard material can stand up to the abuse. I've never disintegrated a fafnir or swiss bearing, or any ceramic bearing. Though I don't know whether to attribute it to the quality of the material or just incidental workmanship. The other 14 bearing are doing fine but I can't afford to spend 100.00 for just 40 hours of use. If those two had not failed I would have ordered another set already. Chit

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