Enduro 17287 ABEC-5 Sealed Bearing
Enduro 17287 ABEC-5 Sealed Bearing.
- Dimensions: OD: 28mm / ID: 17mm / Width: 7mm
- Enduro Part # BB MR 17287 LLB A5
- Sold individually
- OD: 28mm
- ID: 17mm
- Width: 7mm
- Seals: LLB Type, Silicone
Extremely tough and very durable steel bearing with a little boost in performance over ABEC-3 bearings.
Grade 5 chromium steel balls are within 5/1,000,000″ round. These are military level specification, used for precision equipment. R-64 hardness, of the highest grade. 52100 high carbon chromium alloy races go through a vacuum de-gassing process resulting in the purest chromium alloy steel, hardened to R-62. Nylon with graphite retainers are virtually frictionless while providing constant lubrication.