61801-LLB ABEC5 Enduro Bike Bearing 12x21x5

61801-LLB ABEC5 Enduro Bike Bearing 12x21x5
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Brand:  Enduro
Measurement Unit:  Metric
Inside Diameter:  12.00mm
Outside Diameter:  21.00mm
Width:  5.00mm
Seals or Shields:  Rubber Seals
Clearance:  Standard

Availability:  

In stock  

Our Price:  £7.29(Exc. 20% VAT)(£8.75 Inc. VAT)
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Enduro


61801-LLB ABEC5 Enduro Bike Bearing 12x21x5

Enduro ABEC-5 Specification:

Grade 5 Chromium Steel Balls
High precision 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
Vacuum de-gassed process for the purest chromium alloy steel, hardened to R-62, extremely tough and very durable. Polished to a mirror finish for ABEC-5 precision and noiseless movement.

Graphite/Nylon Ball Retainers
Nylon with graphite retainers are virtually frictionless while providing constant lubrication.

The ABEC-5 Standard
To meet the ABEC-5 standard, bearing design must pass all tests, which include noise testing at high RPM, extremely close tolerances for I.D. and O.D., roundness of ball, trueness of the races and micro surface finishes of balls and races.

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