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Enduro Bearings 61801 滚珠轴承 61801 SRS ABEC 5 12x21x5mm

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Enduro Bearings 61801 滚珠轴承 61801 SRS ABEC 5 12x21x5mm 8,32€ 87920168
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Enduro Bearings 61801 bearing

Highlights

  • Bearing-No.: 61801
  • Measures: 10x19x7mm (inner diameter x outer diameter x width)

Technologies

ABEC 5
ABEC ratings (Annular Bearing Engineer’s Committee) are standards to which each bearing must pass many tests in order to meet the scheduled requirements including noise testing at high RPM, extremely tight tolerances for the internal diameter, outer diameter, roundness of ball, trueness of races, and surface finish for all of the above. Some aspects of ABEC ratings are important for bicycle bearings, but not all. In fact a high ABEC rated number for a bearing does not necessarily mean a high performance, long lasting bearing for your bicycle. For instance, you can have a high ABEC rated bearing that has a race groove only half as deep as ours because this feature is not covered by ABEC ratings. Since the groove would be shallower, there is less surface for the ball to roll on, and easier to pass the noise test. (Less surface contact = lower noise). However, the shallow groove of this bearing can yield less than half the support of our deeper groove design, and can be only half as strong; lasts half as long and becomes rough much sooner. Our deep groove ABEC 3 and ABEC 5 bearings offer the deepest grooves possible in every size, and are more difficult to pass the test due to the improved architecture of our bearings.

Scope of delivery

  • 1 x Enduro Bearings 61801 bearing 61801_SRS ABEC_5 10x19x7mm (see item description for details)
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