Enduro Bearings Deep Groove Ball Bearing 61903 17 mm x 30 mm x 7 mm

Item number: 57528
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High-end product among steel bearings: the 61903 SRS ABEC 5 by Enduro Bearings


In order to meet the ABEC 5 standard, a bearing must meet extremely high requirements for the roundness of the balls, tolerances of the inner and outer diameters, alignment of the running surfaces and low noise.
ABEC 5 bearings from Enduro Bearings feature R64 hardened 5th degree chrome steel balls, making them suitable for high precision applications. They move in vacuum-formed treads made of 52100 carbon chrome steel, which are particularly resistant and durable. The nylon graphite ball bearing cages have virtually no friction, and ensure constant double-sided supply of Rheolube 374A grease.

Specifications:

Dimensions (Inner x Outer x Width):
17 mm x 30 mm x 7 mm
Designation:
61903

Models:

Type 1:
Design:
deep groove ball bearings
Tolerance:
ABEC 5
Recommended Use:
hubs
Inner Race Material:
steel (52100)
Outer Race Material:
steel (52100)
Ball Material:
steel
Seals:
SRS
Basic static load rating:
2.1 kN (477 lbs)
Manufacturer Number:
61903SRS

Features:

  • Level 5 in the rating of the Annular Bearing Engineer's Committee (ABEC) in terms of manufacturing tolerances and noise development
  • chrome steel balls 5th degree = roundness is 5/1,000,000"
  • treads made of carbon chrome steel alloy, heat- and cold-treated (down to -190° C), hardness min. Rockwell HRC 62, high gloss polish for precision and quietness
  • nylon graphite ball cage, grease supply on both sides
  • SRS: Snap Ring Seal type that can be safely removed for quick and easy maintenance, simple sealing lip on a step milled into the inner tread, extremely low running resistance, effective barrier against dirt and water
  • bearing clearance: C3

Contents:

  • 1 x Enduro Bearings 61903 17 mm x 30 mm x 7 mm ball bearing

Weight:

  • universal/type 1: 15,9 g

Models:

  • universal/type 1, out of stock
    11.24€

Customer Reviews (1)

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Customer Reviews (1)

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by Jörg G.  on 09.06.2022
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Leider halten sie den Ruf ihrer Vorschuss Lorbeeren nicht ein. Genau wie die Cube Lager nach 4 Monaten Schrott. Trotz Pflege nichts Bikepark. Ganz normales Radfahren im Wald. Habe dann hochwertige (Preisgleiche) Industrielager eingesetzt und machen ihr Ding.

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