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

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