SKF20210-TN9Barrel Roller Bearing – 50 mm Bore, 90 mm OD, 20 mm Width, Polyamide Cage

Product Description

What this part is

SKF 20210 TN9 single-row barrel roller bearing. Bore Diameter: 50 mm. Outside Diameter: 90 mm. Overall Width: 20 mm. Number Of Rows: 1. Rolling Elements: Barrel Roller. Bore Type: Cylindrical. Cage Material: Polyamide. Bearing Material: Bearing steel. Series: 202. Base Number: 20210.

Decoding the designation

20210 places the bearing in the 202 barrel roller series with a 50 mm bore. TN9 is SKF’s glass-fibre reinforced polyamide 6,6 cage — a one-piece snap-type cage that adds very little mass to the rolling set, runs quietly and absorbs shock loading. The designation carries no K, so the bore is cylindrical.

What these specs mean in practice

A barrel roller bearing carries heavy radial load and aligns itself. The single row of convex rollers runs on a spherical outer raceway, so the inner ring, rollers and cage swivel relative to the outer ring and take up shaft deflection and housing misalignment. Internal Clearance: CN — no clearance suffix appears in the designation, so the bearing is supplied to normal radial internal clearance.

Quantity and configuration

Unit Quantity: 1 Pc. One bearing per sale unit, open on both faces.

Mounting data

The cylindrical bore seats directly on a plain shaft journal with an interference fit. The spherical outer raceway lets the bearing accept angular misalignment between shaft and housing after mounting.

Interchange guidance

20210 is the ISO-pattern number for this envelope and other makers build to it directly. Cross-Reference 1: FAG 20210-TVP, where TVP is Schaeffler’s glass-fibre polyamide cage code — the same cage material in a different scheme. Searchable forms of the number: 20210-TN9, 20210TN9, 20210 TN9.