KoyoDouble Row Spherical Roller Bearing 90x160x40 mm Brass Cage C3 Clearance Self-Aligning

Product Description

What this part is

A Koyo 22218RC3 double-row spherical roller bearing with a 90 mm straight bore, a 160 mm outside diameter and a 40 mm width. It has asymmetric rollers, a machined brass cage and C3 internal clearance.

Decoding the designation

222: double-row spherical roller series, 22200 dimension series. 18: bore code 18, 90 mm bore, 160 mm OD, 40 mm width. R: asymmetric rollers with a machined brass cage in the Koyo scheme. C3: greater than normal radial internal clearance. FY: Koyo factory execution code, retained as a search term. No K suffix: straight cylindrical bore.

What these specs mean in practice

Two rows of barrel rollers running on a common spherical outer raceway let the inner ring and rollers swivel as one, so the bearing takes shaft misalignment and housing deflection in its stride while carrying very high radial load. Because the two rows sit at opposing angles, it also carries thrust in both directions. Koyo’s asymmetric roller profile places more roller length against the loaded raceway, raising dynamic capacity over a symmetric design of the same size, and the machined brass cage handles the resulting loads and higher speeds better than a pressed steel cage while tolerating shock. C3 clearance leaves room for thermal growth and for clearance lost to an interference fit, which keeps a hot or tightly fitted bearing from running pinched.

Published specifications

Bore: 90 mm (3.5433 in), straight cylindrical. Outside diameter: 160 mm (6.2992 in). Width: 40 mm (1.5748 in). Number of rows: 2. Rolling elements: asymmetric spherical rollers. Cage material: machined brass. Internal clearance: C3. Self-aligning: yes. Axial load: carried in both directions. Closure: open.

What ships in the box

One bearing. No adapter sleeve, lock nut, seals or housing are included, and the straight bore requires none.

Quantity and configuration

Supplied as 1 Pc.

Interchange guidance

Genuine equivalents are straight-bore double-row spherical roller bearings in the same 90x160x40 mm envelope with C3 clearance and a machined brass cage: SKF 22218 CC/C3 and 22218 CAM/C3, FAG 22218-E1-XL-C3, NSK 22218CAMC3 and Nachi 22218EC3. The tapered-bore 22218 K is a related size rather than an interchange, because it needs an adapter sleeve or a tapered journal. A single-row 20218 barrel roller shares the shaft size but carries no thrust, so it is a different part.