SNRDouble-Row Spherical Roller Bearing 85x150x36 mm Straight Bore C3 Clearance W33 Lube Groove

Product Description

What this part is

An SNR 22217VB33J30 double-row spherical roller bearing, 85 mm cylindrical bore by 150 mm outside diameter by 36 mm width. Two rows of barrel-shaped rollers run on a shared spherical outer raceway, so the bearing self-aligns while carrying very heavy radial load and axial load in both directions. It suits conveyor pulleys, fans, gearboxes, vibrating equipment, pumps and process machinery.

Decoding the designation

22217: double-row spherical roller bearing, 85 x 150 x 36 mm, 222-series section. V: SNR internal design designator. B33: the SNR code for the W33 feature, a lubrication groove around the outer ring plus three radial lubrication holes. J30: the SNR code for C3 radial internal clearance, one step above normal. Bore form: cylindrical, indicated by the absence of a K suffix.

What these specs mean in practice

The spherical outer raceway lets the inner ring and roller set swivel inside the outer ring, so a shaft running slightly out of line with its housing still loads the rollers evenly across their length. Long conveyor shafts and fabricated frames rarely hold better alignment than that, which is why this bearing type dominates there.

Two opposed roller rows carry axial load in both directions as well as radial load, so a separate thrust bearing is usually unnecessary in the arrangement.

C3 clearance leaves more room between rollers and raceways than the normal class. That room absorbs thermal growth of the inner ring and the interference of a tight shaft fit, so C3 is the standard choice where the shaft runs hotter than the housing or where the fit is press-on.

The B33 groove and holes let grease enter through the housing and reach the middle of the roller set directly, rather than being forced past a seal from one end. On a large slow bearing on a relubrication schedule, that keeps both roller rows evenly fed.

Published specifications

Bore: 85 mm, cylindrical. Outside diameter: 150 mm. Width: 36 mm. Rows: 2. Rolling elements: Barrel rollers on a spherical outer raceway. Radial internal clearance: C3 (SNR J30). Lubrication features: W33 / B33 groove and three outer-ring holes. Closure: Open. Alignment: Self-aligning. Axial load capacity: Both directions.

Quantity and configuration

1 Pc. The bore is cylindrical, so the bearing seats directly on a plain shaft. The purchase covers the bearing itself.

Interchange guidance

Cylindrical-bore 22217 spherical rollers at C3 clearance with W33 features: SKF 22217 E/C3, FAG 22217E1.C3, NSK 22217EAE4C3, Timken 22217EJW33C3, Koyo 22217RHRW33C3. The tapered-bore 22217VKB33J30 is a different part — it mounts on an H317 adapter sleeve rather than a plain shaft. Bearings of this envelope at normal or C4 clearance are a specification change rather than a like-for-like swap.