NSK22216HKC3Spherical Roller Bearing – Tapered Bore, 80 mm ID, 140 mm OD, 33 mm Width, Open, C3 Internal clearance

Product Description

What this part is

NSK 22216HKC3 double-row spherical roller bearing. Bore: 80 mm. Outside diameter: 140 mm. Width: 33 mm. Series: 22200. Bore form: 1:12 tapered. Two rows of barrel-shaped rollers run on a common spherical outer raceway, so the bearing carries heavy radial load together with axial load in both directions and accommodates shaft deflection and housing misalignment up to 1.5°.

Decoding the designation

K: tapered bore, 1:12 taper. C3: internal radial clearance greater than normal. Cage Type: Pressed. Cage Material: Steel. Internal Clearance: C3. Precision Class: ABEC 1 / P0. Bore Type: Tapered 1:12. Country of origin on this item: Japan.

Published ratings

Dynamic Load Rating: 228 kN. Static Load Rating: 255 kN. Limiting Speed: 4,300 rpm. Maximum permissible misalignment: 1.5°. Item weight: 4.80 lb. On a double-row spherical roller bearing the static rating standing above the dynamic rating is the normal published relationship for the type.

What these specs mean in practice

A pressed steel cage keeps rotating mass and cost down and suits the moderate speeds this size runs at. C3 clearance leaves running clearance after the interference fit of a tapered-bore mounting and after thermal growth of the inner ring, which suits shafts that run warm. The 1.5° misalignment allowance covers shaft deflection under load and small errors between two housings on a long shaft.

Mounting on the tapered bore

The 1:12 tapered bore seats on an H316 adapter sleeve, which has a 70 mm shaft seat and an 80 mm tapered outside diameter matching this bore. The sleeve is secured with a KM16 locknut and an MB16 lockwasher. Driving the bearing further up the taper reduces radial internal clearance, and that is how final mounted clearance is set. The same taper also allows the bearing to be mounted at any position along a plain shaft.

Quantity and configuration

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

Interchange guidance

Same-envelope tapered-bore equivalents include SKF 22216 EK/C3, Timken 22216KCJW33C3 and Torrington 22216KVJW33C3. The plain 22216E is a related size on the same 80 x 140 x 33 mm envelope with a straight bore, so it mounts directly on a shaft seat instead of on a sleeve.