NSK22216EAKE4Spherical Roller Bearing – 1:12 Tapered Bore, 80 mm ID, 140 mm OD, 33 mm Width, Open, CN Clearance, E4 Lubrication Groove

Product Description

What this part is

NSK 22216EAKE4 double-row spherical roller bearing. Bore: 80 mm. Outside diameter: 140 mm. Width: 33 mm. Series: 222, ISO dimension series 22216. Bore form: 1:12 tapered. Cage: pressed steel. Closure: open both faces.

Decoding the designation

EA: high-capacity internal design with a pressed steel cage. K: 1:12 tapered bore. E4: annular groove in the outer ring with three radial lubrication holes, equivalent to the W33 feature. Searchable forms of the number include 22216EAKE4, 22216 EA K E4, 22216EAK and 22216K.

What these specs mean in practice

Basic dynamic load rating: 212 kN. Basic static load rating: 275 kN. Limiting speed: 3,200 rpm on grease, 4,000 rpm on oil. Two rows of barrel rollers run on a common spherical outer raceway, so the bearing carries heavy radial load with thrust in both directions and self-aligns to shaft deflection and housing misalignment. On a double-row spherical roller the static rating sitting above the dynamic rating is the normal catalogue relationship.

Lubrication provision

The E4 outer ring carries a circumferential groove and three radial holes, so grease or oil is fed directly to the rolling elements through the housing. That supports scheduled relubrication in service without dismounting.

Quantity and configuration

One bearing. Internal clearance: CN, the standard radial clearance class.

Fitting notes

The 1:12 tapered bore mounts on an adapter sleeve: the matching sleeve is an H316, which seats this 80 mm bore on a 70 mm shaft and is secured with a locknut and lock washer. Drive-up on the sleeve taper sets the mounted radial clearance.

Interchange guidance

Same-specification equivalents: SKF 22216 EK, FAG 22216-E1-XL-K, Timken 22216KEJW33C3 (related clearance). A straight-bore 22216EAE4 shares the 80 x 140 x 33 mm envelope and is a related size rather than an interchange, because it mounts directly on the shaft instead of on a sleeve.