NSK22212CDE4C3Double-Row Spherical Roller Bearing – Straight Bore, 60 mm ID, 110 mm OD, 28 mm Width, Open, E4 Lubrication Groove, Pressed Steel Cage, C3 Clearance

Product Description

What this part is

NSK 22212CDE4C3 double-row spherical roller bearing, 222 series, 60 mm bore x 110 mm outside diameter x 28 mm width. Bore: 60 mm. Outside Diameter: 110 mm. Overall Width: 28 mm. Bore Type: Straight, cylindrical. Number Of Rows: 2. Rolling Elements: Spherical rollers. Closure Type: Open. Cage Material: Pressed steel. Cage Type: Pressed. Internal Clearance: C3, larger than CN. Precision Class: ABEC 1, ISO normal. Permissible Misalignment: 1.5°. Relubrication Feature: E4, a lubricating groove in the outer ring outside surface with radial holes through the ring. Design Units: Metric. Material: Chrome steel. Country of Origin: Japan.

Decoding the designation

222: the double-row spherical roller series. 12: the bore code, giving 60 mm. CD: NSK’s high-capacity internal design with a pressed steel cage. E4: a lubricating groove in the outer ring outside surface with holes through the ring, NSK’s equivalent of the W33 feature. C3: radial internal clearance greater than the normal CN class. No K appears in the designation, so the bore is straight and cylindrical. Searchable variants: 22212-CD-E4-C3, 22212 CD E4 C3, 22212 CD E4/W33 C3, 22212-C-W33-C3, 22212CJW33C3.

What these specs mean in practice

Two rows of barrel-shaped rollers run in a common spherical outer raceway, so the inner ring, rollers and cage swivel as an assembly relative to the outer ring. That gives 1.5° of permissible misalignment and makes the bearing tolerant of shaft deflection and housing bore misalignment. Because both rows are angled, a double-row spherical roller bearing carries thrust in either direction as well as heavy radial load. NSK’s CD internal design is one of its high-load-capacity spherical executions and runs a pressed steel cage. The E4 groove distributes lubricant circumferentially around the outer ring and its radial holes carry it inward to the rolling elements; the same passages take grease or oil, so the feature suits a grease gun, a single-point lubricator or a circulating-oil system equally. Internal Clearance: C3, which leaves more room than the normal class once mounted, and suits a tight shaft interference fit or a running temperature that expands the inner ring more than the outer. Lubricant: grease or oil.

Quantity and configuration

Unit Quantity: 1 Pc. Straight-bore execution, which mounts directly on a cylindrical shaft seat.

Fitting notes

Chamfer Dimension: 1.5 mm minimum. Diameter of Shaft Abutment: 69 mm to 72 mm. Diameter of Housing Abutment: 98 mm to 101 mm. Maximum Shaft or Housing Fillet Radius: 1.5 mm.

Interchange guidance

Same-envelope designations at the same clearance class: SKF 22212 E/C3, FAG 22212-E1-XL-C3, Timken 22212EJW33C3, Koyo 22212RHRW33C3. Related part in the same series: the 22212CDKE4C3, which shares the 60 x 110 x 28 mm envelope with a 1:12 tapered bore and mounts on an H312 adapter sleeve.