Koyo22212RHKW33C3Double-Row Spherical Roller Bearing – 1:12 Tapered Bore, 60 mm ID, 110 mm OD, 28 mm Width, Open, W33 Lubrication Groove, Pressed Steel Cage, C3 Clearance, H312 Sleeve Mount

Product Description

What this part is:

Koyo 22212RHKW33C3 is a double-row spherical roller bearing, 222 series, with a 1:12 tapered bore. Bore Diameter: 60 mm. Outside Diameter: 110 mm. Overall Width: 28 mm. Rolling Elements: Convex symmetric spherical rollers. Number Of Rows: 2. Closure Type: Open. Unit Quantity: 1 Pc.

Decoding the designation:

222 — double-row spherical roller series.

12 — bore code, giving a 60 mm bore.

RH — Koyo design with convex symmetric rollers and a pressed cage, with a centre guide ring in place of an inner-ring rib.

K — tapered inner-ring bore, 1:12 taper.

W33 — lubrication groove and lubrication holes on the outer ring outside surface.

C3 — radial internal clearance greater than standard.

Specifications:

Series: 222. Bore Type: Tapered 1:12. Cage Material: Pressed steel. Cage Type: Pressed. Internal Clearance: C3. Maximum Permissible Misalignment: 2°. Relubrication Feature: W33 groove and holes in the outer ring. Lubricant: grease or oil. Material: Chrome steel.

Dimensions and mounting:

Bore Diameter: 60 mm (2.3622 in). Outside Diameter: 110 mm (4.3307 in). Overall Width: 28 mm (1.1024 in). Mounts on an H312 adapter sleeve (55 mm cylindrical shaft seat, 60 mm tapered outside diameter) with a KM12 locknut and an MB12 lockwasher, or on a shaft journal machined to a 1:12 taper.

Compatibility and replacement:

Cross-references: Timken 22212KEJW33C3 and NSK 22212CDKE4C3, same envelope, taper and clearance with a lubrication groove; SKF 22212 EK/C3 and FAG 22212-E1-XL-K-C3, same envelope, taper and clearance without the lubrication groove. Related part: 22212RHW33C3, same 60 x 110 x 28 mm envelope with a straight cylindrical bore.

Frequently asked questions:

What are the dimensions of the Koyo 22212RHKW33C3?

The bearing has a 60 mm bore, a 110 mm outside diameter and a 28 mm width.

What does W33 mean on the Koyo 22212RHKW33C3?

W33 is a lubrication groove and lubrication holes on the outer ring outside surface.

Which adapter sleeve fits the Koyo 22212RHKW33C3?

The H312 adapter sleeve fits the 1:12 tapered bore, with a KM12 locknut and an MB12 lockwasher.