SKF22216KMW33Spherical Roller Bearing – 80 mm Tapered Bore, 140 mm OD, 33 mm Width, Machined Brass Cage, W33 Groove

Product Description

What this part is

SKF 22216 K/M/W33 double-row spherical roller bearing, tapered bore, machined brass cage. Bore / Shaft Size: 80 mm. Outside Diameter: 140 mm. Overall Width: 33 mm. Bore Type: tapered 1:12. Number Of Rows: 2. Rolling Elements: spherical rollers. Cage Material: machined brass. Cage Type: machined. Closure Type: open. Adapter Sleeve: H316. Permissible Misalignment: 1.5°. Series: 222. Base Number: 22216. Bearing Material: chrome steel. Lubricant: grease or oil. Design Units: Metric.

Decoding the designation

22216 — SKF’s number for the 222 dimension series, 80 x 140 x 33 mm.

K — tapered bore, 1:12 taper.

M — machined brass cage.

W33 — an annular groove around the outer ring outside diameter with three radial feed holes into the roller path.

What these specs mean in practice

Two roller rows run on one spherical raceway ground into the outer ring, so the inner ring and roller assembly swivel inside the outer ring. Permissible Misalignment: 1.5° absorbs shaft deflection under load and out-of-line housing bores that would edge-load a cylindrical or deep groove bearing. Both rows share radial load and the type takes thrust in either direction.

Cage Material: machined brass. A solid brass cage is machined from bar rather than pressed from sheet, so it stands up to high temperature, to poor or marginal lubrication and to heavy vibration better than a pressed steel cage. That is the reason it is specified on mill stands, vibrating screens, crushers and hot fan bearings.

Bore Type: tapered 1:12. Driving the bearing up the taper spreads the inner ring and reduces the radial internal clearance, so the running fit is set by measurement during mounting rather than by shaft tolerance alone.

The W33 groove and its three radial holes take lubricant from the housing lubrication port straight into the roller path. Lubricant: grease or oil — the same passages serve a grease gun, a single-point lubricator or a circulating-oil feed.

Quantity and configuration

Unit Quantity: 1 Pc.

Mounting data

The 1:12 tapered bore seats on an adapter sleeve. Adapter Sleeve: H316, whose tapered outside diameter is 80 mm and whose shaft seat is 70 mm, secured with a KM 16 locknut and an MB 16 lockwasher. Housing bore 140 mm, seat length 33 mm. Clearance reduction is measured with a feeler gauge as the bearing is driven up the taper.

Interchange guidance

80 x 140 x 33 mm is the ISO boundary size for a 22216, so tapered-bore 22216 K executions from other makers share the envelope and the 1:12 taper. Match the cage as well as the size: the 22216 CCK/W33 on this envelope runs pressed steel window cages and is a related execution rather than a like-for-like brass-cage swap. Searchable variants of the part number: 22216KMW33, 22216-K-M-W33, 22216 K M W33, 22216KM/W33.