NTN22218BD1C3Double-Row Spherical Roller Bearing – 90 mm Straight Bore x 160 mm OD x 40 mm Wide, C3 Clearance, Machined Steel Cage, Outer-Ring Lubrication Groove

Product Description

What this part is:

NTN 22218BD1C3 double-row spherical roller bearing, ISO 22218 size. Bore: 90 mm. Outside Diameter: 160 mm. Width: 40 mm. Bearing Type: Double-row spherical roller bearing. Number of Rows: 2. Rolling Elements: Spherical Roller. Bore Form: Straight (cylindrical). Closure Type: Open. Cage Material: Machined steel. Internal Clearance: C3. Series: 222. Lubricant: Grease or oil.

Decoding the designation:

222 — ISO dimension series 22 for double-row spherical roller bearings.

18 — bore code 18, giving a 90 mm bore.

B — NTN’s B design execution with a machined steel cage.

D1 — annular lubrication groove around the outer ring with radial feed holes into the rolling elements. This is the feature other makers code W33.

C3 — radial internal clearance greater than normal.

What these specs mean in practice:

A double-row spherical roller bearing runs two rows of barrel rollers on a single spherical raceway ground into the outer ring. The rollers follow that sphere, so the inner ring, rollers and cage swivel as a unit inside the outer ring and the bearing accommodates shaft misalignment and housing deflection without edge-loading. Both rows carry radial load, and between them they take thrust in either direction.

Bore Form: Straight. There is no K in the designation, so the bore is cylindrical and the bearing mounts directly on the shaft seat.

Internal Clearance: C3. Greater than normal radial clearance, which is what an interference shaft fit or a hot-running application uses up.

Lubricant: Grease or oil. The D1 groove and its radial holes suit either. The same passages take a grease gun, a single-point lubricator, a centralised grease system, a circulating-oil feed or an oil mist.

Axial Load Factor (e): 0.26. Axial Load Factor (Y1): 2.55. Axial Load Factor (Y2): 3.80. Axial Load Factor (Y0): 2.49. These are the ISO factors for converting a combined radial and axial load into the equivalent load for life and static safety calculation.

Mounting data:

Bearing Chamfer (r min): 2 mm. Maximum Abutment Fillet Radius (ras max): 2 mm.

Quantity and configuration:

Unit Quantity: 1 Pc. One complete bearing.

Interchange guidance:

The 90 x 160 x 40 mm envelope is ISO standard, so 22218 bearings from every maker share the shaft and housing seats. The straight bore is the deciding feature: a 22218K has a 1:12 tapered bore and mounts on an H318 adapter sleeve, so it is a related size rather than a swap. Within the same envelope NTN also builds the E design with a pressed cage, and the carton cross 22218CJ belongs to that lineage.

Searchable variants of the part number: 22218BD1C3, 22218-B-D1-C3, 22218 B D1 C3, 22218BD1, 22218 B W33/D1 C3, 22218CJ, 22218 C3.