FAGDouble-Row Spherical Roller Bearing 120x215x58 mm, Straight Bore, Machined Brass Cage, W33 Lubrication Groove

Product Description

Part identity

A single 222-series double-row spherical roller bearing in the ISO 22224 envelope. Brand: FAG. Manufacturer: FAG (Schaeffler). Part Number: 22224AS.MB. Base Number: 22224. Series: 222 (ISO 22224). Bearing Type: spherical roller bearing, double row, self-aligning. Condition: New. Unit Quantity: 1 bearing, complete assembly.

Dimensions and envelope

Bore d: 120 mm. Outside Diameter D: 215 mm. Width B: 58 mm. Bore Type: straight (cylindrical). Ring chamfer r (min): 2.1 mm, ISO 22224 envelope. Design Units: Metric. Item Weight: approximately 9.1 kg (20.1 lb), ISO 22224 MB envelope reference.

Designation decode

Read in FAG’s own scheme. 22224 is the ISO base number for a 222-series double-row spherical roller bearing with a 120 mm bore. MB denotes a machined brass solid cage centred on the inner ring, the heavy-duty execution used where speed, shock load and elevated temperature are present. AS is a FAG execution notation tied to the lubrication feature set. W33, carried on the cross-reference, denotes an annular lubrication groove and three radial holes through the outer ring. The absence of a K means a straight cylindrical bore seat.

Internal geometry and clearance

Number Of Rows: 2. Rolling Elements: barrel (spherical) rollers. Internal Clearance: CN (normal) — this is a clearance-set bearing with no preload suffix. Cage Type: machined solid cage, inner-ring centred (MB). Cage Material: brass. Bearing Material: through-hardened bearing steel. Closure Type / Seal Type: open. Precision Rating: ABEC 1 / P0. Running Accuracy: P0.

Load behaviour and misalignment

Two rows of barrel rollers run on a common spherical outer-ring raceway, so the inner ring, rollers and cage swivel inside the outer ring. The consequence is very high radial capacity combined with tolerance of both static and dynamic misalignment. Load-calculation factors for the envelope: e 0.28, Y1 2.4, Y2 3.6, Y0 2.4. On a double-row spherical roller bearing the basic static rating sits above the basic dynamic rating; that ordering is normal for the family.

Lubrication and temperature

Lubricant: oil or grease. Relubrication Feature: W33 annular groove with three lubrication holes in the outer ring, giving a feed path straight into both roller sets from a housing lubrication port aligned to the groove. Min Temp: -30 °C. Max Temp: 200 °C. A brass MB cage remains dimensionally stable across that range and behaves well under oil-mist and marginal lubrication.

Cross-references and alternates

Cross-Reference: 22224-AS-MB-W33 as marked; 22224 MB W33 ISO brass-cage designation; SKF 22224 E (pressed steel cage); Timken 22224EM (E design, brass cage); Rollway / Regal Rexnord 22224 MB W33 (brass cage, W33 groove). Harmonization Code: 8482.30.00. FAG’s current production family in the 22224 size is the 22224-E1(A) series. Cage execution and clearance class govern substitution within the size; the 232 series, for example 23224, is wider in the same bore and occupies a different housing width.

Typical applications

Gearboxes, conveyor head and tail shafts, fan and blower shafts, vibrating screens, pulp and paper machinery, crushers, mixers and agitators, and heavy plummer-block positions. Compatible With: housings and shaft seats machined for an ISO 22224 (120 x 215 x 58 mm) double-row spherical roller bearing with a straight bore. Industry Terms: spherical roller bearing; self-aligning roller bearing; double row barrel roller bearing; SRB; brass cage roller bearing; W33 lube groove bearing.