22328 bearing: complete specifications & equivalents
The 22328 is a ISO 15 radial bearing sized 140 x 300 x 102 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 140 mm |
| Outer diameter D | 300 mm |
| Width B | 102 mm |
| Seal / shield | open |
| Internal clearance | CN / C3 / C4 available |
| Tolerance class | P0 |
| Cage | steel |
| Operating temperature | -30 to +120 °C |
| Mass (geometry estimate) | 28777 g |
| Standard | ISO 15 |
| Catalog version | iso15-srb-geometry |
| Last verified | 2026-09-24 |
Source: ISO 15 boundary-dimensions standard · extracted 2026-09-24
Standard-interchange bearing: dimensions per ISO 15; CN clearance, P0 tolerance and a stamped-steel cage are catalogue defaults unless the supplier states otherwise, and mass is a geometry-derived estimate. Brand catalogue load ratings and limiting speeds for 22328 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 22300-series range
| Bore d | 5.512 in |
|---|---|
| Outer diameter D | 11.811 in |
| Width B | 4.016 in |
| ISO bore code | 28 |
| Radial section height (D−d)/2 | 80 mm |
| Smallest bore in 22300-series | 40 mm |
| Largest outer diameter in 22300-series | 320 mm |
| Width range across 22300-series | 33–108 mm |
| Bore position in 22300-series (smallest first) | 17 of 18 |
| Bore above smallest 22300-series size | 100 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22328 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 22328 model number is decoded
In the 22300-series (ISO 15 dimension series) the leading 2 marks a double-row spherical roller and the last two digits of 22328 encode the bore: code 28 = 140 mm (code × 5 from 04 upward). The ISO 15 envelope is 300 mm outside diameter and 102 mm width — 5.512 × 11.811 × 4.016 in, with a 80.0 mm radial section height. Two rows of symmetrical barrel rollers on a common sphered outer raceway self-align to shaft deflection while carrying heavy radial load and bidirectional axial load. Typical catalogue practice for a rotating inner ring is a m6 shaft seat, H7 housing and C3 internal clearance; K variants use a 1:12 tapered bore on an adapter sleeve — verify against the mounting arrangement.
Typical equipment & failure modes
Common applications
- mining and aggregate vibrating screens
- jaw and cone crusher eccentric shafts
- paper machine drying cylinders
- large gear drives and mill pinions
- heavy conveyor drum pulleys
Known failure patterns
- thermal seizure when an interference shaft fit plus hot running removes all residual radial clearance from a CN bearing
- raceway and roller spalling after the L10 life or from sustained overload and shock in crusher duty
- roller smearing and skid marks when the radial load falls below the minimum load needed to drive the roller set
- cage fatigue and fracture on vibratory screens supplied with normal CN clearance instead of a vibratory C4 fit
- fretting corrosion on a tapered-bore sleeve seat when drive-up is insufficient and the inner ring works on the adapter
Selection pitfalls — read before you substitute
- The large 140 mm-bore 22328 mounts with real force: use induction heating or hydraulic drive-up on the tapered seat, measure residual clearance in micrometres, and plan lifting fixtures — the 102 mm double-row assembly cannot be drifted into position without brinelling.
- The 223 heavy wide series at 140 mm bore (300×102 mm) is selected for shock and high radial load in screens and crushers; its 80.0 mm section needs correspondingly wider shaft and housing shoulders and a stiffer shaft than a 22228 on the same journal.
- Before fitting 22328, machine the 140 mm shaft seat and 300 mm housing bore with a relief or small fillet so nothing bridges the bearing chamfer; the 102 mm-wide rings only load correctly when the full faces abut, and a large radius pinches the 80.0 mm radial section.
- On a K tapered bore with adapter sleeve, tighten the KM locknut to drive the 22328 up the sleeve, rotating the inner ring, and stop on residual clearance — measured with feelers at the unloaded rollers — not on torque alone; then lock the tab washer so the 140 mm seat cannot creep.
- When reusing a sleeve-mounted 22328, inspect the adapter and lock parts together with the bearing: a stretched sleeve or a bent lockwasher tab that let the inner ring creep on the 140 mm journal must be replaced, or the new bearing frets the same seat.
- Press 22328 using the right ring: force on the inner ring for an interference shaft fit and on the outer ring for a housing fit — transmitting mounting force through the barrel rollers brinells the sphered raceways of the 300 mm assembly.
- Match the cage to the duty: the E/CC stamped window-steel cage is the standard for general 22328 service, while the machined brass CA cage is preferred for heavy shock and vibratory applications — never replace a CA row with a CC row in a screen or crusher without re-rating.
Frequently asked questions
What are the dimensions of a 22328 spherical roller bearing?
A 22328 double-row spherical roller bearing per ISO 15 has a 140 mm bore, 300 mm outer diameter and 102 mm width (5.512 × 11.811 × 4.016 in), a 80.0 mm radial section and roughly 28777 g geometry-based estimated mass; catalogue masses vary with cage and design.
How does the 22328 bore code work?
The leading 2 in 22328 denotes a double-row spherical roller, the middle digits give the ISO 15 dimension series, and the last two digits are bore code 28: 28 × 5 = 140 mm. The 300 mm OD and 102 mm width come from the dimension series (22300), not from the bore code alone.
How much misalignment can a 22328 accommodate?
Thanks to the sphered outer ring raceway, 22328 normally accommodates angular misalignment of around 1° under load (up to about 2° in favourable, lightly loaded conditions); the permissible value is smaller under full load and depends on clearance and cage design, so check the catalogue figure for the actual duty.
What is the difference between 22328 and 22328K?
The plain 22328 has a cylindrical bore for a straight shaft seat. The K suffix denotes a 1:12 tapered bore, normally mounted on an H3xx adapter sleeve over a commercial shaft (or directly on a tapered journal); the bearing is driven up the sleeve to a specified residual clearance and locked with a KM nut and tab washer.
Should the 22328 be ordered with CN, C3 or C4 clearance?
Use C3 as the usual default when the rotating inner ring has an interference fit, because the fit plus thermal expansion reduces residual play; choose C4 (often with a vibratory cage design) for screens and feeders; order CN mainly for loose fits on stationary shafts or split housings. A W33 outer-ring lubrication groove is a separate, commonly combined option.
Reviewed & verified by the MPN Base engineering desk against source catalog iso15-srb-geometry on 2026-09-24. Read our editorial & correction policy.