21322 bearing: complete specifications & equivalents
The 21322 is a ISO 15 radial bearing sized 110 x 240 x 50 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 110 mm |
| Outer diameter D | 240 mm |
| Width B | 50 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 600 kN |
| Basic static load rating C0 | 640 kN |
| Fatigue load limit Pu | 70 kN |
| Reference speed (thermal) | 2700 rpm |
| Limiting speed (mechanical) | 4000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 11060 g |
| Manufacturer designation | FAG 21322-E1-XL-TVPB |
| Standard | ISO 15 |
| Catalog version | Schaeffler HR1 (2022 ed.), spherical roller bearings |
| Last verified | 2026-09-26 |
Source: catalog reference (Schaeffler HR1 (2022 ed.), spherical roller bearings) · extracted 2026-09-26
Parameters extracted from the official FAG Rolling Bearings catalogue (Schaeffler HR1 (2022 ed.), spherical roller bearings); FAG® is a trademark of Schaeffler Technologies AG & Co. KG, used here for identification only — mpnbase is not an authorized FAG/Schaeffler distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at schaeffler.com.
Dimensions in inches & 21300-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 9.449 in |
| Width B | 1.969 in |
| ISO bore code | 22 |
| Radial section height (D−d)/2 | 65 mm |
| Smallest bore in 21300-series | 40 mm |
| Largest outer diameter in 21300-series | 240 mm |
| Width range across 21300-series | 23–50 mm |
| Bore position in 21300-series (smallest first) | 14 of 14 |
| Bore above smallest 21300-series size | 70 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 21322 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
| 21322-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
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 21322 model number is decoded
21322 is a double-row spherical roller bearing in the 21300-series family: two rows of barrel rollers on a common sphered outer raceway, self-aligning under shaft deflection, listed by FAG in Schaeffler catalogue HR1. Reading the designation: the leading 2 marks a spherical roller bearing, the 13 is the ISO 15 dimension series (dimension series 13 (heavy OD, normal width)), and the last two digits encode the 110 mm bore; the 240 mm OD and 50 mm width follow the ISO 15 general plan. The FAG suffix chain reads E1 (X-life internal design with increased load ratings) plus TVPB (glass-fibre reinforced polyamide window cage); a K in the middle of the designation (e.g. 21322-E1-XL-K-TVPB) marks the 1:12 tapered-bore variant for adapter-sleeve mounting. Selection arithmetic: the C0/C ratio is about 1.07 (static 640 kN against dynamic 600 kN), typical of a spherical roller sized for heavy combined loads, and the 70 kN fatigue load limit Pu is the equivalent-load floor used in the life calculation. After mounting, swing the outer ring to confirm free self-alignment: the 21322 should tilt through its full catalogue misalignment range without binding; a stiff joint signals a cocked seat or shoulder interference.
Typical equipment & failure modes
Common applications
- jaw and cone crusher main shafts
- paper-machine press and dryer rolls
- rolling-mill pinion and back-up shafts
- large vibrating screens and feeders
Known failure patterns
- raceway fatigue spalling of the sphered outer raceway after extended service above the catalogue L10 rating
- inner-ring raceway spalling from edge loading when misalignment exceeds the self-aligning recovery range
- cage pocket wear or fracture from roller skew at insufficient minimum load or rapid acceleration
- roller-end scoring from starved lubricant at start-up before the grease channel purges
- false brinelling on standby machines exposed to external vibration
Selection pitfalls — read before you substitute
- Mount the 110 mm bore 21322 by induction heating (max 120 °C) or oil injection — driving a bearing of this section home through the rollers brinells both raceways, and the damage only speaks up as vibration hours later.
- The 21300-series series at 110 mm bore (240×50 mm) pairs a heavy OD with a narrow section — a compact way to add capacity, but the shoulder and abutment diameters differ from the 222 series; it is not a drop-in swap.
- Catalogue reference speed and limiting speed are different limits: the 2,700 r/min reference is a thermal criterion under load, while the 4,000 r/min limiting value is the mechanical ceiling — observe both.
- Open spherical roller bearings rely on the housing seals; in screening or crusher duty a failed seal lets grit into the sphered raceway and the 21322 pits long before its L10 life.
- The 600/640 kN ratings are FAG catalogue values for this exact execution (21322-E1-XL-TVPB); FAG can revise internal geometry without changing the order number, so keep the catalogue version (Schaeffler catalogue HR1) with the specification and re-verify for critical drives.
- FAG lists several executions of 21322 (cylindrical bore as listed, tapered-bore 21322-E1-XL-K variant, plus sealed and vibrating-screen options in the same envelope); they are not interchangeable order numbers — quote the full 21322-E1-XL-TVPB designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 21322?
The 21322-E1-XL-TVPB is a double-row spherical roller bearing with 110 mm bore, 240 mm outer diameter and 50 mm width (4.331 × 9.449 × 1.969 in) per ISO 15. From Schaeffler catalogue HR1: basic dynamic load rating C 600 kN, C0 640 kN, fatigue load limit Pu 70 kN, reference speed 2,700 r/min, limiting speed 4,000 r/min, mass about 11060 g. It is an open, self-aligning bearing with a glass-fibre reinforced polyamide (PA66) window cage.
How does the 21322 bore code work?
The last two digits of 21322 are bore code 22, so 22 × 5 = 110 mm bore. The 240 mm OD and 50 mm width come from the ISO 15 dimension-series plan (dimension series 13 (heavy OD, normal width)), shared with other spherical roller bearings of the same code.
What does the E1-XL-TVPB suffix mean on 21322?
E1-XL is the Schaeffler X-life internal design with increased load ratings, and TVPB marks a glass-fibre reinforced polyamide window cage rated to 120 °C. The K variant (21322-E1-XL-K-TVPB) has a 1:12 tapered bore for adapter-sleeve mounting.
Can 21322 accommodate misalignment and axial load?
Yes on both counts. The sphered outer raceway lets the bearing self-align ≈ 0.5–2.5° depending on series, absorbing shaft deflection and housing-seat errors. The two barrel-roller rows also carry bidirectional axial load in addition to heavy radial load — this is the key difference from cylindrical roller bearings, which take no axial load.
When should the tapered-bore 21322K variant be used instead?
Choose the K (1:12 tapered bore) variant when the bearing must seat on an adapter or withdrawal sleeve — typical for long shafts, frequent dismounting, or stepped shafts where machining a precision journal is impractical. Sleeve mounting requires measuring clearance reduction or axial drive-up, not nut torque. The cylindrical-bore 21322 listed here seats directly on a machined journal.
Reviewed & verified by the MPN Base engineering desk against source catalog Schaeffler HR1 (2022 ed.), spherical roller bearings on 2026-09-26. Read our editorial & correction policy.