7322-BECBM bearing: complete specifications & equivalents
The 7322-BECBM 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 | SKF |
| 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 | brass |
| Basic dynamic load rating C | 240 kN |
| Basic static load rating C0 | 245 kN |
| Fatigue load limit Pu | 7.8 kN |
| Reference speed (thermal) | 3400 rpm |
| Limiting speed (mechanical) | 4500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 10000 g |
| Manufacturer designation | 7322 BECBM |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 7300-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 7300-series | 10 mm |
| Largest outer diameter in 7300-series | 420 mm |
| Width range across 7300-series | 11–80 mm |
| Bore position in 7300-series (smallest first) | 23 of 31 |
| Bore above smallest 7300-series size | 100 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 7322-BEY | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 110×240×50 mm envelope with catalogue ratings within 10 %; 7322 BEY is the brass cage, open arrangement execution of this size — boundary dimensions interchangeable, execution differs. |
| 7322-BEM | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 110×240×50 mm envelope with catalogue ratings within 10 %; 7322 BEM is the brass cage, open arrangement execution of this size — boundary dimensions interchangeable, execution differs. |
| 7322-BECBP | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 110×240×50 mm envelope with catalogue ratings within 10 %; 7322 BECBP is the glass-fibre PA66 cage, open arrangement execution of this size — boundary dimensions interchangeable, execution differs. |
| 7322-BECBY | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 110×240×50 mm envelope with catalogue ratings within 10 %; 7322 BECBY is the brass cage, open arrangement execution of this size — boundary dimensions interchangeable, execution differs. |
| QJ-322-N2MA | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 110×240×50 mm envelope, but catalogue C/C0 differ between executions (240/245 kN vs 390/480 kN) — boundary dimensions match, not a load-rating equivalent. |
| 7322 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 7322 BECBP is the basic 110×240×50 mm angular-contact page with ratings within 10 % of this execution — same boundary dimensions, verify execution details. |
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 7322-BECBM model number is decoded
7322 BECBM is SKF's 110 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 110×240×50 mm to the ISO dimension plan. 40° contact angle (suffix B): the steep standard single-row angle, giving the highest axial capacity at the cost of speed, with a recommended load ratio Fa/Fr ≥ 1. E marks the optimized internal design with an enhanced ball complement and race geometry. machined brass cage, ball-centred (suffix M), the choice for high speed, marginal lubrication and shock duty. CB means universally matchable with Normal axial internal clearance: the two side faces are ground so any two units form DB (back-to-back), DF (face-to-face) or DT (tandem) sets without regrinding. Envelope 110×240×50 mm (4.331×9.449×1.969 in), 65.0 mm radial section height, C 240 kN, C0 245 kN, Pu 7.8 kN.reference speed 3,400 r/min (thermal) and limiting speed 4,500 r/min (mechanical), catalogue mass 10000 g. Load balance: C0 245 kN against C 240 kN gives a 1.02 ratio, typical of a steep-angle axial-oriented design; Pu 7.8 kN enters the SKF adjusted-life equation rather than the basic rating life. The 7.8 kN fatigue load limit is the equivalent-load floor for long-life adjustment; with 240/245 kN ratings and 10000 g mass this execution carries about 2.18 kN of C per millimetre of bore. Bore-to-OD planning: OD 240 over bore 110 is a 2.18× step for this size, and the 50 mm width gives a bore/width ratio of 2.20; use these ratios when housing space around the 110 mm shaft is the first constraint. Cage detail specific to this order number: the M cage is a one-piece machined brass window cage centred on the balls, chosen for high speeds, thin-film lubrication and shock loads; it is heavier and stiffer than the stamped Y-cage execution and tolerates interrupted oil supply far better than the PA66 or PEEK alternatives. Do not substitute the stamped-brass BECBY order number expecting identical cage behaviour.
Typical equipment & failure modes
Common applications
- dryer-cylinder pinion shafts
- medium and large machine-tool spindles
- industrial gearboxes and speed reducers
Known failure patterns
- thermal preload runaway in a back-to-back pair when inner-ring heat cannot expand away
- false brinelling on idle paired sets exposed to machine vibration
- raceway smearing under minimum-axial-load starvation at light load and high speed
- brass cage-pocket smearing under long periods of unloaded running with marginal oil film
- electrical pitting on VFD-driven shafts without grounding protection
- electrical pitting on VFD-driven shafts without grounding protection
Selection pitfalls — read before you substitute
- Do not mix execution classes inside one set: a universally matchable BECBM unit is ground for arbitrary pairing, a basic execution is not.
- Do not mix execution classes inside one set: a universally matchable BECBM unit is ground for arbitrary pairing, a basic execution is not.
- Keep the load ratio in the SKF design range: Fa/Fr ≥ 1 for this angle; below it the balls unload the contact ellipse and skid, which is why the catalogue insists on a minimum axial load (Fam ≈ A·(n·dm/1000)²) at high speed.
- Fillet radii must clear the chamfer so the 50 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- The steep 40° angle of 7322-BECBM favours thrust-heavy combined loads; for a predominantly radial high-speed position the 25° ACCBM execution of the same size is the alternative order number.
- Universally matchable BECBM bearings arrive ready for set mounting, not preloaded sets: preload results from how the set is clamped, so follow the SKF stand-off-ring and nut-torque procedure.
Frequently asked questions
What are the dimensions and catalogue data of 7322-BECBM?
7322 BECBM measures 110 mm bore × 240 mm OD × 50 mm width (4.331 × 9.449 × 1.969 in), mass about 10000 g. SKF 17000 ratings: C 240 kN, C0 245 kN, Pu 7.8 kN, reference speed 3,400 r/min (thermal) and limiting speed 4,500 r/min (mechanical).
What does the BECBM suffix mean?
40° contact angle (suffix B): the steep standard single-row angle, giving the highest axial capacity at the cost of speed, with a recommended load ratio Fa/Fr ≥ 1. E marks the optimized internal design with an enhanced ball complement and race geometry. machined brass cage, ball-centred (suffix M), the choice for high speed, marginal lubrication and shock duty. CB means universally matchable with Normal axial internal clearance: the two side faces are ground so any two units form DB (back-to-back), DF (face-to-face) or DT (tandem) sets without regrinding.
Which grease and fill for 7322-BECBM?
A premium mineral-oil grease with polyurea or lithium complex thickener and NLGI 2 consistency suits normal operating temperature; fill roughly 25–35 % of the free volume. Oil-air or oil-jet lubrication is the choice near the 4,500 r/min ceiling.
What do the reference and limiting speeds mean for 7322-BECBM?
The 3,400 r/min reference (thermal) and 4,500 r/min limiting (mechanical) speeds are catalogue conditions; preload, lubrication and heat removal move the permissible value, so re-calculate for the actual arrangement.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-27. Read our editorial & correction policy.