7204-BEP bearing: complete specifications & equivalents
The 7204-BEP is a ISO 15 radial bearing sized 20 x 47 x 14 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 20 mm |
| Outer diameter D | 47 mm |
| Width B | 14 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 13.3 kN |
| Basic static load rating C0 | 7.65 kN |
| Fatigue load limit Pu | 0.325 kN |
| Reference speed (thermal) | 19000 rpm |
| Limiting speed (mechanical) | 18000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 110 g |
| Manufacturer designation | 7204 BEP |
| 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 & 7200-series range
| Bore d | 0.787 in |
|---|---|
| Outer diameter D | 1.85 in |
| Width B | 0.551 in |
| ISO bore code | 04 |
| Radial section height (D−d)/2 | 13.5 mm |
| Smallest bore in 7200-series | 10 mm |
| Largest outer diameter in 7200-series | 540 mm |
| Width range across 7200-series | 9–85 mm |
| Bore position in 7200-series (smallest first) | 5 of 36 |
| Bore above smallest 7200-series size | 10 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 7204-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 20×47×14 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 7204-BE-2RZP | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 20×47×14 mm envelope with catalogue ratings within 10 %; 7204 BE-2RZP is the glass-fibre PA66 cage, non-contact NBR seals (-2RZ) execution of this size — boundary dimensions interchangeable, execution differs. |
| 7204-BECBP | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 20×47×14 mm envelope with catalogue ratings within 10 %; 7204 BECBP is the glass-fibre PA66 cage, open arrangement execution of this size — boundary dimensions interchangeable, execution differs. |
| 7204-BECBPH | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 20×47×14 mm envelope with catalogue ratings within 10 %; 7204 BECBPH is the PEEK cage, open arrangement execution of this size — boundary dimensions interchangeable, execution differs. |
| 7204-BECBY | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 20×47×14 mm envelope with catalogue ratings within 10 %; 7204 BECBY is the brass cage, open arrangement execution of this size — boundary dimensions interchangeable, execution differs. |
| 7204-BECBM | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 20×47×14 mm envelope with catalogue ratings within 10 %; 7204 BECBM is the brass cage, open arrangement execution of this size — boundary dimensions interchangeable, execution differs. |
| 7204-ACCBM | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 20×47×14 mm envelope, but catalogue C/C0 differ between executions (13.3/7.65 kN vs 16/9.3 kN) — boundary dimensions match, not a load-rating equivalent. |
| 7204 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 7204 BEP is the basic 20×47×14 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 7204-BEP model number is decoded
7204 BEP is SKF's 20 mm-bore single-row angular-contact ball bearing in the 7200 series, nominal 40° (B) contact angle, 20×47×14 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. glass-fibre reinforced PA66 cage, ball-centred (suffix P), with a 120 °C continuous-temperature ceiling. The plain BEP is a basic single bearing: its faces are not ground for universal matching, so defined pairs require the BECBP execution rather than two arbitrary BEP units.. Envelope 20×47×14 mm (0.787×1.85×0.551 in), 13.5 mm radial section height, C 13.3 kN, C0 7.65 kN, Pu 0.325 kN.reference speed 19,000 r/min (thermal) and limiting speed 18,000 r/min (mechanical), catalogue mass 110 g. The 0.325 kN fatigue load limit is the equivalent-load floor for long-life adjustment; with 13.3/7.65 kN ratings and 110 g mass this execution carries about 0.67 kN of C per millimetre of bore. Sizing arithmetic on the 20 mm bore: 13.3 kN C divided by the 13.5 mm radial section height gives 1.0 kN per section millimetre; the 110 g mass and 2 % Pu/C share frame the light-load floor for the adjusted-life check. Bore-to-OD planning: OD 47 over bore 20 is a 2.35× step for this size, and the 14 mm width gives a bore/width ratio of 1.43; use these ratios when housing space around the 20 mm shaft is the first constraint. Basic polymer-cage execution: BEP is delivered as an individual open bearing with the 40-degree optimized internals and a glass-fibre PA66 ball-centred cage; it is not ground on the side faces for arbitrary pairing, so a reversing-thrust position should order BECBP for a set rather than mounting two unmatched BEP units.
Typical equipment & failure modes
Common applications
- miniature turbine and gyro drives
- high-speed engraving and routing spindles
- small machine-tool spindles and high-speed heads
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
- PA66 cage creep or embrittlement when the non-universal single bearing is run above 120 °C
- raceway staining from water in the lubricant during idle periods
- rolling-contact fatigue spalling after the rated L10 life is exceeded
Selection pitfalls — read before you substitute
- One 7204-BEP locates the shaft in one axial direction only; reversing-thrust positions need a DB or DF pair — or a double-row bearing — with preload set from the load diagram, never from assembly feel.
- One 7204-BEP locates the shaft in one axial direction only; reversing-thrust positions need a DB or DF pair — or a double-row bearing — with preload set from the load diagram, never from assembly feel.
- Reference and limiting speeds are different ceilings: design to both, and remember preload and oil/air cooling move the real thermal limit far from the catalogue reference value.
- Greased positions should fill roughly 25–35 % of the free volume on a 7204-BEP of this section and route the surplus past the outer ring; overpacking churns the grease and reproduces the thermal preload problem mechanically.
- The steep 40° angle of 7204-BEP 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.
- Catalogue ratings are SKF PUB BU/P1 17000 figures for 7204 BEP as the single basic pa66 execution; the other order numbers of the 7204 size are different products and may carry different ratings — always quote the full designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 7204-BEP?
7204 BEP measures 20 mm bore × 47 mm OD × 14 mm width (0.787 × 1.85 × 0.551 in), mass about 110 g. SKF 17000 ratings: C 13.3 kN, C0 7.65 kN, Pu 0.325 kN, reference speed 19,000 r/min (thermal) and limiting speed 18,000 r/min (mechanical).
What does the BEP 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. glass-fibre reinforced PA66 cage, ball-centred (suffix P), with a 120 °C continuous-temperature ceiling. The plain BEP is a basic single bearing: its faces are not ground for universal matching, so defined pairs require the BECBP execution rather than two arbitrary BEP units..
Which grease and fill for 7204-BEP?
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, and stay within the — the PA66 cage sets the ceiling, not the steel. Oil-air or oil-jet lubrication is the choice near the 18,000 r/min ceiling.
What do the reference and limiting speeds mean for 7204-BEP?
The 19,000 r/min reference (thermal) and 18,000 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.