7317-BEP bearing: complete specifications & equivalents

Specification table

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.

Cross references & equivalents

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 7317-BEP model number is decoded

7317 BEP is SKF's 85 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 85×180×41 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 85×180×41 mm (3.346×7.087×1.614 in), 47.5 mm radial section height, C 146 kN, C0 122 kN, Pu 4.5 kN.reference speed 4,500 r/min (thermal) and limiting speed 4,300 r/min (mechanical), catalogue mass 4450 g. At the printed limiting speed of 4,300 r/min the mean pitch diameter dm ≈ 132.5 mm implies a dn value around 570k mm·r/min; the 4,500 r/min reference speed is the thermal-planning figure under catalogue load. The 4.5 kN fatigue load limit is the equivalent-load floor for long-life adjustment; with 146/122 kN ratings and 4450 g mass this execution carries about 1.72 kN of C per millimetre of bore. Speed-ratio note for this exact unit: the reference speed is 4,500 r/min against a 4,300 r/min limiting speed, i.e. a reference-to-limit ratio of 1.05. 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

Selection pitfalls — read before you substitute

• Assign interference to the rotating ring — roughly k5 on a 85 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• Mount by induction-heating the inner ring to max 120 °C — the PA66 cage sets the ceiling, not the steel; driving the bearing home through the outer ring or balls brinells the asymmetric raceway.
• 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.
• 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.
• The steep 40° angle of 7317-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 7317 BEP as the single basic pa66 execution; the other order numbers of the 7317 size are different products and may carry different ratings — always quote the full designation when purchasing.