7236-BCBM 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 7236-BCBM model number is decoded

7236 BCBM is SKF's 180 mm-bore single-row angular-contact ball bearing in the 7200 series, nominal 40° (B) contact angle, 180×320×52 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. 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 180×320×52 mm (7.087×12.598×2.047 in), 70.0 mm radial section height, C 291 kN, C0 375 kN, Pu 10 kN.reference speed 2,400 r/min (thermal) and limiting speed 2,600 r/min (mechanical), catalogue mass 18000 g. Speed planning distinguishes the two published ceilings mechanically: the cage and balls tolerate 2,600 r/min while thermal balance under catalogue load sets the 2,400 r/min reference; at dm ≈ 250.0 mm the corresponding dn is approximately 650k mm·r/min. Selection figures for 7236 BCBM: the static-to-dynamic ratio C0/C is 1.29, Pu 10 kN is about 3 % of C, and catalogue mass works out to roughly 100 g per millimetre of bore. Speed-ratio note for this exact unit: the reference speed is 2,400 r/min against a 2,600 r/min limiting speed, i.e. a reference-to-limit ratio of 0.92. Non-optimized universal execution: BCBM keeps the earlier internal geometry (no E) with CB Normal-clearance set mounting and a machined brass ball-centred cage; it is stocked for positions built around its established ratings rather than the enhanced E ball complement.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Assign interference to the rotating ring — roughly m6 on a 180 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• 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.
• 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.
• Fillet radii must clear the chamfer so the 52 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
• The steep 40° angle of 7236-BCBM 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 BCBM 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.