7203-ACCBM 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 7203-ACCBM model number is decoded

7203 ACCBM is SKF's 17 mm-bore single-row angular-contact ball bearing in the 7200 series, nominal 25° (AC) contact angle, 17×40×12 mm to the ISO dimension plan. AC sets the 25° contact angle, CB marks universal matching with Normal axial clearance, and M the machined brass ball-centred cage. 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. 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 17×40×12 mm (0.669×1.575×0.472 in), 11.5 mm radial section height, C 12.5 kN, C0 6.7 kN, Pu 0.285 kN.reference speed 24,000 r/min (thermal) and limiting speed 34,000 r/min (mechanical), catalogue mass 65 g. Sizing arithmetic on the 17 mm bore: 12.5 kN C divided by the 11.5 mm radial section height gives 1.1 kN per section millimetre; the 65 g mass and 2 % Pu/C share frame the light-load floor for the adjusted-life check. Mass and section check: 65 g inside the 17×40×12 mm outline leaves a 11.5 mm radial section, and the 6.7 kN static rating is 0.54× the dynamic rating — plan static safety and minimum load against those numbers rather than against sister executions. Bore-to-OD planning: OD 40 over bore 17 is a 2.35× step for this size, and the 12 mm width gives a bore/width ratio of 1.42; use these ratios when housing space around the 17 mm shaft is the first constraint. High-angle alternative note: ACCBM carries the 25-degree AC contact angle (not the 40-degree B), CB Normal-clearance universal faces and a machined brass cage; it runs faster and cooler than a BECBM of the same envelope but accepts a smaller axial share, so substitute only after re-running the load-ratio check.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Assign interference to the rotating ring — roughly j5 on a 17 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• Assign interference to the rotating ring — roughly j5 on a 17 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• Do not mix execution classes inside one set: a universally matchable ACCBM unit is ground for arbitrary pairing, a basic execution is not.
• DB pairs give the highest moment stiffness, DF pairs tolerate misalignment and thermal expansion better, DT shares heavy one-direction thrust; choose from the shaft thermal calculation rather than by habit.
• The 25° AC angle of 7203-ACCBM runs faster and cooler than a 40° B bearing of the same envelope, but its thrust capacity and induced-load behaviour differ — do not swap AC for B without re-running the axial-load calculation.
• Universally matchable ACCBM 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.