7204 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 3.1 single-row ACBB) · extracted 2026-09-26

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 3.1 single-row ACBB); 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 7204 model number is decoded

The SKF 7204 BEP is a 20×47×14 mm single-row angular-contact ball bearing — the light (7200) series of the SKF 7xxx line, built on the ISO 15 envelope shared with the 6204 deep-groove size but cut for combined radial and one-direction axial load.Reading the designation: the leading 7 marks a single-row angular-contact ball bearing, the 2 is ISO diameter series 2 (light section), and the last two digits encode the 20 mm bore; the 47 mm OD and 14 mm width follow the ISO 15 general plan. Here B marks the steep 40° contact angle (the highest-capacity single-row angle), E the modernised internal geometry and P the glass-fibre nylon cage; the same bare size in a 25° A-angle or brass M-cage execution carries a different suffix. The 0.325 kN Pu figure feeds the SKF adjusted-life equation at contaminated or partial-film conditions, and the 0.58 C0/C balance shows this execution is tuned to thrust-heavy combined loads rather than pure radial running. For a 20 mm shaft the usual seat is k5 with an H7 housing when the inner ring rotates; arrange two 7204 bearings as a set for two-direction location and set preload from the load diagram, never from assembly feel.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At a 20 mm bore the thin rings are easily distorted by an over-tight shaft nut; check seat runout (target Ra ≤ 0.8 µm) and torque the locknut progressively — a pinched 7204 shows up as spindle vibration long before it fails.
• The 72xx light section at 20 mm bore is the general-purpose angular-contact envelope (47×14 mm); stepping up to a 7304 changes OD, width and heat generation — it is not a drop-in swap when the housing and speed are fixed.
• Preload is a design value, not an assembly feel: excessive preload in the 7204 pair raises operating temperature and can trigger thermal runaway back-to-back, while too little lets the balls skid and smear the raceway under light load.
• The 40° contact angle creates an induced axial load under pure radial force; include it in the 7204 rating calculation (and account for it in both bearings of a pair) or the unloaded bearing skids its balls.
• Never press both rings through the wrong element during fitting: force for an interference shaft seat goes through the inner ring only, or brinell marks on the 47 mm race release as noise within the first running hours.
• The 13.3/7.65 kN ratings are SKF catalogue 17000 values for the 7204 BEP execution; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification and re-verify for critical drives.
• SKF lists several executions of 7204 (BEP basic, BECBP universally matchable, BE-2RZP sealed, BECBM brass-cage, ACC-series at 25°); they are not interchangeable order numbers — quote the full 7204 BEP designation when purchasing and match the execution to the mounting arrangement.
• A plain 7204 BEP is a single open bearing, not a universally matchable one; to mount a defined DB/DF pair order the BECBP (CB) execution — pairing two unmatched basic units gives uncontrolled preload because the side faces are not ground for set mounting.