32209-SKF bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric single-row TRB) · extracted 2026-09-28

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric single-row TRB); 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 32209-SKF model number is decoded

SKF 32209 (SKF 32209) is the heavy section tapered roller choice for a 45 mm shaft — one row of tapered rollers on an asymmetric raceway inside the 85×24.75 mm ISO 355 envelope.Digit by digit, 32209 reads as bearing type 3 (single-row tapered roller), heavy section series 22, and bore reference 09 resolving to 45 mm; 85 mm OD and 24.75 mm width are the matching ISO 355 boundary values. In SKF suffix language a bare 32209 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. The 20.0 mm radial section height ((85−45)/2) and 580 g catalogue mass frame a 45 mm bore bearing rated at 98.7 kN C — roughly 2.19 kN of dynamic capacity per millimetre of bore before application factors. A single 32209 locates the shaft in one axial direction only; mount it against a second bearing in O (back-to-back) or X (face-to-face) arrangement, and set the running clearance by the mounting procedure — not by feel. Load system: the 98.7 kN basic dynamic rating C and 98 kN static rating C0 give a C0/C balance of 0.99, and dividing C by the 45 mm bore yields 2.19 kN per millimetre of journal — a density metric that compares across families; the 11 kN fatigue limit Pu is the floor beneath which the adjusted-life calculation drops below acceptable L10 hours for a 45 mm shaft carrying variable duty.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 45 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight 32209 pair heats, loses setting control and smears the roller-rib contact.
• The 322 series at 45 mm bore (85×24.75 mm) is a wider, higher-capacity section than 30209; do not substitute without re-checking shaft shoulder diameters and pair setting.
• When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 32209 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• The tapered contact angle creates an induced axial load under pure radial force; include it in the 32209 rating calculation (and account for it in both bearings of a pair) or the unloaded bearing skids its rollers.
• The pressed-steel cage is rated for standard industrial service; sustained running above the limiting speed or with degraded lubricant wears the cage pockets — inspect the cage at every relubrication interval.
• The 98.7/98 kN ratings are SKF catalogue 17000 values for the basic 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 32209 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 32209 designation when purchasing and match the execution to the mounting arrangement.