32244 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 32244 model number is decoded

SKF 32244 (SKF 32244) is the heavy section tapered roller choice for a 220 mm shaft — one row of tapered rollers on an asymmetric raceway inside the 400×114 mm ISO 355 envelope.The code breaks down as type prefix 3 (tapered roller), series 22 (the heavy section), and bore code 44 = 220 mm; dimensions 220×400×114 mm therefore match the ISO 355 envelope. SKF lists the plain number as the basic execution; letter suffixes such as B denote a steeper contact angle and are different order numbers. The 90.0 mm radial section height ((400−220)/2) and 59500 g catalogue mass frame a 220 mm bore bearing rated at 1720 kN C — roughly 7.82 kN of dynamic capacity per millimetre of bore before application factors. Specify pairs rather than single units wherever thrust reverses: the tapered contact of 32244 generates an induced axial load under radial force, and an unpaired bearing on a reversing shaft will run slack and fret its seat. Load system: the 1720 kN basic dynamic rating C and 2700 kN static rating C0 give a C0/C balance of 1.57, and dividing C by the 220 mm bore yields 7.82 kN per millimetre of journal — a density metric that compares across families; the 232 kN fatigue limit Pu is the floor beneath which the adjusted-life calculation drops below acceptable L10 hours for a 220 mm shaft carrying variable duty.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 220 mm bore the cone mass is high enough that cocking during mounting damages the cage and rib; guide the ring square, confirm seat contact around the full circumference, and re-check setting after the first thermal cycle of the paired set.
• The 322 series at 220 mm bore (400×114 mm) is a wider, higher-capacity section than 30244; do not substitute without re-checking shaft shoulder diameters and pair setting.
• The tapered contact angle creates an induced axial load under pure radial force; include it in the 32244 rating calculation (and account for it in both bearings of a pair) or the unloaded bearing skids its rollers.
• Setting is a design value, not an assembly feel: excessive preload in the 32244 pair raises operating temperature and can trigger thermal runaway, while too little lets the rollers skid and smear the raceway under light load.
• Never press both rings through the wrong element during fitting: force for an interference shaft seat goes through the cone only, or brinell marks on the 400 mm cup race release as noise within the first running hours.
• The 1720/2700 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 32244 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 32244 designation when purchasing and match the execution to the mounting arrangement.