32920 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 32920 model number is decoded

For a 100 mm shaft carrying combined load, SKF lists 32920 under catalogue execution SKF 32920: one open single-row tapered roller bearing in the very-light thin section of the 32900 family.Reading the designation: the leading 3 marks a single-row tapered roller bearing, the 29 is the ISO 355 diameter/width series (very-light thin section), and the last two digits encode the 100 mm bore; the 140 mm OD and 25 mm width follow the ISO 355 general plan. The SKF catalogue adds the ISO 355 dimension-series code after the bare number (e.g. 2CC); it is the dimensional series, not a separate part number. Speed planning uses two different ceilings: 3,400 r/min thermal reference and 4,300 r/min mechanical limiting speed. Because the contact line is tapered, one 32920 reacts thrust in a single direction; bidirectional shafts need an O or X pair, and a rotating cone on a 100 mm shaft typically takes a k5 seat with an H7 housing bore. Cross-section geometry: the 20.0 mm half-section ((140−100)/2) of this 32900-series unit places the roller large-end pitch diameter at roughly 120 mm, and the 25 mm axial width is split between cone (14 mm) and cup rib (11 mm) — a geometry that sets the contact angle and, with the 1150 g rotating cone mass, the critical speed at which cage-roller imbalance begins.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Mount the 100 mm bore 32920 by induction heating of the cone (max 120 °C — the pressed-steel cage sets the ceiling, not the steel); driving it home through the cup or rollers brinells the tapered raceway.
• The 329 series at 100 mm bore (140×25 mm) is the very-light thin-section envelope: the smallest OD of any tapered family at this bore, ideal where radial space is severely limited, but capacity is well below a 30220 of the same bore — confirm the L10 life and minimum axial load before choosing it.
• Setting is a design value, not an assembly feel: excessive preload in the 32920 pair raises operating temperature and can trigger thermal runaway, while too little lets the rollers skid and smear the raceway under light load.
• Setting is a design value, not an assembly feel: excessive preload in the 32920 pair raises operating temperature and can trigger thermal runaway, while too little lets the rollers skid and smear the raceway under light load.
• Catalogue reference speed and limiting speed are different limits: the 3,400 r/min reference is a thermal criterion under load, while the 4,300 r/min limiting value is the mechanical ceiling — observe both.
• The 147/204 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 32920 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 32920 designation when purchasing and match the execution to the mounting arrangement.