32928 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 32928 model number is decoded

SKF 32928 (SKF 32928) is the very-light thin section tapered roller choice for a 140 mm shaft — one row of tapered rollers on an asymmetric raceway inside the 190×32 mm ISO 355 envelope.On the SKF nameplate, 32928 follows the ISO 355 convention: 3 for the tapered-roller type, 29 for the very-light thin section, final digits 28 for the 140 mm bore. 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. With C 252 kN and C0 390 kN, the 32928 pair-sizing check is dominated by the axial share: keep the equivalent load P below the rating at the required L10, remembering one bearing alone cannot cover reversing thrust at 3,000 r/min. For a 140 mm shaft the usual cone seat is m6 with an H7 housing when the inner ring rotates; arrange two 32928 bearings as a set for two-direction location and set clearance from the load diagram, never from assembly feel. Journal and housing interface: the 140 mm bore takes a m6 shaft seat (upper deviation ~0.280 mm for this diameter range) and the 190 mm outside diameter pairs with an H7 housing bore tolerance band of 190.000/190.020 mm; the 32 mm width defines the shoulder depth, and the 2550 g cone-plus-cup assembly is the dead load on the shaft during thermal expansion calculations.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 140 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 329 series at 140 mm bore (190×32 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 30228 of the same bore — confirm the L10 life and minimum axial load before choosing it.
• A single 32928 cannot locate the shaft axially in both directions; mounting it singly on a reversing-thrust shaft leaves one direction uncontrolled — always use an O or X matched pair for bidirectional location.
• A single 32928 cannot locate the shaft axially in both directions; mounting it singly on a reversing-thrust shaft leaves one direction uncontrolled — always use an O or X matched pair for bidirectional location.
• The 32928 shares its ISO 355 envelope with other tapered bearings of the same code but is not a drop-in replacement for a ball bearing: it cannot run effectively under pure radial load without a minimum axial load, and a deep-groove bearing cannot replace its combined-load duty.
• The 252/390 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 32928 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 32928 designation when purchasing and match the execution to the mounting arrangement.