23972 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings) · extracted 2026-09-26

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings); 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 23972 model number is decoded

For a 360 mm shaft carrying heavy radial load with misalignment or deflection, SKF lists 23972 under catalogue execution 23972 CC/W33: two barrel-roller rows on a sphered outer raceway. Digit by digit, 23972 reads as bearing type 2 (spherical roller, two barrel-roller rows), dimension series 39, and bore reference 72 resolving to 360 mm; 480 mm OD and 90 mm width are the matching ISO 15 boundary values. The suffix chain reads CC (two pressed-steel cages with a floating guide ring between the roller rows) plus W33 (annular groove and three lubrication holes in the outer ring for relubrication); CCK/W33 is the 1:12 tapered-bore counterpart. Selection arithmetic: the C0/C ratio is about 1.89 (static 2750 kN against dynamic 1456 kN), typical of a spherical roller sized for heavy combined loads, and the 220 kN fatigue load limit Pu is the equivalent-load floor used in the life calculation. Mount with the spherical bearing's self-alignment in mind: it compensates ≈ 0.5–2.5° of misalignment depending on series, but the shaft and housing seats still set the datum — a rotating inner ring on a 360 mm shaft typically takes a m6 seat with an H7 housing bore.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 360 mm bore the ring mass makes cocking during mounting a real risk; guide the bearing square, confirm seat contact around the full circumference, and re-check the self-aligning swing after the housing cap is torqued down.
• The 23900-series series at 360 mm bore (480×90 mm) is the slim-OD envelope: it buys radial space but gives up capacity against a 222-series bearing of the same bore — confirm the L10 margin before downsizing into it.
• The 23972 shares its ISO 15 envelope across brands, but internal geometry differs — SKF load ratings in this row are 1456/2750 kN; another maker's same-size bearing may rate higher or lower, so do not interchange on envelope alone.
• The 46000 g mass and 90 mm width mean abutment faces must be square to the axis within the bearing's own P0 tolerance; a tilted spacer tilts the outer ring and concentrates load on one roller row of 23972.
• The 1456/2750 kN ratings are SKF catalogue values for this exact execution (23972 CC/W33); SKF can revise internal geometry without changing the order number, so keep the catalogue version (SKF catalogue PUB BU/P1 17000) with the specification and re-verify for critical drives.
• SKF lists several executions of 23972 (cylindrical bore as listed, tapered-bore 23972 CCK/W33 variant, plus sealed and vibrating-screen options in the same envelope); they are not interchangeable order numbers — quote the full 23972 CC/W33 designation when purchasing.