575-572 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch 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. 8.2 inch 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 575-572 model number is decoded

Dimensional interchange map: within the 57500 series at 76.2 mm bore, the 139.992 mm OD and 36.512 mm width are fixed by the ISO 355 plan, so any same-code bearing from another brand shares the mounting envelope; the 31.9 mm section height distinguishes this family from a 302 or 322 of the same bore, and the 2450 g mass is the minimum—sealed or snap-ring executions add rotating weight above that catalogue baseline. From a specification standpoint the 572 cup is the controlling half of 575 for housing design — it sets the 139.992 mm OD and the outer abutment diameter — while the 575 cone controls shaft fit at the 76.2 mm bore; the 36.512 mm width is the result of the two together.For a 76.2 mm shaft carrying combined load, SKF lists 575 under catalogue execution SKF 575/572: one open single-row tapered roller bearing in the inch 575-series.On the SKF nameplate, 575 denotes a matched cone-and-cup pair: the designation is not a single number but a cone reference and cup reference joined by a slash, with the 575-series marking the dimensional series. In SKF suffix language a bare 575 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. The 31 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.23 C0/C balance shows this execution is tuned to thrust-heavy combined loads rather than pure radial running. A single 575 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Mount the 76.2 mm bore 575 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 575-series inch series at 76.2 mm bore (139.992×36.512 mm) follows the Timken cone/cup convention; substitutions must match both the cone and cup reference exactly — interchanging with another series or a metric 3xxxx bearing of the same bore changes OD, width and contact angle, so re-run the pair setting and shoulder-diameter checks before swapping.
• At the 227 kN rating of 575, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 4,500 r/min speed end and heavier preload only where moment stiffness dominates.
• At the 227 kN rating of 575, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 4,500 r/min speed end and heavier preload only where moment stiffness dominates.
• The 575 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 227/280 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 575 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 575/572 designation when purchasing and match the execution to the mounting arrangement.