528R-522 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 528R-522 model number is decoded

With C 184 kN and C0 190 kN, the 528R 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 6,700 r/min. A single 528R 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. Cross-section geometry: the 27.8 mm half-section ((101.6−46.038)/2) of this 52800-series unit places the roller large-end pitch diameter at roughly 73 mm, and the 34.925 mm axial width is split between cone (19 mm) and cup rib (16 mm) — a geometry that sets the contact angle and, with the 1300 g rotating cone mass, the critical speed at which cage-roller imbalance begins. Within the 525-series tables, 528 R appears in several rows because SKF lists multiple cup options for the same cone. 528R is the 522 variant, with 101.6 mm OD and 34.925 mm width; neighbouring rows on the same cone differ only in the cup but are separate orderable bearings.Ordering number SKF 528 R/522 in SKF catalogue PUB BU/P1 17000 denotes a single-row tapered roller bearing for a 46.038 mm shaft, inch series, with an open pressed-steel-cage execution and one-direction axial capacity.The 525-series series assigns 46.038 mm bore, 101.6 mm OD and 34.925 mm width to 528R; the cone and cup references are not interchangeable with other inch-series pairs even when the bore matches, because the cup profile and rib geometry are series-specific. In SKF suffix language a bare 528R is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 46.038 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight 528R pair heats, loses setting control and smears the roller-rib contact.
• The 525-series inch series at 46.038 mm bore (101.6×34.925 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.
• Setting is a design value, not an assembly feel: excessive preload in the 528R pair raises operating temperature and can trigger thermal runaway, while too little lets the rollers skid and smear the raceway under light load.
• When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 528R pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• Catalogue reference speed and limiting speed are different limits: the 5,600 r/min reference is a thermal criterion under load, while the 6,700 r/min limiting value is the mechanical ceiling — observe both.
• The 184/190 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 528R (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 528 R/522 designation when purchasing and match the execution to the mounting arrangement.