32030-SKF 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 32030-SKF model number is decoded

The SKF 32030 X is a 150×225×48 mm single-row tapered roller bearing — the low-friction section entry in the 32000 series, with an asymmetric raceway cut for thrust capacity and separable mounting.Reading the designation: the leading 3 marks a single-row tapered roller bearing, the 20 is the ISO 355 diameter/width series (low-friction section), and the last two digits encode the 150 mm bore; the 225 mm OD and 48 mm width follow the ISO 355 general plan. In SKF suffix language a bare 32030 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. With C 456 kN and C0 655 kN, the 32030 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 2,600 r/min. Specify pairs rather than single units wherever thrust reverses: the tapered contact of 32030 generates an induced axial load under radial force, and an unpaired bearing on a reversing shaft will run slack and fret its seat. Cross-section geometry: the 37.5 mm half-section ((225−150)/2) of this 32000-series unit places the roller large-end pitch diameter at roughly 187 mm, and the 48 mm axial width is split between cone (26 mm) and cup rib (22 mm) — a geometry that sets the contact angle and, with the 6400 g rotating cone mass, the critical speed at which cage-roller imbalance begins.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 150 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 320 series at 150 mm bore (225×48 mm) is the low-friction, higher-speed section; it carries less thrust than a 30230 of the same bore, so verify the axial load share before swapping.
• The tapered contact angle creates an induced axial load under pure radial force; include it in the 32030 rating calculation (and account for it in both bearings of a pair) or the unloaded bearing skids its rollers.
• O (back-to-back) pairs are stiffer against moments, X (face-to-face) pairs tolerate misalignment and thermal growth better; choosing the arrangement from the 2D drawing rather than the actual shaft thermal expansion is a common 32030 mounting error.
• The pressed-steel cage is rated for standard industrial service; sustained running above the limiting speed or with degraded lubricant wears the cage pockets — inspect the cage at every relubrication interval.
• The 456/655 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 32030 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 32030 X designation when purchasing and match the execution to the mounting arrangement.