C30-800-KMB-AOH30-800 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves) · extracted 2026-09-29

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves); 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 C30-800-KMB-AOH30-800 model number is decoded

Mounting C30-800-KMB-AOH30-800 at this size: warm the bearing, drive the withdrawal sleeve to its marked travel on the 750 mm seat and verify the residual radial clearance of the 800 mm CARB bearing before the unit cools — the marked travel is the setting record for the next overhaul. Housing side of C30-800-KMB-AOH30-800 is conventional: a 1150 mm H7 bore takes the CARB outer ring, which is free to slide axially in the housing — the toroidal raceway handles the misalignment and the sleeve side handles the location on the 750 mm shaft.In SKF catalogue PUB BU/P1 17000, C30-800-KMB-AOH30-800 appears as bearing C 30/800 KMB + withdrawal sleeve AOH 30/800 — the large-size execution of the CARB non-locating principle, delivered as one assembly weighing 1060 kg.On the SKF nameplate, C30-800-KMB-AOH30-800 reads as two catalogued components: the CARB bearing C 30/800 KMB with its 800 mm tapered (K) bore, and the withdrawal sleeve AOH 30/800 whose seat diameter matches that bore — the sleeve number encodes the bearing bore, never the 750 mm shaft size. The AOH 30/800 execution defines the fit on the 750 mm cylindrical seat by sleeve travel rather than locknut torque; the mounting procedure records that travel, because the running clearance of the CARB bearing is set by the same taper. Speed note: for C30-800-KMB-AOH30-800 the CARB table lists 360 r/min reference and 480 r/min limiting speed the permissible speed of the unit is bounded by the CARB bearing's own catalogue values and by the sleeve-seat interface; sleeve-mounted units run marginally cooler-balanced because the sleeve adds a thermal resistance at the 750 mm seat.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Do not re-use a sleeve that shows taper scuffing: a scratched cone changes the travel-to-clearance relationship of the whole C30-800-KMB-AOH30-800 unit — replace the sleeve with the bearing.
• Protect the 750 mm seat: sleeve bore corrosion or seat ovality shows up later as sleeve creep and fretting; inspect and measure the seat at every dismounting of C30-800-KMB-AOH30-800.
• Keep the pair complete in stores: storing bearing C 30/800 KMB and sleeve AOH 30/800 on different shelves is how taper-mismatch accidents start — store the unit as received under one part number.
• The 9300/19300 kN ratings are SKF catalogue 17000 values for the CARB bearing; 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.
• Quote the full unit designation SKF C 30/800 KMB + AOH 30/800 when purchasing — bearing and sleeve execution letters are part of the order number and define the matched taper pair.