C4028-V bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings) · extracted 2026-09-27

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal 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 C4028-V model number is decoded

For long shafts that grow thermally, SKF supplies C 4028 V: the toroidal rollers allow the 140 mm inner ring to displace axially without induced thrust, while still accommodating shaft deflection like a spherical bearing. In C 4028 V the 40 dimension series fixes the 210 mm OD and 69 mm width around the 140 mm bore (code 28 × 5); the suffix V then selects the cylindrical bore for direct shaft fitting, full-complement V execution (no cage). The cylindrical 140 mm bore mounts directly on a machined seat; the outer ring takes a loose housing fit so the bearing can float axially. The same size is listed in both bore executions, and the boundary dimensions 140×210×69 mm are identical — only the mounting method changes. The 8600 g mass over the 140×210×69 mm envelope yields about 5.36 kN dynamic per millimetre of bore — the long toroidal rollers give this family its radial capacity density. After fitting, confirm the inner ring can be pushed axially by hand through the catalogue displacement range; a ring that will not slide means the position is locked and will preload in service.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 140 mm bore, shaft expansion is already measurable: calculate the required float inside the 69 mm wide bearing rather than assuming the free-end clearance is "enough" at operating temperature.
• Reference and limiting speeds are different limits: the catalogue lists no thermal reference speed for this full-complement/sealed execution, the limiting value is the mechanical ceiling; observe the reference under load unless the arrangement calculation says otherwise.
• The quoted 750/1220 kN ratings belong to this exact execution (C 4028 V); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
• Do not block the axial displacement in the drawing: housing covers, labyrinth rings and snap rings must leave the catalogue float (s) free, or the bearing silently becomes a poorly located fixed bearing.
• Envelope-identical spherical roller bearings (same ISO 15 d×D×B) are not drop-in equivalents — they locate the shaft axially, while C 4028 V must float; the two are designed to be used as a pair.
• The 750/1220 kN ratings and 8600 g mass are SKF catalogue values transcribed from ch. 10.1 of PUB BU/P1 17000 (PDF table page 862); mounting data — axial displacement (s) and seating details — appears in the running text because the structured record carries the boundary envelope only.