C4026-2CS5V-GEM9 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 C4026-2CS5V-GEM9 model number is decoded

C 4026-2CS5V/GEM9 is a CARB toroidal roller bearing to ISO 15: a single row of long, symmetrical barrel-shaped rollers between guide flanges, sized 130×200×69 mm, as listed in SKF catalogue PUB BU/P1 17000 ch. 10.1. In C 4026-2CS5V/GEM9 the 40 dimension series fixes the 200 mm OD and 69 mm width around the 130 mm bore (the bore is written directly after the slash (no bore code)); the suffix 2CS5V/GEM9 then selects the cylindrical bore for direct shaft fitting, 2CS5V/GEM9 sealed full-complement execution with annular groove. The cylindrical 130 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 130×200×69 mm are identical — only the mounting method changes. Float capacity is a selection criterion: the catalogue lists the permissible axial displacement (s) for the 69 mm wide set; size the free-end housing so thermal growth stays within it, not just inside the overall width. Mounting: slide the bearing onto the 130 mm seat or heat it (max 120 °C) and seat it square; never press through the 69 mm roller set, and leave the free-end housing shoulder clear so axial float is unrestricted.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 130 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.
• 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 4026-2CS5V/GEM9 must float; the two are designed to be used as a pair.
• Never use C 4026-2CS5V/GEM9 as the locating bearing: it carries no axial load by design — the arrangement needs a separate locating spherical, tapered or angular bearing facing the thrust.
• Tapered-bore K executions mount on adapter sleeves (1:12) and K30 on withdrawal sleeves (1:30) — the 130 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
• The 550/830 kN ratings and 7500 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.