CEMA Screw-Conveyor Shafts
Replacement CEMA screw-conveyor coupling, drive, and end shafts, drilled to the standard coupling-bolt pattern.
CEMA (ANSI/CEMA 300) fixes the shaft diameter, coupling-bolt size, and hole pattern by size, so a card matched to your shaft diameter and type fits any screw pipe of that size. Pick a size below to load it into the configurator with the transverse coupling holes (and, on drive shafts, the ANSI B17.1 keyseat) pre-dimensioned. Three types are offered: coupling shafts that join two screw sections over a hanger bearing (2-bolt couplings at both ends), drive shafts that take the reducer at the head end (2-bolt pipe coupling + a keyseat), and end/tail shafts. Default C-1045 cold-drawn, configurable to 304/316 stainless. You stay in control of material, surface finish, tolerance class, and any added features. The drawing's title block stamps the source cross number, and we confirm full geometry against your conveyor or old shaft before cutting.
3-bolt couplings, close-coupling and hanger-end shafts, and the 1 and 1-1/2 inch sizes aren't on these cards yet, they're on our roadmap. Need one now? Send us a print or the old shaft and we'll quote it directly.
CEMA screw-conveyor shaft sizes
Replacement CEMA screw-conveyor shafts, drilled to the standard coupling-bolt pattern. Coupling shafts (2-bolt couplings at both ends, over a hanger bearing), drive shafts (2-bolt pipe coupling + ANSI B17.1 keyseat for the reducer), and end/tail shafts, in the standard 2, 2-7/16, 3, and 3-7/16 inch sizes. Shaft diameter, overall length, coupling-bolt size, hole diameter, and hole spacing are fixed by CEMA size and published per part; click a card to load a configurable starting point. Crosses the Martin Sprocket CC/DS/CE and KWS CS/DS series.