SMC CD85N2530B (CD85N25-30-B) - Mini Air Cylinder, 25mm Bore, 30mm Stroke

SMC CD85N2530B Mini Air Cylinder — 25 mm bore, 30 mm intermediate stroke, rubber bumper, band-mount auto switch type. SMC CD85N25-30-B is a C85 series ISO 6432 mini air cylinder, double acting, single rod, with a 25 mm bore and 30 mm stroke. The CD85N prefix denotes a built-in magnet (D) for auto switch mounting and an N head cover, the basic type with integrated clevis. No C suffix is present, so the cylinder uses the standard rubber bumper rather than air cushion, and the B suffix specifies band-type auto switch mounting. Note: 30 mm is not one of the listed standard strokes for the 25 mm bore (10, 25, 40, 50, 80, 100, 125, 160, 200, 250, 300 mm); it is an intermediate stroke, which the official SMC C85/C75 catalog explicitly permits under note *2, Other strokes are available on request. It is well within the 1000 mm maximum stroke for this bore, so the configuration is valid. Official specifications for the 25 mm bore: fluid air, proof pressure 1.5 MPa, maximum operating pressure 1.0 MPa, minimum operating pressure 0.05 MPa, piston speed 50 to 1500 mm/s, allowable kinetic energy 0.4 J with rubber bumper, port size G1/8, piston rod diameter 10 mm, rod end thread M10 x 1.25. Non-lube operation. Ambient and fluid temperature -20 to 80 degrees C without auto switch, -10 to 60 degrees C with auto switch. Conforms to ISO 6432 and CETOP RP52P.

MPN: CD85N25-30-B · SKU: CD85N2530B

CD85N25-30-B Applications

A non-standard 30 mm stroke makes this cylinder a drop-in for retrofit and machine-rebuild work where an existing linkage travel must be matched exactly rather than rounded to a catalog stroke. Typical duties include short-travel clamping, part ejection, diverter gates and pusher mechanisms on packaging, food and light assembly equipment. The rubber bumper handles moderate cycle speeds, and the built-in magnet supports band-mounted auto switches for end-of-stroke confirmation in PLC-controlled sequences.

CD85N25-30-B Specifications