
SMC CD85N2525CB (CD85N25-25C-B) - Mini Air Cylinder, 25mm Bore, 25mm Stroke
SMC CD85N2525CB Mini Air Cylinder — 25 mm bore, 25 mm stroke, air cushion, band-mount auto switch type. SMC CD85N25-25C-B is a C85 series ISO 6432 mini air cylinder, double acting, single rod, with a 25 mm bore and 25 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. The C suffix specifies air cushion in place of the standard rubber bumper, and the B suffix specifies band-type auto switch mounting. Per the official SMC C85/C75 catalog, the minimum stroke with air cushion is 25 mm, so this 25 mm stroke is exactly at the permitted minimum for the air-cushion option, and 25 mm is a listed standard stroke for the 25 mm bore. 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 0.97 J with air cushion, 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: CD85N25-25C-B · SKU: CD85N2525CB
CD85N25-25C-B Applications
This short-stroke cushioned cylinder suits compact clamping, indexing, ejecting and gate-actuation duties on packaging lines, assembly fixtures and small material-handling stations. The air cushion decelerates the piston at end of stroke, cutting impact noise and extending seal life where cycle rates are high. The built-in magnet lets band-mounted auto switches confirm rod position for interlocks and PLC sequencing. The integrated clevis head cover simplifies pivoting installations in tight machine frames.
CD85N25-25C-B Specifications
| Brand | SMC | Manufacturer Part No. | CD85N25-25C-B |
| Series | C85 | Type | Mini Air Cylinder, ISO 6432 Standard |
| Action | Double acting, single rod | Bore | 25 mm |
| Stroke | 25 mm | Cushion | Air cushion (C) |
| Built-in Magnet | Yes (D) | Head Cover Type | N: Basic (integrated clevis) |
| Auto Switch Mounting Type | B: Band mounting | Fluid | Air |
| Proof Pressure | 1.5 MPa | Max. Operating Pressure | 1.0 MPa |
| Min. Operating Pressure | 0.05 MPa | Piston Speed | 50 to 1500 mm/s |
| Allowable Kinetic Energy | 0.97 J (air cushion) | Port Size | G1/8 |
| Piston Rod Diameter | 10 mm | Rod End Thread | M10 x 1.25 |
| Lubrication | Not required (non-lube) | Ambient and Fluid Temperature | -20 to 80 C (without auto switch), -10 to 60 C (with auto switch) |
| Standard | ISO 6432, CETOP RP52P |
CD85N25-25C-B Datasheet & Manual
Download Datasheet & ManualSMC CD85N2525CB · PDF · Official SMC documentTrusted by




