
SMC CD85N1225SB (CD85N12-25S-B) - Mini Air Cylinder, 12mm Bore, 25mm Stroke
SMC CD85N1225SB Mini Air Cylinder — 12mm bore, 25mm stroke, single-acting spring return (S). SMC CD85N12-25S-B ISO 6432 round-body mini air cylinder. 12mm bore, 25mm stroke, single-acting spring return (S), single rod. Basic type (N) with integrated clevis. Built-in magnet (D) for auto switch mounting; band (B) auto switch mounting type. Conforms to ISO 6432 and CETOP RP52P. Max operating pressure 1.0 MPa; proof pressure 1.5 MPa. Ambient/fluid temperature -10 to 60 C (with auto switch). Piston speed 50 to 1500 mm/s. Spring returns the rod on exhaust for fail-safe retraction.
MPN: CD85N12-25S-B · SKU: CD85N1225SB
CD85N12-25S-B Applications
The CD85N12-25S-B single-acting spring-return cylinder is ideal where the rod must retract automatically when air is removed, giving fail-safe operation for clamping, holding, pressing and gating tasks. Its ISO 6432 C85 round body and built-in magnet allow direct auto switch sensing, and spring return simplifies control by needing only one air supply line.
CD85N12-25S-B Specifications
| Brand | SMC | Manufacturer Part No. | CD85N12-25S-B |
| Series | C85 | Standard | ISO 6432 / CETOP RP52P |
| Type | Single Acting, Spring Return, Single Rod | Bore | 12 mm |
| Stroke | 25 mm | Mounting | Basic type (N) |
| Auto Switch | Capable (Built-in magnet, Band mount) | Max Operating Pressure | 1.0 MPa |
| Proof Pressure | 1.5 MPa | Ambient/Fluid Temp | -10 to 60 C (with auto switch) |
| Piston Speed | 50 to 1500 mm/s |
CD85N12-25S-B Datasheet & Manual
Download Datasheet & ManualSMC CD85N1225SB · PDF · Official SMC documentTrusted by




