
SMC CDG1BN40125Z (CDG1BN40-125Z) - Round Body Air Cylinder, 40mm Bore, 125mm Stroke
SMC CDG1BN40125Z Round Body Air Cylinder — 40mm Bore, 125mm Stroke. SMC CG1-Z series round body air cylinder, double acting, single rod, with built-in magnet (CD prefix) for auto switch mounting. Basic (B) mounting, rubber bumper cushion (N), male rod end. 40 mm bore, 125 mm stroke, 16 mm piston rod diameter, M14 x 1.5 rod end thread, Rc 1/8 cylinder port. Fluid air, non-lube. Maximum operating pressure 1.0 MPa, minimum operating pressure 0.05 MPa, proof pressure 1.5 MPa. Piston speed 50 to 1000 mm/s. Allowable kinetic energy 1.20 J with rubber bumper and male rod end. Ambient and fluid temperature -10 to 70 C without auto switch, -10 to 60 C with auto switch. Stroke length tolerance +1.4/0 mm. Rod cover, tube cover and piston in hard anodised aluminium alloy; hard chrome plated carbon steel piston rod. Rod end nut supplied as standard.
MPN: CDG1BN40-125Z · SKU: CDG1BN40125Z
CDG1BN40-125Z Applications
A round body pneumatic actuator for machine builders needing a mid length stroke in a small envelope. The 40 mm bore with 125 mm stroke suits pushing, indexing, ejecting and gate operation on packaging and assembly lines. Basic mounting allows the cylinder to be fixed through the covers, and the built-in magnet supports band mounted D-M9 series auto switches for stroke end detection. Rubber bumpers cushion the piston at both ends of travel for quieter, lower shock operation.
CDG1BN40-125Z Specifications
| Brand | SMC | Manufacturer Part No. | CDG1BN40-125Z |
| Series | CG1 (CG1-Z) | Bore | 40 mm |
| Stroke | 125 mm | Action | Double Acting, Single Rod |
| Mounting | Basic (B) | Cushion | Rubber Bumper (N) |
| Rod End | Male Thread M14 x 1.5 | Piston Rod Diameter | 16 mm |
| Port Size | Rc 1/8 | Built-in Magnet | Yes (auto switch capable) |
| Fluid | Air | Max Operating Pressure | 1.0 MPa |
| Min Operating Pressure | 0.05 MPa | Proof Pressure | 1.5 MPa |
| Piston Speed | 50 to 1000 mm/s | Allowable Kinetic Energy | 1.20 J |
| Ambient and Fluid Temperature | -10 to 70 C (without auto switch), -10 to 60 C (with auto switch) | Lubrication | Not required (Non-lube) |
CDG1BN40-125Z Datasheet & Manual
Download Datasheet & ManualSMC CDG1BN40125Z · PDF · Official SMC documentTrusted by




