
SMC CDQ2B4025DCZ (CDQ2B40-25DCZ) - Compact Air Cylinder, 40mm Bore, 25mm Stroke
SMC CDQ2B4025DCZ Compact Air Cylinder — 40 mm bore, 25 mm stroke, Rc 1/8 port thread (blank symbol), double acting with rubber bumper (C body option). SMC CDQ2B40-25DCZ is a CQ2-Z series compact air cylinder with a 40 mm bore and a 25 mm stroke. The B mounting symbol denotes the through-hole / head-end-tapped body, and the D prefix indicates a built-in auto switch magnet, so D-M9 series solid state and reed auto switches can be fitted in any of the four auto switch mounting grooves (Z). Ports are Rc 1/8 (blank port thread symbol). The C body option adds a rubber bumper at both ends, raising allowable kinetic energy for the 40 mm bore from 0.26 J to 0.52 J. The cylinder is double acting, single rod, with a rod end female thread (M8 x 1.25). Proof pressure is 1.5 MPa, maximum operating pressure 1.0 MPa, piston speed 50 to 500 mm/s, non-lube. Theoretical output at 0.5 MPa is 628 N extending and 528 N retracting. Basic mass is 348 g.
MPN: CDQ2B40-25DCZ · SKU: CDQ2B4025DCZ
CDQ2B40-25DCZ Applications
The rubber bumper version is chosen where the cylinder runs at higher speed or moves a heavier payload and end-of-stroke impact must be absorbed, doubling allowable kinetic energy and cutting noise and shock loading on the machine frame. Typical uses include conveyor stoppers and diverters, clamping and lifting in welding and assembly jigs, indexing pushers and pick-and-place tooling. The built-in magnet allows D-M9 auto switches to confirm both end positions for PLC interlocking on packaging, automotive and general factory automation equipment.
CDQ2B40-25DCZ Specifications
| Brand | SMC | Manufacturer Part No. | CDQ2B40-25DCZ |
| Series | CQ2 (CQ2-Z) | Bore | 40 mm |
| Stroke | 25 mm | Port Thread | Rc 1/8 |
| Action | Double acting, single rod | Mounting | Through-hole / both ends tapped (B) |
| Built-in Magnet | Yes (D) - auto switch capable, 4 mounting grooves | Body Option | C - with rubber bumper |
| Rod End | Female thread M8 x 1.25 | Allowable Kinetic Energy | 0.52 J (with rubber bumper) |
| Fluid | Air | Proof Pressure | 1.5 MPa |
| Maximum Operating Pressure | 1.0 MPa | Piston Speed | 50 to 500 mm/s |
| Ambient and Fluid Temperature | -10 to 60 degrees C (with auto switch magnet) | Lubrication | Not required (non-lube) |
| Theoretical Output at 0.5 MPa | 628 N (out) / 528 N (in) | Weight | 348 g |
CDQ2B40-25DCZ Datasheet & Manual
Download Datasheet & ManualSMC CDQ2B4025DCZ · PDF · Official SMC documentTrusted by




