
SMC CDM2B20100Z (CDM2B20-100Z) - Air Cylinder, 20 mm Bore, 100 mm Stroke
SMC CDM2B20100Z Air Cylinder — 20 mm bore, 100 mm stroke, basic (double-side bossed) mounting, built-in magnet, rubber bumper. SMC CDM2B20-100Z is a CM2-Z series round body air cylinder, double acting, single rod, with a built-in magnet. Decoded per the official SMC CM2-Z how-to-order: CDM2 = air cylinder with built-in magnet (auto switch capable); B = basic mounting style (double-side bossed); 20 = 20 mm bore; 100 = 100 mm stroke (a standard stroke for the 20 mm bore, which offers 25, 50, 75, 100, 125, 150, 200, 250 and 300 mm); Z = CM2-Z series suffix. No cushion symbol precedes the Z (A = air cushion), so the cylinder is supplied with the standard rubber bumper; the port thread type is the default Rc (TN = NPT, TF = G) and the rod end is the default male thread (F = female). No auto switch is specified, so the cylinder ships as a built-in magnet type ready for D-M9 series switches. Official CM2 specifications: type pneumatic; action double acting, single rod; fluid air; proof pressure 1.5 MPa; maximum operating pressure 1.0 MPa; minimum operating pressure 0.05 MPa; ambient and fluid temperature -10 to 70 C without auto switch (-10 to 60 C with auto switch); lubrication not required (non-lube); piston speed 50 to 750 mm/s; allowable kinetic energy 0.27 J at 20 mm bore with rubber bumper and male thread; stroke length tolerance +1.4/0 mm; port size Rc 1/8; maximum manufacturable stroke 1000 mm at 20 mm bore. Intermediate strokes are available in 1 mm increments.
MPN: CDM2B20-100Z · SKU: CDM2B20100Z
CDM2B20-100Z Applications
The CM2-Z is SMC's general-purpose round body cylinder and the default choice for mid-force linear motion on conveyors, indexers and assembly stations. At 20 mm bore it delivers roughly 190 N of push at 0.6 MPa, and the 100 mm stroke suits pushers, part transfer, stoppers, clamping and lid pressing. The basic double-side bossed body mounts with the supplied mounting nut or via optional foot, flange, clevis and trunnion brackets. The built-in magnet allows D-M9 auto switches to be added for stroke-end position confirmation.
CDM2B20-100Z Specifications
| Brand | SMC | Manufacturer Part No. | CDM2B20-100Z |
| Bore | 20 mm | Stroke | 100 mm |
| Series | CM2-Z | Type | Air Cylinder (Round Body, Standard) |
| Action | Double Acting, Single Rod | Mounting | B - Basic (Double-Side Bossed) |
| Built-in Magnet | Yes (CDM2) | Cushion | Rubber Bumper |
| Rod End | Male Thread | Port Thread Type | Rc |
| Port Size | Rc 1/8 | Fluid | Air |
| Proof Pressure | 1.5 MPa | Max Operating Pressure | 1.0 MPa |
| Min Operating Pressure | 0.05 MPa | Ambient and Fluid Temperature | -10 to 70 C without auto switch; -10 to 60 C with auto switch |
| Piston Speed | 50 to 750 mm/s | Allowable Kinetic Energy | 0.27 J (rubber bumper, male thread) |
| Lubrication | Not required (non-lube) | Stroke Length Tolerance | +1.4 / 0 mm |
| Max Manufacturable Stroke | 1000 mm |
CDM2B20-100Z Datasheet & Manual
Download Datasheet & ManualSMC CDM2B20100Z · PDF · Official SMC documentTrusted by




