Overview
The SMC CDM2D25-50Z pneumatic cylinder is a compact, double-acting unit from SMC’s renowned CM2 series. Manufactured in Japan by SMC, the world’s largest producer of pneumatic automation components, this cylinder combines proven reliability with space-efficient design. The CDM2D25-50Z features a 25mm bore and 50mm stroke configuration, making it ideal for applications requiring precise linear motion control in confined spaces.
Key Features
- Double-Acting Design: Powered movement in both extend and retract directions for responsive control
- Compact Form Factor: Optimized dimensions reduce mounting footprint in tight installation spaces
- 25mm Bore / 50mm Stroke: Standardized dimensions compatible with SMC mounting brackets and accessories
- Smooth, Low-Friction Operation: Precision rod seals and internal guides minimize stick-slip at low speeds
- Durable Construction: Rod seal and scraper design resists dust and contaminants in machine tool and industrial environments
Technical Specifications
- Bore Diameter: 25 mm
- Stroke Length: 50 mm
- Cylinder Type: Double-Acting, Single Rod
- Series: CM2 (CDM2)
- Maximum Operating Pressure: 1.0 MPa (10 bar / 145 psi)
- Minimum Operating Pressure: Refer to SMC Best Pneumatics catalog for low-speed performance details
- Port Type: M5 or M5 × 0.8 (verify with SMC datasheet)
- Operating Temperature Range: 0 to 50 °C (standard conditions)
- Mounting Bracket: Compatible with SMC standard foot and flange kits
- Construction: Die-cast aluminum body with hardened rod
Typical Applications
- Machine Tool Automation: Indexing, clamping, and part positioning with coolant mist resistance
- Assembly Equipment: Automated assembly lines requiring compact actuation
- Food & Beverage Processing: Water-resistant applications with splash protection
- Packaging Machinery: High-speed cycle indexing and product transfer
- Industrial Lifting & Handling: Vertical and horizontal load positioning with controlled motion
Compatibility & Replacements
Compatible With
- SMC standard pneumatic valve manifolds (5-port, 2-position solenoid valves)
- Industrial compressed air systems operating at 1.0 MPa (10 bar) nominal
- SMC mounting brackets, feet, flanges, and clevis rod-end kits
- Pneumatic auto switch sensors (D-A3C, D-A9, D-M9 types compatible with CM2 series)
- Pneumatic tubing: M5 and M5 × 0.8 (standard quick-disconnect fittings)
Replaces / Drop-In Replacement For
- Verify exact replacement compatibility with SMC Best Pneumatics catalog or technical support, as many variants exist in the CM2 family
- Common predecessor models in the CDM series may have different port configurations; consult SMC documentation before substitution
Works With
- Pneumatic Control Platforms: SMC solenoid valves, proportional directional control valves, and manual flow controls
- Automation Sequences: Ladder logic, function-block, and sequential control programs via external valve switching
- Communication Protocols: No onboard electronics; compatible with standard industrial air supply systems (filtration, regulation, lubrication recommended)
- Safety Systems: Integrates with pneumatic safety circuits and emergency stop logic












