Overview
The SMC CDM2D25-50 is a double-acting pneumatic cylinder from SMC’s proven CM2 series, engineered for reliable actuation in industrial automation. This model combines a 25mm bore with a 50mm stroke in a compact package, featuring integrated auto-switch technology for position sensing without external sensor hardware. The CDM2D25-50 delivers smooth, low-friction operation in demanding manufacturing and machine tool environments.
Key Features
- Double-acting design with single rod for balanced force delivery
- Integrated auto-switch (CDM2-Z series) for automatic end-position detection
- Double clevis mounting (D) for rigid, articulated installations
- Built-in air cushioning for smooth deceleration at end of stroke
- Rod-end male threads (Rc1/8″) for direct threaded port connections
- Excellent dust resistance and corrosion protection suitable for coolant exposure
Technical Specifications
- Bore Diameter: 25 mm (B25)
- Stroke Length: 50 mm (S50)
- Max Operating Pressure: 1.0 MPa (145 psi)
- Min Operating Pressure: 0.05 MPa (0.7 psi)
- Piston Speed Range: 50–750 mm/s
- Mounting Style: Double clevis (D)
- Port Type: Rc1/8″ male threaded (rod end)
- Air Cushion: Built-in (both ends)
- Operating Temperature: –10 to +70 °C
- Material: Aluminum cylinder body with chrome-plated rod
- Auto Switch: Integrated position sensor (CDM2 series standard)
Typical Applications
- Machine tool clamping and work-holding fixtures
- Transfer machine actuators and positioning systems
- Assembly line component placement and alignment
- Press and stamping equipment motion control
- Injection molding machine mold opening/closing
- CNC machining centers and automated lathes
Compatibility & Replacements
Compatible With
- SMC logic controllers and pneumatic valve blocks (manifold mount)
- Standard ISO 4401-05 (NG05) solenoid directional control valves
- Rc1/8″ threaded pneumatic tubing and quick-disconnect fittings
- Compressed air systems operating at 0.5–1.0 MPa (5–10 bar)
- Industrial automation platforms supporting 24 VDC auto-switch input
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Direct replacement models depend on specific port configuration and auto-switch wiring. The CDM2D25-50 is part of the CM2 series family and may interchange with variant models such as CDM2D25-50TZ, CDM2D25-50W, or CDM2D25-50K depending on seal material and mounting bracket specifications. Consult SMC application notes or your OEM documentation for exact interchangeability.
Works With
- Valve Interface: ISO 4401 cavity (NG05) manifold, Rc1/8″ threaded ports
- Control Systems: 24 VDC auto-switch signal output to PLC/controller inputs
- Pneumatic Networks: Compressed air at 0.5–1.0 MPa; no special gas or hazardous duty certification
- Tubing Standards: Metric or NPT quick-disconnects; standard polyurethane or nylon tubing
- Related SMC Products: SY3000/5000 series solenoid valves, AK/AJ filter-regulators, AE/AM mufflers
