Overview
The SMC CDM2B25-50 is a standard double-acting pneumatic cylinder from SMC’s CM2 series. This compact cylinder features a 25mm bore diameter and 50mm stroke length, designed for reliable linear motion control in industrial automation. The unit is rated for a maximum operating pressure of 1.0 MPa (145 psi), making it suitable for light to medium-duty pneumatic applications requiring precise positioning and force generation.
Key Features
- Double-acting design enables power in both extension and retraction strokes
- Built-in magnet for compatibility with proximity sensors and auto-switches
- Double-side bossed (B) mounting with rod-end male thread Rc1/8″ connections
- Rubber bumper included for shock absorption at end-of-stroke
- Compact round body design ideal for space-constrained installations
- Operating temperature range: -10°C to +70°C for standard industrial environments
Technical Specifications
Bore Diameter: 25 mm
Stroke Length: 50 mm
Maximum Operating Pressure: 1.0 MPa (145 psi)
Minimum Operating Pressure: 0.05 MPa (7.3 psi)
Actuator Type: Double-acting pneumatic cylinder
Mounting Style: Double-side bossed (B)
Port Thread Type: Rc (male thread, Rc1/8″)
Piston Speed: 50–750 mm/s (adjustable via flow control)
Operating Temperature: -10°C to +70°C
Design Features: Built-in magnet, rubber bumper
Typical Applications
- Industrial machinery automation and material handling systems
- Packaging equipment requiring precise linear motion
- Clamp and hold operations in manufacturing processes
- Assembly line positioning and alignment tasks
- Light-duty pressing and forming applications
- Machine tool automation and workpiece manipulation
Compatibility & Replacements
Compatible With
- SMC CM2 series pneumatic systems and valve networks
- Standard ISO 5597 double-acting cylinder mounting interfaces
- Proximity sensors and magnetic auto-switches for position feedback
- Pneumatic control valves with Rc-threaded ports (1/8″ NPT equivalent)
- Industrial PLC and automation controller systems
Replaces / Drop-In Replacement For
- Other SMC CDM2B25-50 units (identical bore and stroke specifications)
- Compatible with equivalent CM2 series cylinders from the same generation
- Verify mounting interface and port thread configuration before replacement
Works With
- Pneumatic directional control valves (solenoid or manual)
- Flow control valves and needle valves for speed adjustment
- SMC auto-switches (CDM2-Z series compatible models)
- Proximity sensors with magnetic ring detection
- Industrial automation software and control systems supporting pneumatic I/O





