Overview
The Bellofram 518-036-551 is a pneumatic flange mount air cylinder designed for industrial automation, machine control, and process actuation. Marsh Bellofram diaphragm air cylinders are actuators made from elastomers, engineered metals and fabrics, and require no lubrication while being virtually frictionless and economical. The flange mount configuration provides secure, direct attachment to manifolds and valve assemblies, making this unit suitable for OEM equipment and retrofit applications.
Key Features
- Low friction, no lubrication, low leakage, wide temperature variations and low total cost of ownership
- Flange mount design for direct manifold or block integration
- Ground, polished and hard-chrome plated steel rods with sintered bronze, molybdenum disulphite impregnated bearings
- Suitable for lifting, clamping, pushing, coining, turning and other linear force or actuation motions
- Field-proven rolling diaphragm design for reliable dynamic sealing
- New, open-box condition with immediate availability
Technical Specifications
The Bellofram 518-036-551 delivers precise pneumatic actuation with the following characteristics:
- Bore Diameter: 2.3 inches
- Stroke Length: 1.8 inches
- Mounting Style: Flange mount
- Actuator Type: Single-acting pneumatic cylinder
- Rod Configuration: Single rod
- Manufacturer: Marsh Bellofram Group of Companies
- Condition: New, open box
Typical Applications
Bellofram diaphragm air cylinders can be used to provide lifting, clamping, pushing, coining, turning and other linear force or actuation motions in many applications. The 518-036-551 is commonly deployed in:
- Packaging and labeling machinery
- Material handling systems and conveyors
- Industrial pressing and forming equipment
- Production line actuation and control
- OEM pneumatic automation systems
- Machine tool actuation and clamping
Compatibility & Replacements
Compatible With
- Standard pneumatic control systems (0–100 PSI, 0–150 PSI)
- Pneumatic directional control valves with matching port sizes
- Pneumatic manifold blocks and subplates with flange mount interfaces
- Industrial compressed air networks and regulators
- Pneumatic pressure switches and flow control valves
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or equipment manufacturer before ordering. The Bellofram 518-036-551 may replace other single-acting pneumatic cylinders with matching bore (2.3″), stroke (1.8″), and flange mount interfaces.
Works With
- ISO 4401 (CETOP-05) manifold interfaces (if applicable)
- Pneumatic directional control systems
- Standard compressed air supply (filtered and regulated)
- Pneumatic pressure and flow monitoring equipment
- Industrial PLC and automation controllers with pneumatic I/O modules
















