MDBB50-125Z: SMC Standard Cylinder, Your Reliable Drive Expert for Industrial Automation
2026-01-04
The MDBB50-125Z is a standard cylinder manufactured by Japan’s SMC Corporation, belonging to the MDBB series. Featuring a single-rod, double-acting structure, this cylinder is characterized by a large bore, strong thrust, and reliable operation. It is widely used in industrial automation control systems, providing robust linear drive solutions for equipment.
Core Product Advantages
- Large Bore for Powerful Output With a 50mm bore, it delivers strong thrust at standard working pressure (0.5 MPa), easily driving medium loads and meeting the power requirements of automated equipment.
- Built-in Magnetic Ring Design Equipped with a built-in magnetic ring (Z indicates magnetic-sensing type), it supports the installation of magnetic switches for real-time piston position detection. It offers high repeatability for positioning, facilitating seamless integration into automated control systems.
- Basic Mounting Style It adopts a basic mounting style (B indicates), offering flexible and convenient installation. Various mounting positions and orientations can be selected based on actual application needs.
- Air Cushion Structure The air cushion mechanism absorbs impact energy as the piston nears the stroke end, decelerating and stopping the piston gradually. This minimizes or prevents piston impact against the cylinder covers, extending the service life.
Technical Parameters
| Parameter Item | Specification | Description |
|---|---|---|
| Series | MDBB | Product Series |
| Bore Size | 50mm | Cylinder Internal Diameter |
| Cylinder Stroke | 125mm | Piston Stroke |
| Action Type | Single-Rod Double-Acting | Bidirectional Drive |
| Operating Pressure Range | 0.05~1.0 MPa | Working Pressure Range |
| Max. Operating Pressure | 1.0 MPa | Maximum Working Pressure |
| Proof Pressure | 1.5 MPa | Pressure Resistance Capability |
| Operating Fluid | Air | Working Medium |
| Ambient Temperature | -10~70℃ | Operating Temperature Range |
| Piston Speed Range | 50~1000 mm/s | Speed Adjustment Range |
| Port Size | Rc1/4 | Port Thread Specification |
| Lubrication Method | Non-Lube | Lubrication Type |
| Rod Diameter | 20mm | Piston Rod Specification |
| Rod End Thread Size | M18×1.5 | Piston Rod Thread Specification |
Model Breakdown
- MDBB: SMC Cylinder Series Code, Standard Cylinder
- 50: Bore Size 50mm
- 125: Cylinder Stroke 125mm
- Z: Built-in Magnetic Ring, for Magnetic Switch Use
Working Principle
The MDBB50-125Z employs a double-acting cylinder structure. When compressed air enters the blank-end side (cap-end), air pressure pushes the piston to extend, generating thrust. When compressed air enters the rod-end side, air pressure pushes the piston to retract. The reciprocating motion of the cylinder is achieved by controlling the direction of compressed air flow via a solenoid valve. The built-in magnetic ring allows for position detection when used with magnetic switches. The cushioning mechanism decelerates and stops the piston near the stroke end by forming a sealed air chamber between the cushion plunger and cushion seal, minimizing or preventing piston impact against the cylinder cover.
Typical Application Scenarios
- Industrial Automation Production Lines Used in automated production lines for automotive manufacturing, electronic equipment production, etc., for pushing, positioning, clamping, and handling workpieces, improving production efficiency and product quality.
- Packaging Machinery Controls actions like material conveying, sorting, and marking in packaging machines. It enables flexible gripping and positioning of different materials through the cylinder, ensuring precision and stability in the production process.
- Robotics Serves as the end-effector for robots, working in conjunction with robotic arms to achieve grasping, positioning, and placement of workpieces. It enables flexible gripping and anti-collision functions through precise pressure control.
- Precision Manufacturing Equipment Used in semiconductor manufacturing, precision machining equipment, etc., to control the action precision of pneumatic actuators. It ensures stability and repeatability in the machining process, enhancing product quality.
Installation and Usage Precautions
- Installation Requirements The cylinder should be mounted on a flat, stable base to ensure stable operation. Before installation, verify that the air supply pressure meets the 0.05~1.0 MPa requirement and ensure the air source is clean. During installation, avoid applying eccentric or lateral loads on the piston rod. Ensure the load’s direction of motion aligns with the piston rod axis.
- Operating Environment Operating temperature range is -10~70℃. Avoid use in excessively high or low-temperature environments. Relative humidity should be maintained below 90% to prevent moisture from affecting equipment lifespan. The operating medium should be filtered through a 40μm or finer filter before use.
- Regular Maintenance Periodically inspect the cylinder’s connecting piping and valves to ensure no leakage. Clean the cylinder surface regularly to maintain cleanliness. Regularly check the cylinder’s operational performance to ensure long-term stable operation. Apply lubricating grease to the cylinder’s sliding parts every 6 months.
- Safe Operation Ensure the equipment is properly grounded before operation to prevent electric shock hazards. Avoid contact with moving parts during operation to prevent pinching injuries. Immediately stop the equipment in case of malfunction and have it repaired by qualified personnel. Always release pressure before installation to prevent injury from high-pressure media discharge.
Concluding Summary
The MDBB50-125Z Standard Cylinder is the “Reliable Drive Expert” in the field of industrial automation. It perfectly combines a large bore, powerful thrust, and high-precision magnetic sensing, providing an efficient, reliable, and convenient linear drive solution for various industrial applications.
Choosing the MDBB50-125Z means choosing to drive your automation system towards higher efficiency with high reliability and powerful performance!
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