WENK Pneumatic CG1 Series Mini Cylinder
Product Detail
Acting Mode |
Single rod, double-acting |
Working Media |
Cleaned Air |
Working Pressure |
0.05~1.0Mpa |
Proof Pressure |
1.5Mpa |
Working Temperature Range |
-10℃~70℃ |
Body Material |
Aluminum Alloy |
CG1 Mini Cylinder - Operating Guide

1. Product Introduction
The CG1 Mini Cylinder by WENK Pneumatic is a high-quality pneumatic actuator designed for precision automation applications with limited space. Key features include:
- Compact design: High-strength aluminum alloy cylinder tube with anodized surface treatment, providing excellent corrosion resistance and wear resistance
- Multiple specifications: Bore diameter range 20mm-100mm, standard stroke 25mm-300mm, customizable long stroke up to 1500mm
- Various functional types:
- Double-acting single rod type (CG1-Z series)
- Double-acting double rod type (CG1W-Z series)
- Single-acting spring return type (CG1-S series)
- Single-acting spring extend type (CG1-T series)
- Non-rotating type (CG1K series)
- Low friction design: Precisely machined cylinder inner surface ensures smooth piston movement with minimal friction resistance
- Buffer design: Built-in fixed crash pads in front and rear end caps effectively reduce reversing impact
- Flexible installation: Provides various mounting methods including basic type, axial foot type, flange type, trunnion type, etc.
- Optional accessories: Supports installation of magnetic switches for position detection and automated control
Applications: Industrial automation production lines, robot end effectors, precision machinery, medical equipment, electronic devices, packaging machinery, food processing equipment, and other fields.

2. Working Principle
The CG1 Mini Cylinder is a pneumatic actuator that converts compressed air pressure energy into linear motion mechanical energy. Its working principle is as follows:
Double-acting Cylinder Working Principle
-
Extension process:
- Compressed air enters the cylinder from the rodless side port
- Pressure difference forms on both sides of the piston, pushing the piston to move toward the rod side
- The piston rod extends, and air on the rod side is exhausted from the rod side port
-
Retraction process:
- Compressed air enters the cylinder from the rod side port
- Reverse pressure difference forms on both sides of the piston, pushing the piston to move toward the rodless side
- The piston rod retracts, and air on the rodless side is exhausted from the rodless side port
Extension process:
- Compressed air enters the cylinder from the rodless side port
- Pressure difference forms on both sides of the piston, pushing the piston to move toward the rod side
- The piston rod extends, and air on the rod side is exhausted from the rod side port
Retraction process:
- Compressed air enters the cylinder from the rod side port
- Reverse pressure difference forms on both sides of the piston, pushing the piston to move toward the rodless side
- The piston rod retracts, and air on the rodless side is exhausted from the rodless side port
Single-acting Cylinder Working Principle
-
Single-acting spring return type:
- When compressed air enters the cylinder, the piston rod extends
- When exhausting, the piston rod returns to its original position by spring force
-
Single-acting spring extend type:
- When compressed air enters the cylinder, the piston rod retracts
- When exhausting, the piston rod extends to its original position by spring force
Single-acting spring return type:
- When compressed air enters the cylinder, the piston rod extends
- When exhausting, the piston rod returns to its original position by spring force
Single-acting spring extend type:
- When compressed air enters the cylinder, the piston rod retracts
- When exhausting, the piston rod extends to its original position by spring force
Buffer Principle
The cylinder has built-in rubber buffer pads or air buffer devices. When the piston moves to the end of the stroke, it absorbs impact energy through compressed air or rubber deformation, reducing noise and extending service life.

3. Installation Guide
Pre-installation Preparation
- Check if the cylinder appearance is intact, without damage or deformation
- Confirm that the cylinder model and specifications match the usage requirements
- Check if the connecting threads are intact, do not use if damaged
- Clean the installation surface to ensure no dust, oil, or other impurities
Installation Steps
-
Choose the appropriate installation method:
- Basic type: Directly fix through the mounting holes on the cylinder tube
- Axial foot type: Use special foot brackets to fix on the mounting surface
- Flange type: Fix through front or rear flange
- Trunnion type: Install through front or rear trunnion
-
Installation notes:
- Ensure the cylinder is installed firmly to avoid vibration
- The mounting surface should be flat, ensuring the cylinder axis is parallel to the load movement direction
- Avoid applying radial force or torque to the piston rod
- Reserve enough space to ensure the piston rod can fully extend and retract
- If installing magnetic switches, please refer to the relevant installation instructions
-
Piping connection:
- Use appropriate air pipes and fittings to connect the cylinder
- Ensure the piping is clean without impurities
- Connect the inlet and exhaust ports according to the markings on the cylinder
- It is recommended to install filters, pressure regulators, and lubricators at the air inlet
Choose the appropriate installation method:
- Basic type: Directly fix through the mounting holes on the cylinder tube
- Axial foot type: Use special foot brackets to fix on the mounting surface
- Flange type: Fix through front or rear flange
- Trunnion type: Install through front or rear trunnion
Installation notes:
- Ensure the cylinder is installed firmly to avoid vibration
- The mounting surface should be flat, ensuring the cylinder axis is parallel to the load movement direction
- Avoid applying radial force or torque to the piston rod
- Reserve enough space to ensure the piston rod can fully extend and retract
- If installing magnetic switches, please refer to the relevant installation instructions
Piping connection:
- Use appropriate air pipes and fittings to connect the cylinder
- Ensure the piping is clean without impurities
- Connect the inlet and exhaust ports according to the markings on the cylinder
- It is recommended to install filters, pressure regulators, and lubricators at the air inlet
Recommended Installation Locations
- Avoid installation in environments with high temperature, high humidity, dust, or corrosive gases
- If used in harsh environments, take appropriate protective measures
- The installation location should be convenient for maintenance and inspection
- Avoid direct sunlight to prevent aging of seals

4. Operating Instructions
Pre-start Check
- Confirm that the air source pressure is within the range of 0.05-1.0MPa
- Check if the piping connections are firm without leakage
- Manually operate the cylinder to confirm flexible movement without jamming
- If magnetic switches are installed, check if the signals are normal
Operation
- Slowly adjust the air source pressure to avoid sudden loading
- Observe if the cylinder runs smoothly without abnormal noise
- Check if the piston rod has abnormal swing or deviation
- Confirm that the cylinder stroke meets the requirements
- After running for a period of time, check if the cylinder temperature is normal
Maintenance
-
Regular inspection:
- Check once a week if the piping connections are firm
- Check once a month if the piston rod surface is damaged
- Check once a quarter if the seals are aged or damaged
-
Lubrication maintenance:
- Standard cylinders do not require additional lubrication
- If lubrication is needed, ISO VG32 turbine oil can be used
- It is recommended to provide an appropriate amount of lubricating oil to the cylinder through an oil mist device
-
Cleaning maintenance:
- Regularly clean dust and oil from the cylinder surface
- Keep the piston rod surface clean to avoid scratches
- Check if the buffer pads are worn, replace if necessary
Regular inspection:
- Check once a week if the piping connections are firm
- Check once a month if the piston rod surface is damaged
- Check once a quarter if the seals are aged or damaged
Lubrication maintenance:
- Standard cylinders do not require additional lubrication
- If lubrication is needed, ISO VG32 turbine oil can be used
- It is recommended to provide an appropriate amount of lubricating oil to the cylinder through an oil mist device
Cleaning maintenance:
- Regularly clean dust and oil from the cylinder surface
- Keep the piston rod surface clean to avoid scratches
- Check if the buffer pads are worn, replace if necessary
Usage Notes
- Avoid using beyond the maximum working pressure
- Control the piston speed within the range of 50-1000mm/s
- Avoid using in extreme temperature environments
- Prevent foreign objects from entering the cylinder interior
- When not in use for a long time, drain the compressed air from the cylinder

4. Operating Instructions
Pre-start Check
- Confirm that the air source pressure is within the range of 0.05-1.0MPa
- Check if the piping connections are firm without leakage
- Manually operate the cylinder to confirm flexible movement without jamming
- If magnetic switches are installed, check if the signals are normal
Operation
- Slowly adjust the air source pressure to avoid sudden loading
- Observe if the cylinder runs smoothly without abnormal noise
- Check if the piston rod has abnormal swing or deviation
- Confirm that the cylinder stroke meets the requirements
- After running for a period of time, check if the cylinder temperature is normal
Maintenance
-
Regular inspection:
- Check once a week if the piping connections are firm
- Check once a month if the piston rod surface is damaged
- Check once a quarter if the seals are aged or damaged
-
Lubrication maintenance:
- Standard cylinders do not require additional lubrication
- If lubrication is needed, ISO VG32 turbine oil can be used
- It is recommended to provide an appropriate amount of lubricating oil to the cylinder through an oil mist device
-
Cleaning maintenance:
- Regularly clean dust and oil from the cylinder surface
- Keep the piston rod surface clean to avoid scratches
- Check if the buffer pads are worn, replace if necessary
Regular inspection:
- Check once a week if the piping connections are firm
- Check once a month if the piston rod surface is damaged
- Check once a quarter if the seals are aged or damaged
Lubrication maintenance:
- Standard cylinders do not require additional lubrication
- If lubrication is needed, ISO VG32 turbine oil can be used
- It is recommended to provide an appropriate amount of lubricating oil to the cylinder through an oil mist device
Cleaning maintenance:
- Regularly clean dust and oil from the cylinder surface
- Keep the piston rod surface clean to avoid scratches
- Check if the buffer pads are worn, replace if necessary
Usage Notes
- Avoid using beyond the maximum working pressure
- Control the piston speed within the range of 50-1000mm/s
- Avoid using in extreme temperature environments
- Prevent foreign objects from entering the cylinder interior
- When not in use for a long time, drain the compressed air from the cylinder













