How to select pneumatic cylinder mounting methods？

What are the different pneumatic cylinder mounting styles?

Pneumatic cylinder mounting styles vary widely, and the choice of mounting method plays a crucial role in determining the cylinder's performance in specific applications. 

Depending on the direction of the load, motion characteristics, and environmental requirements, selecting the appropriate mounting style can enhance efficiency and extend the lifespan of the equipment. 

Common mounting styles include fixed centerline mounting, fixed offset mounting, and pivot mounting. Each style has its unique features and applications, catering to needs ranging from stable linear motion to complex angular movements.

Fixed Centerline Mount

◆ Mounts directly along the centerline of the cylinder.

◆ Includes flange mounts, front/rear mounting, and tie-rod extended mounts.

◆ Best for linear motion applications.

Fixed Offset Mount

◆ The cylinder is mounted with brackets offset from the centerline.

◆ Examples: foot mounts and side lug mounts.

◆ Ideal for applications requiring flexibility in alignment.

Pivot Mounting

◆ Allows the cylinder to pivot during operation.

◆ Types include clevis mounts, trunnion mounts, and spherical bearings.

◆ Used in applications with angular or arc motions.

Pneumatic Cylinder Mounting Standards: NFPA and ISO Explained

NFPA Standards

◆ Set by the National Fluid Power Association (NFPA).

◆ Focus on interchangeability of parts like tie-rod cylinders.

◆ Widely used in North America.

ISO Standards

◆ International Organization for Standardization (ISO) standards.

◆ Cover metric cylinders for global compatibility.

◆ Common ISO standards include ISO 6431 and ISO 15552.

How to mount pneumatic cylinder?

◆ Understand Application Requirements

• Determine the type of motion (linear or angular) and load characteristics.

• Select the appropriate cylinder type and mounting style to match these requirements.

◆ Prepare for Installation

• Inspect the cylinder and its components for any damage or defects.

• Ensure the mounting surface is clean, flat, and free of debris.

• Verify that the cylinder and accessories meet the system’s operating pressure and load requirements.

◆ Align the Cylinder Properly

• Position the cylinder to align      perfectly with the load path.

• Misalignment can cause radial loads,      leading to wear on the rod, seals, or bearings.

• Use alignment tools or couplers to      achieve precise alignment.

◆ Secure the Cylinder

• Attach the cylinder using the selected mounting style:

• Fixed Centerline Mounts: Use tie rods, flanges, or brackets to secure the cylinder along its centerline.

• Offset Mounts: Attach with foot mounts or side lugs, ensuring the brackets are firmly fastened.

• Pivot Mounts: Use clevises, trunnions, or spherical bearings to allow rotational motion.

• Tighten bolts to the manufacturer’s recommended torque specifications.

◆ Connect Pneumatic Lines

• Attach air supply lines using the correct fittings and ensure they are tightly secured.

• Check that the hoses or tubing are of the proper diameter and length to avoid restrictions in airflow.

◆ Test the Cylinder

• Slowly pressurize the system to perform an initial test.

• Observe for smooth movement, proper alignment, and any signs of air leakage.

• Address any issues before putting the cylinder into full operation.

Common Challenges with Pneumatic Cylinder Mounting and How to Solve Them

Misalignment

Misalignment between the cylinder and its load can cause side forces on the piston rod, leading to wear, seal damage, or even failure. 

To prevent this, ensure precise alignment during installation and consider using flexible mounting accessories like floating joints, which allow minor positional corrections and reduce stress on the cylinder components.

Overloading and Side Loads

Cylinders not designed for side loads may experience bending or increased wear. 

Ensure the cylinder is selected and mounted with an adequate load rating and, if needed, incorporate external guide systems to support loads perpendicular to the cylinder's axis. 

For dynamic systems, adjustable cushions or shock absorbers can help manage sudden forces at the end of the stroke.

Environmental Factors

Factors like temperature, humidity, or exposure to corrosive chemicals can affect cylinder performance. Use materials, seals, and surface treatments appropriate to the environment. 

For example, stainless steel rods or protective bellows are ideal for corrosive or wash-down conditions.

Improper Flow Control Adjustment

If the flow rate is too high, the cylinder may operate too quickly, increasing wear and impact forces at the stroke ends. 

Proper adjustment of flow control valves ensures smooth operation, reducing mechanical stress and prolonging cylinder life.

What Precautions Should I Take When Installing Pneumatic Cylinders?

Verify Cylinder Specifications: 

Ensure the cylinder meets application requirements like bore size, stroke length, and pressure ratings.

Ensure Proper Alignment: 

Align the cylinder with the load to prevent side loads and wear.

Secure Mounting: 

Use the correct mounting style and tighten bolts to the recommended torque.

Check for Environmental Protection: Use appropriate coatings or protective measures for harsh environments.

View our online selection of pneumatic cylinders mounting accessories:

Fokca(Fescolo) is a professional manufacturer specializing in various pneumatic components. We offer a range of cylinder mounting brackets and cylinder accessories. 

For more information, please visit our product page.