Norgren RA-31C Rod Align Coupler 5/16 Inch Bore

Product Description

The NORGREN RA-31C is a rod alignment coupler designed for use with pneumatic air cylinders. It connects to the cylinder rod and absorbs minor misalignment between the rod and the load, reducing side loading on the piston rod seal and extending cylinder service life. This type of coupler is a standard accessory in pneumatic motion control applications and is sized for cylinders with a 5/16 inch bore. Installation is performed by licensed maintenance technicians and industrial mechanics working on pneumatic systems in manufacturing, automation, and process control environments.

The RA-31C is suited for pneumatic cylinder assemblies operating in environments where rod-to-load misalignment is a concern. Its rated minimum operating temperature of -20 degrees F makes it appropriate for cold storage, refrigerated processing, or outdoor pneumatic applications in colder climates. The 5/16 inch bore sizing targets compact cylinder configurations commonly found in light-duty actuation and positioning systems.

Key Features

• Designed for 5/16 inch bore pneumatic air cylinders
• Absorbs angular and parallel misalignment to reduce rod seal wear
• Rated for minimum operating temperature of -20 degrees F
• Compact form factor suited to light-duty pneumatic actuation assemblies
• Single-piece unit, packaged individually (quantity of 1)

Compatibility

Designed for use with pneumatic air cylinders having a 5/16 inch bore. Confirm thread specifications and rod end configuration match the target cylinder before installation.

Installation Notes

Installation is typically performed by qualified pneumatic system technicians or industrial mechanics. Before servicing, depressurize the pneumatic circuit completely and lock out any associated energy sources per applicable LOTO procedures. Verify rod thread engagement depth and alignment after installation to ensure the coupler is not operating at the limits of its range of motion. Do not exceed the cylinder's rated load or speed when a rod alignment coupler is in the assembly.