Parker 1458040044 Air Cylinder Rod Eye Knuckle 7/16-20 Thread

Product Description

The PARKER 1458040044 is an air cylinder rod eye knuckle accessory designed for use with Parker 3MA and 4MA series pneumatic cylinders. This end-of-rod attachment converts the cylinder rod end into a pivoting knuckle joint, allowing the cylinder to transmit linear force through an articulating linkage. It is threaded at 7/16-20 and fits bore sizes ranging from 1-1/2 to 8 inches, making it a versatile accessory across a wide range of cylinder frame sizes within those two series. Mechanical, industrial maintenance, and pneumatic system technicians are the primary installers of this component in factory automation, machine building, and general industrial applications.

This rod eye knuckle is suited for industrial pneumatic systems where the cylinder rod must connect to a clevis pin, bracket, or lever arm that requires angular movement. It is compatible with Parker 3MA and 4MA series cylinders covering bore sizes from 1-1/2 to 8 inches. Typical install scenarios include conveyor actuators, press tooling, valve operators, and fixture clamping systems where pivot motion must be accommodated at the rod end. The 7/16-20 thread ensures a direct, secure connection to the cylinder rod without adapters.

Key Features

• 7/16-20 threaded connection for direct rod attachment
• Compatible with bore sizes from 1-1/2 to 8 inches
• Designed specifically for Parker 3MA and 4MA series cylinders
• Knuckle joint design allows angular articulation at the rod end
• Weighs 2 pounds — substantial construction suited to industrial duty cycles

Compatibility

Designed for use with Parker 3MA and 4MA series pneumatic cylinders with bore sizes from 1-1/2 to 8 inches.

Installation Notes

Installation is performed by qualified mechanical or pneumatic system technicians. Depressurize and lock out the pneumatic circuit before removing or installing any rod end accessory. Thread engagement should be sufficient to seat the knuckle fully without bottoming out on the rod; use a thread-locking compound if required by the application. Verify that the clevis pin and mating bracket are rated for the cylinder output force before placing the system back in service.