Modification Options for Parker Air Cylinders
Metallic Rod Wiper Gland Assembly
Metallic rod wipers can be supplied instead of the standard wipers if specified. These are recommended in applications where contaminants could adhere to the extended piston rod and would damage the standard wiper. Installation of a metallic rod wiper assembly does not affect cylinder dimensions.
Rod End Boots
Most Parker cylinders have a hardened bearing surface on the standard piston rod to resist external damage and are equipped with a high efficiency wiper to remove external dust and dirt. Exposed piston rods that are exposed to contaminants with air-hardening properties, such as paint, should be protected. The use of a collapsing cover, commonly referred to as a "boot," should be considered in these applications. Calculate the longer rod end required to accommodate the collapsed length of the boot from the table below.
To determine extra length of the piston rod required to accomodate a boot, caluclate using the following formula:
BL = Stroke x LF + 1-1/8"
BL = std LAF (male rod end) or WF (female rod end) dimension = length of piston rod to extend beyond the head face
Note: Please compare the boot OD size to the standard E dimension per desired cylinder series and bore. This may be critical for foot mounted cylinders.
A tandem cylinder is made up of two cylinders mounted in line with pistons connected by a common piston rod, and rod seals installed between the cylinders to permit double-acting operation of each. Tandem cylinders allow increased output force when mounting width and height are restricted.
A duplex cylinder is made up of two cylinders mounted in line with pistons not connected and with rod seals installed between the cylinders to permit double-acting operation of each. Cylinders may be mounted with piston rod to piston or back to back, and are generally used to provide three position operation.
Engineering & Product Selection Information
Pneumatic Product Selection
- Pneumatic Actuators & Air Cylinders
- Pneumatic Cylinders
- Automation Products: rotary actuators, grippers, slide tables, rotary tables, escapement
- Actuator Accessories: Linear alignment couplers, flow controls, air oil tanks, rodlocks, electronic sensors, shock absorbers
Application Engineering Data
- Operating Principles and Construction
- Fluids and Temperature
- Push and Pull Forces
- Mounting Information
- Tie Rod Supports, Stroke Data & Stroke Adjusters
- Mounting Classes
- Stop Tubing
- Stroke Selection Chart
- Deceleration Force and Air Requirements
- Cushion Ratings and Air Requirements
- NFPA Rod End Data and Piston Rods
- Modifications, Special Assemblies, Tandem Cylinders, Duplex Cylinders
- Rotary Actuator Torque Requirements
- Rotary Actuator Basic Equations
- Conversion Factors
These products can expose you to chemicals including lead and/or DEHP and/or carbon black, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov