Parker 4.00NLPE91.00 Rodless Air Cylinder 4 in Bore

Product Description

The PARKER 4.00NLPE91.00 is a double acting rodless air cylinder designed for linear motion control in pneumatic systems. With a 4 inch bore and a 1 inch stroke, this cylinder delivers precise, repeatable actuation at working pressures up to 250 psi. The body is constructed from aluminum with steel components, keeping weight low while maintaining structural integrity. Port size is 3/8 NPT, and the rod thread size is 3/4-16. Nitrile butadiene rubber (NBR) seals provide reliable performance across a broad range of temperatures and moderate fluid exposures. Licensed HVAC, pneumatic, and industrial maintenance technicians are the typical installers of this component.

This cylinder is suited for industrial automation, manufacturing equipment, and mechanical systems requiring compact linear actuation without a protruding rod. The head or cap mounting style allows flexible integration into existing machine frames or custom fabrication setups. The 5.5 inch overall width and 4.328 inch length make it a practical fit for space-constrained installations. Double acting operation means the cylinder uses air pressure on both the extend and retract strokes, providing controlled force in both directions without relying on a return spring.

Key Features

• 4 inch bore diameter for substantial force output at standard shop air pressures
• 1 inch stroke length for compact, precise linear displacement
• 250 psi maximum working pressure for compatibility with standard pneumatic supply lines
• 3/8 NPT port for straightforward connection to standard pneumatic fittings
• Aluminum body construction reduces system weight while maintaining durability
• NBR seals provide resistance to wear and moderate chemical exposure
• Head or cap mounting style allows flexible installation orientation

Compatibility

Designed as an OEM-style replacement or direct-fit component for industrial pneumatic systems requiring a double acting rodless air cylinder with a 4 inch bore, 3/8 NPT porting, and head or cap mounting.

Installation Notes

Installation should be performed by a qualified pneumatic or industrial maintenance technician. Depressurize and lock out the pneumatic supply line before servicing or replacing the cylinder. Ensure all NPT port connections are sealed with appropriate thread sealant rated for pneumatic service. Verify that the mounting surface and fastener patterns are aligned to the head or cap mounting configuration before applying system pressure.