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94826021 - AirPro X4000 Replacement Piston Kit with O-Ring

Packaging: pack of 1
$36.55/EA $22.87/pack of 1 only $22.87/EASave 37%

Usually ships within 3-5 business days

SKU: AA94-826-021 Categories: ,

OVERVIEW

Technical Overview

The AirPro X4000 Piston Assembly with O-Ring (SKU: 94826021) is a precision-engineered replacement component designed specifically for the AirPro X4000 series of pneumatic tools. This assembly is critical for the generation of mechanical force within the tool's cylinder, converting pneumatic pressure into linear motion. Manufactured to strict OEM tolerances, the piston ensures proper clearance within the cylinder bore, preventing blow-by and ensuring maximum energy transfer.

The included O-ring is fabricated from high-grade synthetic rubber, selected for its resistance to pneumatic lubricants and compressed air contaminants. It provides a dynamic seal that maintains compression during the drive cycle. Replacing a worn piston assembly is essential when the tool exhibits symptoms of reduced impact frequency (BPM), loss of torque, or excessive air consumption. This kit allows maintenance personnel to perform a complete overhaul of the tool's power section, restoring the unit to its original operational specifications.

Installation of this assembly requires disassembly of the tool's main body. It is recommended to inspect the cylinder walls for scoring during replacement. This part is suitable for industrial MRO environments where tool uptime and reliability are paramount.

Additional Information
Packaging Description:pack of 1
----- new values below ----
Compatible Model:AirPro X4000
Component Type:Internal Mechanism
Includes:Piston, O-Ring
Brand:AirPro
Item:Piston Assembly
Packaging Description:1 Per Ea

INCLUDED

  • 1 x Piston Assembly
  • 1 x O-Ring Seal

APPLICATIONS

  • Repairing AirPro X4000 pneumatic tools
  • Restoring compression in air hammers or scalers
  • Routine maintenance of industrial pneumatic equipment
  • Fixing tools with low impact power or irregular cycling

FAQ

Common signs include a significant drop in tool power, irregular cycling, excessive air consumption, or the tool stalling under load.

The part may have a light protective coating, but you should always apply fresh pneumatic tool oil to the piston and O-ring during installation.

This part is specifically listed for the AirPro X4000. Please check your tool's parts diagram to confirm compatibility with other models.

The piston is manufactured from hardened steel to withstand the high-impact forces and friction inherent in pneumatic tool operation.

The O-ring should be carefully seated in the piston groove. Ensure it is not twisted and apply a small amount of grease or oil to prevent damage during insertion into the cylinder.

It might, if the old piston is seized or the seal is completely blown. However, check the air inlet valve and trigger mechanism as well.

This is a genuine replacement part designed to meet the original manufacturer specifications for the AirPro X4000.

Typically, you will need standard wrenches and snap-ring pliers to disassemble the tool body to access the piston chamber.