Graco 125919 Key Parallel Square 1/4

Graco 125919 Parallel Square Key (1/4") Overview

Compatible Machines

• Graco LineLazer V 250SPS (Self-Propelled)
• Graco LineLazer V 250DC (Dual-Color, Self-Propelled)
• Graco LineLazer V 250SPS HP Reflective Series
• Graco LineLazer V 250DC HP Reflective Series

Product Description

The Graco 125919 parallel square key (1/4") is a precision-machined component for Graco self-propelled line stripers. It securely locks rotating parts to the shaft, preventing slippage and ensuring consistent power transfer for smooth operation.

Key Features

• 1/4" parallel square key for accurate fit on Graco shafts
• Precision-engineered to prevent rotational slippage
• Durable metal construction for long-lasting use
• OEM replacement part — exact match for Graco part number 125919
• Ensures reliable torque transfer in drive assemblies

Benefits of Installation

• Secures rotating components to maintain consistent operation
• Reduces wear on drive shafts and associated parts
• Improves reliability and efficiency of striping machines
• Maintains OEM compliance and performance standards

Installation & Maintenance Tips

• Ensure the shaft and keyway are clean and free of debris
• Align key properly before securing components
• Use appropriate tools to avoid damaging the key or shaft
• Check periodically for wear or movement during maintenance
• Replace immediately if signs of deformation or wear appear

Frequently Asked Questions