This part is a Magnaloy 300 series coupling hub, designed for flexible drive connections in industrial equipment. It is constructed from lightweight magnesium alloy for strength and reduced weight, and is intended for use in GRACO equipment requiring a secure, keyed shaft connection.

Key Features:

• Keyed coupling hub
• Model 300, 1-5/8" bore x 3/8" key
• Lightweight magnesium alloy
• Compatible with GRACO equipment requiring a 1-5/8" bore and 3/8" keyway
• Lightweight construction (76% lighter than steel)
• Heavy-duty flexible drive coupling
• Single setscrew design for secure mounting
• Clamp feature available for certain models

Applications:
Used in industrial machinery, lubrication systems, and other GRACO equipment where flexible, reliable shaft connections are required.

Installation Notes:

• Using genuine GRACO or Magnaloy parts ensures compatibility, reliability, and optimal performance in demanding industrial environments.
• Ensure shaft and bore dimensions match before installation
• Align keyway properly with shaft
• Tighten setscrew securely to prevent slippage
• Check for proper fit and alignment before operation