Lennox 87116 Sheave

The Lennox 87116 Sheave is a precision-engineered single groove cast iron pulley designed for heavy-duty HVAC blower and motor assemblies. Featuring an 8.75" outside diameter and a 1" fixed bore, this component is essential for maintaining correct static pressure and airflow ratings in commercial air handling units. Constructed from high-grade cast iron, it provides superior vibration dampening and thermal stability compared to lighter-duty alternatives. The fixed bore drive sheave ensures a secure fit on the motor shaft, preventing slippage during high-torque startup cycles. This HVAC replacement sheave is built to standard belt profiles, ensuring optimal power transmission and reduced wear on Lennox blower components. For contractors performing preventative maintenance or system repairs, this sheave provides the dimensional accuracy required for exact RPM matching and OEM belt drive compatibility.

• High-grade cast iron construction for maximum durability and resistance to groove wear.
• 8.75-inch OD designed for precise drive ratio configurations in Lennox rooftop units.
• 1-inch fixed bore ensures a concentric fit to the drive shaft, reducing harmonic vibration.
• Single groove design optimized for standard industrial V-belt profiles.
• Corrosion-resistant finish helps maintain surface integrity in demanding mechanical environments.

Is this sheave compatible with adjustable pitch pulleys?
No, this is a fixed diameter sheave designed to maintain a constant drive ratio. If you are replacing a variable pitch pulley, ensure your motor base allows for sufficient belt tension adjustment.

Does this include the set screw for the 1" bore?
Most standard Lennox 87116 units include a pre-installed set screw for securing the sheave to the keyed motor shaft, though it is best practice to verify shaft keyway alignment during installation.

How do I prevent belt squeal after installing this cast iron pulley?
Ensure the 8.75" sheave is perfectly aligned with the driven pulley using a laser or straightedge tool. Proper tensioning of the V-belt is critical to prevent glazing and premature wear on the cast iron grooves.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.