York S1-001-07110-005 Pulley Key

The York S1-001-07110-005 Pulley Key is a critical OEM mechanical component precision-cut to 1/4 inch x 2 inch dimensions. Designed for technicians servicing York blower motor assemblies, packaged units (RTUs), and furnace drive systems, this square key ensures a positive mechanical lock between the motor shaft and the drive pulley. In high-torque HVAC applications, a standard 1/4x2 Pulley Key must provide exact tolerances to prevent shaft slippage and catastrophic drive belt failure. This genuine York replacement part is engineered from CNC-cut high-strength steel to resist shear stress and wallowing within the keyway during rapid cycling or high-static pressure startups. For contractors, maintaining the integrity of the blower motor pulley connection is essential for consistent CFM delivery and system operational efficiency. Whether performing a routine HVAC motor maintenance or a complete blower assembly repair, using a factory-spec drive shaft key eliminates the vibration and alignment issues common with generic, soft-metal hardware alternatives.

• Precision Tolerance: Standardized 1/4" x 2" square key stock ensures a snug, zero-play fit in York OEM keyways.
• Torque Transfer: Facilitates maximum power transmission from the blower motor to the sheave without mechanical drift.
• Shear Resistance: Hardened steel construction prevents rounding or deformation under heavy start-up loads in commercial RTUs.
• Universal Compatibility: Fits a broad range of York heating and cooling equipment, including the B3CH060A46EB series.

Is this key compatible with all 1/4" shaft keyways?
While it fits standard 1/4" keyways, its 2" length is specifically designed for York blower pulleys and fan sheaves. Always verify the required length to ensure full engagement across the entire pulley hub.

What causes a pulley key to fail in an HVAC system?
Repeated frequent cycling, loose set screws, or incorrect belt tension can cause the key to "hunt" in the keyseat, leading to wallowing or shearing. Replacing a worn key during motor service prevents shaft damage.

Can I use this for both residential and commercial York units?
Yes, this 1/4x2 Pulley Key is a standard component across various York residential furnaces and commercial air handlers utilizing belt-drive configurations.

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.