York S1-028-12010-700 Sheave

The York S1-028-12010-700 Sheave is an essential component for any technician focusing on precise airflow calibration in commercial or residential systems. This heavy-duty variable pitch pulley is engineered for high-demand HVAC applications, featuring a 6.55" outside diameter and a 1-3/8" fixed bore to ensure a reliable, concentric connection to the motor shaft. The adjustable pitch range of 4.9" to 6.4" provides the flexibility needed to dial in exact blower speeds, allowing for meticulous control over system CFM and static pressure variables. Fabricated from rugged cast iron, this single groove sheave offers exceptional durability and thermal stability compared to lighter-duty alternatives. It is a critical part for maintaining the drive train performance in York air handlers and rooftop units. By utilizing this York replacement part, contractors can ensure optimal belt tension and alignment, which significantly minimizes mechanical stress on the motor and fan bearings during continuous operation cycles.

Key Benefits

• Precision Airflow Tuning: The variable 4.9" to 6.4" pitch diameter allows for exact CFM adjustments to meet design specifications and balancing requirements.
• Industrial Construction: High-grade cast iron provides superior heat dissipation and resists groove wear, maintaining belt integrity over time.
• Fixed Bore Stability: The 1-3/8" bore ensures a secure fit, reducing shaft vibration and extending the life of motor and fan bearings.
• OEM Compatibility: Specifically engineered as a direct replacement component for York equipment, ensuring proper belt seating and alignment.

Common Questions

How do you adjust the pitch on this York sheave?
Loosen the set screw on the adjustable flange and rotate the outer housing to increase or decrease the pitch diameter, then re-tighten the set screw to lock the specific airflow setting.

What belt types are compatible with this single groove pulley?
This sheave is typically designed for standard A or AX section V-belts. Technicians should verify the belt profile against the groove dimensions to ensure optimal grip and power transfer.

Is this sheave suitable for high-static pressure applications?
Yes, the cast iron construction and fixed bore design are specifically intended to handle the torque and stress associated with high-static commercial blower assemblies.

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.