York S1-028-12424-700 Belt

The York S1-028-12424-700 is an industrial-grade A54 V-Belt engineered specifically for high-torque HVACR applications. Measuring 55.3 inches in outside circumference, this classic A-section belt features a 1/2-inch top width designed to sit flush within standard sheaves, ensuring maximum surface contact and efficient power transmission. Constructed with oil and heat-resistant synthetic polymers and reinforced with high-tensile cord members, the S1-028-12424-700 minimizes belt stretch and prevents slippage during high-load startups. As an OEM replacement belt for York, Luxaire, and Coleman air handlers and rooftop units, it maintains precise drive ratios and reduces vibration across the motor shaft and blower assembly. For contractors performing preventative maintenance, this wrapped V-belt offers the durability required to withstand the thermal stresses found in commercial mechanical rooms, preventing premature failure of the HVAC blower drive system.

Key Performance Benefits

• Precision Fit: 55.3-inch length and A-section profile ensure proper V-belt tensioning and alignment in York-manufactured equipment.
• Durable Construction: Built with high-modulus internal cords to handle constant HVAC fan motor cycling without excessive elongation.
• Standardized Sizing: Industry-standard A54 belt dimensions allow for broad cross-compatibility with universal 1/2-inch pulleys.
• Operational Efficiency: Reduces parasitic loss through optimized grip, contributing to lower amperage draw on the drive motor.

Common Installation Questions

Is the S1-028-12424-700 a cogged or wrapped belt?
This is a wrapped belt designed for smooth engagement and quiet operation in standard HVAC drive sheaves where high-speed flexibility is required.

What are the exact dimensions of an A54 belt?
An A54 V-belt typically features a 1/2" top width and a 5/16" thickness, with an inside circumference of 54 inches and an outside circumference of approximately 55.3 inches.

How do I know if this belt needs replacement?
Inspect for glazing on the sidewalls, cracking in the base rubber, or a "bottomed out" appearance in the pulley, which indicates the belt has worn thin and lost its wedge-effect grip.

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.