Carrier KR11HY216 Sheave

Professional-grade Carrier KR11HY216 Sheave is a critical component for maintaining precise mechanical power transmission in belt-driven HVACR systems. This cast iron sheave features a high-durability construction designed to withstand the operational stressors of commercial air handlers and rooftop units. With a 7/8" bore and a 4.15" diameter, this single-groove component ensures accurate blower RPM and airflow management. It is a direct OEM replacement motor pulley for specific Carrier, Bryant, and Carlyle equipment, including 40RUQA08AA1A and 50TC-D165A models. Utilizing an authentic single-groove pulley prevents common issues like premature belt wear and fan vibration. For technicians performing routine maintenance or system balancing, the KR11HY216 provides the exact tolerances required for long-term reliability and efficient torque transfer. Proper alignment and secure mounting on the motor shaft are essential to prevent axial runout and maintain optimal system performance.

• Precise Power Transfer: Engineered with a 4.15" diameter to maintain designated blower speeds and static pressure.
• Cast Iron Durability: The heavy-duty cast iron construction resist warping and wear under high-torque conditions.
• Perfect Fitment: Fixed 7/8" bore ensures a secure, slip-free connection to standard 7/8-inch motor shafts.
• Vibration Reduction: Balanced design minimizes harmonic vibration, extending the service life of motor and blower bearings.

Is this sheave compatible with adjustable-pitch pulleys?
The KR11HY216 is a fixed-diameter single-groove sheave; it is designed for applications where the drive ratio is predetermined for specific airflow requirements.

How do I ensure the sheave is aligned correctly during installation?
Use a straight edge or laser alignment tool to verify the belt path is perfectly parallel between the motor sheave and the blower pulley to prevent squealing and heat buildup.

Can this be used on non-Carrier equipment?
While designed as a Carrier HVAC replacement part, it can be used on any motor with a 7/8" shaft provided the belt profile and diameter match the original system specifications.

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.