Carrier KR11HY232 Sheave

The Carrier KR11HY232 is an OEM-spec single-groove cast iron sheave engineered for high-demand HVAC blower assembly applications. With a 6.5-inch diameter and a precision-machined 1 1/8-inch bore, this cast iron pulley provides the structural integrity required for consistent power transmission in belt-driven systems. Designed to withstand the lateral stresses of industrial fans and motors, the KR11HY232 sheave ensures optimal belt alignment and reduces vibration in rooftop units and split systems. As a genuine Carrier replacement part, it meets strict tolerances for balance and concentricity, preventing premature wear on belts and motor bearings. This 1-groove sheave is a critical component for technicians performing maintenance on belt-driven HVAC blowers, providing a reliable interface between the motor and the fan shaft for 48HCDD145A and 48TCED166A series models. Its heavy-duty construction makes it suitable for harsh environments where domestic or commercial climate control reliability is non-negotiable.

• OEM Precision: Direct replacement part ensuring exact fitment for Carrier and Bryant belt-drive blower motors.
• High-Durability Cast Iron: Resistant to thermal expansion and warping under high-load industrial operations.
• Optimized Power Transfer: The 6.5" outer diameter is calculated to maintain specific CFM requirements when paired with matching 1 1/8" shafts.
• Reduced Maintenance: Precision-balanced design minimizes mechanical vibration, extending the service life of drive belts and bearings.

What is the bore size of the KR11HY232?
This sheave features a standard 1 1/8-inch (1.125") bore, specifically designed for 1-1/8" motor or fan shafts commonly found in commercial blower assemblies.

Is this a single or double groove pulley?
The KR11HY232 is a single-groove (1gr) sheave, intended for systems utilizing a single drive belt configuration.

Which HVAC models are compatible with this sheave?
It is primarily utilized in Carrier and Bryant commercial rooftop units, specifically those in the 48HC and 48TC series that utilize belt-driven blower 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.