Sterling 11J34R06999-112 Blade

The Sterling 11J34R06999-112 Fan Blade is a direct OEM replacement component specifically engineered for the Sterling TF series gas-fired unit heaters. Designed to maintain precise CFM output and static pressure balance, this 4-blade aluminum assembly ensures optimal heat exchanger cooling preventing high-limit trips or premature component fatigue. When replacing a damaged or pitched blade, ensuring hub diameter compatibility and correct blade pitch is critical for motor longevity and airflow efficiency. This blade is manufactured to rigorous tolerances to minimize vibration, protecting the fan motor bearing and reducing decibel levels during startup and continuous operation cycles. For contractors performing preventative maintenance or emergency repairs on Sterling HVAC systems, using this genuine 11J34R06999-112 part ensures the unit operates within its original factory performance curve and maintains proper combustion air ratios.

Key Benefits

• Precision Balanced Aluminum Construction: Reduces axial load on the motor shaft, extending the service life of 1/6 HP and 1/4 HP motors.
• Direct OEM Fitment: Eliminates the need for universal hub adapters, ensuring the fan orifice clearance is maintained for peak efficiency.
• Corrosion Resistance: High-grade alloy withstands the thermal cycling and humidity levels common in industrial unit heater applications.
• Optimal Airflow Geometry: Engineered to provide the specific static pressure required to move air across the heat exchanger tubes effectively.

Common Questions

Is the 11J34R06999-112 compatible with the TF-100 and TF-125 models?
Yes, this fan blade is the standard specification for several models within the Sterling TF Series. Always verify the shaft diameter and rotation (CW/CCW) against the motor nameplate before installation.

How do I identify if my Sterling heater needs a new fan blade?
Look for signs of stress fracturing at the hub, bent blades that cause cabinet vibration, or excessive noise. An unbalanced blade can lead to motor bearing failure if not addressed promptly.

Does this blade include the set screw?
Typically, Sterling OEM blades come with the necessary set screw pre-installed in the hub for secure fastening to the motor shaft flat.

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.