Lennox 50L99 - ( LB-91246 ) Shaft Key, 3/8 x 3/8 x 5-1/4"
Lennox 50L99 - (LB-91246) Shaft Key, 3/8" x 3/8" x 5-1/4"
The Lennox 50L99 (LB-91246) Shaft Key is a genuine OEM component engineered to ensure dependable power transmission within your HVAC system. With a precise size of 3/8 inch wide x 3/8 inch high x 5-1/4 inches long, this shaft key fits securely into the corresponding keyway cut in both the shaft and mating part (typically a pulley, blower wheel, or fan hub), locking the two components together and preventing slippage during operation.
Crafted from hardened carbon steel, the 50L99 shaft key offers exceptional tensile strength and resistance to shearing forces, making it ideal for demanding applications where torque transfer and alignment are critical. The square profile and extended length provide a greater surface area for contact, improving torque load distribution and enhancing overall drive system efficiency.
Applications:
This shaft key is typically used in blower assemblies, fan drive systems, and motor-shaft couplings where rotational components must remain tightly synchronized. It is commonly found in Lennox gas furnaces, rooftop units, air handlers, and commercial HVAC systems.
This shaft key is typically used in blower assemblies, fan drive systems, and motor-shaft couplings where rotational components must remain tightly synchronized. It is commonly found in Lennox gas furnaces, rooftop units, air handlers, and commercial HVAC systems.
Product Features:
- OEM Quality: Manufactured to Lennox specifications for guaranteed fit and function
- Material: Heat-treated steel for maximum durability and long-term wear resistance
- Dimensions: 3/8" x 3/8" x 5-1/4"
- Function: Locks a shaft to a rotating component, enabling safe and efficient torque transmission
- Installation: Simple drop-in fit into standard square keyways; may be lightly tapped into place for secure seating
- Use Case: Ideal for HVAC equipment subjected to continuous operation and moderate to high torque levels
Why Choose Genuine Lennox Parts?
Using original Lennox parts like the 50L99 Shaft Key ensures compatibility, performance, and long-term reliability. Aftermarket substitutes may not match the same tolerances, potentially leading to wear, misalignment, or system inefficiency.
Note: Always confirm the required key size and compatibility with your specific Lennox model before ordering. Consult your equipment manual or contact a certified technician for verification.
| Package Quantity | 1 Item |
|---|---|
| Item Returns | This item can be returned |
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