Rheem-Ruud 70-40805-02 Mount Bearing

The Rheem-Ruud 70-40805-02 Mount Bearing is a critical performance component engineered for high-demand HVAC applications, specifically within blower assemblies and fan housing units. This 4 bolt flange mount bearing features a precision 1-inch bore and an overall thickness of 1.84 inches, providing a robust interface for rotating shafts. Designed with an eccentric locking collar, it ensures a slip-free connection even under high torque, maintaining alignment and reducing harmonic vibration across the blower wheel. For service technicians, this replacement HVAC blower bearing offers a direct-fit solution that distributes radial and axial loads evenly, preventing premature wear on the motor and drive belt. Utilizing a high-grade cast iron housing, the unit provides superior structural integrity compared to lightweight alternatives. Whether you are performing routine maintenance or a full system overhaul, this heavy-duty furnace bearing is the professional standard for restoring operational efficiency and quiet performance in Rheem and Ruud residential or commercial equipment.

Key Benefits

• Precision Shaft Securement: The eccentric locking collar ensures the bearing remains locked to the 1" shaft, preventing surface scoring and vibration.
• Optimized Load Distribution: The 4-bolt flange pattern provides a stable mounting footprint that minimizes stress on the blower housing.
• Reduced Operational Noise: Precision-ground internal races allow for smooth rotation, effectively lowering the decibel output of the air handler.
• Standardized Fitment: Designed specifically for Rheem-Ruud blower assemblies, ensuring 100% mechanical compatibility with OEM specifications.

Common Questions

What is the bore diameter for the 70-40805-02 bearing?
This unit is designed with a 1-inch (1.00") bore diameter, compatible with standard 1" blower shafts used in many Rheem and Ruud furnaces and air handlers.

Does this bearing include the mounting hardware?
The bearing assembly includes the 4-bolt flange housing and the bearing insert with the locking collar; however, mounting bolts for the blower cabinet are typically retained from the original installation or sourced separately (7/16" size recommended).

How do I know if the blower bearing needs replacement?
Signs of failure include rhythmic "squealing" or "grinding" noises during the startup cycle, visible grease leakage around the flange, or excessive shaft play that causes the blower wheel to wobble.

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.