Armstrong Fluid Technology 871101-384 Ball Bearing

The Armstrong Fluid Technology 871101-384 Ball Bearing is a high-performance inboard ball bearing engineered specifically for professional HVAC and fluid-flow systems. Designed for use in Armstrong Series 4030 pumps with "M" style bearing assemblies, this component supports 213-215T frame sizes and pump models like the 2x1.5x10 and 3x2.5x8. This permanently lubricated bearing features a double-shielded design (6209-2RS) to prevent contamination while maintaining a limiting speed of 7800 RPM. Constructed from high-carbon chrome steel, it ensures smooth rotation and reduced friction in demanding commercial environments. As a genuine Armstrong replacement part, it replaces older part numbers like 971101-384, providing a seamless fit and high radial internal clearance (CN) for long-term operational stability. This 45mm sealed ball bearing is essential for maintaining the alignment and efficiency of your centrifugal pump bearing frame.

Key Benefits

• Permanently Lubricated: Maintenance-free operation with factory-integrated grease for the lifetime of the component.
• Precision Engineering: ISO Class 0 precision ensures minimal vibration and balanced rotation in high-speed 4030 Series pumps.
• Enhanced Protection: Double shields (2RS) protect the internal races from dust, moisture, and debris.
• High Temperature Range: Reliable performance in thermal environments ranging from -40 to 250 °F.
• Direct OEM Fit: Specifically tailored for Armstrong "M" style bearing assemblies, ensuring exact dimensional compatibility.

Common Questions

What pump models use the Armstrong 871101-384?
This inboard bearing is primarily used in Armstrong 4030 Series pumps, specifically those utilizing "M" style bearing frames and 213-215T frame sizes.

Is this bearing interchangeable with part 971101-384?
Yes, the 871101-384 is the direct replacement for the older Armstrong part number 971101-384.

Does this bearing require periodic greasing?
No, this unit is a perm-lube ball bearing that is sealed and lubricated at the factory, requiring no manual grease application during service.

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.