Value Collection SR144 Miniature Ball Bearing ABEC-5

Product Description

The VALUE COLLECTION SR144 is a miniature open-style ball bearing designed for compact mechanical assemblies where precise, low-friction rotation is required in a tight envelope. It carries bearing number SF144 and is rated to an ABEC-5 precision class, making it appropriate for applications that demand tighter tolerances than standard commercial bearings. The bore measures 0.125 inches, the outside diameter is 0.25 inches, and the overall width is 0.0937 inches. Constructed with a stainless steel housing, it offers 64 pounds of dynamic load capacity and 20 pounds of static load capacity in a single-row configuration. Mechanical technicians, instrument repair technicians, and precision equipment assemblers are the typical installers.

This miniature bearing is suited for use in small motors, precision instruments, light-duty spindles, dental equipment, RC mechanisms, and other compact rotating assemblies where space is constrained and dimensional accuracy is critical. The open style means no seals or shields are present, which allows for easy lubrication but requires a clean operating environment to prevent contamination. Its stainless steel construction makes it a reasonable choice for environments with light moisture exposure or where corrosion resistance is a consideration.

Key Features

• ABEC-5 precision rating for tighter dimensional and runout tolerances
• Stainless steel housing for corrosion resistance in light-duty wet or humid environments
• Open style allows field lubrication and suits clean operating conditions
• Single-row design handles both radial and light axial loads
• 64 pounds dynamic load capacity and 20 pounds static load capacity
• Compact envelope: 0.125 inches bore, 0.25 inches OD, 0.0937 inches width

Compatibility

Designed as a standard miniature ball bearing replacement identified by bearing number SF144, suitable for compact rotating assemblies requiring a 0.125 inches bore and 0.25 inches outside diameter.

Installation Notes

Installation is typically performed by mechanical or instrumentation technicians. Always de-energize and lock out the equipment before removing or seating bearings. Use a proper bearing press or installation tool that applies force to the correct race — never drive a bearing into place by striking the rolling elements or the opposite race. Open bearings require clean handling and should be lubricated appropriately for the application before installation.