Value Collection 20152 Chrome Steel Ball Grade 25 9mm

Product Description

The VALUE COLLECTION 20152 is a Grade 25 chrome steel precision ball used in bearing assemblies, gauging equipment, and precision mechanical applications. It measures 9.0 mm in diameter with a diameter deviation of 0.00005 inches, making it suitable for applications requiring tight dimensional control. Hardness is rated at 62 to 66 HRC, providing the wear resistance expected in load-bearing and high-cycle environments. Chrome steel construction gives this ball consistent surface quality and reliable performance across a range of industrial and mechanical uses. Sold in packages of 20 pieces.

This ball is used in precision bearing assemblies, ball screws, check valves, flow controls, and gauging fixtures in both industrial and commercial settings. The 9.0 mm metric diameter makes it a fit for metric-dimensioned bearing housings and mechanical components. Typical installers include machine builders, maintenance technicians, and precision assembly workers handling bearing replacement or component-level rebuilds.

Key Features

• Grade 25 precision rating with diameter deviation of 0.00005 inches
• Sphericity of 0.000025 inches for consistent roundness across the ball surface
• 62 to 66 HRC hardness for wear resistance in load-bearing applications
• Chrome steel material for durability and surface finish consistency
• Metric 9.0 mm diameter for use in metric-dimensioned assemblies
• Package quantity of 20 pieces per order

Compatibility

Designed as an OEM-style replacement or service component for metric bearing assemblies, check valves, and precision mechanical devices requiring a Grade 25, 9.0 mm chrome steel ball.

Installation Notes

Precision balls are typically handled and installed by machine technicians or bearing specialists using clean, lint-free tools to avoid surface contamination. De-energize and de-pressurize any assembly before removing or replacing bearing components. Avoid direct contact with bare hands during installation, as oils and debris can affect surface finish and dimensional integrity. Follow the equipment manufacturer's assembly specifications for seating force and housing tolerances.