Value Collection 20151 Chrome Steel Ball 8 Mm Grade 25

Product Description

The VALUE COLLECTION 20151 is a Grade 25 chrome steel precision ball with an 8 mm overall diameter. Manufactured to tight tolerances, it features a diameter deviation of 0.00005 inches and a sphericity of 0.000025 inches, placing it in the higher accuracy tiers used in demanding mechanical applications. Rockwell hardness runs 62 to 66 C, giving the ball excellent wear resistance and load-bearing capability. These balls are commonly installed by machinists, maintenance technicians, and precision assembly specialists working in industrial and commercial settings.

Grade 25 chrome steel balls are used across a wide range of applications including linear motion assemblies, ball screws, valves, check valves, pumps, and precision bearings. The 8 mm diameter is a standard metric size suited to both metric-spec equipment and custom assemblies requiring consistent geometry. These balls are sold in a package quantity of 25, making them practical for repair stock, production runs, or replacement inventories.

Key Features

• Grade 25 precision classification for tight dimensional control
• Diameter deviation of 0.00005 inches for consistent fit in precision bores
• Sphericity of 0.000025 inches ensures uniform contact and load distribution
• 62 to 66 Rockwell C hardness for strong wear and fatigue resistance
• Chrome steel material provides corrosion resistance and surface durability
• Package of 25 balls per unit, minimum order quantity of 1 package

Compatibility

Designed for use in metric-spec mechanical assemblies, bearings, valves, and precision motion components requiring an 8 mm Grade 25 chrome steel ball.

Installation Notes

Installation is typically performed by machinists or maintenance technicians familiar with precision mechanical assemblies. Ensure the seating bore or race is clean and free of debris before inserting replacement balls. Handle Grade 25 balls carefully to avoid surface damage that could affect roundness or performance. Follow equipment manufacturer specifications for preload and clearance requirements.