Accupro 12276923 Ball End Mill 0.03 in 4 Flute Carbide

Product Description

The ACCUPRO 12276923 is a miniature solid carbide ball end mill designed for precision milling of small features, contoured surfaces, and tight-radius profiles. With a 0.0300-inch cutting diameter and a 0.0900-inch length of cut, this tool is built for fine detail work where dimensional accuracy is critical. The micrograin carbide construction delivers the hardness and edge retention needed for consistent performance in ferrous and non-ferrous materials. A 30-degree helix angle promotes smooth chip evacuation and reduces cutting forces. This is a single-end, right-hand cut tool with a bright uncoated finish, suitable for high-tolerance machining applications.

This end mill is used in CNC milling operations where small-diameter tooling is required, such as mold and die work, prototype machining, aerospace component finishing, and medical device manufacturing. The miniature series designation makes it appropriate for micro-milling on vertical machining centers and high-speed spindles. The 1/8-inch shank diameter is compatible with standard collet chuck systems used in precision machine shops. Both cutting direction and flute direction are right-hand, consistent with standard CNC toolpath conventions.

Key Features

• 0.0300-inch ball nose cutting diameter for micro-feature and contour milling
• 4-flute geometry with 30-degree helix for efficient chip evacuation and surface finish quality
• Micrograin solid carbide substrate for superior hardness and edge retention
• Bright uncoated finish suitable for general-purpose and non-ferrous milling
• Single-end design with right-hand cut and right-hand spiral flutes
• Tight mill diameter tolerance of +0.0000 / -0.0010 inches for precision fitment

Compatibility

Designed for use in CNC machining centers and high-speed milling spindles equipped with 1/8-inch collet systems; fits standard ER and precision collet chuck configurations used with miniature carbide tooling.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully powered down and the machine is in a safe state before changing tooling. Seat the shank fully into the collet and torque the collet nut to the manufacturer specification for the collet system in use. At this diameter, runout control is critical — inspect the collet and holder for wear or contamination before seating the tool, as even minor runout will affect tool life and part accuracy.