Accupro 12378457 Ball End Mill 1/32 in 4 Flute Carbide

Product Description

The ACCUPRO 12378457 is a solid carbide ball end mill designed for precision milling in miniature and tight-tolerance applications. With a 1/32 inch (0.0312 inch) cutting diameter and 4-flute geometry, this tool delivers smooth surface finishes and efficient chip evacuation in small-scale cuts. The ball nose profile generates contoured and radius features in a single pass. A 30-degree helix angle balances cutting forces across the flutes, reducing chatter in fine-detail work. The bright, uncoated finish suits a broad range of base materials and is compatible with oil-based cutting fluids. This end mill is intended for use by machinists and tooling professionals in CNC and manual milling operations.

This tool is sized for miniature milling operations where small-diameter tooling is required. The 0.0940 inch length of cut and 1/8 inch shank diameter make it well suited for slotting, profiling, and contouring in tight cavities or small workpiece features. Typical applications include die and mold work, prototype machining, and detailed part finishing in ferrous and non-ferrous materials. It is a single-end tool, meaning the cutting geometry is on one end only.

Key Features

• 1/32 inch (0.0312 inch) ball nose diameter for miniature milling applications
• 4-flute configuration for improved surface finish and material removal rate
• Solid carbide micrograin construction for rigidity and wear resistance
• 30-degree right-hand helix with right-hand cutting direction
• Bright, uncoated finish compatible with a wide range of workpiece materials
• Single-end design with 1-1/2 inch overall length and 1/8 inch shank diameter

Compatibility

Designed as an OEM-style replacement or standard tooling option for CNC machining centers and manual mills accepting a 1/8 inch shank collet or tool holder.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the 1/8 inch shank in a properly sized collet or end mill holder, ensuring minimum runout before operation. Confirm spindle speed and feed rate are appropriate for the workpiece material and tool diameter before engaging the cut. Inspect the cutting edges for chips or wear before each use, as small-diameter carbide tooling is susceptible to breakage under excessive load or improper setup.