Accupro 313609 Ball End Mill 5/16 in 2 Flute Solid Carbide

Product Description

The ACCUPRO 313609 is a single-end ball end mill designed for precision milling operations in metal, composite, and plastic workpieces. Built from micrograin solid carbide, it delivers the rigidity and wear resistance required for demanding finishing and profiling cuts. The 5/16-inch cutting diameter pairs with a 45-degree helix angle to promote smooth chip evacuation and reduce chatter during radial engagement. With two flutes and a bright, uncoated finish, this end mill suits high-speed operations where coating buildup is a concern. A licensed machinist or CNC programmer typically specifies this tool for contouring, slotting, and 3D profiling passes.

This ball end mill is well suited to job shop and production environments running vertical or horizontal CNC machining centers. Its 13/16-inch length of cut accommodates moderate-depth profiling and cavity work. The 5/16-inch shank diameter fits standard ER and straight-bore collet systems common in most CNC and manual milling setups. Right-hand cutting direction and right-hand flute spiral make it compatible with conventional spindle rotation on the majority of milling machines in use today.

Key Features

• Micrograin solid carbide construction for extended tool life and edge stability
• 45-degree helix angle promotes efficient chip evacuation and reduces cutting forces
• Bright/uncoated finish suited for high-speed cuts where heat buildup is managed by coolant or air blast
• Right-hand cut with right-hand spiral flutes for standard spindle compatibility
• Single-end design with consistent 5/16-inch shank and cutting diameter for straightforward setup
• No chipbreaker, no variable helix — straightforward geometry for general profiling and finishing

Compatibility

Designed as a general-purpose replacement or production ball end mill for CNC and manual milling machines accepting a 5/16-inch straight shank via collet or tool holder.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the shank fully within the collet or tool holder to the manufacturer-recommended insertion depth before tightening. Confirm spindle rotation is set to right-hand before engaging the cut. Inspect the cutting edge for chips or damage before each use, and verify runout with a dial indicator when tight tolerances are required.