2 available at time of listing. This listing is for 1 item.
The HEULE COFA12/31.5 is a highly specific configuration of the COFA 12 series, meaning it is engineered for a 31.5 mm minimum hole diameter.
Technical Specifications
- Minimum Hole Diameter: 31.5 mm (1.24 inches).
- Maximum Cutting Diameter: 32.9 mm (1.295 inches), giving you a maximum deburring edge/chamfer radial capacity of about 0.7 mm per side.
- Tool Body Diameter: 31.3 mm (designed to pass cleanly through the 31.5 mm bore without scraping the walls).
- Shank Diameter: Standard configurations feature a 20 mm straight steel shank.
- Blade Setup: Utilizes a C-series separate blade holder cassette (typical for larger COFA 6 through 12 sizes) holding a spring-loaded replaceable carbide blade.
Pricing Information
Because this is one of the largest sizes in the standard COFA 12 line, it costs more than the smaller baseline models:
- Factory New: Authorized tool suppliers like Next Industries list the complete COFA12/31.5 tool assembly (with a pre-installed carbide blade) at roughly $723.00 to $728.00.
- Common Variants: The pricing is generally identical whether you select the -S variant (standard soft/medium spring pressure) or the -Z variant (stiffer spring pressure for tough materials like stainless steel or alloyed steels).
Tool Functionality
Like other tools in the
HEULE COFA lineup, this unit is designed for high-efficiency
CNC machining environments. It clears the entry burr, collapses its blade mechanically inside the 31.5 mm hole to protect the bore surface, and then springs back out to deburr the backside exit edge in a single, continuous spindle cycle.