
HEULE Precision Tools
131 Commerce Drive
Loveland
,
OH
45140
US
Connect
- Visit Company Website
- 513-860-9900
- Contact
DEFA The Adjustable Chamfering Tool
- Controlled chamfers over a range of adjustments
- Chamfering thickness can be infinitely adjusted directly on the tool, depending on the bore dimension
- No reversing the spindle or indexing the work piece saves cycle time
- Front and back or only back chamfering of bores in hard-to-machine or highly burr-forming materials
- Ideal for Inconel and other exotic materials
- Dual cutting system for machining bores with longitudinal grooves, cross-bores and open bores with discontinuous cut
- Exchangeable carbide blade with material-specific coating
- Blade geometry has a sliding surface that allows cutting chamfers without damage to the bore surface or of the thread during penetration
- Widely used by the world's leading aerospace manufacturers
Available from stock for immediate delivery
in sizes
from 4 mm-36.2 mm (.157"-1.425")
for front and back cutting or back cutting only geometry
A Message from HEULE Precision Tools
As Seen In Modern Machine Shop

Drilling and Chamfering Tool Solves Machine Shop's Vexing Problem
An oil & gas part with a lot of holes required that Utex use two different tools to ensure burr-free inner and outer diameters. With Heule’s Vex-S tool, the shop realized time savings per cycle of an entire minute by performing drilling and chamfering in a single step.

Back-Spotfacing Tool Reaches Difficult Areas
Eastec 2019: Heule’s BSF tool is engineered for automated, high-volume back-spotfacing applications to save time and cost.

November 2018 Product Spotlight: Cleaning and Deburring
This month’s Modern Equipment Review Spotlight focuses on equipment used to finish parts by removing burrs, oils and other contaminants.

Swiss Family Heule Welcomes Questions and Discussion
When entering a booth at IMTS with a mission to learn more about a particular technology or ask a specific question, it is always comforting to be greeted by welcoming booth staff who are knowledgeable as well.

Tools Deburr Uneven, Intersecting, Interior Bore Edges
IMTS 2018: Heule Tool’s COFA-X tooling system is designed to remove burrs from uneven, interior bore edges with large intersections, such as valves, fittings and hydraulic manifolds.

Heule North America Celebrates 30 Years in Operation
On its 30th anniversary, Heule North America celebrated by inviting sales agents, customers, distributors, friends and family to an open house.

Back-Spotfacing Tool Frees Production from Costly Bottlenecks
By removing the need to detach and reattach the cutting head in a traditional back-spotfacing process, a cutting tool from Heule saved Sicom Industries two to three hours per part.
Heule Tool Launches New Website
The site includes a case studies section and pages dedicated to specific industries with the goal of improving product education and purchasing decisions.

Tooling Removes Burrs from Cross Holes
Heule Tool introduces its COFA-X tooling, said to be the first tooling system for removing burrs consistently from interior uneven bore edges with large intersections

Deburring Tools Come in Four Application-Specific Versions
Heule Tool’s X-Bore tooling for the automated deburring of cross bores is available in four chipmaking tool versions to address four different challenges of deburring: Cofa, Cofa-X, Main Bore Tool and Cross Bore Deburring Tool.

Tool Performs Counterboring, Spotfacing in Difficult-to-Access Areas
Heule Precision Tools’ BSF tool for automated, high-volume back-spotfacing and counterboring enables a counterbore ratio of 2.3×D.

Drilling, Back-Spotfacing Tools Highlighted
Heule Tool Corp. covers its full product line in a 228-page catalog that includes technical data, illustrations, programming and instructional information, as well as application reference material.

Micro-Carbide Tools for Deburring
Heule Precision Tools offers a catalog on its Micro Cofa series of front and back universal deburring tools.

See a Quick Way to Deburr Holes in Contoured Surfaces
This video shows a device that enables machine tools to quickly deburr both sides of through holes in elliptical and contoured surfaces.

A Quick Way to Deburr Holes in Contoured Surfaces
This video shows a device that enables machine tools to quickly deburr both sides of through holes in elliptical and contoured surfaces.

Micro Snap Catalog Supplement
Heule Tool Corporation offers a catalog supplement for the Micro Snap front- and back-chamfering tool, which is available in various sizes starting at 2.0 mm.

Front and Back Chamfering Tool for Small Holes
The Micro Snap series of carbide deburring tools is suited for all-purpose, single-pass, front and back deburring and chamfering of through holes measuring between 0.079" and 0.197" (2 and 5 mm).

Drill And Chamfer In A Single Operation
The Vex-S drilling and chamfering tool combines the company’s Snap chamfering system with the Vex twist drill in order to drill and front/back chamfer a through-hole in a single operation. The combination tool offers a solid carbide, replaceable twist drill tip with the company’s Vex cutting geometry, which is desi