Wart Millhog

Source: Esco Tool
Wart Millhog
Built for boilermakers, handles hard alloys, and fits between tubes for single tube end prepping
Built for boilermakers, handles hard alloys, and fits between tubes for single tube end prepping

Key Features

  • Right angle tool rigidly mounts to tube I.D.
  • Self-centering draw rod assembly
  • Stable to produce a clean, continuous chip
  • Sealed construction permits use in any orientation
  • Simultaneously bevels, faces, and bores
  • Lightweight and requires no special training
  • Efficient chatter-free cutter blade locking design
  • Torque-free operation prevents operator fatigue
  • Low maintenance, compact, air-powered tool

Engineered For High Volume Use

The Esco "Wart" MILLHOG is a right angle, I.D. clamping end prep tool that features an efficient, low-maintenance design incorporating dual opposed tapered roller bearings. This makes the "Wart" rigid, stable and extremely durable. Built for boilermakers, there are no bushings to wear out and the sealed mandrel prevents debris from getting inside the tool, allowing it to be used in any orientation. What's more, the compact design only needs a "Dutchman" window that is 2-5/8" W x 14-1/2" head length with cutterhead.

Technical Overview

Pneumatically powered with torque-free operation like our entire MILLHOG line of pipe milling end prep tools, the "Wart" MILLHOG uses the same easy-to-index titanium nitride coated cutter blades which securely fit into our proprietary multi-angular EscoLock system. This ensures chatter-free performance and produces a clean, continuous chip without cutting oils.

Featuring an I.D. clamping system with a draw rod which expands the clamp ribs to rigidly mount the "Wart" MILLHOG, the tool centers itself automatically and uses an easy to use ratchet feed mechanism for smooth, controlled end prepping.

Capable of prepping a wide range of alloyed materials such as centrifugally cast inconel, stainless steels, and tubes with a high percentage of chrome, the "Wart" MILLHOG can perform 37 1/2° preps, "J" preps, and flat facing; or combined bevel and facing or bore on either torched cut or sawed tube ends.

Interchangeable Clamp and Rib Pads

Simple to operate, the "Wart" MILLHOG uses one mandrel for the vast majority of jobs (see clamp rib and clamp pad selector chart). All you have to do is to measure the tube I.D., select the correct ribs and/or pads and install them on the mandrel. Because they self-align, that's all there is to it. Now insert the mandrel into the tube I.D., expand the clamp ribs and/or pads and perform your end preps in seconds.

Esco Tool, 50 Park Street, P.O. Box 530, Medfield, MA 02052. Tel: 508-359-4311; Fax: 508-359-4145.