ESCO TOOL
Tube & Pipe Beveling Tool
MILLHOG SERIES

GROUND MILLHOG

Imperial Range0.5” I.D. - 2.25” O.D.
Metric Range12.7mm I.D. - 57.2mm O.D.

The Ground MILLHOG is a right angle, I.D. clamping beveling machine that is only 1.5in (38.1mm) wide and fits between boiler water wall tubes for beveling a single tube and other boiler tube applications with restricted access. The Ground MILLHOG is made of high quality treated materials for durability. Proprietary bearings support heavy duty gears for smooth operation on the toughest applications. Patented push-pull clamp and release system with permanently attached wrenches eliminate the possibility of loose parts separating from the tool. This high performance machine utilizes the EscoLock wedge style blade lock system and TiN coated blades for chatter-free beveling.

The Ground MILLHOG is a right angle, I.D. clamping beveling machine that is only 1.5″ (38.1mm) wide and fits between boiler water wall tubes for beveling a single tube and other boiler tube applications with restricted access. The Ground MILLHOG is made of high quality treated materials for durability. Proprietary bearings support heavy duty gears for smooth operation on the toughest applications.

Patented push-pull clamp and release system with permanently attached wrenches eliminate the possibility of loose parts separating from the tool. This high performance machine utilizes the EscoLock wedge style blade lock system and TiN coated blades for chatter-free beveling.

GROUND MILLHOG - Pneumatic
GROUND MILLHOG video
Technical Data

Specifications

SpecificationValue
Working Range 0.5" I.D. – 2.25" O.D.
Blade Series G-Series Blades
Width 1.5"
Width (M/O Heads) 1.875"
Length 14"
Power (Pneumatic) 1.07 hp
Power (Electric) 950 W
Power (Battery) 18 V — 5.2 ah
Input (Pneumatic) 90 psi
Input (Electric) 120 V
Air / Frequency (Pneumatic) 35 cfm
Air / Frequency (Electric) 50/60 Hz
Cutterhead Speed (Pneumatic) 125 rpm
Cutterhead Speed (Electric) 12–63 rpm
Cutterhead Speed (Battery) 49 rpm
Working Weight (Pneumatic) 12.7 lbs
Working Weight (Pneumatic) 14.1 lbs
Working Weight (Pneumatic) 14.6 lbs
Shipping Weight (Pneumatic) 40 lbs
Shipping Weight (Pneumatic) 42 lbs
Shipping Weight (Pneumatic) 46 lbs
What's Included

Available Kits

Basic

G-200
(1) Motor and gear drive assembly (specify motor)
(1) Feed mechanism
(1) Mandrel 0.625" (15.9mm)
(1) Draw rod assembly
(1) Cutterhead (see cutterhead chart for options)
(1) Clamp rib set, choice of G-02A through G-13 (specify)
(1) Carrying case
(1) Operating and maintenance instructions
Pneumatic motor add-on: 1/2" hose with filter, oiler, and 3/8" coupler
Battery motor add-on: Two 5.2ah Li-Ion batteries and one charger

Complete

G-300
(1) Motor and gear drive assembly (specify motor)
(1) Feed mechanism
(1) Mandrel 0.625" (15.9mm)
(1) Draw rod assembly
(1) Cutterhead 1.5" (38.1mm)
(1) Cutterhead 2.25" (57.2mm)
(12) Clamp rib sets (G-02A through G-13)
(1) Carrying case
(1) Operating and maintenance instructions
Pneumatic motor add-on: 1/2" hose with filter, oiler, and 3/8" coupler
Battery motor add-on: Two 5.2ah Li-Ion batteries and one charger

Rental

Rental tool kits are configured per job — contact ESCO for a custom rental package built for your specific application.

Rental tool kits are setup and packaged to meet your specific job and application requirements. Your tool arrives ready to go with only the parts necessary for your job.

Learn About Rentals →
Add-Ons

Accessories

Mandrel Kit (0.5" / 12.7mm) — G-175

The G-175 mandrel kit is designed to fit in the Ground gear head and will allow it to fit in tube with a 0.5" (12.7mm) I.D. This kit comes with a specific cutterhead that will fit the smaller 0.5" (12.7mm) shaft along with the draw rod assembly and G-01A ribs. Clamping range on this mandrel kit is from .5" (12.7mm) I.D. to .655" (16.6mm).

Air Clamp — G-270

Air Clamp for the Ground rigidly clamps the tool to the pipe using an air clamp to pull the draw rod instead of the manual clamp wrench. With the flip of a switch, the tool can be clamped or released for high production and reduced cycle times. This accessory is only available with the pneumatic motor.

Right Angle Drive — G-290

When space is not a luxury, the Ground can be fitted with the Right Angle Drive so the motors can be mounted to either side, or up/down. Like all of our tools, the Right Angle Drive is constructed out of precision machined components and is easy to assemble with all three motor options.

Membrane Removal — Dependent on size (see size chart)

Cutting head designed to remove the membrane between tubes on a boiler panel. Membrane heads use MRB-8 inserts, an 8mm carbide bit, to remove material (same insert for Overlay heads). A specific base cutter head is required for mounting.

Overlay Removal — Dependent on size (see size chart)

Cutting head designed to remove the membrane and overlay on a boiler panel that has been coated with overlay material. Uses the same 8mm insert as the membrane heads to remove material. A specific base head is required for mounting. Slightly smaller circumference compared to the membrane heads forces the head under hard material.

Reference Data

Reference Charts

Clamp Rib Chart — Ground MILLHOG

Choose the right clamp rib set for your tube I.D. range.
Mandrel Clamp Rib Set I.D. Range (in) I.D. Range (mm)
Optional 0.5" (12.7mm) G-01A .500 – .655 12.7 – 16.6
Standard 0.625" (15.9mm) G-02A .625 – .780 15.9 – 19.8
G-03A .750 – .905 19.1 – 22.9
G-04 .875 – 1.030 22.3 – 26.1
G-05 1.000 – 1.155 25.4 – 29.3
G-06 1.125 – 1.280 28.6 – 32.5
G-07 1.250 – 1.405 31.8 – 35.6
G-08 1.375 – 1.530 35.0 – 38.8
G-09 1.500 – 1.655 38.1 – 42.0
G-10 1.625 – 1.780 41.3 – 45.2
G-11 1.750 – 1.905 44.5 – 48.3
G-12 1.875 – 2.030 47.7 – 51.5
G-13 2.000 – 2.155 51.0 – 54.7

Cutterhead Chart — Ground MILLHOG

Mandrel Cutterhead Size (in) Cutterhead Size (mm) Cutterhead Part #
Optional 0.5" (12.7mm) 1.50 38.1 G-206
Standard 0.625" (15.9mm) 1.50 38.1 G-23
2.00 50.8 G-24
2.25 57.2 G-25
See It In Action

Videos

Ground Demo

Ground Demo
Technical Resources

Resources

Get Started

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for the GROUND MILLHOG

Whether you're looking to purchase, rent, or need help sizing the right tool — our team is ready to help.

  • Free application engineering support
  • Purchase and rental programs available
  • Made in the USA — ships from Holliston, MA
  • Most quotes returned within 1 business day

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(800) 343-6926