ESCO TOOL
I.D. Clamping Tube & Pipe Beveling Machine
MILLHOG SERIES

Mini MILLHOG

Imperial Range1.25" I.D. – 6.625" O.D.
Metric Range31.8mm I.D. – 168.3mm O.D.

The Mini MILLHOG is a ruggedly built beveling machine with a spur gear drive train that bevels all tube and pipe alloys to 6.625" O.D. Its combination of rpm and torque makes it ideal for tube stub removal and tube overlay/cladding removal.

The Mini MILLHOG is a ruggedly built beveling machine with a spur gear drive train and bevels all tube and pipe alloys to 6.625″ O.D. Its combination of rpm and torque also make it ideal for tube stub removal and tube overlay and cladding removal. All clamping components including the draw rod are heat treated and provide the strength to rigidly secure the tool on the inside diameter of the tube or pipe.

The EscoLock cutter blade holding system securely holds the cutters in the tool post and helps reduce chatter and produce a clean, continuous chip on most pipe and tube alloys without cutting fluids. Easy to operate and maintain, this tool delivers huge performance in a small package and is available with either a pneumatic or electric motor.

Mini MILLHOG - Pneumatic
Mini MILLHOG video
Technical Data

Specifications

SpecificationValue
Working Range 1.25" I.D. – 6.625" O.D.
Blade Series M-Series Blades
Min. Width 5.3"
Head Length 14.25"
Pneumatic — Power 1.25 hp
Pneumatic — Air Pressure 90 psi
Pneumatic — Air Flow 40 cfm
Electric — Power 1800 W
Electric — Voltage 120 V
Electric — Frequency 50/60 Hz
Cutterhead Speed — Pneumatic 55 rpm
Cutterhead Speed — Electric 19–66 rpm
Working Weight — Pneumatic 27.5 lbs
Working Weight — Electric 38.8 lbs
Shipping Weight — Pneumatic 65 lbs
Shipping Weight — Electric 75 lbs
Shipping Dimensions — Pneumatic 17" × 31" × 6"
Shipping Dimensions — Electric 24" × 20" × 7"
What's Included

Available Kits

Basic

M-200
(1) Motor and gear drive assembly (specify motor)
(1) Feed mechanism
(1) Mandrel 1.8" (42.7mm)
(1) Draw rod assembly
(1) Tool post 6.625" (168.3mm)
(2) Clamp rib/pad sets, choice of M-01 through M-05, M-08, M-011 (specify)
(1) Carrying case
(1) Operating and maintenance instructions
Pneumatic motor add-on: 1/2" hose with filter, oiler, and 3/8" coupler

Complete

M-300
(1) Motor and gear drive assembly (specify motor)
(1) Feed mechanism
(1) Mandrel 1.8" (42.7mm)
(1) Draw rod assembly
(1) Tool post 6.625" (168.3mm)
(7) Clamp rib/pad sets (M-01 through M-05, M-08, M-011)
(1) Carrying case
(1) Operating and maintenance instructions
Pneumatic motor add-on: 1/2" hose with filter, oiler, and 3/8" coupler

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 (1.25" / 31.8mm) — M-240

The M-240 mandrel kit is designed to fit in the Mini MILLHOG gear head and will allow it to fit in tube or pipe with a 1.25" (31.8mm) I.D. This kit works with both Cutterhead options and comes with everything needed to assemble. Clamping range of this mandrel kit is from 1.25" (31.8mm) I.D. to 1.925" (48.9mm) I.D.

Membrane Removal Head — See size chart

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

Overlay Removal Head — See size chart

Cutting head designed to remove the membrane and overlay on boiler panels coated with overlay material. Uses the same 8mm insert as the membrane heads. A specific base head is required for mounting. Slightly smaller circumference than membrane heads forces the inserts under hard material.

Reference Data

Reference Charts

Clamp Rib Chart — Mini MILLHOG

Mandrel Clamp Rib Set I.D. Range (in) I.D. Range (mm)
Optional 1.25" (31.8mm) H-01 1.250 – 1.600 31.8 – 40.6
H-02 1.525 – 1.925 38.8 – 48.9
Standard 1.8" (45.7mm) M-01 1.800 – 2.270 45.8 – 57.6
M-02 2.240 – 2.695 56.9 – 68.4
M-03 2.665 – 3.120 67.7 – 79.2
M-04 3.050 – 3.500 77.4 – 88.9
M-02 & M-05 3.415 – 3.865 86.7 – 98.1
M-03 & M-05 3.780 – 4.230 96.0 – 107.4
M-04 & M-05 4.145 – 4.595 105.3 – 116.7
M-02 & M-08 4.510 – 4.960 114.5 – 126.0
M-03 & M-08 4.875 – 5.325 123.8 – 135.2
M-04 & M-08 5.240 – 5.690 133.1 – 144.5
M-02 & M-11 5.605 – 6.055 142.3 – 153.8
M-03 & M-11 5.970 – 6.420 151.6 – 163.0

Cutterhead Chart — Mini MILLHOG

Mandrel Cutterhead Size (in) Cutterhead Size (mm) Cutterhead Part #
Optional 1.25" (31.8mm) & Standard 1.8" (45.7mm) 6.625 168.3 M-68
4.5 114.3 MMB-113
See It In Action

Videos

Technical Resources

Resources

Get Started

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for the Mini 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

Need the Mini MILLHOG?

Get a custom quote for purchase or rental. Our team will help configure the right kit for your application.

(800) 343-6926