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

Prepzilla MILLHOG

Imperial Range1.575" I.D. – 8.625" O.D.
Metric Range40mm I.D. – 219.1mm O.D.

The Prepzilla MILLHOG is smooth, quiet, and powerful — highly desired for its ability to bevel difficult pipe alloys like super duplex and P-91 quickly and efficiently.

The Prepzilla MILLHOG is smooth, quiet and powerful. It is highly desired for its ability to bevel difficult pipe alloys like super duplex and P-91 quickly and efficiently. Ruggedly designed for years of trouble free service, the Prepzilla is built with dual opposed tapered roller bearings, heat treated and hardened clamping, cutting and operational components. It can bevel pipe at any angle without cutting fluid for fast fit-up and enables precise pipe joint welds.

Prepzilla MILLHOG - Pneumatic
Prepzilla MILLHOG video
Technical Data

Specifications

SpecificationValue
Working Range 1.575" I.D. – 8.625" O.D.
Blade Series M-Series Blades
Min. Width 8.75"
Head Length 19.75"
Pneumatic — Power 2.0 hp
Pneumatic — Air Pressure 90 psi
Pneumatic — Air Flow 80 cfm
Electric — Power 1800 W
Electric — Voltage 120 V
Electric — Frequency 50/60 Hz
Cutterhead Speed — Pneumatic 34 rpm
Cutterhead Speed — Electric 9–31 rpm
Working Weight — Pneumatic 44 lbs
Working Weight — Electric 54 lbs
Shipping Weight — Pneumatic 110 lbs
Shipping Weight — Electric 120 lbs
Shipping Dimensions — Pneumatic 27" × 21" × 7"
Shipping Dimensions — Electric 27" × 21" × 7"
What's Included

Available Kits

Basic

P-200
(1) Motor and gear drive assembly (specify motor)
(1) Feed mechanism
(1) Mandrel 1.575" (40mm)
(1) Draw rod assembly
(1) Tool Post 8.625" (219.1mm)
(2) Clamp rib set, choice of P-01 through P-08 (specify)
(1) Carrying case
(1) Operating and maintenance instructions
Pneumatic motor add-on: 1/2" hose with filter, oiler, and 3/8" coupler

Deluxe

P-300
(1) Motor and gear drive assembly (specify motor)
(1) Feed mechanism
(1) Mandrel 1.575" (40mm)
(1) Draw rod assembly
(1) Tool Post 8.625" (219.1mm)
(8) Clamp rib sets (P-01 through P-08)
(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

Third Tool Post — P-20B

The Prepzilla optional third tool post attaches to the cutterhead so that a bevel, face and bore can be simultaneously performed.

Handle Assembly — P-105

The P-105 Handle assembly easily attaches to either side of the Prepzilla gear head and gives the operator a comfortable and ergonomic means of handling the tool. Featuring a spring-loaded plate, the handle retracts flat to the tool and out of the way when not in use.

Lift Ring with Spring Hanger — P-103

The Lift Ring with Spring Hanger accessory attaches to either side of the Prepzilla gear head to safely support the weight of the tool. Features a spring that allows the operator to move the tool up and down while mounting, ensuring optimal clamp rib seat.

Reference Data

Reference Charts

Clamp Rib Chart — Prepzilla MILLHOG

Mandrel Clamp Rib Set I.D. Range (in) I.D. Range (mm)
Standard 1.575" (40mm) P-01 1.575 – 2.050 40.0 – 52.1
P-02 2.025 – 2.505 51.4 – 63.6
P-03 2.475 – 2.955 62.9 – 75.1
P-04 2.925 – 3.405 74.3 – 86.5
P-02 & P-05 3.375 – 3.855 85.7 – 97.9
P-03 & P-05 3.825 – 4.305 97.2 – 109.3
P-04 & P-05 4.275 – 4.755 108.6 – 120.8
P-02 & P-06 4.725 – 5.205 120.0 – 132.2
P-03 & P-06 5.175 – 5.655 131.4 – 143.6
P-04 & P-06 5.625 – 6.105 142.9 – 155.1
P-02 & P-07 6.075 – 6.555 154.3 – 166.5
P-03 & P-07 6.525 – 6.980 165.7 – 177.3
P-04 & P-07 6.950 – 7.430 176.5 – 188.7
P-02 & P-08 7.400 – 7.880 188.0 – 200.2
P-03 & P-08 7.850 – 8.330 199.4 – 211.6
P-04 & P-08 8.300 – 8.780 210.8 – 223.0

Tool Post Chart — Prepzilla MILLHOG

Mandrel Tool Post Size (in) Tool Post Size (mm) Tool Post Part #
Standard 1.575" (40mm) 8.75 222.3 P-20
3.5 88.9 P-20B
See It In Action

Videos

Technical Resources

Resources

Get Started

Request a Quote
for the Prepzilla 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 Prepzilla MILLHOG?

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

(800) 343-6926