Right Angle I.D. Clamping End Prep Tool .75” I.D. to 4.5” O.D. 19.1 mm I.D. to 114.3 mm O.D.

Built for boilermakers, handles hard alloys, and fits between tubes for single tube removal

Key Features

A heavy duty ratchet wrench and knurled knob allows easy clamping and is perfect for limited access areas
Mounts rigidly to produce a clean, continuous chip
Requires no cutting lubricant
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 requires a minimum of 2-5/8” to fit between tubes.

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 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.

The “Wart” MILLHOG® is also available with a number of accessories to accommodate more specific end prep application needs.

Kit No.	Description
H-200/ H-200E	“Wart”/Electric “Wart” Millhog basic kit for 1-1/4” I.D. to 4-1/2” O.D.
	Kit Includes: Pneumatic motor and gear drive OR Electric motor and speed reduction gear drive Feed mechanism Hose, 1/2” w/filter, oiler & 3/8” coupler Draw rod wrench assembly (1) clamp rib set, specify size (1) clamp pad set, specify size Allen wrench set Carrying case (WMH) (1) cutterhead, specify size Operating & maintenance instructions
H-300/ H-300E	“Wart” / Electric “Wart” Millhog, deluxe kit for 1-1/4” I.D. to 4-1/2” O.D.
	Kit Includes: Pneumatic motor and gear drive OR Electric motor and speed reduction gear drive Feed mechanism Hose, 1/2” w/filter, oiler & 3/8” coupler Draw rod wrench assembly Clamp rib & pad sets (H1–H5 & H8) (2) Cutterheads, choice of 2-5/8”, 3”, 3-1/2”, 4” & 4-1/2” Carrying case (WMH) Allen wrench set Operating & maintenance instructions
H-240	Mandrel kit, 3/4” for 3/4” I.D. to 1-1/4” I. D.
	Kit Includes: Mandrel, 3/4” Drawrod w/clamp release, wrench & actuator Cutterhead, 3/4” – 2-5/8” Clamp rib set (.750” – .905”) Clamp rib set (.875” – 1.030”) Clamp rib set (1.000 – 1.155”) Clamp rib set (1.125 – 1.280”)
H-221	Mandrel kit, 1” for 1” I.D. to 1-1/4” I. D.
	Kit Includes: Mandrel, 1” w/feed stop Clamp rib set, H-O (1.000” – 1.250”) Actuator, 1” Draw rod & stop collar
Part #	Cutterheads
CH-20	Cutterhead, 2-5/8”
CH-21	Cutterhead, 3”
CH-22	Cutterhead, 3-1/2”
CH-23	Cutterhead, 4”
CH-24	Cutterhead, 4-1/2”
Spares for clamp ribs
H-11	Actuator, roll pin
H-12	Actuator, 1.250”
H-12A	Actuator, 1”
H-14A	Spring, clamp rib H-00
H-14B	Spring, clamp rib H1–H4
Just want the electric motor?
H-201E	Electric motor and speed

Specifications for “Wart”and “Electric Wart” MILLHOG®
Working Range:	3/4” (19.1 mm) I.D.to 4-1/2” (114.3 mm) O.D.
Motor, pneumatic/electric	1-1/4 h.p. (.932 kw)
Power Requirements	120 volt 12 amp 60 cycle or 220 volt 6.5 amp 50 cycle
Air Pressure	90 psi.(6.2 bar)
Air Volume	40 cfm (1133 It/min.)
Speed	180 RPM (electric speed variable up to 180 RPM)
Minimum Clearance	2-5/8” (66.68 mm)
Head Length	14-1/2” (368.3 mm)
Working Weight	19 lbs. (8.7 kg)
Shipping Weight	Basic: 55 lbs. (25 kg) Deluxe: 63 lbs. (28.6 kg)
Shipping Dimensions	24” x 20” x 7” (610 mm x 508 mm x 178 mm)
Manufacturer reserves the right to change specifications without notice.

“Wart” MILLHOG® clamp rib selector
Item No.	Description	I.D. Range (in.)	I.D. Range (mm)	Mandrel Size
G-03	Clamp rib set	.750 – .905	19.1 – 22.9 5/8"	(15.9 mm)
G-04	Clamp rib set	.875 – 1.030	22.3 – 26.1 5/8"	(15.9 mm)
G-05	Clamp rib set	1.00 – 1.155	25.4 – 29.3 5/8"	(15.9 mm)
G-06	Clamp rib set	1.125 – 1.280	28.6 – 32.5 5/8"	(15.9 mm)
H-00	Clamp rib set	1.000 – 1.300	25.4 – 33.0	1" (25.5mm)
H-01	Clamp rib set	1.250 – 1.600	31.8 – 40.6	1-1/4" (31.8mm)
H-02	Clamp rib set	1.525 – 1.925	38.8 – 48.9	1-1/4" (31.8mm)
H-03	Clamp rib set	1.850 – 2.250	47.0 – 57.2	1-1/4" (31.8mm)
H-04	Clamp rib set	2.175 – 2.575	55.3 – 65.4	1-1/4" (31.8mm)
H-02 & H-05	Clamp rib & pad set	2.500 – 2.900	63.5 – 73.7	1-1/4" (31.8mm)
H-03 & H-05	Clamp rib & pad set	2.825 – 3.225	71.8 – 81.9	1-1/4" (31.8mm)
H-04 & H-05	Clamp rib & pad set	3.150 – 3.550	80.0 – 90.2	1-1/4" (31.8mm)
H-02 & H-08	Clamp rib & pad set	3.475 – 3.875	88.3 – 98.4	1-1/4" (31.8mm)
H-03 & H-08	Clamp rib & pad set	3.800 – 4.200	96.6 – 106.6	1-1/4" (31.8mm)
H-04 & H-08	Clamp rib & pad set	4.125 – 4.525	104.8 – 114.9	1-1/4" (31.8mm)

See below for other products related to the Wart Millhog®

Wart Millhog Kits

Blades for the Wart Millhog

Cutterheads for the Wart Millhog

Parts for the Wart Millhog

Air Motor Parts for the Wart Millhog

3/4 inch Mandrel Kit Parts for the Wart Millhog

1 inch Mandrel Kit Parts for the Wart Millhog

Air Hose Parts for the Wart Millhog