ESCO Tool MILLHOG SERIES, GROUNDHOG MILLHOG Operating Instructions Manual

Operating Instructions Revision: GRO-001

Factory: Agent:
ESCO Tool Company, a Unit of ESCO Technologies, Inc.
75 October Hill Road Ste A, Holliston, MA 01746 USA
Tel [phone] | Fax [phone]
Email: [e-mail] | Website: www.escotool.com

Millhog Series - “Ground” Millhog

MILLHOG SERIES: GROUNDHOG MILLHOG

- (Includes pneumatic and elec t r i c m o tors)

- 90 PSI (6.2 BAR) INLET PRESSURE

- 120/230V AC FOR ELECTRIC MOTO R S

DISCONNECT AIR SUPPLY BEFORE SERVICING

UNDERSTAND ALL INSTRUCTIONS BEFORE USING

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 1
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

ESCO Tool Guarantee

Guarantee: The manufacturer guarantees its products to be free from defects in material or workmanship for a
period of one year from date of shipment from its factory. Said guarantee will not apply if equipment is used in
conditions of service for which it is not recommended. The manufacturer is not responsible for damage to its
products through improper use, physical damage, poor operating practice, or normal wear.

If any device is found unsatisfactory under the guarantee, the buyer must notify ESCO Tool in writing and after
receipt of shipping instructions, buyer must return it directly to ESCO Tool, 75 October Hill Road, Holliston,
Massachusetts 01746, USA, shipping charges prepaid. Such equipment will be replaced or put in satisfactory
operating condition, free of all charges except transportation. The correction of any factory defect by repair or
replacement by the manufacturer shall constitute fulfillment of all obligations to the purchaser.
Manufacturer's guarantee is void if unauthorized repairs are made to its products.

Manufacturer shall not be liable for consequential damage in case of failure to meet the conditions of any
Guarantee or Shipping Schedule, nor will claims for labor, loss of profit, repairs, or other expenses incidental to
replacement be allowed.

No other representations, guarantees or warranties, expressed or implied, are made by the manufacturer in
connection with the manufacture and sale of its equipment.

Hold Harmless Agreement

Customer agrees to defend, indemnify and hold ESCO Tool, its owners, agents, officers, and/or employees free

and harmless from and against any and all claims, liabilities, losses, costs and out of pocket expenses (including
attorneys fees) arising out of, or in connection with the ESCO Tool equipment, its use or transportation, or out
of operations conducted by customer, its agents, employees, contractors, representatives, guests or invitees,
including, but not limited to, active and/or passive negligence.

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 2
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Contents

INSTRUCTION FOR PUTTING INTO USE ................................................................................................................................... 4

UNPACKING ................................................................................................................................................................................... 4

AIR SUPPLY .................................................................................................................................................................................... 4

ILLUSTRATED DESCRIPTION OF FUNCTION ............................................................................................................................................. 4

LIMITATION ON AMBIENT CONDITIONS ................................................................................................................................................ 5

LIST OF CONTENTS ........................................................................................................................................................................... 5

SAFETY PRECAUTIONS ............................................................................................................................................................ 5

PRECAUTIONS AND USE OF PERSONAL PROTECTIVE EQUIPMENT, EYE PROTECTION ........................................................................................ 5

EXPLANATION OF SYMBOLS ............................................................................................................................................................... 6

DISCLAIMER ................................................................................................................................................................................... 6

OPERATING ERGONOMICS ................................................................................................................................................................ 6

OPERATING INSTRUCTIONS ................................................................................................................................................... 7

IDENTIFICATION OF OPERATING CONTROLS AND THEIR USE ...................................................................................................................... 7

SELECTION OF PROPER TOOLING ......................................................................................................................................................... 7

Clamp rib selection ................................................................................................................................................................ 7

Cutterhead selection .............................................................................................................................................................. 7

Cutting blade selection .......................................................................................................................................................... 8

INSTALLATION OF PROPER TOOLING .................................................................................................................................................... 8

Clamp rib installation ............................................................................................................................................................ 8

Cutterhead removal and installation ..................................................................................................................................... 8

Cutting blade removal and installation ................................................................................................................................. 8

MOUNTING THE TOOL TO THE WORK .................................................................................................................................................. 8

POWER CONNECTION....................................................................................................................................................................... 8

OPERATION OF TOOL ....................................................................................................................................................................... 9

TOOL LIMITS .................................................................................................................................................................................. 9

Size limits ............................................................................................................................................................................... 9

Material limits ....................................................................................................................................................................... 9

MAINTENANCE AND SERVICING ............................................................................................................................................. 9

REGULAR CLEANING AND LUBRICATION ................................................................................................................................................ 9

USER SERVICE ............................................................................................................................................................................... 10

SERVICING BY MANUFACTURER OR AGENT .......................................................................................................................................... 10

CLAMP RIB AND PAD SELECTOR CHART ............................................................................................................................... 11

PARTS LIST AND DRAWING .................................................................................................................................................. 12

GEAR ASSEMBLY ........................................................................................................................................................................... 12

AIR MOTOR ................................................................................................................................................................................. 14

ELECTRIC MOTOR .......................................................................................................................................................................... 16

1/2" MANDREL ............................................................................................................................................................................ 18

CUTTERHEADS .............................................................................................................................................................................. 19

CUTTING BLADES .......................................................................................................................................................................... 20

AIR HOSE..................................................................................................................................................................................... 22

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 3
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Instruction for putting into use

Unpacking

1. Use caution when handling the tool, cutting blades are sharp. Typically they are protected, however,

exposed blades can cause injury.

2. Clean any excess oil, grease or rust preventive from the surface of the tool.

Air supply

1. Recommended air pressure, 90 psi (6.2 bar)

2. Recommended air volume, 25 cfm (708 lt/min.)

3. Clean, moisture free air is essential for trouble free operation.

4. Oil laden operating air should be used. Use a light weight air tool oil (s.a.e.10).

5. A hose whip with filter and lubricator is provided with each tool. Be sure air filter is clean and lubricator is

full before use. For lubricator adjustment instructions see 4a.

6. For electric motors
a. Rated Voltage 230/120v ac
b. Power input 950 w
c. Frequency 40-60 Hz

Illustrated description of function

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 4
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Limitation on ambient conditions

1. In damp, moist or humid air, extra precaution must be taken in order to provide the tool with moisture

free, oil laden air.

2. In temperatures below 32 degrees Fahrenheit (0 Celsius) a lubricant with antifreeze, such as Marvel Air-

Tool Oil, must be used.

3. Do not use the electric motor in wet or excessively humid ambient conditions

List of contents

Kit contains:

 Motor & gear drive assembly
 Draw rod assembly
 Mandrel, .625”
 Hose, 1/2” w/ filter
 Carrying case
 Allen wrench
 Operating instructions
 One or more clamp rib sets
 One or more cutterheads

Safety precautions

Precautions and use of personal protective equipment, eye protection

1. Power tools are not insulated for coming into contact with electric power sources.

2. Tool must not be used in an explosive atmosphere.

3. Do not use tool in a manner other than stated. Use other than stated in the instructions is forbidden.

4. For air powered tools, use valved, quick connect couplers to avoid an unrestrained compressed air hose

after disconnecting.

5. Use care regarding the drawing in or trapping long hair, loose clothing, etc.

6. Cover all exposed skin before operating. Cutting blades are sharp and produce hot chips. Both can cause

injury.

7. Do not connect power source until tool is securely fastened to the pipe or tube.

8. Use caution when handling, disconnect power before removing from work, changing blades, performing

maintenance or breaking down.

9. Personal protective garments should include but not be limited to.
a. Safety glasses
b. Work gloves
c. Work boots, or shoes
d. Protective clothing
e. Hearing protection when operator is exposed to long periods of use.

10. Have all nearby persons wear safety glasses with side shields.

11. Chips can be hot and sharp. Be careful when clearing from tool.

12. Moving and stationary parts can pinch or cause serious injury. Pay extra attention to rotating cutting

blades as they cannot be adequately guarded.

13. During use, machinery may separate, lurch or fall.

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 5
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Explanation of symbols

Caution (refer to accompanying documents).

Safety glasses must be worn.

Protective gloves, cutting blades and chips can be hot and sharp.

Work boots, or shoes

Protective clothing

Hearing protection

Pinch points

Disclaimer

1. If the equipment is used in a manner not specified by ESCO Tool, the protection provided by the

equipment may be impaired.

Operating ergonomics

1. Tool must be mounted at a reasonable working height.

2. Tool may be used in any orientation.

3. Operator must be in a position not to be injured as the machinery may separate, lurch or fall. Operator

must have both feet on a stable platform. Reaching or leaning are not acceptable operating ergonomics.

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 6
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Operating instructions

Identification of operating controls and their use

Feed wrench

 Used to advance and retract the cutting blade

from the work.

Draw rod nut

 Activates draw rod and actuator.

Actuator

 Holds and aligns the clamp ribs and pads with

mandrel.

Draw rod

 Connects the actuator and draw rod nut.
 Turning draw rod wrench clockwise pulls

actuator towards mandrel and expands clamp
ribs and pads.

Clamp release

 Pushes actuator away from mandrel.
 Turning draw rod wrench counter-clockwise

pushes actuator away from mandrel and
relaxes clamp ribs.

Draw rod stop collar

 Prevents draw rod, actuator and clamp rib

becoming separated from mandrel.

Cutterhead

 Rotates and holds the cutting blade.

Cutting blade

 Purpose: to machine end preparations on tube

or pipe. b. Consumable item, available in many
sizes and configurations.

Blade lock

 Secures the cutting blade to cutterhead.

Clamp ribs

 Secures tool to tube or pipe inside diameter.
 Come in sets of three
 Available in many sizes, see accompanying

clamp rib chart.

Mandrel

 Provides torque acceptance for entire tool.
 Allows axial movement of tool.
 Provides point of rotation for cutterhead.
 Provides reaction surface for clamp ribs.

Throttle lever

 Activates the cutterhead.
 Requires deliberate action by the operator to

activate the cutterhead

 Actuating lever starts tool.
 Release of lever stops tool.

Nipple air inlet

 Accepts valved quick connect coupler for

connecting air supply. b. Always disconnect air
supply before installing, changing or securing
blades, adjusting, moving, or breaking down.

Air motor

 Provides power to gear head.

Gear head

 Rotates cutterhead.
 Axially moves on mandrel.

Selection of proper tooling

Clamp rib selection

1. Measure inside diameter of tube or pipe. Or using the outside diameter and minimum wall thickness,

calculate the inside diameter.

2. Using the inside diameter and the accompanying clamp rib chart select the proper clamp rib set.

3. Please note G-4 - G-13 uses clamp rib springs while G1A, G2A, G3A use bands

Cutterhead selection

1. Measure the outside diameter of the tube or pipe.

2. Select a cutterhead that either matches the outside diameter or is at least one size larger than the outside

diameter.

3. Sizes are: 1-1/2”, 2”, 2-1/4”

4. Larger cutterheads may be used, subject to mechanical restrictions.

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 7
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Cutting blade selection

1. Measure the wall thickness of the tube or pipe.

2. Select a blade that is wider than the wall thickness.

3. Standard sizes are: 3/8”, 5/8”. Consult factory for other widths.

4. Cutting blade configuration should be matched to your welding specification.

5. Consult factory for special applications such as: counter boring, seal weld removal, “J” preps, etc.

Installation of proper tooling

Clamp rib installation

1. Remove stop collar (G-65), using draw rod wrench (G-64) feed the draw rod assembly from mandrel (G-

20).

2. Slide clamp ribs over the draw rod (G-18) with the T end of the clamp rib towards the actuator.

3. Insert the clamp rib into the slots on the actuator.

4. Inspect springs or bands, replace if stretched or damaged.

5. G1A, G2A, G3A clamp ribs use a spring steel band. G4 clamp rib uses (1) spring. G5-G13 use (2) springs.

6. Reassemble, insert draw rod assembly into mandrel and install the draw rod wrench and stop collar.

Cutterhead removal and installation

1. Remove stop collar (G-65), using draw rod wrench (G-64) feed the draw rod assembly from mandrel (G-

20).

2. Remove (2) cutterhead mounting screws (G-19).

3. Using a soft hammer, tap cutterhead to remove from bearing (G-26).

4. Select the cutterhead you want to install and align cutterhead mounting screw holes up with the drive

shaft (G-27).

5. Using the cutterhead mounting screws, evenly tighten. Be sure that the cutterhead seats evenly on the

bearing.

6. Insert draw rod assembly into mandrel using the draw rod wrench. Install the stop collar.

Cutting blade removal and installation

1. Loosen blade lock screw(s) (G-22), do not remove. If more than one blade lock screw has to be loosened

they should be loosened evenly.

2. Cutting blade must be slid to the outside of the cutterhead for removal.

3. Insert new cutting blade from the outside of the cutterhead and align so that the blade fully covers the

tube or pipe wall.

4. Be sure to tighten all blade lock screws

Mounting the tool to the work

1. Using the feed wrench extend the mandrel all the way forward (this moves clamp ribs away from

cutterhead.

2. Retract the mandrel two turns of the feed wrench.

3. Insert the clamp rib portion of the tool into the end of tube or pipe.

4. While positioning the cutting blade away, at least 1/4” from the work, tighten the draw rod wrench.

5. Be sure cutterhead can rotate freely, without coming into contact with the tube or pipe, when first

starting tool.

Power connection

1. Use the hose supplied with the tool.

2. This hose has a valved quick connect coupler which will hold back all air that is in the supply hose.
a. This feature allows the air supply to be safely removed from the tool at any time.

3. Connect the air supply.

4. For electric tools, be sure to connect the tool to a properly grounded outlet and if using an extension cord,

be sure that the extension cord is properly sized for the application. Failure to properly size an extension
cord can result in personal injury and/or harm to the electric motor

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 8
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Operation of tool

1. Engage the throttle lever (or switch) this will activate the tool.

2. Using the feed wrench advance the cutting blade towards the work.

3. Use a steady constant feed creating a continuous chip.
a. Using a constant feed allows the heat generated by the cutting action to be removed by the chip.

Heat buildup is a primary failure mode for cutting tools.

b. Engaging a rotating cutting blade with the work surface without feed (rubbing), creates excessive

heat buildup.

4. When the desired end prep is accomplished, quickly reverse the feed wrench by reversing the directional

pawl, and retract the cutting blade from the work.

5. Release the throttle lever (or switch) this will stop the tool.

6. Disconnect the power supply.

7. Release the clamp wrench and remove the tool from the work.

Tool limits

Size limits

1. Minimum inside diameter is 5/8” with standard mandrel.
a. Minimum inside diameter is 1/2” with optional mandrel.
b. Maximum outside diameter is 2-1/4”.
c. Maximum wall thickness, 5/8” with standard tooling.
d. Extremely thin walls may require special tooling to prevent deformation of diameter.

Material limits

1. Difficult materials may require the following to maximize blade life.
a. Lubrication such cutting oils, soluble oils, soapy water, plain water, etc.
b. Slow the speed of air motor, using a valve on the air supply.
c. Multiple cutting blades to balance the tool.
d. Vary feed rate, often times difficult materials respond to a heavy feed.

Maintenance and servicing

Regular cleaning and lubrication

1. Hose whip, filter and lubricator

a. Inspect filter element by removing nut from end of filter assembly.
b. If the filter is dirty or plugged replace it using filter repair kit
c. Remove filler plug from lubricator and be sure the adjusting screw is set half way between open

and closed.

d. Fill lubricator, use a light weight air tool motor oil (SAE 10).
e. For electric tools, inspect the cord for damage. If any damage is noted, the cord should be

replaced.

2. Gear housing grease
a. There is no grease fitting on rental tools. This is because of the tendency to over grease. Excess

grease can back up into the air motor and cause failure.

b. A single pump from a grease gun after every two hundred hours of use is sufficient for all tools

equipped with a grease fitting.

c. Use grease NLGI #2.

3. Lubrication for storage
a. Before putting the tool away, fill air inlet with a liberal amount of air tool oil and actuate motor

momentarily. This will distribute oil to internal motor parts, preventing rust build up.

b. Wipe tool down using soft cloth removing all dirt, grease, oil and chips.
c. Lightly coat tool with rust preventive.

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 9
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

User service

1. A qualified air tool technician can provide all service for this machine.
a. Factory service or assistance is always available, contact us at the numbers below.
b. Complete drawings and parts lists are provided in section six.

i. No special tools are required to perform complete service.

Servicing by manufacturer or agent

1. Factory service, return the tool to the Factory address listed below.

2. Agent service, if applicable return tool to the Agent listed below.
a. If unsure of Agent contact the factory.

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 10
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Clamp rib and pad selector chart

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 11
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001

Part #

Description

Part #

Description

G-01A

CLAMP RIB SET SLOTTED (.500 - .655)

G-33

DRIVEN GEAR

G-02A

CLAMP RIB SET SLOTTED (.625 - .780)

G-34

BEARING RACE

G-03A

CLAMP RIB SET SLOTTED (.750 - .905)

G-35

BEARING RACE

G-04

CLAMP RIB SET (.875 - 1.030)

G-36

ROLL PIN

G-05

CLAMP RIB SET (1.000 - 1.155)

G-37

RETAINER NUT

G-06

CLAMP RIB SET (1.125 - 1.280)

G-38

KEY SCREW

G-07

CLAMP RIB SET (1.250 - 1.405)

G-39

TORQUE KEY

G-08

CLAMP RIB SET (1.375 - 1.530)

G-40

HOUSING SCREW

G-09

CLAMP RIB SET (1.500 - 1.655)

G-41

BEARING

G-10

CLAMP RIB SET (1.625 - 1.780)

G-42

DRIVE GEAR

G-11

CLAMP RIB SET (1.750 - 1.905)

G-43

CENTER HOUSING

G-12

CLAMP RIB SET (1.875 - 2.030)

G-44

KEY

G-13

CLAMP RIB SET (2.000 - 2.155)

G-45

DRIVEN BEVEL GEAR

G-14

SPRING FOR G4-G13 RIBS

G-46

BEARING

G-14E

BAND FOR G1A SLOTTED CLAMP RIBS

G-47

HOUSING SCREW

G-14F

BAND FOR G2A, G3A SLOTTED RIBS

G-48

BUSHING

G-15

ACTUATOR ROLL PIN

G-49

"O" RING

G-16

ACTUATOR FOR.625 MANDREL

G-50

FEED WRENCH

G-17

ACTUATOR FOR.750 MANDREL

G-51

SNAP RING

G-18

DRAW ROD (FOR 1/2")

G-52

FEED ADAPTER HOUSING

G-19

CUTTERHEAD SCREW

G-53

HOUSING SCREW

G-20

MANDREL, 5/8"

G-54

FEED KNOB BALL SCREW

G-21

BLADE LOCK SCREW

G-55

FEED KNOB

G-22

BLADE LOCK 1-1/2", 2-1/4"

G-56

DRIVE BEVEL GEAR

G-23

1-1/2" CUTTERHEAD

G-57

BEARING

G-24

2" CUTTERHEAD

G-58

MOTOR ADAPTER

G-25

2-1/4" CUTTERHEAD

G-59

CLAMP RELEASE SYSTEM

G-26

CUTTERHEAD BEARING

G-60

MOTOR ADAPTER SCREW

G-27

DRIVE SHAFT

G-61

SNAP RING

G-28

BEARING RACE

G-62

SCREW

G-29

BALL BEARING (15 REQ'D)

G-63

SET SCREW

G-30

BEARING RACE

G-64

CLAMP RELEASE WRENCH

G-31

DRIVE SHAFT HOUSING

G-65

DRAW ROD STOP COLLAR

G-32

KEY

AW-01

ALLEN WRENCH SET (NOT SHOWN)

Millhog Series - “Ground” Millhog

Parts list and drawing

Gear assembly

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 12
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 13
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001

Part #

Description

Part #

Description

24-100

BEARING

24-123

ROTOR

24-101

GEAR HOUSING

24-124

BOTTOM PLATE

24-102

NYLON WASHER

24-125

PIN

24-103

SPACER

24-126

PIN

24-104

PIN

24-127

ROTOR BLADES (5/SET)

24-105

BEARING

24-128

BUSHING

24-106

TOP GEAR

24-129

BEARING

24-107

TOP GEAR SPIDER

24-130

WASHER

24-108

WASHER

24-131

SCREW

24-109

BEARING

24-132

RETAINING NUT

24-110

SNAP RING

24-133

MOTOR HOUSING

24-111

GEAR HOUSING

24-134

THROTTLE LEVER

24-112

HOUSING END NUT

24-135

THROTTLE HOUSING

24-113

BEARING

24-136

MUFFLER

24-114

RETAINING RING

24-137

COMPLETE FILTER ASSY.

24-115

LOWER GEAR SPIDER

24-137A

FILTER REPAIR KIT

24-116

PIN

24-138

RETAINING SCREW

24-117

BOTTOM GEAR

24-139

RUBBER GASKET

24-118

BEARING

24-140

REGULATOR

24-118A

BEARING SLEEVE

24-141

SPRING

24-119

WASHER

24-142

"O" RING

24-120

BEARING

24-143

AIR FLOW VALVE

24-121

TOP PLATE

24-144

VALVE BODY

24-122

AIR MOTOR CYLINDER

24-150

COMPLETE AIRMOTOR

Millhog Series - “Ground” Millhog

Air motor

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 14
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 15
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001

110V & 220V ELECTRIC MOTOR PARTS FOR GROUND MILLHOG

PART #

DESCRIPTION

PART #

DESCRIPTION

G-60

MOTOR ADAPTER SCREW

EM-04

CABLE SLEEVE

18-02C

GEAR HOUSING (ECG)

EM-05

CABLE CLIP

18-03

BEARING

EM-06

SELF TAP FILLISTER HEAD SCREW

18-04

GEAR SPIDER

EM-07

STRAND COMPLETE

18-05

PIN

EM-08

MOTOR HOUSING

18-06

BEARING

EM-09

SWITCH ROD

18-07

GEAR

EM-10

SWITCH DEADMAN

18-08

BEARING

EM-11

BALL BEARING, 6X19X6

18-09

RETAINER RING

EM-12

RUBBER BUSHING

18-10

SPACER

EM-13

BAFFLE

18-11

GEAR SPIDER

EM-14

BALL BEARING, 8X22X7

18-12

BEARING

EM-15

2 PART MOTOR CAP

18-15

BEARING

EM-16

SELF TAP FILLISTER HEAD SCREW

18-17

PIN

EM-19

BEARING FLANGE

18-18

BEARING

EM-24-110

ELECTRONIC UNIT, 110V

18-19

GEAR

EM-24-220

ELECTRONIC UNIT, 220V

18-35

CAP SCREW

EM-25

SWITCH

18-36

LOCK WASHER

EM-26-110

BRUSH HOLDER, 110V

EG-01

HOUSING SCREW

EM-26-220

BRUSH HOLDER, 220V

EG-02

HOUSING

EM-27

CARBON BRUSH SET

EG-03

PLANET CARRIER

EM-35-110

RATING PLATE

EG-04

NEEDLE ROLLER

EM-35-220

RATING PLATE

EG-05

NEEDLE ROLLER & CAGE

EM-66

BUTTING WASHER

EG-06

GEAR SET

EG-08

O-RING

EM-110

ELECTRIC MOTOR ONLY, 110V

EG-09

ADAPTER SHAFT

EM-220

ELECTRIC MOTOR ONLY, 220V

EM-01-110

ARMATURE, 110V

EGC-105

GEAR CASE ASSEMBLY

EM-01-220

ARMATURE, 220V

EGC-110

ELEC. MOTOR & GEAR CASE, 110V

EM-02-110

FIELD COIL, 110V

EGC-220

ELEC. MOTOR & GEAR CASE, 220V

EM-02-220

FIELD COIL, 220V

EM-03-110

CABLE WITH UL-CSA-PLUG, 110V

EM-03-220

CABLE W/ PLUG, 22OV

Millhog Series - “Ground” Millhog

Electric motor

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 16
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 17
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001

Part #

Description

Part #

Description

G-01A

G1A CLAMP RIB SLOTTED (.500 - .655)

G-59A

WASHER

G-14D

BAND FOR G1, G2 RIBS

G-59B

"O" RING

G-15A

ROLL PIN

G-59C

DRAW NUT

G-17A

ACTUATOR FOR 1/2" MANDREL

G-59D

RETAINER NUT

G-18A

DRAW ROD FOR 1/2" MANDREL

G-59E

FEED STOP HOUSING

G-19A

CUTTERHEAD SCREW

G-61

SNAP RING

G-21

BLADE LOCK SCREW

G-62A

CAP SCREW

G-22

BLADE LOCK FOR 1-1/2"&2-1/4"

G-63

SET SCREW

G-26A

CUTTERHEAD BEARING

G-63A

SET SCREW

G-204

1/2" MANDREL

G-64

CLAMP RELEASE WRENCH

G-206

CUTTERHEAD, 1-1/2 FOR 1/2 MANDREL

G-65A

DRAW ROD STOP COLLAR

G-59

CLAMP RELEASE SYSTEM

G-175

MANDREL KIT, 1/2" COMPLETE

Millhog Series - “Ground” Millhog

1/2" mandrel

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 18
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001

Part #

Description

Part #

Description

G-21

BLADE LOCK SCREW

G-24

2” CUTTERHEAD

G-22

BLADE LOCK FOR 1-1/2” & 2-1/4”
CUTTERHEADS

G-25

2-1/4” CUTTERHEAD

G-22A

BLADE LOCK FOR

2” CUTTERHEAD

G-206

1-1/2” CUTTERHEAD (FOR 1/2” MANDREL)
G-23

1-1/2” CUTTERHEAD

Millhog Series - “Ground” Millhog

Cutterheads

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 19
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001

GBB-1

BLADE 3/8" BEVEL TIN

GBB-2

BLADE, 5/8" BEVEL TIN

GBB-3

3/8" 30 DEGREE BEVEL BLADE

GBB-4

5/8" 30 DEGREE BEVEL BLADE

GBBP-1

5/8" 37-1/2 DEG+1/4" PEEL BACK

GCB-1

BLADE, 3/8" COUNTER BORE TIN

GCB-2

BLADE, 5/8" COUNTER BORE TIN

GCB10S-1

3/8" 10 DEGREE BORING BLADE

GCB10S-2

5/8" 10 DEGREE BORING BLADE

GCBS-1

3/8"STRAIGHT BORE 18 DEG TAPER

GCBS-2

3/8"STRAIGHT BORE 18 DEG TAPER

GJB-1

3/8" "J" BEVEL 22 DEG+3/16 RAD

GJB-2

5/8" "J" BEVEL 22 DEG+3/16 RAD

GLB-1

BLADE, 3/8" LAND TIN

GLB-2

BLADE, 5/8" LAND TIN

GLRB-1

3/8" FACING BLADE W/ OD RADIUS

GLRB-2

5/8" FACING BLADE W/ OD RADIUS

GRBB-1

3/8"37-1/2 DEGREE BORING BLADE

GRBB-2

5/8"37-1/2 DEGREE BORING BLADE

GRS-1

BLADE, 3/8" SHARPENING & TIN

GRS-2

BLADE, 5/8" SHARPENING TIN

GTSR-1

3/8" TUBE STUB REMOVAL BLADE

GTSR-2

5/8" TUBE STUB REMOVAL BLADE

GTSS-1

BLADE, 3/8" TUBE SEAT

GTSS-2

BLADE, 5/8" TUBE SEAT

Millhog Series - “Ground” Millhog

Cutting blades

Part # Description

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 20
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 21
Holliston, MA - USA | Tel [phone]

Operating Instructions Revision: GRO-001
Millhog Series - “Ground” Millhog

Air hose

ESCO Tool Company, a Unit of ESCO Technologies, Inc. 22
Holliston, MA - USA | Tel [phone]