Duratech 4012 Tub Grinder User manual

0500111 • May 2018
DuraTech InDusTrIes InTernaTIonal Inc.
Po Box 1940, JamesTown, nD 58402-1940
Tel: [phone]• Fax: [phone]
www.DuraTechInDusTrIes.neT • www.hayBusTer.com
4012
Tub Grinder
Manual I: Operating Instructions
TM
Product InformatIon

Clearing the Way for a Better Tomorrow

4012
Tub Grinder
Manual 2:
Parts Reference
TM
DuraTech Industries International Inc. (DuraTech) has made every effort to assure that this manual
completely and accurately describes the operation and maintenance of the 4012™ Tub Grinders as
of the date of publication. DuraTech reserves the right to make updates to the machine from time
to time. Even in the event of such updates, you should still find this manual to be appropriate for the
safe operation and maintenance of your unit.
This manual, as well as materials provided by component suppliers to DuraTech are all considered
to be part of the information package. Every operator is required to read and understand these
manuals, and they should be located within easy access for periodic review.
is a registered trademark of Duratech Industries International, Inc. 4012 is
a trademark of Duratech Industries International, Inc.

Clearing the Way for a Better Tomorrow

i
4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
FOREWORD
Foreword
All personnel must read and understand before operating unit
DuraTech Industries International Inc. (DuraTech Industries) has made every effort
to assure that this manual completely and accurately describes the operation and
maintenance of this Industrial Grinder as of the date of publication. DuraTech
Industries reserves the right to make updates to the machine from time to time.
Even in the event of such updates, you should still find this manual to be appropriate
for the safe operation and maintenance of your machine.
This manual, as well as materials provided by component suppliers to DuraTech
Industries are all considered to be part of the information package. Every operator
is required to read and understand these manuals All manuals should be located
within easy access for troubleshooting and periodic review.
Appropriate use of the unit
This Industrial Grinder is designed to grind wood waste and other materials,
including: grass clippings, leaves, pallets, construction and demolition debris,
tree branches and tree trunks.
It is NOT designed to grind rocks, steel, concrete, or the like.
Operator protection
As with all machinery, care needs to be taken by the operator in order to insure the
safety of the operator and those in the surrounding area.
WARNING: Operators and those observing the operation of the
Industrial Grinder are required to wear head, eye, and ear protection. No
loose clothing is allowed.

ii 4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
TABLE OF CONTENTS
4012 TUB GRINDER Manual 1: Operators Instructions .... 1
Introduction ................................................................................ 2
Purpose ....................................................................................... 2
Section 1: Safety ....................................................................... 4
1.1 Safety-alert symbols ........................................................................................... 4
1.2 Operator - personal equipment ........................................................................... 6
1.3 Machine safety labels ......................................................................................... 8
1.4 Shielding ........................................................................................................... 11
1.5 Tub Grinder safety review ............................................................................... 11
1.6 Thrown objects and operator safety ................................................................ 12
1.7 Service and maintenance ................................................................................. 13
1.8 Fire Prevention ................................................................................................. 14
1.9 Fire Extinguishers ............................................................................................. 15
1.10 Towing ............................................................................................................ 16
1.11 Important safety reminders ............................................................................ 16
Section 2: Introduction ........................................................... 17
2.1 Description of the 4012 DuraTech Tub Grinders ............................................ 17
2.2 Electronic governor .......................................................................................... 17
2.3 Wet clutch ........................................................................................................ 19
2.4 Rotor ................................................................................................................ 19
2.5 Screens ............................................................................................................. 19
2.6 Tub ................................................................................................................... 20
2.7 Hydraulic cooler ............................................................................................... 20
2.8 Wet clutch cooler ............................................................................................. 20
2.9 The conveyor system ....................................................................................... 20
2.10 Tub cover (optional) ....................................................................................... 21
2.11 Grapple loader (optional) and Cab Controls ................................................... 22
2.12 4012 DuraTech Tub Grinder Electronic Engine Controls ............................... 25
2.12.1 Control panel ....................................................................................... 27
2.13 Other controls ................................................................................................. 28
Section 3: Operation ............................................................... 29
3.1 Pre-operation inspection ................................................................................... 29
3.2 Starting the Tub Grinder ................................................................................... 30
3.3 If the engine fails to start ................................................................................. 30
3.4 Throttle operation ............................................................................................. 30
3.5 Automatic engine shutdown system ................................................................. 31
3.6 Normal shutdown procedure ............................................................................ 31

iii
TABLE OF CONTENTS
4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
3.7 Emergency shutdown procedure ...................................................................... 31
3.8 Grinding ............................................................................................................ 32
3.9 Engaging the wet clutch ................................................................................... 32
3.10 Disengaging the wet clutch ............................................................................ 32
3.11 Grinding with tub cover .................................................................................. 33
3.12 Loading the tub ............................................................................................... 33
3.13 If lodging occurs while grinding ...................................................................... 33
3.14 Grinding wet material ..................................................................................... 33
3.15 Starting and stopping the belly and discharge conveyors ............................... 34
3.16 Raising the discharge conveyor ...................................................................... 34
3.17 Swinging the discharge conveyor ................................................................... 34
3.18 Operating the grinder using the remote radio option ...................................... 35
3.19 Preparing the 4012 DURATECH TUB GRINDER for transport ................. 37
3.20 Preparing the 4012 DURATECH TUB GRINDER for operation after transport ........... 38
3.21 Preparing the 4012 DURATECH TUB GRINDER for storage ................... 39
3.22 Removing the 4012 DURATECH TUB GRINDER from storage ................ 39
3.23 Installing a screen ........................................................................................... 40
3.24 Raising the tub ................................................................................................ 41
3.25 Lowering the tub ............................................................................................ 42
3.26 Parts of the electronic governor ..................................................................... 43
3.27 Operation of the electronic governor ............................................................. 44
3.28 Calibration of the electronic governor ............................................................ 45
3.29 Adjusting tub rotation speed ........................................................................... 45
3.30 Electro-hydraulic valve coil test ..................................................................... 46
3.31 Electro-hydraulic valve calibration ................................................................. 47
3.32 Adjusting the conveyor belt tension ................................................................ 48
3.33 Adjusting the conveyor belt tracking .............................................................. 49
3.34 Adjustable belly belt seals ............................................................................... 50
3.35 Belt scrapers on belly and discharge conveyors ............................................ 50
3.36 Adjusting tub chain tension ............................................................................. 51
Section 4: Engine Maintenance ............................................... 52
Section 5: General Maintenance ............................................. 52
5.1 Welding Procedure ........................................................................................... 52
5.2 Batteries ........................................................................................................... 54
5.3 Lubrication ....................................................................................................... 54
5.4 Pressure roller lubrication................................................................................. 58
5.5 Rotor bearing lubrication .................................................................................. 58
5.6 Hydraulic system .............................................................................................. 59

iv 4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
TABLE OF CONTENTS
5.7 Wet Clutch System ........................................................................................... 60
5.8 Axle, wheels and tires ...................................................................................... 62
5.9 Brake component lubrication ............................................................................ 62
5.10 Rotor bearing installation ................................................................................ 64
5.11 Hammermill maintenance ............................................................................... 68
5.12 Fixed hammer maintenance and replacement ................................................ 69
5.13 Swinging hammer replacement and maintenance .......................................... 70
Section 6: Troubleshooting the 4012 DURATECH TUB GRINDER . 73
6.1 Troubleshooting the electronic governor system .............................................. 73
6.2 General Troubleshooting ................................................................................... 77
6.3 Troubleshooting Omnex Wireless Remote Controls ......................................... 78
6.4 Troubleshooting the Caterpillar C15 Tier 1 & 2 and 3412 Tier 1 Engine ....... 81
6.5 Troubleshooting the Caterpillar C9 & C15 Tier III Engine
and the Caterpillar C27 Tier II Engine ............................................................. 82
Appendix A: Warranty .............................................................. 83
Appendix B: SPECIFICATIONS ................................................ 84
Appendix C: Operator Training Form ...................................... 86
4012 DURATECH TUB GRINDER Documentation Comment Form . 87

14012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
4012
Tub Grinder
Manual 1:
Operating Instructions
TM

24012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
Introduction
This Industrial Grinder is designed to grind wood waste and other materials, including grass clippings, leaves,
construction and demolition debris, tree branches and tree trunks It is NOT designed to grind rocks, steel, concrete, or
the like.
Purpose
The purpose of this owner’s manual is to explain maintenance requirements and routine adjustments for the most
efficient operation of your 4012 DuraTech Tub Grinder . There is also a trouble shooting section that may help in case
of problems in the field. Any information not covered in this manual may be obtained from your dealer.
SPECIAL NOTE: When reference is made as to front, rear, left hand, or right hand of this
machine, the reference is always made from standing at the rear end of the machine and
looking toward the hitch. Always use serial number and model number when referring to
parts or problems. Please obtain your serial number and write it below for your future
reference.
MODEL: 4012 DuraTech Tub Grinder SERIAL NO. ______________________
How to use this manual
Manual organization
This manual is organized into the following parts:
• Manual 1: Operating instructions explain how to set up, use and maintain the 4012 DuraTech Tub
Grinder.
• Manual 2: Parts reference contains diagrams of each assembly with the number of each part
identified. A key on the facing page contains a description of the part and the quantity used.

3
4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
Operator responsibilities
• The operator is responsible for his own safety.
• The operator is responsible for the safety of all others in the area.
• Note the important safety information in the Foreword and in Section 1, "Safety."
• Thoroughly review sections 1 through 3 which explain normal operation of the machine, and section 4 and
5 which explain maintenance requirements. These sections will function as a textbook during the dealer-
conducted training course that is required before use of the unit.
• When all primary operators have read the operating instructions and understand all information concerning
the safe operation of the unit, the dealer will be required to sign the User Training Verification Form found
in the 4012 DURATECH TUB GRINDER documentation packet.
NOTE: This form requires both the dealer's signature and the customer’s signature. The dealer is
responsible for returning the signed form to DuraTech Industries.
• Manuals for certain third-party components are provided separately. The operator must also be familiar
with their contents.
• Keep copies of all manuals in a readily-accessible location for future reference.

44012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
Section 1: Safety
Thank you for taking the time to read the operation and maintenance manual for the DuraTech Industries 4012
DuraTech Tub Grinder. Because your safety and that of others is of the utmost importance, you should familiarize
yourself with this entire manual before operating this unit.
The 4012 DURATECH TUB GRINDER incorporates a number of third party products. For example, the engine, and
wet clutch are third party products. More information about the operation and care of these products can be found in
each product’s respective manual(s). Before operating this unit, you should familiarize yourself with these manuals as
well.
Safety is an ongoing job experience, and DuraTech Industries has made every effort to make sure that the 4012
DuraTech Tub Grinder provides operator security and comfort. DuraTech Industries encourages you to bring to our
attention as quickly as possible any suggestions you may have concerning the safety of the equipment. DuraTech
Industries is dedicated to enhancing the safety of the DuraTech Industries 4012 DuraTech Tub Grinder.
This unit is supplied with an operation and maintenance manual and this manual should be kept with the unit for
periodic review by operational personnel.
Operators of the 4012 DURATECH TUB GRINDER are recommended to wear head, eye, and ear protection as well
as clothing appropriate for the application. Individuals with loose clothing, unrestrained long hair, jewelry, or other
accessories which may hang loosely away from the body should not be allowed on or near the machine.
WARNING: FAILURE TO COMPLY WITH SAFETY INSTRUCTIONS THAT FOLLOW
WITHIN THIS MANUAL COULD RESULT IN SEVERE PERSONAL INJURY OR DEATH.
BEFORE ATTEMPTING TO OPERATE THIS MACHINE, CAREFULLY READ ALL
INSTRUCTIONS CONTAINED WITHIN THIS MANUAL.
THIS MACHINE IS NOT TO BE USED FOR ANY PURPOSE OTHER THAN THOSE
EXPLAINED IN THE OPERATOR’S MANUAL, ADVERTISING LITERATURE OR
OTHER DURATECH INDUSTRIES WRITTEN MATERIAL PERTAINING TO THE 4012
DURATECH TUB GRINDER.
1.1 Safety-alert symbols
Decals are illustrated in Manual 2: Parts Reference.
The safety decals located on your machine contain important and useful information that will help you operate your
equipment safely.
To assure that all decals remain in place and in good condition, follow the instructions below:
• Keep decals clean. Use soap and water - not mineral spirits, adhesive cleaners and other similar cleaners
that will damage the decal.
• Replace all damaged or missing decals. When attaching decals, surface temperature of the machine must
be at least 40° F (5° C). The surface must be also be clean and dry.
• When replacing a machine component to which a decal is attached, be sure to also replace the decal.
• Replacement decals can be purchased from your DuraTech dealer.
( REV. 11-14 )

5
4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
DuraTech Industries uses industry accepted ANSI standards in labeling its products for safety and operational
characteristics.
DANGER: Indicates an imminently hazardous
situation that, if not avoided, will result in
death or serious injury. This signal word is to
be limited to the most extreme situations,
typically for machine components that, for
functional purposes, cannot be guarded.
WARNING: Indicates a potentially hazardous
situation that, if not avoided, could result in
death or serious injury, and includes hazards
that are exposed when guards are removed. It
may also be used to alert against unsafe
practices.
CAUTION: Indicates a potentially hazardous
situation that, if not avoided, may result in
minor or moderate injury. It may also be used
to alert against unsafe practices.
SafSaf
SafSaf
Safety-Alerety-Aler
ety-Alerety-Aler
ety-Alert Symbolt Symbol
t Symbolt Symbol
t Symbol
Read and recognize safety information. Be alert to
the potential for personal injury when you see this
safety-alert symbol.

64012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
( REV. 06-18 )
DANGER
INFORMATION
CAUTION
WARNING
This manual uses the symbols to the right to denote
important safety instructions and information.
The DANGER, WARNING and CAUTION symbols are
used to denote conditions as stated in the text above.
Furthermore, the text dealing with these situations is
surrounded by a box with a white background, will begin
with DANGER, WARNING, or CAUTION.
The INFORMATION symbol is used to denote important
information or notes in regards to maintenance and use of
the machine. The text for this information is surrounded
by a box with a light grey background, and will begin with
either IMPORTANT or NOTE.
1.2 Operator - personal equipment
THE OPERATOR
Physical Condition
You must be in good physical condition and mental health and not under the influence of any substance (drugs, alcohol)
which might impair vision, dexterity or judgment.
Do not operate a 4012 DURATECH TUB GRINDER when you are fatigued. Be alert - If you get tired while operating
your 4012 DURATECH TUB GRINDER, take a break. Fatigue may result in loss of control. Working with any
equipment can be strenuous. If you have any condition that might be aggravated by strenuous work, check with your
doctor before operating

7
4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
Proper Clothing
Clothing must be sturdy and snug-fitting, but allow complete freedom of movement.
Avoid loosefitting jackets, scarfs, neckties, jewelry, flared or cuffed pants, unconfined
long hair or anything that could become entangled with the machine.
Protect your hands with gloves when handling parts. Heavyduty, nonslip gloves improve
your grip and protect your hands.
Good footing is most important. Wear sturdy boots with nonslip soles. Steel-toed safety
boots are recommended.
To reduce the risk of injury to your eyes never operate a 4012 DURATECH TUB
GRINDER unless wearing goggles or properly fitted safety glasses with adequate top and
side protection.
Noise may damage your hearing. Always wear sound barriers (ear plugs or ear mufflers)
to protect your hearing. Continual and regular users should have their hearing checked
regularly.
To reduce the risk of injury to your head never operate a 4012 DURATECH TUB
GRINDER unless wearing a hard hat.

84012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
1.3 Machine safety labels
The safety decals located on your machine contain important information that will help you operate your equipment.
Become familiar with the decals and their locations.
DANGER: OBJECTS THROWN BY MACHINE
DO NOT OPERATE WITHOUT WEARING SAFETY
GLASSES AND A HARD HAT.
KEEP UNAUTHORIZED PERSONNEL OUT OF THE
GRINDING AREA
DANGER: ROTATING PART HAZARD, STAY OUT OF
TUB WHEN ENGINE IS RUNNING.
1. KEEP OTHERS AWAY.
2. PLACE ALL CONTROLS IN NEUTRAL, STOP
ENGINE, REMOVE KEY, AND WAIT FOR ALL
MOVING PART TO STOP BEFORE SERVICING,
ADJUSTING, REPAIRING, UNPLUGGING, OR
ENTERING THE TUB FOR ANY REASON.
3. DISCONNECT DRIVELINE ON PTO MODELS.
DANGER: ELECTROCUTION HAZARD
TO PREVENT SERIOUS INJURY OR DEATH FROM
ELECTROCUTION:
STAY AWAY FROM POWER LINES WHEN OPERATING
BOOM LOADER, FOLDING AND RAISING
CONVEYORS, AND TRANSPORTING ON ROADS.
THIS MACHINE IS NOT GROUNDED, ELECTROCUTION
MAY OCCUR WITHOUT DIRECT CONTACT.
6500118
6500212
6500216
( REV. 11-14 )
WARNING: CHECK FOR FIRES, CLEAN OFF DEBRIS,
SWITCH OFF BATTERY
NEVER LEAVE THIS MACHINE UNATTENDED UNTIL ALL
POTENTIAL FIRE DEBRIS IS REMOVED, NO FIRE OR
SMOLDERING EXISTS, AND THE BATTERY IS
SWITCHED OFF. REMOVE ALL FLAMMABLE DEBRIS
FROM ENGINE, SHIELDING, CONTROL PANEL, UNDER
MACHINE AND ANYWHERE MATERIAL IS COLLECTED.
DURATECH INDUSTRIES IS NOT RESPONSIBLE FOR
FIRES CAUSED BY HAZARDS LEFT TO SMOLDER OR
BURN, OR IMPROPER SHUTDOWN PROCEDURES. 6500425

9
4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
WARNING: FOR YOUR PROTECTION AND SAFETY
OF OTHERS, FOLLOW THESE SAFETY RULES
1. READ AND UNDERSTAND OPERATORS MANUAL
BEFORE OPERATING MACHINE.
2. PLACE ALL CONTROLS IN NEUTRAL, STOP
ENGINE, REMOVE IGNITION KEY, LOCK OUT
POWER SOURCE, AND WAIT FOR ALL
MOVEMENT TO STOP BEFORE SERVICING,
ADJUSTING, REPAIRING, OR UNPLUGGING.
3. READ AND UNDERSTAND ALL DECALS ON
MACHINE FOR YOUR SAFETY.
4. KEEP ALL SHIELDS IN PLACE WHILE MACHINE IS
IN OPERATION.
5. KEEP HANDS, FEET, HAIR, AND CLOTHING AWAY
FROM MOVING PARTS.
6. KEEP OTHERS AWAY FROM MACHINE WHILE IN
OPERATION.
7. INSTALL SAFETY LOCKS BEFORE
TRANSPORTING, OR WORKING BENEATH
COMPONENTS.
8. DO NOT ALLOW RIDERS AT ANY TIME.
9. DO NOT LEAVE MACHINE UNATTENDED WHILE
ENGINE IS RUNNING.
10. KEEP ALL HYDRAULIC LINES, COUPLINGS, AND
FITTINGS FREE OF LEAKS DURING OPERATION.
11. KEEP AWAY FROM OVERHEAD ELECTRICAL
LINES. ELECTROCUTION CAN OCCUR WITHOUT
DIRECT CONTACT.
12. REVIEW SAFETY INSTRUCTIONS PERIODICALLY.
WARNING: NO RIDERS
SERIOUS INJURY COULD RESULT FROM RIDING ON
THE MACHINE.
WARNING: TO PREVENT SERIOUS INJURY OR DEATH:
DO NOT WALK UNDER CONVEYOR AT ANY TIME.
STAY CLEAR OF CONVEYOR DURING OPERATION,
RAISING, AND LOWERING. LOWER CONVEYOR
FULLY BEFORE SERVICING.
KEEP OTHERS AWAY.
6500208
6500214
6500043

10 4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
6500209
WARNING: THROWN OBJECT HAZARD, TO PREVENT
SERIOUS INJURY OR DEATH DO NOT RAISE TUB
WHEN ROTOR IS TURNING.
1. DISENGAGE ROTOR AND ALLOW TO COME TO A
COMPLETE STOP.
2. BE CERTAIN THAT ALL PERSONNEL ARE CLEAR
OF MACHINERY AREA.
3. RAISE TUB TO FULL VERTICAL POSITION.
4. STOP ENGINE AND REMOVE KEY BEFORE
APPROACHING TUB AND ROTOR AREA.
WARNING: HIGH-PRESSURE FLUID HAZARD, TO
PREVENT SERIOUS INJURY OR DEATH:
• RELIEVE PRESSURE ON SYSTEM BEFORE
REPAIRING OR ADJUSTING OR DISCONNECTING.
• WEAR PROPER HAND AND EYE PROTECTION
WHEN SEARCHING FOR LEAKS. USE WOOD OR
CARDBOARD INSTEAD OF HANDS.
• KEEP ALL COMPONENTS IN GOOD REPAIR.
WARNING: PINCH POINT STAY BACK
CAUTION: DO NOT OPERATE MACHINE UNLESS AN
APPROVED FIRE EXTINGISHER IS INSTALLED.
KEEP WHEEL BOLTS TIGHT
6500220
6500042
6500339
6500497

11
4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
1.41.4
1.41.4
1.4 ShieldingShielding
ShieldingShielding
Shielding
This Tub Grinder is equipped with heavy-duty shielding at major points of potential injury. All Shields should be kept in
place during operation. Bodily injury may occur if the unit is operated without shields.
WARNING: Shields are installed for your protection and to keep material off machine parts. Do not
operate this Tub Grinder without shields in place.
1.51.5
1.51.5
1.5 TT
TT
Tub Grinder safub Grinder saf
ub Grinder safub Grinder saf
ub Grinder safety rety r
ety rety r
ety ree
ee
evievie
vievie
vieww
ww
w
WARNING: Before attempting to operate your Tub Grinder, carefully read and follow instructions
given below and contained elsewhere in this manual.
Each and every aspect of the DuraTech Industries 4012 DuraTech Tub Grinder should be reviewed by each
operator on a frequent basis. Safety systems are in place that result in direct operator security.
• Keep all foreign objects such as rocks, pieces of metal and other incompressibles out of the tub and away
from the mill. Foreign objects may result in personnel injury or damage to the machine. A foreign object is
any object which the unit in not designed to grind.
• Allow only responsible, properly instructed individuals to operate machines. Carefully supervise
inexperienced operators.
•Never operate the unit without all safety features, including shields, in place and in operating
condition.
• Make no modifications to this equipment unless specifically requested or recommended by DuraTech
Industries.
• Tighten or replace any loose or cracked bolts, chains, hoses or connections.
• Check overhead for electrical power lines or other obstructions and be certain there is adequate clearance.
• Allow no one on the Tub Grinder at any time during operation.
• Unauthorized personnel should stay out of the grinding area.
• Always perform the pre-operation inspection before operating this machine.
• Ensure rotor is at a complete stop and engine is shut down before any performing any maintenance.
•Never grab rope, cable, twine or similar material hanging out of tub while the tub grinder is
running.
• Never enter the conveyor pivot area when the engine is running.
WARNING: Loose clothing, necklaces and similar items are easily caught in moving parts. Avoid the
use of these items if possible. Keep long hair confined. Keep hands, feet and clothing away from
power driven parts.
( REV. 04-03 )
( REV. 04-03 )

12 4012 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
1.6 Thrown objects and operator safety
An operational characteristic of all tub grinders is that objects may be thrown out of the tub. Thrown objects may
present a safety hazard to persons in the area. This section is to inform the operator of this characteristic, and what can
be done to reduce the risk of injury to the operator and persons in the area. Keep all observers away from the machine.
Figure 1.1
Figure 1.2
Thrown
object
hazard
Figure 1.1 shows an object being hit as
the hammer is on the upswing. A general
pattern for where thrown objects may
land is shown in Figure 1.2.
NOTE: The thrown object pattern will be larger on side B
( REV. 04-03 )
Dimensioning the size of this area is not practical. The distance a thrown object may travel is dependent on several
conditions, including, but not limited to, rotor speed and diameter, condition of the hammers, style of hammers, object
mass, object shape, amount of material in the tub, and how the hammer strikes the object.