Kubota N600LRC User manual

KEEL CUTTER
N600LRC Type
INSTRUCTION MANUAL

Table of Contents
Section 1 Prohibition and Caution ............................................................................................................ 1
Section 2 Outline of Keel Cutter/N600LRC Type......................................................................................... 2
1.
Specification ..................................................................................................................................... 2
2.
Main Parts........................................................................................................................................ 3
3.
List of Parts...................................................................................................................................... 4
Section 3 Operational Procedures ............................................................................................................. 5
1.
Cutting of Pipe ................................................................................................................................. 5
2.
Grooving of Spigot.......................................................................................................................... 15
Section 4 Maintenance ............................................................................................................................. 18

1
Prohibition!
Unobservant use can result in serious or fatal injury to the operator or others.
Warning!
Careless and incorrect use can result in injury to the operator or others.
Caution!
Incorrect use can cause inexpedient influence upon durability of the machine and efficiency of
operation.
Tip!
This symbol means complementary guidance and instruction.
Section 1 Prohibition and Caution
◆Prohibition◆
◎ Do not let others operate the machine unless they understand this instruction manual
beforehand.
◎ Do not touch the wheel when the machine is running.
◎ Do not use the machine near flammable materials.
◆Caution◆
◎ Wear safety goggles while operating the machine to avoid foreign objects getting in the eye.
◎ Do not touch the machine body and wheel while running or right after shutting down. Those
may be still hot and burn the hand.
◎ Always check the machine before use. Keep the machine clean and oiled after use.
◎ Do not wear loose clothing or jewelry around machinery. It may catch on moving equipment and
lead to serious injury.
◆Notice◆
◎ Use only genuine parts for this product. Your warranty does not cover damage or liability caused
by the use of non-authorized accessories or replacement parts.
◎ This instruction manual does not cover all the potential circumstances. Therefore, always
operate the machine with caution for your safety.
Terms and Definitions of symbols used in this manual
Please find a sticker labeled on a wheel cover of the machine body, notifying the instructions below.
Roller bumper ▲Checking position
Caution! Do not touch the wheel when the machine is running.
Caution! Do not use the machine near flammable materials.
←←←Wheels rotate this way ←←←

2
Section 2 Outline of Keel Cutter/N600LRC Type
1.
Specification
Applicable
Materials
Ductile Iron Pipe, Cast Iron Pipe, Hume Concrete Pipe
Steel Pipe, Stainless Steel Pipe
Dimension
unit Inches/lb Metric/kg
Applicable
Diameter 4 in. – 60 in. 100 mm – 1500 mm
Depth of
Grooving
0.118 in.
7/64 in.
0.157 in.
5/32 in.
0.196 in.
3/16 in. 3.0mm 4.0mm 5.0mm
Width of
Grooving
0.866 in.
7/8 in.
1.102 in.
1 1/8 in.
1.260 in.
1 1/4 in. 22.0mm 28.0mm 32.0mm
Depth of
Cutting
Maximum: 1 1/8 in. (1.14 in.)
(6 in. Disc Wheel)
Maximum: 29mm
(150 mm Disc Wheel)
Speed of
Cutting
Approximately
3.15 in./min
Approximately
80 mm/min
Guiding
Device Guide Ring Type
Machine
Size
Height
9.84 in.
Width
20.78 in.
Length
13.78 in.
Height
250 mm
Width
528 mm
Length
350 mm
Weight of
Machine
Approximately
60 lb
Approximately
27 kg
Flexible
Shaft
Inner Dia.
0.78 in.
Outer Dia.
1.57 in.
Length
19.68 ft
Inner Dia.
20 mm
Outer Dia.
40 mm
Length
6 m
Weight of
Flexible
Shaft
Approximately
73 lb
Approximately
33 kg
Engine
Output Maximum 6 PS/2000rpm
Weight of
Engine
Approximately
53 lb
Approximately
24 kg

3
2.
Main Parts
Fig.1
Bracket Fixing Bar
Guiding
Device
Guide Ri g Guide Roller
Oil Lev l Window
Bracket
Wheel
Slitting Device
V-Belt
First Driven Shaft
Second Driven Shaft
Hook
Oil Filling
W
Body Gear Case
Tapping for Water
Pump Cock
Wheel Cover
Caution Sticker
attached
Driven Shaft Pulley
Drive Shaft Pulley
Clutch
Wheel
Drive Shaft Pulley
V-Belt
Driven Shaft Pulley
Roller Chain
heel
Port
Flexible
Shaft

4
3.
List of Parts
Make sure no parts are missing before using the machine.
Stored in Items Size/Description QTY
V-Belt C-40 (Circumference: 16 in.)
2
V-Belt C-45 (Circumference: 18 in.)
2
Hook Adjusting Long Screw attached
1
First Driven Shaft Double Driven Shaft Pulley attached
1
Second Driven Shaft Single Driven Shaft Pulley attached
1
Roller Chain 1.5 m (Length: 60 in.)
1
Main Body
Case
Guide Ring Gauge
Hose Jointing Tap
Cutting Wheel Holder
(attached to Main Body)
(attached to Main Body)
1
1
1
Cutting Wheel Pressing Cap Type A (for Cutting Wheel)
1
Shaft Key (attached to Main Body)
1
Safety (Wheel) Cover (attached to Main Body)
1
Safety Wedge Place in the gap when cutting
2
Support Bar Keep the machine from rolling forward
Straw Broom (Brush)* Grooving chips removal
1
Crank Handle
1
Grooving Wheel Holder (w/Key)
1
Grooving Wheel Pressing Cap Type B (for Grooving Wheel)
1
Grooving Depth Adjusting Wheel 3 mm DPT
1
Metric Wrench 10 mm
1
Metric Wrench 17 mm
1
Metric Combination Wrench 19 mm x 24 mm
1
Tool Box Metric Hex Key 5 mm
1
Metric Hex Key 6 mm
1
Soft Hammer
1
Metric Ratchet 10 mm Dr. (Length: 7 in.)
1
Safety Goggles
1
Plug Wrench
1
Half Round File
1
Extra Shaft Key 5 mm x 5 mm x 35 mm
1
*Use only a straw broom (brush) for your safety to prevent your hand from getting caught by a
grooving wheel in motion when removing grooving chips. If necessary, shut down the machine to
clean up chips.

5
Cutting P
Effective Cut Pipe Length
Spigot
Whole Cut Pipe Length
Section 3 Operational Procedures
1.
Cutting of Pipe
Step 1: Cut Pipe Length and Cutting Position
After deciding where to cut (how long cut pipe length is.), measure cut pipe length and mark
a cutting position. Cut pip length is effective length of cut pipe.
Fig.2
Example: NS Type Pipe
Step 2: Guide Ring Installation
Tip! The Guide Ring is a guide rail to keep the machine and the wheel stayed on track. Make
sure the Guide Ring is fixed tight and stable on the pipe for accurate cutting.
Fig.3
Guide Ring
392mm
(15 1/2 inch)
Cutting Position
A)
Place the Guide Ring on the pipe 392mm (15 1/2”
Hex Socket Head Bolt
) away from a cutting position. The Guide
Ring Gauge is convenient to measure a Guide Ring position. (Fig.3 and Pict.1)
B)
Tighten all hex socket head bolts evenly, keeping the Guide Ring at a right angle against the
pipe. (Pict.2)
C)
Check at least 4 measurements (top, bottom and sideways) for a proper Guide Ringposition.

6
Fig.4
Step 3: V-Belt Installation
A)
Prepare certain number and size of V-Belt accordance with pipe diameter.
20” – 24” (500mm – 600mm) C-40 * 2 and C-45 * 2
B)
Open the Safety (Wheel) Cover. Install the C-40 V-Belt on the Drive Shaft Pulley. (Pict.3)
C)
Remove the bolt of the Bracket Fixing Bar by the Guiding Device. Remove the Bracket Fixing
Bar and install another C-40 V-Belt on the Drive Shaft Pulley. Put back and tighten the bolt
lightly to replace the Bracket Fixing Bar. (Pict.4)
Pict.3 Pict.4
Screw Nut
Pict.1
Pict.2

7
Roller Shaft
Bolts of Bracket Fixing Bar
Step 4: Roller Chain Installation
A)
Prepare proper length of Roller Chain accordance with pipe diameter.
20” – 24” (500mm – 600mm) 1.5 m (Length: 60 in.)
B)
Use a chain joint to connect the Roller Chain to the Machine Body or additional Roller Chain.
(Pict.5)
Pict.5
Step 5: Main Body Placement and Guiding Device Adjustment
A)
Place the Main Body on the pipe. Make sure the Guide Rollers are placed on the Guide Ring.
After placing the Main Body on the pipe, check if the two Drive Shaft Pulleys (V-Belt) and the
two Wheels are on the pipe. (Refer to Fig.1)
B)
Loosen the two bolts of the Bracket Fixing Bar. (Fig.5) Adjust the Roller Shafts to the center of
the pipe. Tighten the two bolts of the Bracket Fixing Bar firmly. (Pict.6)
Fig.5 Pict.6

8
C)
Loosen the outer side of the Guide Roller Shaft nuts (M16), with the inner Guide Rollers pressed
against the Guide Ring. Adjust tightness of the Guide Rollers, using the M6 Adjusting bolts.
Make sure the Guide Rollers and Guide Ring contact against each other. After fixing M16 nuts,
tighten the M6 Adjusting bolts. (Fig.6, Pict.7)
Pict.7 Fig.6
Wheel Guide Ring
M16 nut
e Roller
Drive Shaft Pulley M6
bolt
Adjusting
Tip! Once the Guide Rollers are adjusted, this adjustment work is not always required as long as
all of the Guide Rollers and Guide Ringcontact
shall be cut face difference due to this gap.
against each other. If there is any gap, there
D)
Assemble the First Driven Shaft (V pulley) and the Hook (w/ Adjusting Long Screw) together.
Make sure that distance between the pulley and the hook is adjusted the same distance as much
as possible. Install the C-40 -Belts on the First Driven Shaft Pulley. Connect the Hook and the
Roller Chain at the tightest length. (Pict.8) Use the Crank Handle to turn the Adjusting Long
Screw. Make sure the V-Belts and the Roller Chain are slightly tense. (Pict.9)
Pict.8 Pict.9
Guide

9
E)
Adjustment of the Drive Shaft Pulley, Driven Shaft Pulley, V-Belts and the Roller Chain shall be
parallel to the Guide Ring. (Fig.7)
Fig.7 V-Belt
Drive Shaft Pulley
Driven Shaft Pulley
Adjusting Long Screw
Guide Ring
Roller Chain Adjust this distance
around.
same all the way
F)
Turn the Crank Handle and press the center of the V-Belts to check the tension with your finger
once in a while. Tension is appropriate when the V-Belts are not elastic of finger pressing.
Tip! For any pipe larger than 20”, Double pulley assembly is necessary. (Pict.10)
Tip! Single pulley assembly makes the V-Belts slip on the pipe
Tip! When making double pulley assembly, install the C-45 V-Belts on the inner side of the First
Driven Shaft (w/ Double Driven Shaft Pulley) at first. Connect the First Driven Shaft and
the Drive Shaft Pulley. After this work is finished, install other sides of the C-45 V-Belts on
the Second Driven Shaft (w/ Single Driven Shaft Pulley).
Pict.10
Main
Body

10
Pict.11
Wheel Rotation
Fig.8
Machine
Rotation
Pipe
Fig.9
Cutting Wheel
Cutting Wheel
Cutting Wheel Holder
Key
Nut
p
Pressing Ca
Shaft
Warning!
◎ Wrong direction of the wheel can cause damage on the wheel.
◎ Always make sure the nut of the Cutting Wheel Pressing Cap is tight and firm. If the Cutting
Wheel becomes loose in the middle of rotation, this can cause serious injury and damage on the
wheel.
Step 6: Cutting Wheel Installation
A)
Prepare a proper cutting wheel for the KEEL CUTTER N600LRC.
B)
Put the Crank Handle on the shaft of the Slitting Device and turn it to raise the machine upward
until the Cutting Wheel can be fit. Make sure indication (marked on the front side) of the Cutting
Wheel facing in front and put the wheel to the Cutting Wheel Holder followed by the Cutting
Wheel Pressing Cap. Tighten the nut firmly to hold the wheel. (Fig.8, Fig.9 and Pict.11)
Tightening torque for the bolt holding the wheel is: 20 Nm (180 in.lb).

11
Fig.10
To Machine Body To Engine
Flexible shaft
Shorter Socket
Use for pipe under the ground
Longer Socket
Warning!
The
Cutting Wheel and a pipe must be separated before starting the engine. Raise the wheel to start
the engine if it is on the pipe. Never start the engine when the wheel and pipe are in contact.
Step 7: Connecting Machine Body and Flexible Shaft
A)
Remove the covers on both ends of the Flexible Shaft. The Flexible Shaft has the longer socket
and shorter socket on both ends. Connect the longer socket to a nipple of the engine.
B)
Connect the shorter socket to a nipple of the machine body. Make sure the connection is tight and
firm, using a soft hammer.
Pict.12
C)
Rotate the longer socket and shorter socket regularly for the good condition of a shaft in the use
of on the ground cutting work.
Step 8: Start of engine
A)
The engine must be checked before starting. (Refer to Section 4 Maintenance)
B)
Start the engine. Take notice that the Cutting Wheel starts to move at the same time as the
engine is started.

12
Step 9: Pre-Operation (V-Belt re-adjustment)
A)
Push the clutch handle down to rotate the machine forward. (Fig.11) At this point, the wheel
must be off the pipe. Let the machine move forward about 5 inches so that the V-Belts fit on the
pipe for good grip. As the machine moves along the pipe, check also other part of the machine
(bolts, nut and Guiding Device).
Stopping position
Fig.11
Operating position
Clutch
Machine
Body
Direction to move
Tip! The clutch is not a switch to start the wheel rotating. It is an ON/OFF switch of
body to move on a pipe in the same speed.
machine
B)
Disconnect the clutch to stop the machine. Tighten the stretch d V-Belts from the pr -operation.
(Pict.13)
Pict.13
Warning!
An engine starter and a cutting machine operator should make eye and verbal contact or sign for
their safety.

13
Prohibition!
Do not touch the rotating parts.
Warning!
Use safety goggles when cutting a pipe to protect your eyes from chips.
Caution!
Lower the cutting wheel slowly. Rough slitting can damage the wheel and cause the trouble.
Caution!
Use safety wedges when the pipe is almost cut to prevent the wheel from getting caught in pipe ends.
Caution!
Never shut down the engine when the wheel is in the slit. This can damage the wheel and cause the
trouble.
Step 10: Slitting
Set and turn the Crank Handle slowly counter-clock wise (downward) to lower the cutting wheel.
When the cutting wheel reaches the needed depth, fix the slitting shaft by the wing bolt.
Tip! Always use the water tank for a diamond chipped wheel.
Step 11: Cutting of pipe
A)
Connect the clutch (push down the handle) to operate the machine on an automaticdrive mode.
Tip! Check the belt tension and cutting line while cutting a pipe.
B)
Cutting is completed when the machine turns around a pipe.
C)
When the pipe is completely cut, turn the Crank Handle slowly clock wise (upward) to raise the
cutting wheel. Shut down the engine after the wheel is completely raised.
Tip! A backfire (small explosion) of engine is not trouble.
Step 12: Finish
A)
Shut down the engine. Make sure the wheel is completely stopped. Remove the machine from the
pipe.

14
Caution!
Leaving rusty matter can cause trouble such as wobbling cut and slipping.
B)
Clean and oil the machine after usage. (Refer to Section 4 Maintenance)
Warning!
The wheel and the machine are hot. Cool them down before removing.

15
2.
Grooving of Spigot
Step 1: Grooving Position on the spigot of the cut pipe
Select the Grooving Position shown in the Table1 and Table 2 below.
Metric Dimension: mm
Table 1: Tolerance value of groove
Description Size Tolerance
＋ −
V
20” – 60” 1.0mm 0.5mm
64” 1.5mm 0.5mm
X
20”, 24” 2.0mm 2.0mm
28” – 64” 4.0mm 4.0mm
M
All size 1.5mm 0.5mm
Table 2: Dimension of groove
Size
X M V
Grooving Wheel
Width
Grooving Depth
Adjusting Wheel
20”, 24” 40mm 22mm 3mm
22mm
3mm Depth Type
Outside Diameter: 104mm
28” – 36” 55mm 27mm 4mm
28mm
4mm Depth Type
Outside Diameter: 102mm
40” – 48” 50mm 32mm 5mm 32mm
Double Wheels
5mm Depth Type
Outside Diameter: 115mm
54” 60mm 32mm 5mm 32mm
Double Wheels
5mm DPT Type
Outside Diameter: 115mm

16
Key
Step 2: Guide Ring Installation
Place the Guide Ring on the pipe in the same manner as cutting of pipe. Take notice that Guide Ring
placing position is different than cutting of pipe. (432mm or 17”, F g.12)
Fig.12
Step 3: Grooving Wheel Installation
A)
Prepare a proper grooving wheel and grooving depth adjusting wheel for the pipesize.
B)
Punch marks on the wheel must face in front. Install the Grooving Wheel onto the Grooving
Wheel Holder.
C)
Make sure the Grooving Wheel Holder and the Grooving Wheel Pressing Cap are tightened
firmly to hold the wheel. (Fig.13) Tightening torque for the
in.lb).
holding the wheel is: 20 Nm (180
Grooving Wheel
Grooving Wheel Pressing Cap
Nut
Grooving Wheel Holder
Grooving Depth Adjusting Wheel
Fig.13 Sha t
Warning!
◎ Pay attention to the direction of the Grooving Wheel. Punch marks on the wheel must face in
front, otherwise, the bits of the wheel get severely damaged and this can result in major trouble.
◎ Make sure the nut is tightened firmly and does not get loosen while being operated, otherwise
this can cause not only damaging the wheel but also serious injury.
Guide Ring
432mm
(17 “)
Cut end
Hex Socket Head Bolt

17
Warning!
The wheel and the machine are hot. Cool them down before removing.
Prohibition!
Do not touch the rotating parts.
Warning!
◎ Use safety goggles when cutting a pipe to protect your eyes from chips.
◎ Grooving work can have larger kickback than cutting work, which can cause not only damaging
the wheel but also serious injury. Therefore, make sure to start grooving gently.
Caution!
Never shut down the engine when the wheel is in contact with the groove. This can damage the
wheel and cause the trouble.
Caution!
Leaving rusty matter can cause trouble such as wobbling cut and slipping.
Step 4: Start Grooving
Start grooving gently by lowering the Grooving Wheel slowly in the same manner as the Cutting
Wheel to avoid kickback.
Step 5: Grooving depth adjustment
A)
When the wheel starts grooving, keep lowering the wheel until the Grooving Depth Adjusting
Wheel hits the pipe surface. This means that the Grooving Wheel reaches the prescribed depth.
Take notice that when the Grooving Depth Adjusting Wheel on the pipe surface, it stops rotating.
B)
Tighten the wing nut to hold and keep it from moving. Turn the clutch handle down to start
grooving all around the pipe.
Step 6: Finish Grooving
A)
Keep the machine run until grooving noise and chips are not recognized.
B)
When the groove is completed, turn the Crank Handle slowly clock wise (upward) to raise the
grooving wheel. Shut down the engine after the wheel is completely raised.
C)
Shut down the engine. Make sure the wheel is completely stopped. Remove the machine from the
pipe.
D)
Clean and oil the machine after usage. (Refer to Section 4 Maintenance)

18
Fig.14
Oiling points
Section 4 Maintenance
Maintenance is very important to keep the Keel Cutter in good co ndition all the time. Clean off dust
and stain. After rinsing entire dirt, Oil the frictional and sliding areas shown in the figure below.
1
Wheel
1.
Leaving rusty matter on the wheel loses durability. Make sure to rinse the wheel after use.
2.
Make sure a diamond chipped wheel is not cracked or damaged in any other way.
3.
The Grooving Wheel needs to be sharped every 40 feet of grooving length as a guide line. Ask the
stores for sharpening the wheel.
2
Machine Body Gear case
Check the amount of oil. Keep the machine level to check the amount of oil. Oil level is good if the
oil is visible on the oil checking window.
3
Roller Chain
Make sure to clean off dust and stain after use. Oil the chains to keep the Roller Chain in smooth
movement. (⑤of Fig.14)
4
V - Belt
1.
Leaving rusty matter on the V-Belt (particularly on the wheel side) loses durability.
to remove any rusty matter after use.
2.
Runs of cords are a sign of replacing the belt.
Make sure