7in. Metal Cutting Bandsaw
7in. Metal Cutting Bandsaw
Model CBS7MB
Part Number 6460122
Operating & Maintenance
Instructions
0514
Specifications
Part No ........................................................................... 6460122
Motor ............................................................................. 230V, 50Hz, 1Ph
Speed ............................................................................ 1400RPM
Power Rating ................................................................. 750Watts
Running Current ............................................................ 4Amps
Fuse Rating .................................................................... 13Amps
Blade Size ...................................................................... 2362x20x0.9mm - 6tpi
Blade Speed ................................................................. 34,41,59,98 M/min.
Cutting Capacity at 90o.......... Round ........................ 180mm Dia.
Flat ............................. 300x180mm
Cutting Capacity at 45o.......... Round ........................ 100mm Dia.
Flat ............................. 90x180mm
Angle Cut ...................................................................... 0 - 45 Degrees
Weight (unpacked) ..................................................... 143kg net
Noise Level (Sound Power Level) ................................ less than 78dB Whilst Cutting.
CLARKE CUTTING OIL Part No. 1 Litres ................ 3051059
5 Litres ................ 3051061
Available from your Clarke dealer.
DECLARATION OF CONFORMITY
We declare that this product complies with the following standards/directives
98/37/EC
89/336/EEC
73/23/EEC
Product Description: Metal Cutting Bandsaw
Model No: CBS7MB
Serial/Batch No: See machines’ Data Plate
signed:
Service manager
ENVIRONMENTAL RECYCLING POLICY
Through purchase of this product, the customer is taking on the
obligation to deal with the WEEE in accordance with the WEEE
regulations in relation to the treatment, recycling & recovery and
environmentally sound disposal of the WEEE.
In effect, this means that this product must not be disposed of with
general household waste. It must be disposed of according to the laws
governing Waste Electrical and Electronic Equipment (WEEE) at a recognised
disposal facility.
2
Thank you for purchasing your new Clarke Metal Cutting Bandsaw, designed for light industrial
use ONLY.
Before attempting to operate this bandsaw please read this instruction manual thoroughly
and follow all directions carefully. This is for your own safety and that of others around you,
and to ensure the machine will provide long and trouble free service.
Guarantee
This product is guaranteed against faults in manufacture for 12 months from purchase date.
Keep your receipt as proof of purchase.
This guarantee is invalid if the product has been abused or tampered with in any way, or
not used for the purpose for which it is intended.
The reason for return must be clearly stated. This guarantee does not affect your statutory rights.
Contents
Specifications ...................................................................................... 2
Declaration of Conformity ................................................................ 2
Environmental Recycling Policy ...................................................... 2
General Safety Precautions .............................................................. 4
Additional Safety Precautions for Band Saws ................................5
Electrical Connections .....................................................................6
Know your Band Saw ......................................................................... 7
Unpacking and Installation ..............................................................8
Overview .............................................................................................9
Preparation For Use .......................................................................... 10
Tensioning the Blade ........................................................ 10
Setting the Blade Guides ................................................. 11
The Vice ............................................................................. 11
The Work Stop .................................................................... 12
Cutting Speeds .................................................................. 12
Using The Band Saw ......................................................................... 13
Maintenance ....................................................................................15
Changing the Blade ......................................................... 15
Blade Guide Bearing Adjustments .................................16
Blade Tracking Adjustment .............................................17
Ensuring Blade is Square ................................................. 17
Balancing the Arm ............................................................ 17
Cleaning ............................................................................ 18
Lubrication ......................................................................... 18
Troubleshooting ............................................................................... 19
Parts Lists and Diagrams ........................................................... 20 -23
3
General Safety Precautions
For Operating Machinery
WARNING!
As with all machinery, there are certain hazards involved with their operation
and use. Exercising respect and caution will considerably lessen the risk of
personal injury. However, if normal safety precautions are overlooked or
ignored, personal injury to the operator or damage to machinery may result.
✔ ALWAYS read the manual carefully. Know your machine. Learn its applications and
limitations, as well as the specific potential hazards peculiar to it.
✔ ALWAYS keep guards in place and in working order.
✔ ALWAYS earth your machine. The machine is equipped with three-pin plug, which should
be plugged into a three-pin electrical socket. NEVER remove the earth pin.
✔ ALWAYS remove adjusting keys and wrenches. Form the habit of checking to ensure
that keys, wrenches and tools, are removed from the machine.
✔ ALWAYS keep work area clean. Cluttered areas and benches invite accidents.
✔ ALWAYS check for damage. If any part of the machine, (eg. A cover or guard) is
damaged, it should be carefully inspected to ensure that it can perform its intended
function correctly. If in doubt, the part should be renewed. Damage to moving parts
or major components should be Inspected by a qualified technician before operating.
✔ ALWAYS make workshop childproof - with padlocks, master switches or by removing
starter keys.
✔ ALWAYS keep children and visitors away. All children and visitors should be kept a safe
distance from work area
✔ ALWAY S ensure that adequate lighting is available. A minimum intensity of 300 lux should
be provided. Ensure that lighting is placed so that you will not be working in your own
shadow.
✔ ALWAYS use the right tool. Don’t force a tool or attachment to do a job for which it
was not designed.
✔ ALWAYS wear proper apparel. Loose clothing, gloves, neckties, rings, bracelets, or
other jewellery may get caught in moving parts. Nonslip footwear is recommended.
Long hair should be contained.
✔ ALWAYS use safety glasses. Everyday eyeglasses only have impact resistant lenses,
they are NOT safety glasses.
✔ ALWAYS avoid accidental starting. Switch Machine OFF before plugging in.
✔ ALWAYS maintain tools in top condition. Keep tools sharp and clean for best and
safest performance. Follow instructions for lubricating and changing accessories.
✔ ALWAYS disconnect the machine before servicing or changing accessories.
✗ NEVER overreach. Keep proper footing and balance at all times.
✗ NEVER use in dangerous environment. Don’t use machinery in damp or wet locations,
or expose them to rain. Keep work area well lit.
4
✗ NEVER stand on the machine. Serious injury could occur if the machine is tipped
over. Do not store materials above or near the machine such that it is necessary to
stand on the machine to get to them.
✗ NEVER operate a machine when under the influence of alcohol, drugs or medication.
✗ NEVER force the machine. It will do the job better and safer, at the rate for which it
was designed.
Additional Safety Rules For Bandsaws
WARNING!
This machine must not be modified or used for any purpose other than that
for which it is designed.
✔ ALWAY S wear suitable eye protection, manufactured to the latest European Safety
Standards, when using the bandsaw.
✔ ALWAY S Ensure the proper electrical regulations are followed, and that the machine is
properly earthed.
✔ ALWAYS ensure all spanners, wrenches etc., are removed from the machine before use.
✔ ALWAY S ensure the workpiece is properly secured using the vice...NEVER hold by hand
when cutting, unless using the vertical cutting table.
✔ ALWAY S make adjustments with the power OFF.
✔ ALWAY S cut at correct speed for the type of material being cut.
✔ ALWAY S keep your hands and fingers clear of the blade when sawing.
✔ ALWAY S set the blade guide/guard assembly as close as possible to the workpiece.
✔ ALWAY S switch off the saw, and make sure the blade has come to a complete stop
before examining or removing the workpiece.
✔ ALWAY S keep the saw properly adjusted, paying particular attention to the blade
tension and the blade guides.
✔ ALWAY S disconnect the saw from the mains supply before removing the blade cover.
✔ ALWAY S check the coolant DAILY. Ensure it is clean and of the correct mix.
✔ ALWAY S Wipe the machine surfaces dry at the end of the day.
✔ ALWAY S disconnect from the power supply before carrying out any maintenance tasks.
✗ NEVER operate this machine unless you are thoroughly familiar with it. If there is any
doubt whatsoever, you should consult a qualified person.
✗ NEVER operate the machine until it is completely assembled, and this entire manual,
has been read and understood.
✗ NEVER leave the Bandsaw unattended whilst it is running. Turn power OFF and Don’t
leave until it comes to a complete stop.
✗ NEVER allow suds to enter the electrical system when using coolant
✗ NEVER use soluble oil to cut Magnesium. See your industrial coolant supplier for specific
recommendations.
5
Electrical Connections
Connect the mains lead to a standard 230V (50Hz) electrical supply through an
approved 13Amp BS1363 plug, or a suitably fused isolator switch.
WARNING!
IMPORTANT:
following code:
As the colours of the flexible cord of this appliance may not correspond with the
coloured markings identifying terminals in your plug proceed as follows:
The wires in the mains lead are coloured in accordance with the
Green & Yellow - Earth
This Appliance must be Earthed!
Blue - Neutral
Brown - Live
• Connect GREEN & YELLOW coloured cord to plug terminal marked with a letter
E or Earth symbol “ ”or coloured GREEN or GREEN & YELLOW.
• Connect BROWN coloured cord to plug terminal marked with a letter L or
coloured RED
• Connect BLUE coloured cord to plug terminal marked with a letter N or coloured
BLACK
IMPORTANT:
electric cable (i.e. non- re-wireable) please note:
1. The plug must be thrown away if it is cut from the electric cable. There is a
danger of electric shock if it is subsequently inserted into a socket outlet.
2. Never use the plug without the fuse cover fitted.
3. Should you wish to replace a detachable fuse carrier, ensure that the correct
replacement is used (as indicated by marking or colour code).
4. Replacement fuse covers can be obtained from your local dealer or most
electrical stockists.
If this appliance is fitted with a plug which is moulded on to the
Fuse Rating
The fuse in the plug must be replaced with one of the same rating (13 amps)
and this replacement must be ASTA approved to BS1362.
IMPORTANT: If in any doubt, do not attempt any electrical repair yourself. Consult
a qualified technician
6
Know your Bandsaw
Fig. 1
A ON/OFF Switch Box
B ON/OFF Coolant Pump Switch
C Motor
D Pulley Cover
E Gearbox
F Blade Tensioner
G Blade Guides
H Blade Guide Carrier Lock Knob
I Vise Jaw
J Band Saw Tracking Adjuster
K Vise Jaw Adjuster
L Work Stop
M Hydraulic Ram
N Coolant Tank (inside base)
(Accessed from rear)
7
Unpacking and Installation
IMPORTANT!
This machine cannot be handled without the use of lifting tools. Take all
necessary precautions when manoeuvring.
Unpack your bandsaw and check to ensure it is undamaged. If damage has
occurred during transit, you should notify your Clarke dealer immediately.
Using appropriate tools, raise the saw sufficiently for blocks to be placed beneath, to
allow the wheels to be fitted. Ensure it is perfectly stable.
Slide the axles through the holes provided in the base, then slide a circlip on to
each axle, followed by a wheel. Secure each wheel with a further circlip then
attach the plastic wheel hub covers.
Raise the saw using an appropriate tool, remove the blocks, then lower on to its
wheels. It will now be easier to manoeuvre to your desired location.
Clean rust protected surfaces with kerosene/paraffin or a mild solvent. DO NOT
use cellulose solvents such as paint thinners as these will damage painted surfaces.
Finally, wipe the cleaned, bare surfaces with a cloth impregnated with clean oil.
Attach the Work Stop Ref: Fig 2
Screw the Work Stop Support Bar (B) into
the hole in the Bed then screw on the
washer and nut to secure (C).
Thread the Work Stop (A) on to the Support
Bar and secure in some convenient position
with the grub screw provided.
Fig. 2
Attach the Hydraulic Ram Assembly
Screw the Ram lower mounting rod into
the bed as shown in Fig.3, then mount the
Ram on to top and bottom mountings,
arrowed in Fig 3a, securing with the nuts
and washers supplied.
Fig. 3
Fig. 3a
8
Remove Transportation Strap
The Arm is secured for transportation
purposes with a metal strap, shown in Fig.
4. Remove the two bolts, arrowed, and
retain both the strap and bolts.
Fig. 4
Prepare the Coolant Tank
Pull out Coolant Tank from the rear. Lift
off the lid and fill with Clarke Cutting Oil,
(see page 2), or Coolant (soluble oil),
mixed according to the manufacturers
recommendations. Do not allow to run
dry. Ensure the coolant is clean and
always of the correct consistency.
Change coolant frequently to preserve
the machines efficiency and prolong
blade life.
Fig. 5
Overview
The machine comprises a 1 HP Motor which drives the blade via drive belts and pulleys,
allowing blade speeds to be selected, depending upon the type of material being cut.
The workpiece is held in a Vice which may be swivelled to provide accurate angle
cutting, and a work stop provides for stock pieces of equal length to be cut without
having to measure each piece individually.
Downwards pressure exerted by the blade is adjustable, via an hydraulic ram
acting on the Arm, and a coolant pump delivers coolant to the cutting area to
cool the blade, maximising blade life. The machine will stop automatically once
the cutting operation is complete.
Raising and Lowering the Arm
The hydraulic ram and other fittings, used to control the lowering of the Arm are
shown in Fig. 3a at A and B.
To RAISE the Arm, Using the handle adjacent to the Blade Tension Adjuster Knob,
lift the Arm so that it pivots to the vertical position, where it will remain.
To LOWER the Arm, first turn Knob ‘A’ Fig. 3a Fully clockwise, then turn the lever ‘B’ so
that it is at 6 o’clock, i.e. fully open.
9
Grasp the Arm and attempt to lower it, whilst simultaneously turning the knob ‘A’,
anticlockwise. Turn the knob until the required rate of descent is achieved.
The nut on the stem of Knob ‘A’ may be used to lock the valve in any particular
position, thereby ensuring the rate of descent, and hence cutting pressure is
constant - for repetitive work.
Preparation for Use
Warning! Do not attempt to start the machine until ALL the following checks
and adjustments are carried out. Ensure the plug is disconnected from mains.
To achieve the best performance, and to maintain the maximum level of safety,
the blade must be set up correctly.
a. Blade tension must be correct to ensure the blade circulates correctly and
to prevent the blade from wandering during the cutting operation
b. The blade cutting area is fitted with blade guides, which support the blade
whilst cutting. It is VITAL that these guides are correctly adjusted.
A. Tensioning the Saw Blade
Turn the Blade Tension Adjusting Knob,
arrowed in Fig. 6, clockwise to increase
tension, anticlockwise to decrease.
The knob is provided with a spring lock to
ensure it does not move during use or
whilst the bandsaw is being moved.
The blade needs to be tight enough to
give a straight cut without allowing it to
wander or slip, but must not be too tight
so that it is rigid, there must be a certain
degree of flexibility.
The correct tension is 700-900kgs, as
measured with a blade tension gauge.
To tension without a gauge, slacken off adjuster so that the blade sags, then
screw in again (clockwise) until all sag has been eliminated. Finally, turn the
adjuster a further two complete turns. See ‘Maintenance’ for blade installation
and tensioning a new blade.
If the saw is not being used for some time, eg. at the end of a working day, we
recommend that you relieve the tension on the blade.
10
Fig.6
B. Adjusting the Blade Guides
The blade guide adjustments are factory
set, and it should not normally be necessary
to readjust unless maintenance, effecting
the guides, has been carried out. See
‘Maintenance’ for details of adjustment.
It is however MOST IMPORTANT that the
Moveable Blade Guide Carriers (A)
are set to ensure that the blade is
supported
as possible,
any area of the blade, which is not
used for cutting, is covered.
Figs.7 & 8 show the Moveable Guide
Carriers at their minimum extension.
Set the Moveable Guide Carriers as
close to the work as possible, without
the possibility of them fouling the work
during the cutting process, as the Arm
lowers.
The Guide Carriers are secured by
Knobs ‘B’, Ensure they are tight before
starting the machine.
It follows, that this adjustment is carried
out once the workpiece has been
secured in the vice
as close to the workpiece
and also to ensure that
Ref: Figs. 7 & 8
Fig. 7
Fig. 8
C. Securing the Work in the Vice
The vice may be set at an angle, as described below.
Each vise jaw, ‘A’ and ‘B’, is secured with two bolts, one of which acts as a pivot.
Those securing vise jaw ‘B’ are shown at ‘X’ and ‘Y’.
Slacken the two bolts securing Vise Jaw
‘A’, sufficiently for the jaw to be pivoted
to the desired angle using an angle
gauge where necessary.
Ref: Fig.9
Fig. 9
NOTE: Use the edge of the bed as a
datum.
Ensure both securing bolts are then fully
tightened.
Similarly, slacken off bolts ‘X’ and ‘Y’ Jaw
‘B’ and screw the jaw up to meet Jaw
‘A’. Ensuring the jaws are both perfectly
parallel, before retightening both
securing bolts ‘X’ and ‘Y’.
11
D. Setting the Work Stop
The Work Stop may be used so that pieces of equal length may be cut, without
having to measure each individual piece.
With the workpiece set in the vice at the desired position, and firmly held in
place, slacken off the grubscrew and bring the work stop up to the work, then
retighten the grub screw, It is now a simple matter, once the first cut has been
made, to open the vice jaws, slide the workpiece out until it touches the work
stop and retightening the vice jaws ready for the next cut.
Ref: Fig 2
E. Setting the Cutting Speed
The saw blade is driven by an electric
motor via a drive belt and a pulley
system,, shown in Fig. 10.
Four steps are provided, and by
positioning the belt according to the
chart below, four saw band speeds
may be selected.
The chart is duplicated within the pulley
cover.
Fig. 10
NOTE: It is important that the microswitch within the cover (arrowed in Fig.10)
operates correctly. When closing the cover ensure it is heard to ‘click’.
Cutting speeds vary according to the type, size and shape of material being cut.
Generally, the harder the material, the slower the speed, and the following may
be used as a guide in order to determine the cutting speed for the material being
cut.
MATERIAL RECOMMENDED CUTTING SPEED M/min
Aluminium 98
Brass Sheet/Tubing 59-98
Carbon Steel 34-41
Cast Iron 34
High Speed Steel 34
12
To reposition the drive belt, proceed as follows: Ref: Figs. 11 & 12
REMEMBER to ensure the machine is disconnected from the mains supply.
1. To gain access to the drive belt, undo the screw securing the pulley cover, and
open the cover, noting the microswitch mounted on the base of the casing.
2. Slacken off the securing bolt on the underside of the mounting plate, shown at ‘B’.
3. Undo the locknut shown at ‘A’, then screw OUT (anticlockwise) the adjuster bolt
until the drive belt is slack enough to be repositioned on the appropriate pulleys.
4. Re-tension the belt by screwing IN (clockwise) the adjuster bolt ‘A’, until one
side of the belt can be deflected by approx. 1/2”, midway between the pulleys,
using reasonable thumb pressure. When satisfied, tighten the locknut ‘A’,
followed by securing bolt ‘B’
Fig. 11
Fig. 12
View from beneath
motor mounting plate
Using the Bandsaw Ref: Fig.13
Ensure the blade is correctly tensioned, the workpiece firmly secured, the cutting
speed set, Blade Guides correctly positioned and the Arm is in the raised position.
Lower the Arm as described on page
9, gently, and when the blade
approaches the workpiece, shut OFF
the oil flow to the Ram by turning the
lever ‘B’, to the 9 o’clock position,
(This will stop the Arm from
descending further), then turn the
knob ‘A’ fully clockwise.
Taking all necessary precautions, plug
the machine into the mains supply
and switch ON by pressing the GREEN
button marked ‘I’ (shown in Fig. 14).
Fig. 13
13
To switch OFF press the RED button
marked ‘O’,
Fig. 14
NOTE: If this is the first time you have
operated your machine, or if a new
blade has been installed, allow the
blade to run completely off load for a
few minutes to allow the blade to settle.
With the blade running at full speed,
turn the Lever ‘B’Fig 3a, to the 6 o’clock
position again, then gently turn knob ‘A’
anticlockwise so that the blade slowly
lowers at the desired rate, until it
contacts the workpiece and cutting
begins. Remember, do not start to cut
on a sharp edge.
At this point, switch ON the coolant
pump by pressing the GREEN button
marked ‘I’ (see Fig.14).
The rate of descent of the Arm determines the cutting rate and is therefore
controlled by the knob ‘A’, Fig 3a.
The cutting rate is dependant upon two main factors.......the type of material and
the thickness of cut, (which may not be constant). It therefore becomes a matter of
‘feel’. Ideally, blade pressure should be not so light so that it simply ‘rubs’ the work,
and not so heavy as to cause the blade to wander off line or ‘grab’ the work.
Fig. 15
When the Arm reaches the bottom of
its travel, a bracket, attached to the
Arm and carrying an adjuster, shown at
‘B’ Fig.15, activates a microswitch, ‘A’
switching Off the machine. ALWAYS
ensure the adjuster is set so that the
microswitch operates correctly.
‘Running In’ the Blade
To gain the maximum working life from your blade it is also essential for a new
blade to be ‘RUN IN’ for a short period of time. This is done by applying a lighter
cutting pressure on the first few cuts made by the blade. As a guide the ‘Running
In’ cutting pressure should be half the normal cutting pressure. The cut will therefore
take longer to complete.
14
MAINTENANCE
WARNING!
This machine MUST be disconnected from the mains supply whenever
carrying out adjustments or maintenance of any kind.
A. Changing the Blade
When the blade becomes worn or defective in any
way it should be replaced immediately. The following
process details how to change the blade, and should
be carried out by a skilled technician only.
Once the blade has been replaced it is
recommended that the blade is Run In for a short
period. (see ‘Running In’ the Blade on p.14)
1. Ensure the machine is disconnected from the mains
supply then raise the Arm to its vertical position and
lock in place using the ram.
2. Remove the four screws, arrowed in Fig. 16,
to allow the hinging back of the Blade Cover.
3. Lower the blade guide carrier ‘B’ Fig 16, fully.
4. Remove BOTH sliding blade covers, attached to
the blade guide carriers, by removing their two
securing screws, arrowed in Fig 17.
5. Turn the Blade Adjuster Knob ‘A’ anticlockwise in
order to lower the idler pulley. This will remove all
tension from the blade, allowing it to be pulled from
the pulleys and from between the guide bearings,
paying due care to the sharpness of the teeth,
6. Carefully feed the new blade between the blade
guide bearings, ensuring the teeth are pointing
DOWNWARDS, and then over the top pulley. Hold
in position with one hand whilst stretching the
blade downwards, and over the bottom pulley.
Hold in place whilst applying slight tension by screwing
the blade tension adjuster knob clockwise.
7. Ease the blade on to the pulleys as far as possible.
8. Tension the saw blade according to the instructions
on page 10.
9. Replace the hinged blade cover and both sliding
blade covers, ensuring they are secure.
10. Observing all precautions, plug the input cable
into the mains and start the machine.
15
15
Fig. 16
Fig. 17
If the pulleys have not been interfered with, the blade should run evenly , running
just off the lip on the back of each pulley. If it wanders off the pulleys, or bears
heavily on the lip at the back of the pulley, evidenced by a harsh scraping sound,
then tracking adjustment will be necessary - see page 17
B. Adjusting the Blade Guides
(i) Guide Bearings (Ref: Fig 18)
Blade Guide bearing adjustment is critical in ensuring the blade runs true. This
adjustment is carried out at the factory, and the need for readjustment should
rarely occur. If cutting results are unsatisfactory, it is strongly recommended that
you try a new blade before readjusting the guide bearings. If a blade becomes
dull on one side for example, it will cause the blade to run off line. A new blade will
correct this.
If it does become necessary to adjust the
guide bearings, it is best carried out with
a new blade installed. The blade MUST
be correctly tensioned before any
adjustments are made.
With the Arm in the horizontal position,
slacken bearing securing nut ‘A’, then turn
the bearing using the flats on the threaded
shaft ‘B’, until it pinches the blade - the
bearing is eccentrically mounted.
Back off very slightly so that contact with
the blade is light, then tighten nut ‘A’
whilst holding the threaded shaft firmly
in place.
The guide bearings must not pinch the
blade, but must NOT be loose enough to
allow the blade to wander
Fig. 18
NOTE: Guide Bearings support the blade to
prevent it from twisting, and a roller is located
at the top edge of the blade to prevent vertical
movement, i.e. from being forced upwards,
away from the workpiece. This is shown at ‘D’.
It is now necessary to ensure this adjustment
is correct.
It is also IMPORTANT to ensure that the blade
runs in the right plane with relation to the bed
(and therefore the workpiece), i.e. at right
angles to the bed.
The two adjustments just described are carried
out by moving the complete carrier subassembly, as follows:
Fig. 19
16
(ii) Ensuring Blade is Square
a. Slacken screw ‘C’ Fig.18 so that the carrier may be moved laterally, i.e.
pivoted about screw ‘C’.
b. Place an engineers square (arrowed in Fig.19) on the bed, as near as
possible to the guide carrier, and bring up to the blade as shown in Fig.19.
c. Turn the guide carrier until the blade is perfectly in line with the engineers
square, then tighten the screw ‘C’, ensuring the roller ‘D’ is lightly touching
the top edge of the blade.
d. Repeat the process with the other blade guide carrier.
e. Check the alignment at the middle of the run, then bring the carriers together
and check again. Make any adjustment necessary to either carrier to ensure the
blade is at right angles to the bed, then ensure all nuts and screws are tight.
C. Blade Tracking Adjustment
This adjustment is carried out at the factory
and it should not normally require
readjustment. If the blade is thrown, first try
a new blade as this should normally cure
the problem. If the new blade does not
track correctly however, adjust the tracking
as follows:
1. Ensure the plug is disconnected and the
Arm in the vertical position. Adjust the
blade so that only moderate tension is
applied.
2. Slacken the two Hex socket head
screws, shown at ‘A’ fig.20, by one turn.
3. If the blade runs off the rim of the pulley
wheel, turn the Hex. socket head screw,
shown at ‘B’ fig.20 CLOCKWISE, slowly.
The blade will move back towards the
lip at the back of the pulley.
If it rubs up against the lip, a harsh
scraping sound will become apparent.
Turn the screw ANTICLOCKWISE until the sound disappears then tighten screws
‘A’.
4. Continue to monitor the action of the blade for a few moments to ensure it
runs neatly. If necessary, slacken off the two screws ‘A’ and adjust using screw
‘B’ accordingly.
Fig. 20
17
D. Adjusting Arm Weight
It is most important that the Arm be correctly balanced to ensure proper and
efficient performance from your bandsaw. Incorrect balance can result in crooked
cuts, tooth stripping, blade ‘popping’ etc. The hydraulic feed rate will NOT
necessarily compensate for improper arm weight.
The arm is correctly balanced at the factory, and
should not normally need adjustment. However,
should any of the conditions specified above
occur, arm weight should be checked as follows:
1. Secure the arm, using the Ram in the
horizontal position.
2. Attach a tension gauge or fish type scale to the
handle adjacent to the blade adjuster and lift
the arm with the gauge or scale. The gauge or
scale should register no more than 5-6kg ONLY.
If necessary, adjust the tension on the balance
spring, using the adjuster arrowed in Fig.21 until
this value is attained. Ensure the locknut on the
adjuster is tightened when completed.
Fig. 21
E. Cleaning
It is recommended that the Bandsaw is kept clean and free of filings, swarf etc.,
by cleaning with a brush , paying particular attention to the Blade Guides. Keeping
the vice free from residue will ensure that the work sits square to the blade, giving
a more accurate cut.
Always clean and dry the machine at the end of a days work, particularly when
coolant has been used.
E. Lubrication
To ensure proper running of your machine,
the following Lubrication Schedule should be
followed, using SAE30 oil.
1.
Weekly, 6-8 drops on the Driven
Pulley Bearing (Lower Pulley). The
Pulley Cover must be removed to
accomplish this task.
2.
As required - Vice Screw ....ensure it is
clean and free from foreign material.
3. Annually - The oil requires changing in the Gearbox Annually, or more often if
the oil becomes contaminated, or an oil leak occurs. To change the oil, remove
the drain plug, shown at ‘A’ Fig,22 and allow the oil to drain into a container.
Replace the drain plug then remove the breather/filler plug, shown at ‘B’. Fill
to the bottom of the oil filler hole with gear oil, then replace breather plug.
18
Fig. 22
Troubleshooting
Problem
Excessive Blade Breakage
Permanent Blade Dulling
Blade Cuts Crooked
Blade Cuts Rough
Unusual Wear on Side/Back
of Blade
Teeth breaking from blade
Motor Overheating
Possible Cause
1. Incorrect blade tension
2. Incorrect speed or feed
3. Material loose in vice
4. Blade rubs on wheel flange
5. Teeth too coarse for material
6. Teeth in contact with work before
saw is stared
7. Misaligned guides
1. Teeth too coarse
2. Speed too high
3. Inadequate feed pressure
4. Hard spots or scale in/on material
5. Work hardening of material
(particularly stainless steel)
6. Blade installed backwards
7. Insufficient blade tension
1. Work not square
2. Feed pressure too great
3. Guide bearing not adjusted properly
4. Inadequate blade tension
5. Moveable Blade Guides too far from
workpiece
6. Dull blade
7. Speed incorrect
8. Blade guide assembly loose
9. Blade guide bearing assy. loose
10. Blade tracks too far away from
wheel flanges
1. Too much speed or feed
2. Blade is too coarse
1. Blade guides worn
2. Blade guide bearings not adjusted
correctly
3. Blade guide bearing brackets loose
1. Teeth too coarse for work
2. Too heavy feed/too slow feed
3. Vibrating work piece
1. Blade tension too high
2. Blade is too fine for work (Heavier,
soft material)
3. Gears need lubrication
4. Idler wheel needs lubrication
Remedy
1. Adjust to where blade just does not
slip on wheel
2. Check Machinist Handbook
3. Clamp work securely
4. Adjust wheel alignment
5. Check Machinist Handbook for
recommended blade type
6. Place blade in contact with work
after motor is started
7. Adjust guides
1. Use finer tooth blade
2. Try lower speed
3. Increase feed pressure
4. Reduce speed increase feed
pressure
5. Increase feed pressure
6. Remove blade, twist inside out and
reinstall blade.
7. Increase tension to proper level
1. Adjust vice to be square with blade
2. Reduce feed pressure
3. Adjust guide bearings.
4. Increase blade tension
5. Adjust moveable guide
6. Replace blade
7. Select correct speed
8. Tighten guide assy.
9. Tighten guide assy.
10. Re-track blade according to
operating instructions
1. Reduce speed and feed
2. Replace with finer blade
1. Replace
2. Adjust Guide Bearings
3. Tighten
1. Use finer tooth blade
2. Increase feed pressure and/or
speed
3. Clamp work securely
1. Reduce tension on blade
2. Use coarser blade
3. Check gearbox oil
4. Oil bearing/shaft on idler wheel
19
Spare Parts List
DESCRIPTION QTY PART NO.No.
1 Table 1 QB7MB001
2 Acme Screw 1 QB7MB002
3 Washer 1 QB7MB003
4 Hex. Socket Screw 1 QB7MB004
5 Wheel 1 QB7MB005
6 Hex Head Screw 1 QB7MB006
7 Washer 2 QB7MB007
8 Vise Jaw Bkt (Front) 1 QB7MB008
9 Bracket 1 QB7MB009
10 Hex. Skt Hd Screw 1 QB7MB010
11 Hex. Nut 1 QB7MB011
12 Washer 1 QB7MB012
13 Pivot Bolt 1 QB7MB013
14 Hex. Hd. Crew 1 QB7MB014
15 Vise Jaw Bkt (Rear) 1 QB7MB015
16 Bushing 1 QB7MB016
17 Support Rod 1 QB7MB017
18 Hex. Skt Set Screw 1 QB7MB018
19 Arm Support Bkt 1 QB7MB019
20 Washer 2 QB7MB020
21 Hex. Head Screw 2 QB7MB021
22 Support Plate 1 QB7MB022
23 Spring 1 QB7MB023
24 Spring Adj. Rod 4 QB7MB024
25 Spring Handle Bkt 1 QB7MB025
26 Hex Screw 1 QB7MB026
27 Washer 1 QB7MB027
28 Hex Nut 1 QB7MB028
29 Washer 1 QB7MB029
30 Hex. Soc. Screw 1 QB7MB030
31 Stock Stop Rod 1 QB7MB031
32 Stop Block 1 QB7MB032
33 Hex. Hd Screw 1 QB7MB033
34 Washer 1 QB7MB034
35 Arm Locking Lever 1 QB7MB035
36 Plate 1 QB7MB036
37 Hex. Hd. Screw 1 QB7MB037
38 Hex. Nut 1 QB7MB038
39 Hex. Hd. Screw 2 QB7MB039
40 Washer 2. QB7MB040
41 Hex. Hd. Screw 1 QB7MB041
42 Hex. Nut 1 QB7MB042
43 Hex. Hd. Screw 2 QB7MB043
44 Washer. 2 QB7MB044
45 Switch Box 1 QB7MB045
46 Coolant Pump Sw. 1 QB7MB046
47 Cover 1 QB7MB047
48 Round Hd. Screw 2 QB7MB048
49 NVR Switch 1 QB7MB049
50 Wire Retainer 1 QB7MB050
DESCRIPTION QTY PART NO.
No.
51 Coolant Pan 1 QB7MB051
52 Filter 1 QB7MB052
53 Hex. Hd. Screw 8 QB7MB053
54 Washer 8 QB7MB054
55 Hex. Nut 8 QB7MB055
58 Hex. Head Screw 8 QB7MB058
59 Washer 16 QB7MB059
60 Hex. Nut 8 QB7MB060
61 Safety Switch 1 QB7MB061
62 Limit Switch 1 QB7MB062
63 Panel 1 QB7MB063
64 Hose 1 QB7MB064
65 Hex. Head Screw 1 QB7MB065
66 Washer 12 QB7MB066
67 Hex. Nut 6 QB7MB067
68 Coolant Tank 1 QB7MB068
69 Pump Support 1 QB7MB069
70 Cooling Pump 1 QB7MB070
71 Hex. Hd Screw 4 QB7MB071
72 Washer 8 QB7MB072
73 Hex. Nut 4 QB7MB073
74 Hose Fitting 1 QB7MB074
75 Hose Clamp 2 QB7MB075
76 Hose 1 QB7MB076
77 Tube Fitting 1 QB7MB077
78 Nozzle Assembly 1 QB7MB078
79 Wheel Axle 2 QB7MB079
80 Wheel 4 QB7MB080
81 Circlip 4 QB7MB081
82 Cylinder 1 QB7MB082
83 Washer 3 QB7MB083
84 Hex. Hd Screw 3 QB7MB084
85 Hex. Hd Screw 1 QB7MB085
86 Hex Nut 1 QB7MB086
87 Cylinder Bracket 1 QB7MB087
88 Support Rod 1 QB7MB088
89 Spring Washer 1 QB7MB089
90 Washer 1 QB7MB090
91 Hex Nut 1 QB7MB091
92 Gearbox 1 QB7MB092
93 Worm Shaft 1 QB7MB093
94 Key 1 QB7MB094
95 Bearing 1 QB7MB095
96 Bearing Bushing 1 QB7MB096
97 Bearing 2 QB7MB097
98 C-Ring 1 QB7MB098
99 Hex Skt. Set Screw 1 QB7MB099
100 Worm Pulley 1 QB7MB100
101 Hex Skt Set Screw 2 QB7MB101
102 Belt 1 QB7MB102
20
Spare Parts List....cont.
No.
DESCRIPTION QTY PART NO.
103 Hex. Head Screw 4 QB7MB103
104 Washer 4 QB7MB104
105 Gearbox Cover 1 QB7MB105
106 Gearbox Gasket 1 QB7MB106
107 Key 1 QB7MB107
108 Worm Gear 1 QB7MB108
109 Transmission Shaft 1 QB7MB109
110 C-Ring 1 QB7MB110
111 Key 1 QB7MB111
112 Bushing 1 QB7MB112
113 Bearing 1 QB7MB113
114 Bearing Bush 1 QB7MB114
115 Bearing 1 QB7MB115
116 Bearing Cover 1 QB7MB116
117 Screw 3 QB7MB117
118 Arm 1 QB7MB118
119 Spring Washer 4 QB7MB119
120 Hex. Hd. Screw 4 QB7MB120
121 C-Ring 1 QB7MB121
122 Pulley (Rear) 1 QB7MB122
123 Hex. Skt. Set Screw 1 QB7MB123
124 Pin 1 QB7MB124
125 Draw Block 1 QB7MB125
126 Pulley Shaft 1 QB7MB126
127 Guides Plate 2 QB7MB127
128 Sliding Block 1 QB7MB128
129 Hex. Hd. Screw 1 QB7MB129
130 Kex. Hd. Screw 2 QB7MB130
131 Spring Washer 2 QB7MB131
132 Washer 4 QB7MB132
133 Hex Hd. Screw 4 QB7MB133
134 Spring 1 QB7MB134
135 Blade Adj. Knob 1 QB7MB135
136 Searing Bushing 1 QB7MB136
137 C-Ring 1 QB7MB137
138 Bearing 2 QB7MB138
139 Pulley (Front] 1 QB7MB139
140 Blade 1 QB7MB140
141 Washer 1 QB7MB141
142 Hex. Hd. Screw 14 QB7MB142
143 Switch Hip 1 QB7MB143
144 Washer 1 QB7MB144
145 Round Hd. Screw 1 QB7MB145
140 Nozzle Support 1 QB7MB146
147 Round Screw 2 QB7MB147
140 Hex. Hd. Screw 2 QB7MB148
149 Adj. Bkt (rear) 1 QB7MB149
150 Hex Nut 4 QB7MB150
151 Spring Washer 4 QB7MB151
152 Bearing 2 QB7MB152
153 Blade Adj. (rear) 1 QB7MB153
No. DESCRIPTION QTY PART NO.
154 Pin 2 QB7MB154
155 Washer 1 QB7MB155
156 Hex Skt Screw 1 QB7MB156
157 Deflector Plate 1 QB7MB157
158 Hd. Screw 2 QB7MB158
159 Bearing Shaft 2 QB7MB159
160 Eccentric Shaft 2 QB7MB160
161 Bearing 8 QB7MB161
162 C-Ring 4 QB7MB162
163 Adj. Bracket (Front) 1 QB7MB163
104 Blade Adj. (Front) 1 QB7MB164
165 Blade Cover (Front) 1 QB7MB165
158 Round. Hd Screw 2 QB7MB166
167 Hex Soc. Screw 1 QB7MB167
168 Plum Screw 2 QB7MB168
169 Blade Bag Cover 1 QB7MB169
170 Wheel Cover 1 QB7MB170
171 Washer 4 QB7MB171
172 Round Hd.screw 4 QB7MB172
173 Plum Screw 1 QB7MB173
174 Motor Pulley Cover 1 QB7MB174
175 Pulley Cover 1 QB7MB175
176 Washer 2 QB7MB176
177 Hex Hd. Screw 2 QB7MB177
178 Key 1 QB7MB178
179 Hex. Skt. Set Screw 1 QB7MB179
180 Motor Pulley 1 QB7MB180
181 Hex. Hd Screw 4 QB7MB181
182 Washer 8 QB7MB182
183 Motor 1 QB7MB183
184 Hex.Skt.Screw 1 QB7MB184
185 Hex Nut 1 QB7MB185
186 Motor Mount Plate 1 QB7MB186
187 Hex. Nut 4 QB7MB187
188 Hex. Hd. Screw 4 QB7MB188
189 Washer 4 QB7MB189
190 Motor 1 QB7MB190
191 Hex Nut 1 QB7MB191
192 Hex. Hd Screw 1 QB7MB192
193 Hex Hd. Screw 2 QB7MB193
194 Washer 2 QB7MB194
195 Support Plate 1 QB7MB195
196 Washer 1 QB7MB196
197 Nut 3 QB7MB197
198 Vent Plug 1 QB7MB198
199 Acme Nut 1 QB7MB199
200 Button 1 QB7MB200
201 Retainer 1 QB7MB201
202 Washer 1 QB7MB202
203 Screw M4x8 1 QB7MB203
21
Spare Parts Diagram
22
Spare Parts Diagram
Parts & Service contacts
Please contact your nearest dealer, or CLARKE International, as follows:
PARTS & SERVICE TEL: 020 8988 7400
PARTS & SERVICE FAX: 020 8558 3622
or e-mail as follows:
PARTS: Parts@clarkeinternational.com
SERVICE: Service@clarkeinternational.com
23
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