Huvema HU 250 CS User manual

HU 250 CS
CUTTING-OFF-SAWS

2
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
Table of conTenTs
1. General safety rules for all machines 3
2. Technical data 4
2.1. The HU 250CS speed comprises as follows: 4
2.2. Survey and sketch of dimensions 4
3. Description of machine 4
4. Installation 5
4.1. Installation and mounting 5
4.2. Coolant 5
4.3. Electricity 5
5. Operation 6
5.1. Selection of the sawblade 6
5.2. Selection of pitch and tooth form 6
5.3. Sawing Capacity 7
5.4. Installing and replacing the saw blade 7
5.5. Saw feed 7
5.6. Sawing speed 8
5.7. Clamping the material 8
5.8. Mitre-sawing 8
5.9. Cooling 8
5.10. Start/stop 8
6. Maintenance 8
6.1. General 9
6.2. Lubrication 9
6.3. Grinding the sawblades 9
7. Trouble shooting 9
8. Survey of available saw blades 10
9. Coolant system 11
10. Parts drawing for HU250CS 12
10.1. Parts list for HU 250CS 13

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CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
cuTTing off saw Hu 250 cs
1.
general safeTy rules for all macHines
N.B.: Read the instructions carefully in order to avoid any problems.
As with all machinery there are certain hazards involved with operation and use of this machine. Using the
machine with respect and caution will considerably lessen the possibility op personal injury. However, if normal
safety precautions are overlooked or ignored, personal injury to the operator may occur. Observe these rules
insofar as they are applicable to this particular machine.
This machine was designed for certain applications only. We strongly recommend that this machine NOT be
modified in any way and/or used for any application other than for which it was designed.
If you have any questions relative to its application DO NOT use the machine until you have contacted your
dealer.
1. For your own safety read the instruction manual before operating the tool.
2. Keep all guards in place and in working order.
3. Ground all tools.
4. Remove adjusting keys and wrenches. Make a habit of checking the machine before turning it on.
5. Keep the work area clean. Cluttered areas and benches invite accidents.
6. Do not use in a dangerous environment, such as damp or wet locations or expose to rain. Always keep the
work area well-lit.
7. Keep children and visitors away. They must be kept at a safe distance from the machine at all times.
8. Make sure that the work area is not accessible to unauthorised persons. Use padlocks, master switches,
remove starter keys etc.
9. Never overload the machine. The capacity of the machine is at its largest when properly loaded.
10. Do not force the machine or attachment to do a job for which it was not designed.
11. Wear proper apparel. No loose clothing, gloves, neckties, rings, necklaces, bracelets or jewellery: they may
get caught in moving parts. No slip footwear is recommended. Wear a hairnet to contain long hair.
12. Always wear safety glasses and work according to safety regulations. Use a face or dust mask if operation is
dusty.
13. Always secure workpiece tightly using a vise or clamping device. This will keep both hands free to operate
the machine.
14. Do not overreach. Keep your proper footing and balance at all times.
15. Maintain tools in top condition. Keep them sharp and clean. Read the instructions carefully and follow the
instructions for cleaning, lubrication and tool replacement.
16. Lubricate the machine and fill all oil reservoirs before operation.
17. Disconnect tools before servicing and when changing accessories such as blades, bits, cutters etc.
18. Use only recommended accessories. Consult the owner’s manual for recommended accessories. The use of
improper accessories may cause hazards.
19. Avoid accidental starting. Make sure the on/off switch is in the “OFF”position before plugging in the power
cord.
20. Never stand on the machine or tools. Serious injury could occur if the machine is tipped or if the cutting tool
is accidentally touched.
21. Check damaged parts. Replace or repair damaged parts immediately. Check machine for alignment of
moving parts, binding of moving parts, breakage of parts, mounting and any other conditions that may
affect its operation.
22. Direction of feed. Feed work into a blade or cutter against the direction of rotation of the blade or cutter only.
23. Never leave tool running unattended. Do not turn power off until it has come to a complete stop.
24. Alcohol, medication, drugs. Never us the machine while under the influence of alcohol, medication or drugs.
25. Make sure the tool is disconnected from the power supply, before servicing, repairing etc.
26. Keep the original packing for future transport or relocation of the machine.

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CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
addiTional safeTy rules
Always keep in mind that:
• the machine must be switched off and disconnected from the power supply during maintenance and repairs,
• clamped workpieces may only be measured when the machine is switched off.
Never lean over the machine, mind loose clothing, ties, jewellery etc. and wear a cap.
Do not remove safety devices or guards. Never use the machine while a guard is open.
Always use safety glasses for machining rough materials.
Burrs and chips should only be removed using a sweeper or other aid, never with your bare hands!
Never leave the machine running unattended.
Always wear safety glasses.
2.
TecHnical daTa
2.1.
THe Hu 250cs speed comprises as follows:
High speed > sawing speed pos. 1: 40 m/min
Low speed > sawing speed pos. 2: 80 m/min
2.2.
survey and skeTcH of dimensions
See figure 2.01
Height : 1750 mm
Width : 555 mm
Depth : 830 mm
Weight : 175 kg
3.
descripTion of macHine
The machine is standard equipped with a machine base with
incorporated cutting oil tank and pump.
The machine is fitted with a tolerance-free long-life worm and
worm wheel. The worm gear runs in an oil bath case and is virtually
maintenance-free.
The machine is fitted with a double, self-centring material vice.
The machine can mitre, slot and cut recessed corners in both directions. For this last form of operation it is of
special importance that the saw unit as a whole can turn around its axis.
The machine can saw various profiles in various dimensions and cross -sections.
A survey of these can be found in chapter 5.3 “Sawing capacity”.
The protective guard opens and closes automatically. The saw blade can easily be exchanged. The machine as
standard is equipped with an adapter for the saw blade (see technical data). If ordered a different adapter can be
supp lied.
3
exceeded all claims relating to the faults concerned will expire. Claims about faults which are not
externally noticeable are to put in as soon as po ssible, however, not later than two weeks after
expiry of the period of guarantee. If this period is exceeded all claims relating to the faults
concerned will expire. The purchaser’s appeal for guarantee does not relinquish his contractual
obligations towards us. As long as the purchaser does not fulfil his contractual obligations
towards us we deny our obligation to render guarantee.
2 Technical data
2.1 The HU 250CS speed comprises as follows:
High speed > sawing speed pos. 1: 40 m/min
Low speed> sawing speed pos. 2: 80 m/min
2.2 Survey and sketch of dimensions (see fig. 2.01)
Dimensions and weight of the machine
HU 250CS
Height :1750 mm
breadth :555 mm
Depth :830 mm
Weight :175 kg
Fig. 2.01
3. Description of machine
The machine is standardly equipped with a machine base with incorporated cutting
oil tank and pump.
The machine is fitted with a tolerance-free long-life worm and worm wheel. The
worm gear runs in an oil bath case and is virtually maintenance -free.
The machine is fitted with a double, self-centring material vice.
The machine can mitre, slot and cut recessed corne rs in both directions. For this last
form of operation it is of special importance that the saw unit as a whole can turn
around its axis.
The machine can saw various profiles in various dimensions and cross -sections.
A survey of these can be found in cha pter 5.3 “Sawing capacity”.
HU 250CS
Fig. 2.01

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CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
4.
insTallaTion
4.1.
insTallaTion and mounTing
Unpack the machine.
• Determine where the sawing machine will be placed. In doing so take into account the feed and discharge of
materials, optional built-on accessories, maintenance and repairs.
• Remove the plastic plug from the saw head (fig. 4.01 B). If so required a lifting hook M20 DIN 580 can be
screwed into the hole.
• Place the saw unit - if necessary by means of hoisting equipment – on the machine base (cover at the rear)
and attach each other.
• Secure the machine to the floor. The necessary holes have already been made in the machine base.
• Install the handle in the saw head and lock it (fig 4.01A).
• Install the 3 short handles in the boss of the machine vice.
• Install the stretcher in the clamp.
• Slide the plastic tube coming from the cooling pump onto the tap which is positioned on top of the
protective guard of the saw unit (fig 4.02A).
• Check on the level gauge of the saw head whether it contains sufficient oil. If necessary fill up (fig. 4.01, see
arrow).
• Install the cover at the rear of the machine base.
• Install the saw blade (see chapter 5.4).
4.2.
coolanT
The sawing machine can, depending on the version, be equipped with a circulation system or with atomized
lubrication.
Circulation system
Fill the tank with coolant. Use sawing coolant and absolutely NO cutting oil. Bewo recommends Bewo Oil S,
avaible from your dealer. The coolant must be diluted in waer in a ratio between 1:10 and 1:20, depending on the
kind of material. Add the oil slowly to the water while stirring it continually. The filler cap is positioned at the rear
of the machine base. The capacity of the tank is 30 litres. The coolant circulates and for the larger part flows back
into the tank. After some time the coolant will be used up completely and the tank will have to be filled again. A
filter is also incorporated in the coolant circuit.
4.3.
elecTriciTy
Have the electrical connections made by a qualified installer. Connect the machine in accordance with the
electrical diagram applying to your machine.
Saw motor Two-speed pole changing motors are suitable for one mains voltage only. Therefore check whether
the voltage indicated on the motor plate complies with the local main voltage.
• Check whether the direction of rotation of the saw spindle corresponds to the arrow on the safety guard.
• If the motor rotates in the wrong direction two phases wires must be switched.
4
The protective guard opens and closes automatically. The saw blade can easily
be exchanged. The machine as standard is equipped with an adapter for the
saw blade (see technical data). If ordered a different adapter can be supp lied.
4 Installation
4.1 Installation and mounting
Unpack the machine.
•Determine where the sawing machine will be placed. In doing so take into account the
feed and discharge of materials, optional built -on accessories, maintenance and repairs.
•Remove the plastic plug from the saw head (fig. 4.01 B). If so required a lifting hook
M20 DIN 580 can be screwed into the hole.
•Place the saw unit -if necessary by means of hoisting equipment –on the machine
base (cover at the rear) and attach each oth er.
•Secure the machine to the floor. The necessary holes have already been made in the
machine base.
• Install the handle in the saw head and lock it (fig 4.01A).
• Install the 3 short handles in the boss of the machine vice.
• Install the stretcher in the clamp.
•Slide the plastic tube coming from the cooling pump onto the tap which is positioned on
top of the protective guard of the saw unit (fig 4.02A).
•Check on the level gauge of the saw head whether it contains sufficient oil. If
necessary fill up (fig. 4.01, see arrow).
• Install the cover at the rear of the machine base.
• Install the saw blade (see chapter 5.4).
.
4.2 Coolant
The sawing machine can, depending on the version, be equipped with a circulation
system or with atomized lubrication.
Circulation system
Fill the tank with coolant. Use sawing coolant and absolutely NO cutting oil. Bewo

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CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
5.
operaTion
5.1.
selecTion of THe sawblade
After years of research we recommend you to use only Timewinner saw blades. These HSS saw blades are of top
quality and are made of the base material DMO 5. These saw blades have undergone a special heat treatment
which guarantees high wear resistance. Owing to the microsporous structure the cutting oil is transferred quicker
int o the saw cut. This means longer life before resharpening and less chance of cold welding.
The quality of the saw blade is of great importance. The selection of the correct pitch depends on the material to
be sawn. The selection of the correct pitch and ra ke angle is of great importance for the life of the sawblade.
5.2.
selecTion of piTcH and TooTH form
If the pitch is too small and the length of the cut too large, the cut material cannot be taken into the tooth cavity.
The chip will get stuck in the tooth cavity, so that it is inactive in case of a second cut of the same tooth. This can
cause the saw blade to jam and break. A pitch which is too large will cause the sawing tooth to hack as a result of
which teeth can break free. For the sawing of profiles it must be taken as a rule that at least two teeth of the saw
blade are in cut. Fig. 5.01 will help you determine the pitch for the material to be sawn.
Hint If a short, hard jerk is felt during sawing and the saw starts jolting, do not continue. I n such cases it is almost
certain that at one or more places a fine chip has fused away at the flank of the saw tooth. This causes the saw to
be slightly thicker at certain places. Remove the saw blade and remove the fused material with a fine-grained,
high-grade saw file.
Selection of the tooth form.
Besides a well selected pitch the following factors, too, are of great importance to facilitate the correct machining
of the material (fig. 5.02):
Clearance angle ß and rake angle y of the tooth have been selected correctly in view of the material to be sawn.
the principle is as follows.
6
Clearance angle ß and rake angle y of the tooth have been selected correctly in view of the
material to be sawn. the principle is as follows.
Material
Clearance angle
Rake angle
Steel
8
22°
Stainless steel
6
15°
Non-ferrous
12
25°
Form of tooth cavity large enough compared to the pitch.
A quick removal of the cut material and a correct depth and rounding of the tooth

7
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
A quick removal of the cut material and a correct depth and rounding of the tooth cavity are of the utmost
importance. The tooth cavity must be large enough for the removed chips to be bend as long as the tooth is
cutting. When the cutting tooth leaves the saw cut, the chip drops out of the tooth cavity.
The alternate saw (alternately bevelled edge) is often used for small pitches, especially up to 4 mm.
The precutting and finishing teeth are used for larger, solid material, usually from pitch 4 mm onwards. These
teeth ensure that the chips are not all of the same length.
If a chip were to be cut out the normal way, it would get hot, expand and become wider than the width of the cut.
This would caus e it to get stuck, as a result of which the chip could not be removed from the cut. The finishing
tooth must be positioned 0.2 to 0.4 mm higher than the precutting tooth. The larger the pitch, the higher the
precutting tooth must be placed as compared to t he finishing tooth.
Consequently, only special machines are suitable for regrinding these teeth. When the blade has lost its cutting
power, do not strain it. As a result the teeth may break off, which doubles the regrinding costs.
5.3.
sawing capaciTy
For the maximum capacity in mm see the schedule for the profile figure/cross -cut in relationship with the mitre
angle.
5.4.
insTalling and replacing THe saw blade
• Set the main switch in the off position.
• Put the saw head in the upper position.
• Open the guards (fig. 5.03A).
• Release the socket head screw M8 of the saw spindle (fig. 5.03B) and
remove the saw flange.
• Remove the saw blade.
• Carefully clean the saw spindle and the saw flange.
• Installing is done in reverse order. Pay attention to the direction of
rotation of the sawblade. Make sure the saw blade is placed flush
against the flange of the saw spindle. Check the setting of the sawing
depth (see chapter 4.2). Do not forget to close the safety guard.
5.5.
saw feed
Manual saw feed The saw feed is determined by hand. The saw is lowered
onto the material by means of the handle. Press the saw blade firmly onto
the material, without using unnecessary force. When the saw pressure is
too high this can cause the saw to break; when the saw pressure is too low,
te saw will rapidly go blunt.
7
cavity are of the utmost importance. The tooth cavity must be large enough for the
removed chips to be bend as long as the tooth is cutting. When the cutting tooth
leaves the saw cut, the chip drops out of the tooth cavity.
The alternate saw (alternately bevelled edge) is often used for small pitches,
especially up to 4 mm.
The precutting and finishing teeth are used for larger, solid material, usually from
pitch 4 mm onwards. These teeth ensure that the chips are not all of the same length.
If a chip were to be cut out the normal way, it would get hot, expand and become
wider than the width of the cut. This would caus e it to get stuck, as a result of which
the chip could not be removed from the cut. The finishing tooth must be positioned
0.2 to 0.4 mm higher than the precutting tooth. The larger the pitch, the higher the
precutting tooth must be placed as compared to t he finishing tooth.
Consequently, only special machines are suitable for regrinding these teeth. When
the blade has lost its cutting power, do not strain it. As a result the teeth may break
off, which doubles the regrinding costs.
5.3 Sawing Capacity
For the maximum capacity in mm see the schedule for the profile figure/cross -cut in
relationship with the mitre angle. Write 90º we mean straight sawing.
HU250
CS
90º 80 70x70 70x70 70x70 90x50 35 35x35
60º 80 60x60 60x60 60x60 80x50 30 30x30
45º 80 60x60 60x60 60x60 60x60 25 25x25
5.4 Installing and replacing the saw blade
•Set the main switch in the off position.
•Put the saw head in the upper position.
•Open the guards (fig. 5.03A).
•Release the socket head screw M8 of the saw spindle
(fig. 5.03B) and remove the saw flange.
•Remove the saw blade.
•Carefully clean the saw spindle and the saw flange.
•Installing is done in reverse order. Pay attention to the
direction of rotation of the sawblade. Make sure the saw blade is
placed flush against the flange of the saw spindle. Check the
setting of the sawing depth (see chapter 4.2). Do not forget to close the safety guard.
7
cavity are of the utmost importance. The tooth cavity must be large enough for the
removed chips to be bend as long as the tooth is cutting. When the cutting tooth
leaves the saw cut, the chip drops out of the tooth cavity.
The alternate saw (alternately bevelled edge) is often used for small pitches,
especially up to 4 mm.
The precutting and finishing teeth are used for larger, solid material, usually from
pitch 4 mm onwards. These teeth ensure that the chips are not all of the same length.
If a chip were to be cut out the normal way, it would get hot, expand and become
wider than the width of the cut. This would caus e it to get stuck, as a result of which
the chip could not be removed from the cut. The finishing tooth must be positioned
0.2 to 0.4 mm higher than the precutting tooth. The larger the pitch, the higher the
precutting tooth must be placed as compared to t he finishing tooth.
Consequently, only special machines are suitable for regrinding these teeth. When
the blade has lost its cutting power, do not strain it. As a result the teeth may break
off, which doubles the regrinding costs.
5.3 Sawing Capacity
For the maximum capacity in mm see the schedule for the profile figure/cross -cut in
relationship with the mitre angle. Write 90º we mean straight sawing.
HU250
CS
90º
80
70x70
70x70
70x70
90x50
35
35x35
60º
80
60x60
60x60
60x60
80x50
30
30x30
45º
80
60x60
60x60
60x60
60x60
25
25x25
5.4 Installing and replacing the saw blade
•Set the main switch in the off position.
•Put the saw head in the upper position.
•Open the guards (fig. 5.03A).
•Release the socket head screw M8 of the saw spindle
(fig. 5.03B) and remove the saw flange.
•Remove the saw blade.
•Carefully clean the saw spindle and the saw flange.
•Installing is done in reverse order. Pay attention to the
direction of rotation of the sawblade. Make sure the saw blade is
placed flush against the flange of the saw spindle. Check the
setting of the sawing depth (see chapter 4.2). Do not forget to close the safety guard.
8
5.5 Saw feed
Manual saw feed The saw feed is determined by
hand. The saw is lowered onto the material by means
of the handle. Press the saw b lade firmly onto the
material, without using unnecessary force. When the
saw pressure is too high this can cause the saw to
break; when the saw pressure is too low, te saw will
rapidly go blunt.
5.6 Sawing speed
The following cutting speeds are po ssible:
HU 250 CS > speed in position 1: 40 m/min.
in position 2: 80m/min
Every material has it’s own cutting speed. Below advice for some materials:
20 m/min > For steel alloy e.g. stainless steel
40 m/min > For normal steel
80 m/min > For non-ferrous materials
5.7 Clamping the material
It is of the utmost importance that the material is safely clamped in the double material
vice, so that it cannot tilt over or even move during sawing. In ord er to work efficiently,
the material must always be clamped in such a way that the contact surface of the saw
and the material is as small as possible. For instance, saw flat material on its thinnest
side; this will considerable shorten sawing times. When very short pieces have to be
sawn, and consequently only half of the material vice
will be used, in order to prevent it from pulling out of
alingment, a piece of material of equal thickness must
be clamped in the other half of the vice. In this way the
material is clamped tightly and evenly. Application of
special vice jaws is recommendable for
repetitive work
The sawing depth can be limited by means of an
adjustable ring, see chapter 4.2
Mitre-sawing
Pull the clamping rod (fig. 5.06B) to the right and turn the sawing unit in the required mitre
position. The position can be read out on the scale division (fig 5.06A). Then fasten the
clamping rod again. Do not use unnecessary force, a slight pull will su ffice. Before clamping
the material, check whether the saw is running completely clear between the jaws of the
material vice. Place the steel vice jaws as closely as possible to the saw.
Material Clearance angle Rake angle
Steel 822°
Stainless steel 615°
Non-ferrous 12 25°

8
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
5.6.
sawing speed
The following cutting speeds are possible:
• speed in position 1: 40 m/min.
• in pos ition 2: 80m/min
Every material has it’s own cutting speed. Below advice for some materials:
20 m/min > For steel alloy e.g. stainless steel
40 m/min > For normal steel
80 m/min > For non-ferrous materials
5.7.
clamping THe maTerial
It is of the utmost importance that the material is safely clamped
in the double material vice, so that it cannot tilt over or even move
during sawing. In ord er to work efficiently, the material must always
be clamped in such a way that the contact surface of the saw and
the material is as small as possible. For instance, saw flat material on
its thinnest side; this will considerable shorten sawing times. When
very short pieces have to be sawn, and consequently only half of the
material vice will be used, in order to prevent it from pulling out of
alingment, a piece of material of equal thickness must be clamped in
the other half of the vice. In this way the material is clamped tightly
and evenly. Application of special vice jaws is recommendable for
repetitive work
The sawing depth can be limited by means of an adjustable ring, see
chapter 4.2
5.8.
miTre-sawing
Pull the clamping rod (fig. 5.06B) to the right and turn the sawing unit in the required mitre position. The position
can be read out on the scale division (fig 5.06A). Then fasten the clamping rod again. Do not use unnecessary
force, a slight pull will su ffice. Before clamping the material, check whether the saw is running completely clear
between the jaws of the material vice. Place the steel vice jaws as closely as possible to the saw.
5.9.
cooling
Cooling is of great importance to the life of the saw blade. After thorough investigation it has been established
that the emulsifiable coolant absolutely prevents - among other things - the forming of so-called built-ups (the
fusing of cut material to the tooth point flanks). This will prevent a jolting saw, which results in damage and
breakage. Oils forms a lubricating film on the saw tooth points, so that, in case of increased saw feed, the high
pressure between chip and tooth (chip surface of the saw to oth) will not lead to overheating of the saw. Here it is
important that a correctly directed stream at the cutting edges of the saw ensures an ample supply of coolant for
the removal of chips and the elimination of frictional heat.
5.10.
sTarT/sTop
• Make sure the material has been fed.
• Check the sight-glass to see whether there is sufficient oil in the saw head. If necessary top up with BP GRXP
680 (ISO) through the vent hole in the handle.
• Check the depth setting of the saw blade.
• Check whether the vice jaws are suited for this material.
• Adjust the material vice to the material.
• Switch on the machine with the main switch.
• Select the required speed.
• Open the coolant cock on the safety guard (not in case of atomized lubrication).
• Start machine with the switch on the pulling rod.
8
5.5 Saw feed
Manual saw feed The saw feed is determined by
hand. The saw is lowered onto the material by means
of the handle. Press the saw b lade firmly onto the
material, without using unnecessary force. When the
saw pressure is too high this can cause the saw to
break; when the saw pressure is too low, te saw will
rapidly go blunt.
5.6 Sawing speed
The following cutting speeds are po ssible:
HU 250 CS > speed in position 1: 40 m/min.
in position 2: 80m/min
Every material has it’s own cutting speed. Below advice for some materials:
20 m/min > For steel alloy e.g. stainless steel
40 m/min > For normal steel
80 m/min > For non-ferrous materials
5.7 Clamping the material
It is of the utmost importance that the material is safely clamped in the double material
vice, so that it cannot tilt over or even move during sawing. In ord er to work efficiently,
the material must always be clamped in such a way that the contact surface of the saw
and the material is as small as possible. For instance, saw flat material on its thinnest
side; this will considerable shorten sawing times. When very short pieces have to be
sawn, and consequently only half of the material vice
will be used, in order to prevent it from pulling out of
alingment, a piece of material of equal thickness must
be clamped in the other half of the vice. In this way the
material is clamped tightly and evenly. Application of
special vice jaws is recommendable for
repetitive work
The sawing depth can be limited by means of an
adjustable ring, see chapter 4.2
Mitre-sawing
Pull the clamping rod (fig. 5.06B) to the right and turn the sawing unit in the required mitre
position. The position can be read out on the scale division (fig 5.06A). Then fasten the
clamping rod again. Do not use unnecessary force, a slight pull will su ffice. Before clamping
the material, check whether the saw is running completely clear between the jaws of the
material vice. Place the steel vice jaws as closely as possible to the saw.

9
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
6.
mainTenance
6.1.
general
Clean the machine after it has been used and provide rust protection by applying a protective oil. Regularly
remove the chips which gather underneath the vice jaws. In doing so use a thin, flat brush and NEVER an air jet.
The gears, the worm and the worm gear are subject to wear. The moment the replacement of these parts is due,
depends on the usage. You can order a complete set, including instructions for disassembly and assembly from
your dealer. This kit is available from stock.
Regularly clean the coolant tank. This will considerable lengthen the life of the pump.
• Check the condition of the oil filter in the cooling circuit . If the filter is severely polluted, it needs to be
cleaned or replaced.
• Check the oil level in the saw head every week.
• Check the oil level of the saw feed tank and refill if necessary (see chapter 6.3).
• Check the oil bowl and the water separator every day. Refill the oil
bowl with BP HLP 15 or a type of the same quality.
• Remove the water from the water separator of the air unit. With the PK-
versions the glass can be screwed off.
6.2.
lubricaTion
The gear box with the gear parts must be rinsed clean at least once per
six months, depending on the use of the machine. Loosen the plug at the
bottom of the saw head and drain the oil. Rinse the unit with petroleum
and drain it thoroughly. Fill the unit with BP GRXP 680 (ISO) with 1.1 litre.
Check the oil level on the sight -glass. If the saw head gets too hot while
used continuously, the oi l level in the saw head may be too high.
Once every three months the grease nipples of the pivots of the saw head
must be greased with a universal grease.
The 315 and 350-version has one grease nipple (fig. 6.03).
The threaded spindle, the guide rods of the material vice and the guides of the machine bed must be oiled
regularly. Use BP SHF 15 for this purpose.
6.3.
grinding THe sawblades
It is only possible to work efficiently with a circular sawing machine when the saw blade is reground in time.
When the saw has lost its cutting ability, do not try to continue sawing by pulling the handle harder, for this can
cause teeth to break and the cost of regrinding doubled.
Regrinding should only be done on special machines, constructed for this kind of work. Besides that it is
advisable to check the saw optically in your own factory after they have been reground. In these optical checks
special a ttention must be paid to the rake angle and the clearance angle.
7.
Trouble sHooTing
Trouble Possible cause Remedy
Excessive bouncing or
breaking of the saw
1. Speed an/or saw feed too high.
2. Teeth blunt, tooth cavities too small.
3. Wrong coolant
4. Saw jolts because chipsremain in the
saw cavity (cold-welding on the saw).
5. Saw installed incorrectly with respect
to the direction of rotation.
6. Worm and worm wheelworn out.
Use Bewo Oil S
Have the saw ground and the tooth
cavity polished, so that the chips can
easily slide through the toothcavity. Turn
the saw and check the teeth.
Replace.
Motor does not turn 1. Motor incorrectly connected.
2. Relays or motor defective.
3. Selector switch is in the OFF position
4. Thermal protection of motor defective
5. Fuses blown
6. Emergency stop button depressed
Cooling system does
notwork
1. Cock on saw guard inclosed position.
2. Pump incorrectly connected.
3. Pump defective
4. Cooling tank empty
5. Suction pipe of cooling pump
obstructed.
Fig. 6.03
10
6.2 Lubrication
The gear box with the gear parts must be rinsed clean at least once per six months,
depending on the use of the machine. Loosen the plug at the bottom of the saw
head and drain the oil. Rinse the unit with petroleum and drain it thoroughly. Fill the
unit with BP GRXP 680 (ISO) with 1.1 litre. Check the oil level on the sight -glass.
If the saw head gets too hot while used continuously, the oi l level in the saw head
may be too high.
Once every three months the grease nipples of the pivots of
the saw head must be greased with a universal grease.
The 315 and 350-version has one grease nipple (fig. 6.03).
The threaded spindle, the guide rods o f the material vice and
the guides of the machine bed must be oiled regularly. Use
BP SHF 15 for this purpose.
6.3 Grinding the sawblades
It is only possible to work efficiently with a circular sawing machine when the saw
blade is reground in time. When the saw has lost its cutting ability, do not try to
continue sawing by pulling the handle harder, for this can cause teeth to break
and the cost of regrinding doubled.
Regrinding should only be done on special machines, constructed for this kind of
work. Besides that it is advisable to check the saw optically in your own factory after
they have been reground. In these optical checks special a ttention must be paid to
the rake angle and the clearance angle.
Fig. 6.03

10
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
8.
survey of available saw blades
Saw blades HSS DMO5, steam passivated
Material Dim. (mm) Pitch
Steel 250x2x32 3/240 teeth
250x2x32 4/200 teeth
250x2x32 5/160 teeth
250x2x32 6/128 teeth
250x2x32 8/100 teeth
250x2x32 10/72 teeth
250x2x32 12/60 teeth
Stainless steel 250x2x32 3/240 teeth
250x2x32 4/200 teeth
250x2x32 5/160 teeth
250x2x32 6/128 teeth
250x2x32 8/100 teeth
250x2x32 10/72 teeth
250x2x32 12/60 teeth
Available on request:
Special saw blades for aluminium, brass and copper

11
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
9.
coolanT sysTem
13

Coolant drawing
Pos.nr.
Description
Q,ty
Pos.nr.
Description
Q,ty
101
Pedestal
1
110
Sticker Bewo general
1
102
cover
1
111
Pump set 230/400V 50
HZ
1
103
Support pump
1
112
1
104
Screw M6x12
4
113
Screw M6x25
4
105
Spring washer 6
4
110
Sticker Bewo general
1
106
Screw M10x100
2
107
Screw M8x16
8
*) Pump set contents:
108
Spring washer 8
8
111 A
Pump
1
109
Sticker electro
1
111 B
Hose 2 m
1
Pos.no. Description Q,ty Pos.no. Description Q,ty
101 Pedestal 1110 Sticker bewo general 1
102 Cover 1111 Pump set * 230/400v 50 Hz 1
103 Support pump 1112 1
104 Screw m6x12 4113 Screw m6x25 4
105 Spring washer 6 4110 Sticker bewo general 1
106 Screw m10x100 2
107 Screw m8x16 8 * Pump set contents:
108 Spring washer 8 8Pump 1
109 Sticker electro 1Hose 2 m 1

12
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
10.
parTs drawing for Hu250cs
14
Parts drawing for HU250CS

13
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
10.1.
parTs lisT for Hu 250cs
No.. Description Model Q’TY No.. Description Model Q’TY
1Socket screw M8X20 2 37 Socket screw M10X30 2
2Pulling arm 1 38 Socket screw M10X16 2
3Socket screw M6X16 1 39 Vice table 1
4Spring ring 60 1 40 Threaded shaft 1
5Safety guard 1 41 Guiding shaft 2
6Socket screw M6X25 2 42 Vice plate 2
7Washer 6 2 43 Vice jaw at the front 1
8Connecting pipe 1 44 Ring 10 6
9Safety guard 1 45 Hex socket screw M10X40 4
10 Hex screw M12X25 1 46 Handle 3
11 Press cover 1 47 Handle sleeves 3
12 Pin 2 48 Handle wheel 1
13 Blade 1 49 Nut M20X2 1
14 Shaft 1 50 Press cover 1
15 Gear 1 51 Hex socket screw M8X16 2
16 Ring 1 52 Eccentricity bush 1
17 Hex socket screw M12X25 1 53 Eccentricity shaft 1
18 Nut M10X55 1 54 Bolt M10X30 2
19 Nut M10 8 55 Lock pin M6X12 2
20 Motor 4 56 Spring 1
21 Lock nut M8 4 57 Bolt M10X35 2
22 Bolt 1 58 Mat 1
23 Sealing ring 1 59 Socket screw M10X100 2
24 Worm shaft 1 60 Pulling arm 1
25 Nut M16 1 61 Spring pin 6X20 1
26 Bearing 1 62 Swivel arm 1
27 Gear housing 1 63 Seats 1
28 Nut M20 1 64 Couping rod 1
29 Handle pole 1 65 Module 1
30 Socket screw M5X10 2 66 Eccentric disk 1
31 Switch knob 1 67 Lock handle 1
32 Bolt M20X1.5 1 68 Handle sleeve 1
33 O-ring 1 69 Nut M8 3
34 Vice base 2 70 Socket screw M8X45 3
35 Vice plate 1 71 Stand 1
36 Block 1 72 Socket screw M6X40 4

14
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
Electro box Quantity per machine
Pos.no. Description Art.no.
670 Switch box 60.0579 1
671 Cover 50.0955 1
672 Sealing tape 21.9950 1
673 Screw M4x10 44.1000 4
674 Screw M5x12 44.1583 4
675 Spring washer 44.2451 4
677 Motor switch contactor (Dahlander switch) 46.0902 1
678 Earth bolt 46.6350 1
682 Sticker 48.3700 1
16
  










ELECTRO BOX
Quantity per
machine
Pos.nr.
Description
Art.nr.
HU 250CS
670
Switch box
60.0579
1
671
Cover
50.0955
1
672
Sealing tape
21.9950
1
673
Screw M4x10
44.1000
4
674
Screw M5x12
44.1583
4
675
Spring washer
44.2451
4
677
Motor switch contactor (Dahlander switch)
46.0902
1
678
Earth bolt
46.6350
1
682
Sticker
48.3700
1
670682672671677676
673
678674
675

15
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
17

16
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
Our products are frequently updated and improved. Minor changes may not yet be incorporated in this manual.
Always state the year of build, type and serial number of the machine in correspondence.
Manufacturer and importer assume no responsibility for defects which result from not reading the manual
carefully or wrong use of the machine. No rights can be derived from this manual.
All rights reserved. No part of this booklet may be reproduced in any form, by print, photoprint, microfilm or any
other means without written permission from the publisher.
© Huberts bv, Kennedylaan 14, Veghel, the Netherlands. Internet: www.huvema.nl

17
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
CE DECLARATION OF CONFORMITY
(in accordance with supplement II A of the Machinery Directive)
Industrie & Handelsonderneming Huberts bv, Kennedylaan 14, 5466 AA Veghel, the Netherlands, in the capacity
of importer, is to be held responsible for declaring that the Huvema machine:
Cutting off saw HU 250 CS
which this declaration relates to, is conform the following norms:
NEN-EN-ISO 12100:2010, NEN-EN-IEC 60204-1:2006/C11:2010, NEN-EN-IEC 61000-6-1:2007,
NEN-EN IEC 61000-6-3:2007/A1:2011/C11:2012, NEN-EN 13898:2003+A1:2009/C1:2010
as described in:
• Machinery Directive: 2006/42/EC
• Low Voltage Directive: 2006/95/EC
• Electromagnetic Compatibility Directive: 2004/108/EC
Veghel, the Netherlands, March 2014
L. Verberkt
Managing director

18
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED

19
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED

20
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED