RASOR GRT12SX User manual

USE MANUAL
GRT12SXGRT12SX THREE-PHASE
CUTTING UNIT

2
EN
THE COMPANY
ACKNOWLEDGMENTS
Dear Customer,
thank you for choosing a Rasor®Elettromeccanica S.r.l. product.
Rasor®has been a reference point in the field of cutting systems in the textile, clothing,
furniture, tailoring, sport, chemical, automotive, nautical and insulating material sectors for
years. Its production has been always synonymous with reliability attested by many of
satisfied customers.
Rasor®quality system supervises all the company activities in order to provide the Customer
with a service that meets its needs and expectations in terms of product quality, delivery
reliability and stock of finished products.
All the parts of the devices have been planned and produced to guarantee an optimum
performance. In order to keep the high quality level and the long reliabilty of the Rasor®
products, it is recommended to use only original spare parts and to contact the head
office for any maintenance work.
Rasor®Elettromeccanica S.r.l. was established in Milan in 1946 by the two promoting partners
Spinelli and Ciminaghi. For more than sixty years it has been producing automatic cutting
systems, cutting units for textile applications and electric and pneumatic cutters.
Initially considered as a point of reference for cutting systems in the
textile applications, the Rasor®products are nowadays widely used in
other fields: chemical, automotive, nautical and sport sectors and in
furniture manufacturing.
Rasor®can rely on the professional continuity of three generations,
thanks to the precious support of the promoting partner, to his passion, dedication and
great experience of seventy years.
The main characteristic of Rasor®is that each working phase, starting from the manufacturing
of the product up to its packing and delivery is carried out in Rasor®premises by qualified
operators who have professionaly grown up following the spirit of the company and of its
founders. This ensures the high quality which Rasor® has always considered as essential
since the beginning of its activity.
Following the innovative spirit mentioned above, our company is constantly focused on the
improvement of the product quality, on the study and development of new materials and
technologies.

EN
3
1. GENERAL SAFETY RULES
This manual is an integral part of cutting unit GRT12SX and must be carefully
read before using it since it gives important indications with regards to its safe
installation, use and maintenance. Keep it with care.
Before using cutting unit GRT12SX, read carefully the following general safety
rules.
• PACKAGING.
After taking off the packaging make sure that the cutting unit is intact. In
case of doubt do not use it and contact an authorized service centre. Do not
leave pieces of packaging (plastic bags, foam polystyrene, cardboard, etc.)
within the reach of children or disabled persons since they are potential sources
of danger.
• AVOID DANGEROUS ENVIRONMENTS.
Prevent the cutting unit GRT12SX components from coming in contact with
damp or wet surfaces.
• KEEP CHILDREN AWAY.
Unauthorized persons, in particular children, must be kept away from the
working area.
•FEEDCABLE.
Prevent the feed cable from coming in contact with hot objects, pointed
surfaces or sharp edges. Never pull the feed cable of the machine. It must
never be replaced by the user. If necessary contact professionally qualified
staff.
• KEEP THE WORKING AREA ALWAYS IN ORDER.
The workplace must always be kept in order and well lightened; liquids or oil
traces must not be present.
• ALWAYS USE CUTTING UNITS GRT12SX PROPERLY.
Use the cutting units only to carry out the works they have been designed
for; do not use them improperly.
• OBSERVE THE USE OF THE TOOLS.
Do not cut excessively thick materials and always check blade conditions.
• AVOID ACCIDENTAL STARTINGS.
Before connecting cutting unit GRT12SX, make sure that everything is installed
properly.
• CLOTHING.
Do not use large clothes or accessories that might get stuck in the moving
parts.
• GOGGLES AND PROTECTIVE METAL MESH GLOVES.
Always use goggles, protective metal mesh gloves approved by Rasor®during
use and maintenance operations (according to UNI EN 388:2004 standard).
• SPARE PARTS.
During maintenance and replacement operations use only original spare parts.
Blade maintenance must be only performed by Rasor®technicians.
• INSTALLATION.
Any installation that is not in conformity with these
specifications could jeopardize your safety and cancels the
warranty.

4
EN
ALL RIGHTS ARE RESERVED ACCORDING TO THE
INTERNATIONAL COPYRIGHT CONVENTIONS,
The reproduction of any part of this manual, in any form, is forbidden without
the prior written authorization of Rasor®Elettromeccanica S.r.l.
The content of this guide can be modified without prior notice. Great care has
been taken in collecting and checking the documentation contained in this
manual to make it as complete and comprehensible as possible.
Nothing contained in this manual can be considered as a warranty, either
expressed or implied - including, not in a restrictive way, the suitability warranty
for any special purpose. Nothing contained in this manual can be interpreted as a
modification or confirmation of the terms of any purchase contract.
Rasor®Elettromeccanica S.r.l. machines have not been conceived to work in areas at risk of
explosions and at high risk of fire and they cannot cut wet or damp materials. Moreover, they
cannot work in case of rain.
In case of damage or malfunction, cutting unit GRT12SX must not be used until the Customer
Care Technical Service has repaired them.
The original configuration of the cutting unit must not be changed at all.
On receiving the machine make sure the supply corresponds to what has been ordered.
In case of non-compliance immediately inform Rasor®.
Also make sure the cutting unit has not been damaged during transport.
Customer Care Technical Service
WARNING
The installer and the maintenance man must know the content of this manual. Although
the main features of the machine described in this manual are not subject to change,
Rasor®Elettromeccanica S.r.l. reserves the right to modify the components, details
and accessories it deems necessary to improve the machine or to meet manufacturing
or commercial requirements at any time and without being obliged to update this
manual immediately.
Informative letter
WARNING
For any information, please contact
® ELETTROMECCANICA S.r.l.
Via V. Caldesi, 6; 20161, MILANO (MI) - ITALY
Tel: [phone]; Fax: [phone]
e-mail: [email protected]
web: www.rasor-cutters.com
RASOR

EN
5
2. TRANSPORT AND PACKING
The cutting unit is delivered in a cardboard box, inside which there are various optionals. The
code of the ordered product and its serial number are indicated outside the package (see
picture 1). The following accessories are contained in a bag inside the package:
1) Poligonal blade;
2) Butterfly wrench for blade nut disassembly;
3) Drift for blade disassembly.
3. PLATE DATA
The manufacturer's identification and EC STANDARD 2006/42/EC conformity plate (see picture
below) is located on the front part of the cutting unit.
The plate must not be removed at all, even if the machine is resold. Always refer to
the serial number written on the plate itself when contacting the manufacturer.
Several safety warnings are printed on a card which is applied to the cutting unit feeding
cable; such warnings must be strictly followed by everyone dealing with the machine. The
company is not to be held responsible for damage to property or accidents to
people which might occur if the above-mentioned warnings are not observed. In
such a case, the operator is the only person responsible.
READ
THE
INSTRUCTION
MANUAL
DO NOT
REMOVE
THE SAFETY
DEVICES
HIGH
VOLTAGE
SHEARING
RISK
USE
METAL
GLOVES
USE
GOGGLES
1
Serial number
Year of production
Model
Electric data
2
2
1
3
180
M
0,52
400 2___
GRT12SX

6
EN
4. PRODUCT DESCRIPTION
The fixture described in this manual is a cutting unit model GRT12SX which can be assembled
on automatic machines (e.g. spreaders, computerized cutting, etc.) by means of proper
holes located in the motor support.
GRT12SX can operate continuously and it can cut at various heights by means of multiple
installation.
By cutting with the blade and the counterblade always in contact and thanks to the steel
upper quality of the blade supplied, GRT12SX guarantees the clean separation without
frayings of the two borders of the cut material. The three-phase motor with extremely
compact dimensions and extreme reliability with 120 mm diameter blades, guarantees cuts
with thickness up to 5 cm. A sharpener assembled on the cutting unit head allows sharpening
the blade at any moment without disassembling it. After carrying out this operation, it is
possible to start cutting again. A high power motor, perfectly balanced, with a high number
of revolutions and totally free of maintenance, reduces the vibrations to the minimum, thus
making the cutting unit complies with European Directive No. 2002/44/EC concerning the
risks deriving from mechanical vibrations.The mechanical parts are made of high resistance steel,
bronze and aluminium and require lubrication after several working hours.
1
2
3
4
6
7
8
11
12
10
9
5
1 Connector block 7 A lumin ium b ase covered w it h
Teflon
®
®
2Motorcover8Poligonalblade
3 Cable gland 9 Spring locking the thread
4Motorframe10 Greaser
5 Sharpening button 11 Hard metal counterblade
6 Movable front protection 12 Motor flange with assembly holes
Device components

EN
7
7. FIELD OF APPLICATION
6. NOISE LEVEL
NOTE
It is advisable for cutting unit GRT12SX owners to verify the compliance with the local law
concerning safety at work.
The maximum acoustic pressure level emitted by cutting unit GRT12SX is about 60 dB (A).
Noise tests have been carried out in compliance with Standard UNI EN ISO 11202. The
device noise levels, measured at different distances (without any sound wave filtering system),
vary in the extent of few db (A).
Cutting unit GRT12SX has been designed, manufactured and assembled to cut any kind of
fabrics or materials, with the exception of metal, plastic or wood, by means of rotary poligonal
blades. This equipment must not work:
- in areas prone to explosions;
- in presence of fine dust or corrosive gases;
- on wet or damp materials;
- to cut plastic, metal and wooden materials.
It is forbidden to use cutting unit GRT12SX for purposes different from the above-
mentioned ones since it can be dangerous.
5. TECHNICAL FEATURES
These technical data are only indicative and may be subject to change without notice.
8 side blade Ø 120 mm, in H.S.S. Steel
12 side blade Ø 120 mm, in H.S.S. Steel
Circular blade Ø 120 mm, in H.S.S. Steel
8 side blade Ø 120 mm, in H.S.S. Steel
covered with TIN
12 side blade Ø 120 mm, in H.S.S. Steel
covered with TIN
8 side blade Ø 120 mm, in integral hard
metal
8 side blade Ø 120 mm, in H.S.S. Steel
covered with Teflon®
12SHSST F
Features of the available blades
12SHSS
12CHSS
12SMD
12DH SST N
12SHSST N
12DHSS
120 mm with hard metal
counterblade
400 rev./min
about 50 mm
Three-phase-Asynchronous, 180 W
(
IP65-CL F
)
0,52 A
4590 g
5500 g
1,5 mt
LUX 200
< 2,5 m/s2
0 ~ 55°C
10 ~ 95% without condensate
Cutting working depth
Motor power
Weight (with feeding cable)
GRT12SX cutting unit features
Blade diameter
Blade speed
Max. absorption
Working temperature
Working humidity
Total weight (with package)
Electric cable length
Minimum light for working
operations
Vibrations at the start up

8
EN
8. USE WARNINGS
We recommend following the indications below in order to always work in safety conditions.
•All the operations must be carried out complying strictly with the safety rules of the
country where the device is to be installed.
•It is STRICTLY FORBIDDEN to smoke during the installation or adjustment operations of
the cutting unit.
•The Customer undertakes to comply with and make his staff observe all the rules and
regulations in force concerning safety, prevention of accidents and health in the work
place. Therefore, the Customer assumes the responsibility to strictly follow all the rules and
regulations in force, as well as the special provisions in force in sport and public installations
the Customer declares to know after receiving all the relative necessary information.
•The cutting unit works also without its safety protective device. This protective
device must NEVER be removed.
•Always check the resistance of the material to be cut and the kind of blade which is being used.
•The Customer shall equip his own personnel with all the individual safety protections for
the execution of the works, as well as with the ones which might be prescribed by the
Manufacturer due to specific danger conditions of the plant or of the area where the
personnel must work.
•Do not make any adjustment while the blade is working or while the electric plug is
connected.
•Always pay attention to the electric cable position to prevent it from being cut or damaged
by the blade.
•It is allowed to assemble cutting unit GRT12SX on machines O.E.M. on condition that their
original structure is not modified. Otherwise, the intervention must be certified by Rasor®.
Firstly make sure that the lines are able to feed the cutting unit correctly, in
compliance with the safety rules (for the features required see par. 5).
We suggest installing a magnetothermic safety device before the cutting unit and check
that the ground circuit is effective. Before working on the feeding cables pull the plug out.
Check that electric connections and protections correspond to the driving force and the
plate data values (voltage and current), required by the different electric circuits. By referring
to the CEI 11-27/1 standard all the works carried out by means of electric current must be
performed by a staff, who has been provided with all the devices required by the above-
mentioned standard. For the works carried out under voltage, it is necessary that the
employer certifies the suitability, against formative processes.
The cutting unit GRT12SX is supplied with electric cable
connected to the connector block located beside the motor
.
The user must connect the cutting unit to the mains (the
cable complies with the CEI 20-22 III Standard). Never change
the length of the cable supplied. If it is necessary, use a longer
cable and replace the one supplied. To connect the new cable
open the cover “A” by unscrewing the 4 cross-slotted screws
“B” (see picture 3). Connect the phase cable to the terminal
board. The minimum section of the connecting cables must be
determined by the operator in charge of the installation.We
recommend to use safety cables and socket IMQ approved.
Check the connection by enabling the cutting unit and verify
the rotation direction. The cutting unit is provided with earthing
WARNING
3
9. ELECTRIC CONNECTION
B
A
B

EN
9
10. RESIDUAL RISKS
11. INSTALLATION AND USE
Even though the cutting unit is safe, operators must pay attention to preserve their and
other people’s safety.


At the end of the working operations, the motor could be very hot.

The cutting blade can work even when the protective device is disassembled.
To install and use the cutting unit manually, proceed as follows:
1) Fix the cutting unit on level squares or angles by means of four 5MA screws, by inserting
them in the eight holes located in the motor lower cover (see pictures 4 and 5).
NOTE
The cutting unit can be installed in any position/angle: vertically, laterally and it can be turned
upside down. It is not compulsory for the aluminium base to touch the machine table.
2) Lay the material to be cut;
3) Connect the cutting unit to the electric feeding;
4) Put the material on the cutting foot;
5) Adjust the front mobile protection according to the thickness of the material to be cut (see
picture 6);
6) Carry out the cutting operation.
NOTE
Cutting unit GRT12SX can work in a fixed position (the material has to be moved) or it can
move forward while the material is kept in the same position. Make sure the material to be
cut is properly stretched, preventing it from curling.
4
WARNING
Never use the two bolts which fix the motor to the cutting part to fasten cutting
unit GRT12SX. This operation may cause the motor shaft to break. In this case,
warranty is not valid.
5
(yellow-green cable). Possible faulty earthing connections may cause unsafe working
conditions. Possible damages are not at RASOR®s.r.l. charge.
The electric feeding must be supplied by a line protected against overcurrent by means of
the automatic switch (magnetothermal) or delayed fuses with a suitable dimensions. The
current of the safety devices must be as low as possible considering the max. absorption of
the machine (see identification plate).
6
WARNING
The operator must arrange a disconnetting switch on the supply line in order to switch off
the machine, if necessary.

10
EN
13. LUBRICATION
Every 3-4 working days it is necessary to lubricate the
pair of gears. To carry out this operation, remove the
protective plug “A” located on the motor support of the
cutting unit and fill it with lubricating grease Rasor.
Screw plug “A” again a few turns. Screw plug “A” a few
turns every 2-3 working days (see picture 9).
The blade must never be dirty with grase or oil.
9
WARNING
A
12. BLADE SHARPENING
After many hours of a continuative use of the cutting
unit, or if it would not be able to cut anymore, it is
necessary to sharpen the blade.
To carry out this operation, start the blade and press
sharpener “2” located on it for 3-4 seconds (by pressing
push button “1”, as shown in picture 7).
Repeat the operation 2-3 times.
If the sharpening operation is not effective, check
the wear of emery grinding wheel “3” (see picture 8).
If emery grinding wheel “3” is too worn or dirty, replace
it.
1
2
8
3
7

EN
11
14. BLADE REPLACEMENT
If the blade is no more able to cut (even after repeating
the sharpening operation several times) it is necessary
to replace it. To carry out this operation, use butterfly
wrench “1” and drift “3” locking the blade (shown in
picture 10).
To replace the blade, proceed as follows:
1) Use some protective gloves in compliance with
local law concerning safety at work.
2) Remove the mobile front safety protection “B”
(see picture 11) by unscrewing pin “C” and
removing washer “D” as shown in picture 12.
Remove the fixed rear safety protection “A” (see
picture 11) by unscrewing the two cross screws
“E” by means of a screwdriver (not supplied by
the manufacturer) as shown in picture 13.
3) Insert drift “3” (see picture 10) into hole “F” (see
picture 13), so as to lock the blade (the hole on
the blade must correspond to the one on the
structure).
4) Use butterfly wrench “1” to unscrew nut “G” and
remove blade “H” (see picture 13).
5) Replace the worn blade with the new one “2”,
being careful to center the blade on the shaft, in
the correct position, and remember to assemble
it, so that the Rasor writing can be seen by the
operator.
6) Assemble all the components again and carry out
the sharpening.
1
10
11
A
B
3
2
12
13
D
C
E
F
G1
H

12
EN
16. SPARE PARTS/EXPLODED VIEW
15. TROUBLESHOOTING


SOLUTION
Check the distance between the blade and the counterblade
Check the kind of material
Sharpen the blade
Check the material thickness
Check the compatibility between blade and material
Make sure that the motor turns correctly
Reduce the feeding speed
Check the counterblade integrity
Carry out the lubrication
Disassemble the blade and remove the material residues
Check the wear of the pair of gears
Check the electric connections on the O.E.M. unit
Check the electric connections
Check the feeding cable
The cutting unit starts slowly, works
intermittently or it does not start

PROBLEM
The cutting unit is noisy
The material is not cut or it gets stuck
between
the blade and the counterblade
CODE DESCRIPTION CODE DESCRIPTION CODE DESCRIPTION CODE DESCRIPTION
12SHSS 8 SIDE BLADE Ø 120 mm, IN H.S.S.
STEEL GRT12M28 COMPENSATION RING SW121600 MOTOR BEARING L12 SW127502 WASHER
GMT1200 COMPLETE MOTOR GRT12, 3-ph 380
V 50 Hz GRT 12M29 FA S T ENING NUT SW124101 REAR GUARD FIXING SCREW 3x10 MA
FISS. SW127600 CLOSING CAP
GMT12480 COMPLETE MOTOR GRT12, 3-ph 480
V 60 Hz GRT27 FLAME RETARDANT FEEDING CABLE SW1241S LEFT REAR PROTECTION GUARD SW127801 PLATFORM SECTOR
GMT1260 COMPLETE MOTOR GRT12, 3-ph 380
V 60 Hz GRT8615 SPACER SW1244S LEFT FRONT PROTECTION GUARD SW128600 MEDIUM GRAIN EMERY Ø 30x10x6
GRT121300 COMPLETE ROTOR GRT8616 DOWEL FASTENING THE FAN SW1244SCPL LEFT FRONT PROTECTION SET SW1286CPL COMPLETE EMERY UNIT
GRT121801 WORM SCREW series >2001 SW1076S SPRING W ITH DOWEL SW1249S LEFT SPRING LOCKING THE THREAD T 101801 ELASTIC PIN
GRT121801C
PL
COMPLETE PAIR OF GEARS series
>2001 SW107900 SCREW FOR THE COUNTERBLADE HOLDE R FIXING SW125501S COMPLETE LEFT MOTOR SUPPORT T 104700 GREASER CAP
GRT126201 BEVEL GEAR series>2001 SW1080S LEFT COUNTERBLADE HOLDER SW125600 SUBBLADE RING T 104800 GREAS ER
GRT12M17 MOTOR FRAME FIXING SCREW SW1081S LEFT HARD METAL COUNTERBLADE SW126101 BLADE GUIDE PIN series> 2001 T 105000 SCREW 2.6MA TO FIX THE SPRING
LOCKING T HE THREAD
GRT12M18 MOTOR COVER SW108200 COUNTERBLADE FIXING SCREW SW126102 REFERENCE PIN T 105200 MOTOR S UPPORT FIXING BOLT
GRT12M19 MOTOR FAN SW108700 SHARPENER PIN SW126103 GEAR RING FIXING SCREWS 2,5MA T 105300 WAS HER
GRT12M21 UPPER MOTOR COVER SW108800 EMERY SPRING Ø 11 mm SW126300 BLADE FIXING RING NUT T 105400 ANTI-FRIC TION BUSH
GRT12M22 MOTOR COVER FIXING SCREW SW108900 SHARPENER BUSH SW127201 BEA RING R6 GEARS series> 2001 T 107000 SCREW FOR THE
PLATFORM/BASE/SECTOR FIXING
GRT12M24 COMPLETE MOTOR F RAME S W109000 EMERY S PRING Ø 6 mm SW1274MS LEFT BA SE WITH BEVEL m m
130x50x10 T 107500 BLADE ASSEMBLING/ DISASSEMBLING WRENCH
GRT12M25 COMPLETE TERMINAL BOARD SW109100 S HARPENER CAP WITH BEARING SW1274MSC
PL
COMPLETE LEFT BASE WITH BEVEL
mm 130x50x10 T 107600 DRIFT LOCKING THE BLADE
GRT12M26 LOWER MOTOR FLANGE SW109200 SCREW FOR THE SHARPENER CAP
FIXING S W 127500 GEAR BEA RING A DJUS T ING DEVICE T 107900 LUBRICA T ING GREASE
GRT12M27 UPPER MOTOR BEARING SW109300 WASHER SW127501 ADGUSTING DEVICE FIXING DOWEL T 864500 SCREW FOR THE FRONT GUARD
FIXING
T 864600 WASHER

SW1249S
T 105000
T864500
SW1244S
T864600
SW1076S
SW1274MS
SW1081S
SW1080S
SW108200
SW127801
SW107900
GRT126201
SW 1274MSCPL
12SHSS
SW126300
SW1241S
SW
124101
SW 125501S
GRT121801
GRT126201
GRT121801CPL
SW1286CPL
SW128600
T101801
dal 1946
®
SW126102
SW127201
SW126103
SW126101
T105400
SW125600
SW127502
SW127201
SW127500
SW127600
SW127501
T105300
T105200
SW109200
SW108700 SW109100
SW108900
SW108800
SW109000
SW109300
T104700
T104800
T107000
GRT27
SW121600
GRT12M19
T107600
T107500
T107900
GRT12M22
GRT12M18
GRT8616
GRT8615
GRT12M17
GRT12M21
GRT12M28
GRT12M26
GRT12M29
GRT12M25
GRT12M24
GRT121300
GRT12M27
SW1244SCPL
GMT1200 (3-PH, 380V, 50Hz) GMT1260 (3-PH, 380V, 60Hz) GMT12480 (3-PH, 480V, 60Hz)

WARRANTY
Rasor®Elettromeccanica S.r.l. cutting unit has a 12 month warranty from the date indicated
on the last page of this manual, except in case of different written agreements.
The warranty covers all manufacturing and material defects. Replacement and repair operations
are covered only if carried out by our company and at our workshop. If in-warranty goods
need to be repaired, the customer must always send the complete machine to Rasor®.
Single units will not be repaired under warranty.
The material to be repaired must be sent CARRIAGE FREE.
Once the machine has been repaired, it will be sent CARRIAGE FORWARD to the customer.
The warranty covers neither technicians' intervention on site nor the machine disassembly
from the installation place.
If for practical reasons, one of our technicians is sent to the premises, the customer will be
charged the costs plus the travelling expenses.
The warranty does not include:
failure caused by wrong use or assembly,
failure caused by external agents,
failure caused by lack of maintenance or neglicence;
blades and parts subject to wear.
WARRANTY FORFEITURE:
In case of arrearage or other breaches of contract,
Whenever changes or repairs are carried out on our cutting units without our prior
authorization,
Whenever the serial number is tampered with or cancelled,
Whenever the damage is caused by improper use, bad treatment, bumps, falls and
other causes not due to normal working conditions,
Whenever the unit seems tampered with, dismantled or previously repaired by
unauthorized staff,
In case the cutting units are used for purposes that are different from the ones
described in this manual.
All repair operations carried out under warranty do not interrupt its duration.
All disputes will be settled in the court of justice of Milan (Italy).
We thank you in advance for the attention you will pay to this manual and we invite you to
inform us of any change you deem necessary to improve it and make it more complete.

RASOR ELETTROMECCANICA SRL
Via Vincenzo Caldesi 6
20161 Milan ∙ Italy
ph. [phone]
fax [phone]
[email protected]
www.rasor-cutters.com
FOLLOW US: