PRADA NARGESA MC200 User manual

INSTRUCTIONS BOOK
PRADA NARGESA, S.L
Ctra. de Garrigàs a Sant Miquel s/n
17476 PALAU DE STA. EULALIA (GIRONA) SPAIN
Tel. [phone] - Fax [phone]
www.nargesa.com - [email protected]
BENDING MACHINE
MC200

Thanks for choosing our machines
www.nargesa.com

MC200 BENDING MACHINE INSTRUCTION BOOK 2
TABLE OF CONTENTS
1. MACHINE DETAILS ................................................................................................................
1.1. Machine identification details ......................................................................................
1.2. Dimensions .................................................................................................................
1.3. Description of the machine ..........................................................................................
1.4. Machine part identification ..........................................................................................
1.5. General characteristics ...............................................................................................
1.6. Description of the guards ...........................................................................................
2. TRANSPORT AND STORAGE ...............................................................................................
2.1. Transport .....................................................................................................................
2.2. Storage conditions ......................................................................................................
3. MAINTENANCE .......................................................................................................................
3.1. General maintenance ..................................................................................................
4. INSTALATION AND START UP ..............................................................................................
4.1. Positioning the machine .............................................................................................
4.2. Dimensions and work area .........................................................................................
4.3. External admissible conditions ...................................................................................
4.4. Instructions for connecting to the power supply ..........................................................
5. INSTRUCTIONS FOR USE .....................................................................................................
5.1. Bending principles ......................................................................................................
5.2. Assembling the rollers ................................................................................................
5.3. Positioning the base-plate ...........................................................................................
6. WARNINGS .............................................................................................................................
6.1. Residual hazards .......................................................................................................
6.2. Counter-productive methods ......................................................................................
6.3. Other recommendations .............................................................................................
7. ASSEMBLY OF THE ROLLERS ............................................................................................
7.1. Bending capacity ........................................................................................................
7.2. Different bending samples ..........................................................................................
8. OPTIONAL ACCESSORIES ...................................................................................................
TECHNICAL ANNEX
3
3
3
3
4
5
6
7
7
7
8
8
9
9
9
9
10
12
12
12
13
14
14
14
14
15
16
17
19

MC200 BENDING MACHINE INSTRUCTION BOOK 3
1. MACHINE DETAILS
1.1. Machine identification details
Trademark: NARGESA
Type: Hydraulic bending machine
Model: MC 200
1.2. Dimensions
Figure 1. External dimensions of the MC200 bending machine
1.3. Description of the machine
The MC200 bending machine is a machine specifically designed for bending profiles, the majority of which
are metal, with different thicknesses and configurations, such as solid profiles, pipes, T-profiles, angles...
The bending machine offers a set of standard tools, rollers, to allow the bending of profiles in a range of
shapes and sizes.
Apart from the standard rollers, the manufacturer also offers different types of additional rollers to produce
other types of bending, according to the configuration of the material to be handled, as well as specific roll-
ers for work with stainless steel or aluminium, manufactured with *Sustarin, that prevents scratches and
damage on the surfaces.
* Sustarín: Polyoxymethylene, high resistance and high rigid crystalline thermoplastic, low friction and excellent dimensional stability
PRADA NARGESA S. L is not liable for any damage that might occur due to misuse
or failure by users to comply with the safety standards.

MC200 BENDING MACHINE INSTRUCTION BOOK 4
1.4. Machine part identification
Anchor point
Vertical roller guide adjustment screws
Upper roller adjustment handle
Upper roller adjustment spindle
Roller guides deformation adjustment
Top roller - smooth *
Lower rollers - knurling *
General switch
Emergency
stop
Pedals
Terminals cover
Base-plate fastener
Electrical panel
* Bending rollers

MC200 BENDING MACHINE INSTRUCTION BOOK 5
Figure 2. Nameplate
1.5. General characteristics
Motor power 1.1Kw/1.5 CV a 900 r.p.m.
Voltage 230/400 V 3 phased
Intensity 5.2 / 2.6 A
Type of pull Two rollers
Roller speed 8 r.p.m.
Axes diameter 40 mm
Axes useful length 74 mm
Structure material Plate
Total weight 320 Kg
Dimensions 830x685x1350 mm

MC200 BENDING MACHINE INSTRUCTION BOOK 6
1.6. Description of the guards
The gear motor and all the gears that allow the operation of the machine are located under the main upper
cover that protects the mechanisms.
Although the major mobile elements are protected by the upper cover, it is necessary to take special pre-
cautions during bending operations in order to avoid entrapment between the rollers and the piece being
bent.
Figure 3. Mechanism protection guards

MC200 BENDING MACHINE INSTRUCTION BOOK 7
2. TRANSPORT AND STORAGE
2.1. Transport
There are two ways of carrying out the transportation of the machine:
- From the bottom, through the base of the machine, using a pallet jack or forklift as shown in the illustra-
tion. Never raise the machine more than 200 mm from the surface in order to prevent the risk of tipping
- From the top of the machine, from the anchor point designed for this purpose defined in figure 4, using a
crane or forklift .
Figure 4. Transportation of the machine
2.2. Storage Conditions
The bending machine shouldn’t be stored in a place that does not meet the following requirements:
- Humidity between 30% and 95%
- Temperature of -25 °C to 55 °C or 75 °C for periods not exceeding 24hrs
(remember that these temperatures are in storage conditions)
- Machines or heavy objects should not be stacked on top
- Do not take apart for storage
CAUTION:
Before moving the machine, it is essential to check that the screw located in the interior of the cabinet, at
it’s top, is properly secured. This ensures the work of the machine in vertical position without it moving.
If the machine is moved while it is in upright position without the screw being correctly secured, there is
danger that the machine could tip over, damaging its structure or harming users handling it .

MC200 BENDING MACHINE INSTRUCTION BOOK 8
3. MAINTENANCE
3.1. General maintenance
- It is recommended to keep greased the upper roller adjustment spindle, to ensure proper operation, pre-
vent stiffness, and to extend its useful life.
- It is advisable to keep the friction rule lubricated along which the upper roller support slides. It is also nec-
essary to ensure a minimum lubrication of the inner walls along which the upper roller support slides.
In order to lubricate the moving parts of the machine that require lubrication, it’s recommended to follow the
next instructions:
- Clean the surface to be lubricated with a cotton cloth or a soft rag that does not release any threads. To
remove the accumulated grease and any possible residues that have become stuck to it.
- After cleaning, reapply grease onto the surface with the help of a rag or a spatula.
- Spread the grease evenly without creating excesses or clumps.
- Once the machine is lubricated, using the upper roller adjustment handle that controls the height of the
upper roller, raise this until it reaches its highest point.
- When the upper roller comes to its highest point, reverse the direction of the adjustment handle, to lower
the roller to its lowest point.
- Repeat the operation to ensure that the friction rule is lubricated.
- Lubricate the machine on a regular basis according to its use.
* It is recommended that you use lithium grease type: N.850 EP-2 for bearings.
CAUTION:
The "Emergency Stop" push button must be pressed and the machine brought to a stop in order to lubri-
cate the machine”.

MC200 BENDING MACHINE INSTRUCTION BOOK 9
4. INSTALLATION AND START UP
4.1. Positioning the machine
Locate the machine properly in order to avoid moving it; otherwise, follow the guidelines described in the
paragraph transport (no. 2). Must be placed on a flat, level surface to prevent it vibrating and moving during
bending operations.
It is possible to fix the machine using bolts due to the fact that it already comes with a lower base with four
holes as shown in figure 5.
Figure 5. Anchor points of the machine
4.2. Dimensions and work area
The dimensions must be considered when the machine is being placed, the working area for the operator
and the possible lengths of the parts to be worked.
The bending machine can be used by a single operator, who must be directly in the front of the machine to
be able to handle the piece being bend with safety, and never on the side.
Prior to commencing the bending operation, with the machine shut down, the operator must adjust the
bending rollers, adapting them to the material and the profile to be bent, as shown in paragraph 7, figure
12 .
Figure 6. Operator's working area
4.3. External permissible conditions
- Room temperature between +5 °C and +40 ºC without exceeding an average temperature of +35 °C
within 24 hrs.
- Humidity between 30% and 90% without water condensation .

MC200 BENDING MACHINE INSTRUCTION BOOK 10
4.4 Instructions for connecting to the power supply
The MC200 bending machine comes equipped with a 230V/ 400V 1.1Kw three-phase motor prepared to be
connected to a 400V power supply. It must be connected through the connector to a compatible source
with the specified requirements.
If you want to connect the machine to a 230V three-phase voltage, a series of changes must be made to
the electrical panel. These are the following:
- Change of the main motor coil connections
- Change of the transformer connections
- Adjustment of the intensity range of the engine guard contactor
Change of the motor connections:
When the power supply voltage is 400V three-phase, we perform the connection in a Star shape (default
setting in the machine). In the case of 230V three-phase, we perform the connection in a Triangle shape.
As shown in the figure.
The modification of the connection must be made through the motor terminal box located in the rear of the
machine, changing the configuration of the flats according to the power voltage.
Figure 7. Change of engine connections
IMPORTANT: This machine must be connected to an electrical outlet with earthing contact.
A check must be carried out to ensure that the machine is not connected to the power supply
prior to making any modification to the connection or the electrical panel.
Star figure
(Default)
For voltage 400V
Triangle figure
For voltage 230V

MC200 BENDING MACHINE INSTRUCTION BOOK 11
Changing the transformer connections:
Depending on the operation voltage required, the connections will also have to be changed in the transfor-
mer. This is located secured to the electrical panel inside the machine cabinet as shown in section A3.
Electrical cabinet
This is like the one shown in the diagram below. In order for the machine to operate at 400V, the inlet ter-
minals connected are identified as “0v” and “415v”. To modify the operation voltage to 230V, all you have to
do is release terminal “415v” using a star screwdriver and connect the released cable to the “230v” inlet
and tighten it with the screwdriver .
Figure 8. Changing the transformer connections
Adjust the range of intensities of the motor guard contactor:
Depending on the power voltage, the working intensity also varies, and it is therefore necessary to also
modify the working range of the engine protection devices. The motor guard contactor is secured to the
electrical panel as shown in section A3. Electrical cabinet
The motor guard contactor has a structure like the one shown in the diagram below and allows a rapid ad-
justment through the regulator located at the front.
The regulator indication arrow must be around “5A” for 230V three-phase connection. In the case of a 400V
three-phase connection, this must be around “2.6A”.
*If the motor guard contactor installed cannot assume the intensity range required, this must be replaced
with one with a greater range.
Figure 9. Intensity range adjustment
Intensity regulator

MC200 BENDING MACHINE INSTRUCTION BOOK 12
5. INSTRUCTIONS FOR USE
5.1. Bending principles
- The bending machine motor is started up using two pedals without interlocking, one for the clockwise ro-
tation and the other for the anti-clockwise rotation.
- To set the radius of curvature, adjust the height of the upper roller through the adjustment handler located
on the top side of the machine.
- For emergency stop just press the emergency button located at the top of the turning drive pedals.
- You can place the material in the machine on both sides. Use the upper handle to adjust the height of the
upper roller and thereby adjust the material input. Use the millimetre scale to recognize the position.
- The distance between the deformation adjustment roller guide and the work surface must be modified in
order to adjust the alignment of the material. This task will be performed by tightening the adjusting screws
located at the rear of the machine. These roller guides guide the material to minimise lateral deformation.
(The support roller guides must gently press against the profile to be bent)
- It is recommended to cut the tip into a wedge shape in order to obtain optimum bending in the profile to be
worked, to facilitate its entry.
- In the event of not obtaining the proper results, the position of the guide rollers for deformation must be
adjust.
- The roller mounting nuts must be tightened by manual force only .
5.2. Assembly of the rollers
Figure 10. Position of the rollers in relation to the machine axes

MC200 BENDING MACHINE INSTRUCTION BOOK 13
5.3. Positioning the base-plate
The MC 200 can be worked with the base-plate in the horizontal or vertical position according to what is
deemed necessary, depending on the tasks to be performed.
In order to place the bending machine in horizontal position:
- Open the cabinet and loosen the clamping screw located in the interior, in the top of the cabinet, as speci-
fied in paragraph 1.4 Machine identification details.
- Once the screw is loosened, tilt the base-plate backwards that houses the rollers and the gear motor with
the help of another operator.
- Be careful, while slope, the bench must be held by the top handle and by its back part. Never handle the
base-plate via the horizontal base that supports the work area, owing to the risk of entrapment.
- The machine will be supported on top of the cabinet that holds it, allowing the horizontal work.
To return the machine to its vertical configuration:
- With the help of another operator, handling the base-plate through the rear (now located in horizontal) and
the top handle, reposition the base-plate in an upright position.
- Once positioned in vertical, screw the clamping screw, located in the inside of the cabinet, to prevent the
base-plate from returning to its horizontal position.
Figure 11. Machine dimensions with the base-plate in a horizontal position
CAUTION:
To change the configuration of the machine from vertical to horizontal or vice versa, the machine must be
stopped and the "Emergency Stop" push button pressed.
Never handle the machine around the axes or the rollers while changing configuration.
Before using the bending machine in a vertical position, and after the configuration change, ensure that
the fixing screw has a proper torque and the machine is stable.

MC200 BENDING MACHINE INSTRUCTION BOOK 14
6. WARNINGS
The MC200 bending machine is designed and assembled to allow the operator to handle the machine and
bend the necessary parts in a completely safe manner. Any change to the machine's structure or character-
istics could modify the safety offered by the machine, breaching the EC certificate of conformity and could
endanger the operator.
6.1. Residual hazards
Hazardous conditions may occur during the bending of materials that must be analysed and prevented.
Attention should be paid to the movements of the piece to be bent and the roller while the material is being
introduced into the machine as well as during its shaping. Despite the fact that the forward speed of the
rollers is slow, there is a risk of entrapment in the extremities between the rollers and the part.
Users of the machine are recommended to handle the part to be bent firmly with one hand and to move the
hand according to the progress of the bending operation in order to maintain a safe distance from the roll-
ers.
It is also necessary to prepare the work area to prevent other operators from injuring themselves during
operation of the machine.
6.2. Counter-productive methods
Tools or rollers that are not supplied by the manufacturer of the machine, NARGESA S.L., and which have
not been specially designed for the MC200 bending machine should never be used .
6.3. Other recommendations
- Use gloves for handling the machine and during the bending processes.
- Wear EC-approved goggles and protective boots
- Handle the material at the ends, and never around the area being bent
- Do not work without the protection devices that the machine is fitted with
- Ensure that there is a safe distance between the machine and the operator

MC200 BENDING MACHINE INSTRUCTION BOOK 15
7. ASSEMBLY OF THE ROLLERS
IMPORTANT NOTE:
The clamping nut of the rollers should never be tightened with a wrench and only by hand. If pipe rollers
are being used, the nuts must be loose.
1. Front nut
M30x200
2. Thick washer
3. 55mm Upper roller
4. 40mm Upper roller
5. 25mm Upper roller
6. 55mm Lower rollers
7. 40mm Lower rollers
8. 25mm Lower rollers
Figure 12. Nomenclature of the rollers and assembly

MC200 BENDING MACHINE INSTRUCTION BOOK 16
7.1. Bending capacity
MC150B MC200 MC200H MC400 MC650
Prole Measures Min.
radius Measures Min. radius Measures Min. radius Measures Min. radius Measures Min. radius
50 x 8 300 50 x 10 300 60 x 10 200 50 x 10 250 100 x 20
80 x 20
1250
450
60 x 20 200 80 x 20 150 80 x 20 150 80 x 20 150 100 x 25
80 x 20
350
200
25 x 25 200 30 x 30 200 30 x 30 150 30 x 30 150 45 x 45
25 x 25
300
200
40 x 40 x 3 350 50 x 50 x 3 600 50 x 50 x 3 450 50 x 50 x 3 700 70 x 70 x 4
40 x 40 x 3
750
350
40 200 40 200 40 200 40 150
80 *
70
40
500
400
150
40 250 40 250 40 250 40 200
80 *
60
40
500
400
150
50 200 60 225 60 225 60 300 120
80
600
400
50 250 60 225 60 225 60 300 120
80
700
400
40 500 40 420 40 300 40 200 70
40
600
250
25 180 30 150 30 150 30 150 50
25
300
175
40 x 2 *
50 x 3 *
300
600
40 x 2 *
60 x 3 *
250
500
40 x 2 *
60 x 3 *
200
300
40 x 2 *
60 x 3 *
200
450
101,6 x 3 *
88,9 x 4 *
700
700
* Optional rollers

MC200 BENDING MACHINE INSTRUCTION BOOK 17
7.2. Different bending samples
Figure 13. Examples of bending in different pipes and profiles

MC200 BENDING MACHINE INSTRUCTION BOOK 18
Hydraulic piston
The movement of the spindle to assign the bending grades is performed by the adjustment handler located
at the top of the machine.
In the case of carrying out mass production works or jobs requiring much maneuvering of the upper roller,
curving and shaping of parts can be laborious, thus increasing the forming time and the final price of the
part.
For this type of work requiring more effort, NARGESA has designed an accessory that consists of a
hydraulic piston that can be attached easily, enabling a rapid position of the upper roller and improving ben-
ding with minimal effort. This accessory is available on request from the official dealer or directly from NAR-
GESA SL
Figure 14. Mounting the hydraulic accessory

MC200 BENDING MACHINE INSTRUCTION BOOK 19
8. OPTIONAL ACCESSORIES
The bending machine has been designed for bending all kinds of profiles irrespective of their shape.
The standard rolls included as standard on the bending machine allow the configuration of all kinds of
handrails, angles, square, round pipes, etc., thanks to their multiple configurations.
In order to facilitate the bending of certain more delicate materials that require a very good surface finish
or to facilitate the bending of more common sections, NARGESA has designed a series of rollers that can
be purchased at an official dealership or by directly by contacting NARGESA S.L.
Besides the accessories shown below, NARGESA also designs special rollers upon specific request for
customers .
Set of 3 tempered steel rollers for round steel or stainless steel tubes with a thickness great-
er than 2 mm.
1" GAS = 33,250 mm 1" WHITWORT = 25,401mm
Weight: from 6 to 13 Kg
Two measurements are added in the same roller when the measure-
ments of the pipes are small. i.e. (20+30) or (1/2"+1"1/4)
Always clean the roller guides thoroughly before using stainless steel so
as not to contaminate the pipe.
For mm tubes.
(25+30)
(20+30)
(20+35)
40
50
60
For Gas inches tubes
(1/2”+3/4”) = (20,956 + 26,442 mm)
(3/8”+1”) = (16,663 + 33,250 mm)
1”1/4 = 41,912 mm
1”1/2 = 47,805 mm
2” = 59,616 mm
For Whitwort inches tube
(1/2”+1”1/4”) = (12,700 + 31,751 mm)
(1”+3/4”) = (25,401 + 19,051 mm)
1”1/2 = 38,101 mm
2” = 50,802 mm
2”1/2 = 63,502 mm
For ISO mm tubes
(17,2+21,3)
(33,7+26,9)
42,4
48,3
60,3
Set of 3 Sustarin rollers for stainless steel, aluminium tubes and delicate materials with a thickness
less than 2.5 mm.
For mm tubes.
(25+30) - (20+35) - 33 - 40 - 43 - 50 - 50,8 - 60
1" GAS = 33,250 mm 1" WHITWORT = 25,401mm
Weight: 2,5 Kg
Two measurements are added in the same roller when the
measurements of the pipes are small. i.e. (20+30) or (1/2"+1"1/4)
The Sustarin roller guides do not damage or contaminate the pipe.
For any other measurement or profile, check with the
manufacturer.