Ring roller bender and section bending machines

Frequently asked questions about NARGESA Tube and Profile Bending Machines

What types of materials can these machines bend?

The Nargesa bending machines can bend various materials, including steel, aluminum, copper, brass, stainless steel, and other ferrous materials. For more delicate materials, such as stainless steel and aluminum, we manufacture Sustarín rollers, a high-strength crystalline thermoplastic polyoxymethylene with high rigidity, low friction, and excellent dimensional stability that does not damage or contaminate the material, preventing future oxidation over time and avoiding the need to polish bent or curved tubes.

What is the maximum diameter range for bending?

The range of Nargesa bending machines includes 9 models, each with a different maximum bending capacity:

• The MC150B has a maximum capacity of up to a 2” inch or 50 mm tube.
• The MC200, MC400, and MC200H models reach a bending capacity of up to 2 ½” or 63.5 mm.
• The MC550 model reaches up to 3 inches or an 80 mm tube.
• The largest model, MC650, can reach a capacity of 4” or 101.6 mm.

The capacity of a bending machine is determined by the diameter of its shafts, always depending on the tube thickness and the minimum bend radius. It is also important to consider how and with which materials the machine was manufactured. It is essential to avoid purchasing cast machines or materials prone to breakage. These machines exert high forces and must be able to handle different hardnesses depending on the type of material.

Do these machines require special maintenance?

No. They require basic maintenance, depending on usage, which includes lubricating the moving parts. These maintenance tasks are very simple and quick to perform; the machine operator can handle them. Almost all bending machine models on the market only require lubrication of the parts that experience friction during operation.

It is important to lubricate the gears every 6 months, depending on use. If the machine is used infrequently, once a year is sufficient.
The maintenance of Nargesa bending machines is limited to lubrication; they are very robust machines, designed to work long shifts every day. Some clients even use them 24 hours straight without stopping production.

Is it possible to customize the rollers of the bending machine?

Yes, it is possible. At Nargesa, we have a wide catalog of rollers. With the rollers supplied with the machine, we can bend all types of standard profiles and solid bars. With optional rollers, we can bend hollow tubes of different diameters and thicknesses, in millimeters and inches.

In cases where the profile to be bent has a complex geometry, the material is non-standard, or its dimensions require it, our technical team designs and manufactures special rollers to meet the client’s specifications.
It is important to design the rollers with sufficient clearance for the material, and at the same time, all walls and parts of the profile prone to deformation must be well supported to achieve a proper bend or curve.