The new generation of NARGESA Mandrel-less Tube Benders CC60 and CC90 perform bends on hollow tubes up to 180º with the best finish, maximum speed, and thinner wall capacity than other machines in the same category. The tubes can be round, oval, square, rectangular… and in various materials: iron, aluminum, stainless steel, copper... CC60 · Maximum capacity for round S275 steel tube: 60.3 mm or 2" Schedule‑40 or 2" 1/4 × 4 mm. CC90 · Maximum capacity for round S275 steel tube: 88.9 mm or 3" Schedule‑40 or 3" 1/2 × 6 mm.
Frequently Asked Questions about NARGESA Mandrel-less Tube Benders:
What advantages do Nargesa mandrel-less tube benders offer in terms of design and functionality?
The CC60 and CC90 mandrel-less benders, unlike other brands, can bend both thick-walled and thin-walled tubes. The latter is much harder to achieve. Most benders can only bend tubes with a thickness of 10% of the tube diameter. For example, a 40 mm tube must have a 4 mm wall thickness to avoid wrinkling. In the Nargesa models, we can bend a 40 mm tube with wall thicknesses below 5%, i.e., 1.5 mm. Elbow benders that only use 2 rollers to support the tube during bending cannot handle thin walls. These and many other advantages make the CC60 and CC90 benders the best choice for top-quality finishes at various thicknesses.
What control systems are integrated into the Nargesa mandrel-less tube benders to ensure precision and repeatability during the bending process?
The Esa S625 CNC controller along with an Absolute Angular Encoder ensures a positioning error margin of ± 0.1 degrees, i.e., completely negligible. This way, unlike machines with limit switches, repeatability is guaranteed.
What maintenance and durability considerations should be taken into account when operating the Nargesa mandrel-less tube benders?
Maintenance is practically zero. Just lubrication after a certain number of operations as indicated by the machine. The CNC itself will notify when lubrication is required. This task can be carried out by the customer without issue. Unlike other brands, the gearbox is entirely made of steel and not aluminum gears. One way to notice this is the machine's weight — CC60 and CC90 models weigh more than twice as much as other machines with the same capacity. These are machines made like in the past, but with today’s technology and improvements.
What customization options and accessories are available for Nargesa mandrel-less tube benders?
All kinds of dies can be customized with different tube diameters and materials. Die radii can also be manufactured to customer specifications or according to drawings. Many applications have been implemented across various industries. The experience of our engineers always brings added value to Nargesa clients.
How does the absence of a mandrel affect bending quality, and in which cases is a mandrel-less bender recommended?
Obviously, the result on thin-walled tubes is not the same. When the tube wall thickness is below recommended specs, small ripples may appear. That is why special aluminum-bronze dies with a specific shape were designed in Nargesa benders to minimize deformation. In most brands — especially those that only use support rollers and no counter-shapes — greater wall thickness is needed to achieve good results. It is not advisable to buy such benders for thinner tubes.
What kind of tools and dies can be used with Nargesa mandrel-less tube benders?
All tools are made of hardened S355 steel, and counter-shapes are made of aluminum-bronze. In some cases — for stainless steel or aluminum tubes — we manufacture counter-shapes in sustarin to reduce friction and achieve a perfect visual finish.
What impact does rotation speed have on bending efficiency, and how does this compare to other bending systems?
Rotation speed is very important. Some machines have two speeds — slow and fast. Nargesa models include a control bar with a speed potentiometer allowing the user to select the most appropriate speed for each tube. This is crucial for maximizing machine performance. For example, when performing a bend for the first time, we set the speed to minimum to ensure everything works properly. Once the first piece is done, we can increase to maximum speed (this maximum is automatically set by the CNC depending on tube diameter and thickness). This makes work easier and increases productivity.
Which are the main industrial sectors that use Nargesa mandrel-less tube benders?
The sectors are very diverse: nautical industry, blacksmithing, automotive, aeronautics, agriculture, mobility, construction, furniture, playgrounds, and many more… The applications are endless — practically every piece involving a tube has a bend somewhere. Welding and polishing are very costly. With this method, we increase both productivity and aesthetic quality of the piece.
How is operator safety ensured when working with Nargesa mandrel-less tube benders?
All Nargesa machines are manufactured under CE regulations. Specifically, the CC60 and CC90 benders have a maximum speed programmed and locked in the CNC for each tube diameter to prevent possible collisions. Additionally, when the operator releases the foot pedal, the machine stops. It is a simple machine that poses no danger to the operator.