What tube sizes does the MR426 cut?

The MR426 cuts round tube from Ø102 – Ø426, square section up to 120 – 300 mm and wall from 4.0 to 12.0 mm. Larger sizes and heavier walls move up to the next model in the range.

How fast does it cut?

Line speed 40 m/min, and the cut length runs from 4,000 – 12,000 mm. Actual length accuracy depends on the encoder, the clamp and the carriage speed being matched to your line speed.

Which saw blade should I use?

HSS / TCT. HSS is the economical choice for thin wall and general carbon steel; TCT lasts longer and holds an edge better on harder material and thicker wall.

What does the saw motor size mean?

The saw motor is the one doing the cutting. 22 kW × 2 on this machine, with the carriage on 45 kW servo and feed on 4.4 kW × 2. The three are matched as a set; you cannot upgrade one of them on its own.

Can this saw be added to an existing mill?

Yes. Send us the mill model, the tube OD range and the line speed, and we will confirm the foundation, the power supply and the control interface before you commit.

Is this model available with a twin blade arrangement?

The twin blade coordinate type exists for the same size range and is worth considering if your wall is at the heavy end of the specification. We will tell you honestly which one is the better economic choice for your duty.

MR426M Milling Type Flying Cut-Off | Ø102 – Ø426 Twin Blade, 4.0 – 12.0 Wall

What the MR426M milling cut-off does

The rotating-plate twin-blade machine. The rotating plate lets the two blades trace the profile of a large tube, which a fixed-axis pair cannot follow above a certain diameter.

Between Ø377 and Ø508 there is a band where the tube is too large for a fixed two-axis machine and not quite large enough to justify the biggest gantry. The MR426M was built for exactly that band: a rotating plate carries the cutting heads around the profile, so square tube and round tube both come off the line with a milled, square face. 12 mm wall at Ø426 is routine work here.

Technical specifications

Model	Round tube OD	Square section	Wall thickness	Line speed	Cut length	Saw blades	Saw motor	Feed motor
MR426M	Ø102 – Ø426	120 – 300	4.0 – 12.0	40 m/min	4,000 – 12,000	Twin blade, profile milling	22 kW × 2	4.4 kW × 2

What comes with the machine

Twin-blade milling head — two blades share the cut, so heavy wall stays economical and the face comes off square.
Profile following — the head traces the tube section, round or square, instead of cutting straight across it.
Saw blades — HSS / TCT blade pair, sized to the diameter range rather than to one enormous disc.
Control — servo feed on each axis, coordinated by the profile controller.
Guard and extraction — enclosed cutting with chip extraction.

Where it is normally installed

Like every flying cut-off, the machine sits on the exit side of the sizing stand and travels with the tube. The difference is the cutting path: the head mills around the section, which takes a little longer per cut and buys the ability to cut diameters and walls no single-blade saw can touch economically.

All Milling Type Flying Cut-Offs

Model	Round tube OD (mm)	Wall thickness (mm)	Line speed (m/min)	Saw motor	Feed motor
MR219M	Ø89 – Ø219	2.0 – 12.0	40	15 kW × 2	7.5 kW × 2
MR273M	Ø102 – Ø273	2.5 – 12.0	40	15 kW × 2	4.4 kW × 2
MR377M	Ø140 – Ø377	3.0 – 15.0	35	22 kW × 2	4.4 kW × 2
MR426M	Ø102 – Ø426	4.0 – 12.0	40	22 kW × 2	4.4 kW × 2
MR508M	Ø219 – Ø508	3.0 – 16.0	30	22 kW × 2	4.4 kW × 2

Questions buyers ask about the MR426M

[(‘What sizes does the MR426M cover?’, ‘Round Ø102 to Ø426 mm, square to 300 mm, wall 4.0 to 12.0 mm at around 40 m/min.’), (‘What does the rotating plate do?’, ‘It carries the twin cutting heads around the tube profile, so the blades follow the section instead of cutting across it. That is what keeps the face square on large tubes.’), (‘MR426M or MR508M?’, ‘By top diameter and wall. Inside Ø426 and 12 mm wall, the 426 is the more economical machine; the 508 adds capacity you only need if your specification really goes there.’)]

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