Cosen Automatic NC Twin Column Bandsaw

Fully automatic production sawing · Precision twin-column

Cosen

320, 420, 520 or 620 mm capacity
straight cut only
NC programable

The Cosen C-320NC, C-420NC, C-520NC and C-620NC are fully automatic twin column horizontal bandsaws for straight cut-off. Two oversized round columns tied by a cross link carry the saw frame, and a hydraulic shuttle vice feeds the material under Cosen's Smart NC-100 control.

Four capacities cover 320 to 620 mm round and up to 620 x 760 mm rectangular, in single pieces or in bundles with the optional hydraulic top clamps. They suit steel merchants, machine shops and fabricators running cut lists in volume on large solids, tube and section.

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Key features

Twin column frame with cross link

The saw frame runs on two oversized round columns joined by a cross link at the top. Cutting force and feed rate stay even from the top of the cut to the bottom, so large solids and thick-wall tube are cut square without the frame deflecting.

Smart NC-100 control

The 5.7 inch HMI with Mitsubishi PLC stores up to 100 jobs by length and quantity, compensates kerf loss automatically and shuts the machine down at job end or when the bar runs out. A cut list is entered once and runs automatically, with blade speed, blade life and error codes read from the screen.

Double retracting vice jaws

Both jaws of the shuttle vice open and close together, so crooked or misaligned bar is centred by the vice rather than pushed to one side. Bent stock feeds without jamming and the cut stays square to the bar.

Automatic work height selector

A height selector and quick approach rod bring the saw head down at rapid rate to a set clearance above the material, then feed at the cutting rate. Air cutting time is reduced on every stroke without the operator setting the approach height.

Split front vice

The front vice holds the workpiece on both sides of the blade, so burr is reduced and the remnant kept short. Less material is scrapped on each bar.

Dual valve feed control

Feed rate and cutting pressure are set on separate valves against a material scale on the panel. Feed is matched to the material without trial cuts, and the blade is protected on hard or work-hardening grades.

Hydraulic blade tension

Blade tension is set and held hydraulically with breakage detection, and the blade is relaxed when the machine is switched off. Tension is correct on every start and blade life is extended between shifts.

Bundle cutting

Hydraulic top clamps and full-stroke vices are fitted for bundle cutting, selected from the HMI with the single or bundle cut switch. Multiple pieces of bar or tube are held from above and the side and cut in one stroke. Optional.

Is the Cosen Auto NC Twin Column right for your workshop?

The Auto NC Twin Column saws are specified where straight cut-off of large solids, tube and bundles runs automatically from a job list. The choice between the four models comes down to the largest material cut, from 320 to 620 mm round. Model is confirmed from material sizes and volume at quotation.

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Specifications

Model	C-320NC	C-420NC	C-520NC	C-620NC
Round capacity	320 mm	420 mm	520 mm	620 mm
Square capacity	320 mm	420 mm	520 mm	620 mm
Rectangular capacity (H x W)	320 x 380 mm	420 x 420 mm	520 x 560 mm	620 x 760 mm
Blade speed	20 to 100 m/min	20 to 100 m/min	20 to 100 m/min	15 to 135 m/min
Blade size (L x W x T)	4240 x 34 x 1.1 mm	4770 x 41 x 1.3 mm	6370 x 54 x 1.6 mm	7200 x 54 x 1.6 mm
Blade motor	3.7 kW (5 HP)	5.5 kW (7.5 HP)	5.5 kW (7.5 HP), 7.5 kW optional	7.5 kW (10 HP)
Hydraulic motor	0.75 kW	1.5 kW	1.5 kW	1.5 kW
Blade tension	Hydraulic, breakage detection	Hydraulic, breakage detection	Hydraulic, breakage detection	Hydraulic, breakage detection
Feed	Hydraulic shuttle vice, NC automatic	Hydraulic shuttle vice, NC automatic	Hydraulic shuttle vice, NC automatic	Hydraulic shuttle vice, NC automatic
Single index stroke	403 mm	503 mm	503 mm	500 mm
Multiple indexing	to 99 m	to 99 m	to 99 m	to 99 m
Shortest remnant	50 mm	60 mm	90 mm	190 mm automatic, 20 mm manual
Workbed height	790 mm	735 mm	765 mm	755 mm
Weight	1708 kg	2351 kg	3812 kg	4822 kg
Floor space (L x W x H)	2101 x 2409 x 2029 mm	2595 x 2710 x 2344 mm	2274 x 3076 x 2795 mm	2793 x 4134 x 2590 mm

Model and options are confirmed against the material sizes and cut list at quotation. IMS holds Cosen parts and bandsaw blades in Australia and services the machine with its own technicians.

Specifications are indicative and subject to change by the manufacturer without notice. Please confirm any figure critical to your application before ordering.