1. Main application and scope of application




  NST-7040 learns the German brand PEHAPA double-column double-cylinder double-beam structure, combined with its professional 20 years of research and development experience, a new type of sawing machine specially developed for the die steel cutting industry.




The structure is scientific and reasonable, the appearance is generous, the cutting efficiency is high, and the service life of the band saw blade is long. It is an ideal cutting equipment for medium and small materials. This machine tool is mainly used for sawing ferrous materials. The material shape can be round or rectangular.




2. Main features:




1. Dual hydraulic control sawing feed speed, stepless speed regulation, more stable when sawing.




2. Manually tension the saw blade for easy operation and maintenance.




3. The linear speed of the saw blade adopts 5 speeds, which is suitable for sawing different materials.




4. Sawing is stable and high precision.




5. The work clamping adopts hydraulic pressure, ordinary feeding, and the operation is fast and convenient.




6. The surface of the guide cylinder where the saw beam is installed is chrome plated + ground. The precision of the matching gap of the guide copper sleeve is matched with a precise small gap at the factory to ensure stable feeding during sawing.




3. Working environment:




1. The ambient temperature is higher than 0oC




2. The relative humidity of the air is not more than 85% (equivalent humidity is 20 ± 5 oC)




4. Basic parameters and specifications: (see table below)




NST-7040 technical parameter specification table

Serial number	The main parameters	unit	specification
1	Maximum sawing diameter	mm	Ф400
2	Maximum sawing rectangle (height × width)	mm	400×700
3	Band saw specifications (length × width × height)	mm	5350×41×1.3
4	Saw wheel diameter	mm	Ф560
5	Table height	mm	730
6	Sawing line speed	m/min	18  26  39  56  76
7	Feed rate	mm/min	Hydraulic stepless speed regulation
8	main motor power	KW	5.5
9	Hydraulic motor power	KW	0.75
10	Cooling motor power	KW	0.09
11	Dimensions	mm	L2900X W2600（With material rack）X H1800
12	Machine weight	T	2
13	Workbench load	T	4
14	Workpiece sawing surface verticality	mm	≤0.25/100mm
15	Roughness of workpiece sawing surface	mm	≤12.5/100mm

V. Main mechanical structure

1. The machine feet are welded steel plates, the left side is a hydraulic oil tank and hydraulic system, and the right side is a combination of a cooling system equipped with a cooling pump and coolant.

2. The beam is a welded part of steel plate, which is composed of a worm gear reduction box, a saw wheel, a band saw blade guide device, a shield protection, and a saw blade tension device.

3. The band saw blade is installed on the two wheels and the guide device. After the driven wheel is tensioned, it is driven by the main motor. The band saw blade can make a circular movement around the two saw wheels to realize the main sawing movement. The saw beam is installed on the cylinder to guide the upward and downward movements, so as to complete the retracting and feeding movements.

4. The main transmission system is installed on the saw beam and is composed of the main motor, belt wheel and worm gear reducer. The speed of the band saw blade can be adjusted by changing the belt gear to suit the requirements of different materials and materials.

List of main parts purchased from machine tools

Serial number	Device name	unit	Quantity	manufacturer	Remarks
1	Main motor	只	1	Shanghai Dedong	5.5KWY132M-6
2	Cooling motor	只	1	Taizhou Huafeng	0.09KW
3	Cooling motor	只	1	Nanjing Elite (Taiwan-funded)	0.75KW
4	Hydraulic Components	只	1	Qiyang, Taiwan	Main components
5	transformer	只	1	Tianzheng	BK-150
6	Cylinder	只	3	Zhejiang Boxin