Tube processing machine

Automatic steel bar cutting machine

Steel Bar Shearing Machine CJ-80

CJ-80, an automatic shearing cutting machine specially designed for round bar cutting. It features high speed and efficiency, making it ideal for use in the fastener manufacturing industry.

Features:

  • Equipped with a fully automatic feeding rack that automatically centers the material. No manual feeding, flipping, or alignment required — one operator can manage multiple machines, reducing labor intensity and saving costs.

  • Adopts a fully enclosed flip-top blade mold design for easy tool change; it can rotate 360° for repeated use, offering longer service life.

  • Reinforced gear made of alloy steel with standardized heat treatment for greater transmission torque.

  • Crankshaft made of high-strength alloy steel with excellent rigidity and fatigue resistance.

  • Professional-grade bimetal sliding guide rails provide superior wear resistance and durability.

  • Automatic oil pump lubrication system for guide rails, with automatic alarm when oil supply is interrupted.

  • Well-designed material stopper mechanism ensures precise cutting length and easy adjustment.

  • Enclosed gearbox with oil-immersed gears and bearings provides reliable lubrication.

  • Optimized stopper design delivers higher cutting accuracy, smaller weight deviation, and smoother cut surfaces.


Machine model

CJ-30

CJ-40

CJ-50

CJ-65

CJ-80

Maximum shear diameter (mm)

30

 40

 50

 65

 80

Max Cutting speed(s/min.)

60

60

50

32

25

Cutting length range (mm.)

20-300

20-300

20-300

20-300

35-300

Max Section inclination

2

2

2

2

2

Section roundness

0.95

0.95

0.95

0.95

0.95

Shear weight error (grams)

±0. 5%

±0. 5%

±0. 5%

±0. 5%

±0. 5%

Main motor power (kw)

3.0

5.5

7.5

11.0

22.0

Weight of machine (kg)

2000

2500

3500

5000

7000

Materail

Max cutting size (round)

#20 Steel  Q235

30

40

50

65

80

20MN  20 Cr

30

40

50

65

80

#45 

30

40

50

65

80

#55 /40Cr  /20 CrMn / 2Cr13

22

28

38

45

65

35 CrMo  3Cr13

20

25

32

40

60

42CrMo  Gcr15  60Cr2Mn

16

22

28

38

55

Note: The maximum cutting size listed in the table is a reference value based on hot-rolled or annealed steel.
If the material to be cut is in a cold-drawn or cold-rolled state, the maximum cutting size should be reduced by 20%.



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