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JH21 C Frame Single Crank Press

JH21 C frame single crank power press (punch press, press machine, punch, stamping press, mechanical powewr press), capacity from 25 ton to 400 ton. Welded steel body, heat treatment, shot blasting, better rigidness, accuracy and stability. PLC control, wet type combined pneumatic clutch and brake, hydraulic overload protected, auto lubricated. The press can work with NC feeder for automatic production.

Quantity:
  • JH21
  • WORLD
  • JH21

HIGH RIGIDITY PRESS BODY

The press body is steel welded with high quality steel plates press body.jpg

by carbon dioxide arc welding.

All the weld seams must pass the examination of ultrasonic inspection.

The transmission gear house is tested by oil bath to avoid any oil leak.

Then, the press body will be heat treatment and sand blasting.

The welded stress will be released after all above treatment to ensure

the high rigidity. The full structure is optimized by computer and all the

key power points are strengthened by thicker steel plate or adding

reinforcement ribs. Multi-pass welding is used on the stiffened plate on

the throat.








HIGH PRECISION FOR PUNCHING AND STAMPING

The press body is milling and boring by PAMA machine center and all high performance press.jpg

the surfaces and holes will be finished machining in one time.

JH21 C frame press uses rectangular type lengthened slide guides

with bronze plates for higher guide precision.

Table surface is grinded by high performance grinding machine for

better flatness.

Slide adjustment precision is only 0.1mm

(for 60ton press and bigger models).

Crankshaft is under roller pressing treatment for better roughness.

Gears are grinding, high precision and lower noise.

 



WET TYPE COMBINED PNEUMATIC CLUTCH AND BRAKE

Press with pneumatic clutch can work as continuous, inches or singlewet clutch for press.jpg

stroke, more choices for operators.

All the friction discs and pressure plates are oil bath in the flywheel house.

Better lubrication and heat radiation ensure longer service life.

Lower noise than dry clutch and lower maintenance cost. Just need to

change the oil every half year, no need often to change the friction discs.

Brake system can stop the press at any point especially for emergency stop.

The clutch uses high quality friction discs and seals. Special Y type seals

ensure no oil leak.

All clutches are under balance testing and temperature testing before

assembling to the press.

 



EASY AND SAFE OPERAITON AND MAINTENANCE

The press is standard equipped with hydraulic overload system. Normally HMI for press.jpg

the system is set as 110% of the nominal capacity. The press will stop

immediately once it is overload than 110% to protect both the press and

the die. It is easy to reset the overload as there is a reset switch on the

control panel. The system can be reset within 3 minutes.

Anti-repeat system is equipped to protect the operator when the press

works as single stroke mode. Emergency stop button is on the control

panel to stop the press ram immediately if any dangerous happens.

Auto grease pump is also standard equipped and the operator can set

the lubrication frequency by the HMI according to the working time or

working stroke times.

HMI with setting function, I/O monitor, counter and preset counter.

The press has both mechanical and electrical cam controllers.

It is easy to set the cam angles to match the press with automatic

feeding system or transfer system.

Motorized slide adjustment with digital shut height indicator, precision is 0.1mm.

 

 

 



ITEM

CODE

UNIT

JH21-25

JH21-45

JH21-60

JH21-80

JH21-100

JH21-125

Nominal Capacity

Pe

KN

250

450

600

800

1000

1250

Slide Stroke Length

S

mm

80

120

140

160

160

180

Slide Strokes

Fixed


spm

100

80

70

60

55

50

Variable(optional)


spm

60-120

50-95

45-85

40-75

35-65

35-65

Max. Die Shut Height

H2

mm

250

270

300

320

335

350

Die Shut Height Adjustment

t

mm

50

60

70

80

90

90

Throat Depth

C1

mm

210

225

270

310

330

350

Distance Between Uprights

d1

mm

450

515

560

610

670

670

Slide Bottom Size

FB

b

mm

250

340

400

460

520

520

LR

a

mm

360

410

480

540

620

620

Shank Hole Size

Diameter

d

mm

40

50

50

50

70

70

Depth

I

mm

65

60

70

65

90

90

Table Size

FB

D

mm

400

440

520

600

640

680

LR

C

mm

720

825

930

950

1060

1100

Thickness

H3

mm

80

110

130

140

145

155

Table Hole Diameter

¢

mm

150

150

150

180

180

200

Overall Dimensions

FB

A

mm

1500

1585

1540

1765

2000

2040

LR

B

mm

945

1075

1200

1200

1300

1320

Height

H

mm

2120

2390

2570

2725

3010

3035

Motor Power


KW

3

5.5

5.5

7.5

7.5

11

Weight(approximate)


kg

2450

3550

5150

6450

8650

9550

ITEM

CODE

UNIT

JH21-160

JH21-200

JH21-250

JH21-315

JH21-400

Nominal Capacity

Pe

KN

1600

2000

2500

3150

4000

Slide Stroke Length

S

mm

200

200

220

220

250

Slide Strokes

Fixed


spm

45

45

30

30

30

Variable(optional)


spm

30-55

30-55

20-35

20-35

20-35

Max. Die Shut Height

H2

mm

400

450

500

500

550

Die Shut Height Adjustment

t

mm

100

110

120

120

120

Throat Depth

C1

mm

400

430

450

450

490

Distance Between Uprights

d1

mm

736

910

980

980

1050

Slide Bottom Size

FB

b

mm

580

650

700

700

750

LR

a

mm

700

880

950

950

1020

Shank Hole Size

Diameter

d

mm

70

70

70

70

70

Depth

I

mm

100

100

130

130

130

Table Size

FB

D

mm

760

840

880

880

950

LR

C

mm

1175

1390

1500

1540

1700

Thickness

H3

mm

165

180

190

190

210

Table Hole Diameter

¢

mm

220

240

260

260

280

Overall Dimensions

FB

A

mm

2305

2600

2660

2720

2850

LR

B

mm

1420

1540

1640

1680

1750

Height

H

mm

3215

3800

3850

3850

4140

Motor Power


KW

15

18.5

22

30

37

Weight(approximate)


kg

13600

19200

23200

26600

29500


. Light Barriers

. Inverter

. Cushion

. Decoiler

. Straightener

. NC Feeder

. Transfer Bar

. Manipulator


HIGH RIGIDITY PRESS BODY

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