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JH21 C Frame Single Crank Power Press

Most popular c type press machine for sheet metal parts stamping, punching, cutting, bending, trimming and blanking process. Press tonnages are from 25ton to 400ton. JH21 c frame press is standard equip with PLC, touch screen HMI, wet type pneumatic clutch and brake, safety solenoid valve, hydraulic overload pump, automatic grease lubricant pump and slide balance cylinders. Safety light barriers, frequency inverter for adjustable stroke speeds, piston type die cushion, die quick change clamps, tonnage monitor, safety die block are all optional. This single crank press can work with coil sheet roller feeder to act as an automatic press. Several automatic presses with transfer system such as manipulators can work as full automatic press line.
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  • WORLD

power press wet clutch

World patent wet type pneumatic clutch and brake for power press machine

World produce the flywheel, the drive shaft, the gear ring and assemble the clutch with imported friction discs and seals. The friction discs are oil bath which is better for lubrication and cooling. All clutches must pass temperature testing and weight balance testing. Wet clutch has the benefits such as longer service life, lower noise, cheaper maintenance cost and easier maintenance, comparing to dry type clutch. Especially for house hold appliance parts stamping due to more strict cleaness request.

PLC for pneumatic press control

Programmable logistic control system is standard equip to all world brand automatic power presses. Schneider, Omron, Panasonic are all available. Automatic grease lubrication pump is also controlled by the PLC and operator can set the lubrication time and frequency through the HMI. The press can work as inches, single stroke and continuous strokes. There is an emergency stop button on the control panel for emergency using. Press working status could be checked through the HMI too.

Hydraulic overload protection system for pneumatic press machine

World press uses hydraulic overload protection system instead of conventional mechanical shearing plate with higher reliability and more sensitive action. If wrong operation or press overload, the high pressure hydraulic oil under the bowl will return to the overload pump oil tank. Meantime a signal will be sent to the press and the press will stop immediately to protect the die and the pneumatic power press. There is a reset switch on the control panel and the overload pump will pump the hydraulic oil back to the ram. Press will be ready again for operation.

c type press compact structure

Compact stucture of the C type press

1. Cross located crankshaft

2. Motor and clutch are on the back

3. Two slide balance cylinders

4. C frame steel welded body, annealing treatment

5. Overload pump, grease pump and pneumatic system are all in the back

High precision rectangular type slide guides for the gap frame press

Lengthened rectangular type six faces ram slides with bronze plates fixed on the press body. Higher precision and longer surface life. Guide gaps could be adjusted by the bolts in the front. All the rams are casting in world factory and machining by cnc milling center. Automatic grease lubrication system provides proper lubricant for the guides. Reliable, stable and lower noise.

ball screw of power press

Con rod with ball screw for power press machines

1. Casting con rod, forging steel ball scres

2. Ball screw nitrogen treatment to improve the harness

3. Oil lubrication inside con rod

4. Worm gear sysem working with the ball screw to adjust the ram height

5. Ram adjustment precision 0.1mm with die height indicator


single crank press dimensions

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

Rated Tonnage Point


mm

3

4

4

5

5

6

Slide Strokes

Fixed


spm

100

80

70

60

55

50

Variable (optional)


spm

60-120

50-95

45-85

40-75

35-65

35-60

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

470

525

560

580

670

630

Slide Bottom Size

LR

a

mm

360

400

480

540

620

620

FB

b

mm

250

340

400

460

520

520

Shank Hole Size

Diameter

d

mm

40

50

50

50

70

70

Depth

I

mm

50

60

70

70

80

80

Table Size

LR

C

mm

720

825

930

950

1060

1100

FB

D

mm

400

440

520

600

640

680

Thickness

H3

mm

80

110

130

140

145

155

Table Hole Diameter

¢

mm

150

150

150

180

180

200

Bolster Surface Height

H1

mm

750

775

800

845

850

850

Overall Dimensions

FB

A

mm

1500

1585

1540

1765

2000

2040

LR

B

mm

945

1075

1200

1200

1300

1320

Height

H

mm

2090

2365

2470

2675

2960

2980

Motor Power


KW

3

5.5

5.5

7.5

7.5

11

Air Pressure


Mpa

0.5

0.5

0.5

0.5

0.5

0.5

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

Rated Tonnage Point


mm

6

6

6.5

7

8

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

450

Distance Between Uprights

d1

mm

676

910

980

980

1050

Slide Bottom Size

LR

a

mm

700

880

950

950

1020

FB

b

mm

580

650

700

700

750

Shank Hole Size

Diameter

d

mm

70

70

70

70

70

Depth

I

mm

100

100

100

100

100

Table Size

LR

C

mm

1175

1390

1500

1540

1700

FB

D

mm

760

840

880

880

880

Thickness

H3

mm

165

180

190

190

210

Table Hole Diameter

¢

mm

220

240

240

240

240

Bolster Surface Height

H1

mm

900

1000

1000

1000

1100

Overall Dimensions

FB

A

mm

2305

2600

2660

2720

2850

LR

B

mm

1420

1540

1640

1680

1750

Height

H

mm

3210

3800

3850

3850

4140

Motor Power


KW

15

18.5

22

30

37

Air Pressure


Mpa

0.5

0.5

0.5

0.5

0.5

Weight (approximate)


kg

13600

19200

23200

26600

29500


We provide a lot of optional accessories for press such as following items. Customer can buy all the accessories as a package order and we provide in time delivery and same warranty.

press light barriers

Light Barriers for Safety


press inverter

Inverter for Adjustable Stroke Speeds


press die cushion

Piston Type Die Cushion

press roller feeder

NC Roller Feeder


press QDC system

Die Quick Change Device


press tonnage monitor

Tonnage Monitor


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