JH21 C Frame Single Crank Power Press

Benefits & Features

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

World precise machinery produces 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.

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.

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

Technical Parameters

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
Slide Strokes	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
Slide Bottom Size	FB	b	mm	250	340	400	460	520	520
Shank Hole Size	Diameter	d	mm	50	50	50	50	N/A	N/A
Shank Hole Size	Depth	I	mm	50	60	70	70	N/A	N/A
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 (w/o pads)		H1	mm	750	775	800	845	850	850
Overall Dimensions	FB	A	mm	1500	1540	1585	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	2300	3350	4800	5550	7500	8700

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
Slide Strokes	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	696	910	980	980	1050
Slide Bottom Size	LR	a	mm	700	880	900	900	1020
Slide Bottom Size	FB	b	mm	580	650	700	700	750
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 (w/o pads)		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	4585
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	12200	18500	22800	25600	29100

Optional Accessories

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.

Light Barriers for Safety

Inverter for Adjustable Stroke Speeds

Piston Type Die Cushion

NC Roller Feeder

Die Quick Change Device

Tonnage Monitor