JH21 Series C-frame Fixed Bolster Press

Features: JH21 Series pneumatic press machine adopted Japanese technology wet clutch is featured of stable working performance, high production efficiency, low noise, and less maintenance cost. Equipped with Japan SHOWA hydraulic overload protection pump ensuring longer service life. Its the most practical and mature small size press machine in the stamping field in recent years. Highly recommended for production of metal pieces.

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Description

World Press has invested huge amount for the most advanced production equipment from all over the world. including 12 sets of Italy PAMA CNC boring and milling machine, German Gleason grinding machine, German Liebherr gear hobber, Japan TOSHIBA CNC machining center, etc.
With powerful productivity and excellent production equipment, more than 85% mechanical parts are self-produced by World Press for JH21 Series C type press machine.
From structure buidling to final assembling, JH21 is followed in the highest Japanese JIS1 standard. Compact structure and high-graded configuration ensure reliable working performance and long service life.

Features:

Steel welded body, tempering treatment or VSR(Vibratory Stress Relief), high rigidity, accuracy and stability.
Pneumatic dual balance cylinders, which balance the slide and punch weight to reduce noise and impact.
The crankshaft undergoes gringding treatment after high frequency quenching.
Lengthened six-face rectangle guide with a surface of bronze plate.
Vertical located crankshaft, compact structure.
PLC control and imported safety duplex valve.
Wet type combined multi discs friction clutch and brake.
Hydraulic onerload protected.

Main Technical Specifications：

Parameter		Unit	JH21-25	JH21-45	JH21-60	JH21-80
Nominal Capacity		KN	250	450	600	800
Nominal Stroke		mm	3	4	4	5
Slide Stroke Length		mm	80	120	140	160
Slide Strokes Per Minute	Fixed	times/min	100	80	70	60
Slide Strokes Per Minute	Variable	times/min	60-120	50-95	45-85	40-75
Max Die Set Height		mm	250	270	300	320
Die Height Adjustment		mm	50	60	70	80
Throat Depth		mm	210	225	270	310
Distance Between Uprights		mm	450	515	560	610
Slide Bottom Size	L x R	mm	360	400	480	540
Slide Bottom Size	F x B	mm	250	340	400	460
Shank Hole Size	Dia	mm	40	50	50	50
Shank Hole Size	Depth	mm	50	60	70	70
Bolster Size	L x R	mm	720	825	930	950
Bolster Size	F x B	mm	400	440	520	600
Bolster Thickness		mm	80	110	130	140
Blanking Hole Diameter		mm	150	150	150	180
Bolster Surface Height		mm	780	800	900	900
Overall Size	F x B	mm	1500	1585	1540	1765
	L x R	mm	945	1075	1200	1200
	H	mm	2120	2391	2570	2725
Distance Between Foundation Bolts	F x B	mm	980	1075	1100	1210
Distance Between Foundation Bolts	L x R	mm	690	760	840	920
Motor	Power	Kw	3	5.5	5.5	7.5
Weight(Approximate)		Kg	2450	3550	5150	6450
Press Pressure		Mpa	0.5

Parameter		Unit	JH21-100	JH21-125	JH21-160	JH21-200
Nominal Capacity		KN	1000	1250	1600	2000
Nominal Stroke		mm	5	6	6	6
Slide Stroke Length		mm	160	180	200	220
Slide Strokes Per Minute	Fixed	times/min	55	50	45	45
Slide Strokes Per Minute	Variable	times/min	35-65	35-60	30-55	30-55
Max Die Set Height		mm	335	350	400	450
Die Height Adjustment		mm	90	90	100	110
Throat Depth		mm	330	350	400	430
Distance Between Uprights		mm	670	670	736	910
Slide Bottom Size	L x R	mm	620	620	700	880
Slide Bottom Size	F x B	mm	520	520	580	650
Shank Hole Size	Dia	mm	70	70	70	70
Shank Hole Size	Depth	mm	80	80	100	100
Bolster Size	L x R	mm	1060	1100	1175	1390
Bolster Size	F x B	mm	640	680	760	840
Bolster Thickness		mm	145	155	165	180
Blanking Hole Diameter		mm	180	200	220	250
Bolster Surface Height		mm	900	900	900	1000
Overall Size	F x B	mm	2000	2040	2305	2600
	L x R	mm	1300	1320	1420	1540
	H	mm	3010	3035	3215	3800
Distance Between Foundation Bolts	F x B	mm	1365	1430	1665	2020
Distance Between Foundation Bolts	L x R	mm	1020	1040	1140	1360
Motor	Power	Kw	7.5	11	15	18.5
Weight(Approximate)		Kg	8650	9550	13600	19200
Press Pressure		Mpa	0.5

Parameter		Unit	JH21-250	JH21-315	JH21-400
Nominal Capacity		KN	2500	3150	4000
Nominal Stroke		mm	6.5	7	8
Slide Stroke Length		mm	220	220	250
Slide Strokes Per Minute	Fixed	times/min	30	30	30
Slide Strokes Per Minute	Variable	times/min	20-35	20-35	20-35
Max Die Set Height		mm	500	500	550
Die Height Adjustment		mm	120	120	120
Throat Depth		mm	450	450	490
Distance Between Uprights		mm	980	980	1050
Slide Bottom Size	L x R	mm	950	950	1020
Slide Bottom Size	F x B	mm	700	700	750
Shank Hole Size	Dia	mm	70	70	70
Shank Hole Size	Depth	mm	130	130	130
Bolster Size	L x R	mm	1500	1540	1700
Bolster Size	F x B	mm	880	880	950
Bolster Thickness		mm	190	190	210
Blanking Hole Diameter		mm	240	240	240
Bolster Surface Height		mm	1000	1000	1100
Overall Size	F x B	mm	2660	2720	2850
	L x R	mm	1640	1680	1750
	H	mm	3850	3850	4140
Distance Between Foundation Bolts	F x B	mm	2100	2140	2185
Distance Between Foundation Bolts	L x R	mm	1460	1500	1570
Motor	Power	Kw	22	30	37
Weight(Approximate)		Kg	23200	26600	29500
Press Pressure		Mpa	0.5