EMH21 Series C-frame Fixed Bolster Pneumatic Presses

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Features
1. The EMH21 series C-frame fixed bolster pneumatic press is constructed by steel plates via welding. After processed with tempering (or vibration aging) and shot blasting, it has remarkable strength and stable precision.
2. With compact structure, this product is equipped with a longitudinally positioned crank shaft high frequency quenched and ground with fine smoothness, brightness and flexibility. The rectangular guide rail is lengthened in six sides and the oriented side is veneered with bronze plates, featuring high-precision orientation.
3. The pneumatic dual balance cylinders are very helpful for the equilibration of slider and upper die. Meanwhile, they facilitate to reduce the impact and noise, eliminate the clearance between the connecting rod and the slider and avoid the stressed parts from impacts and abrasion.
4. The EMH21 series C-frame fixed bolster pneumatic press adopts the PLC system for centralized control. The gas circuit is controlled by the imported safe double valves, capable of inching, single-time and continuous punching.
5. The key components like the slider, guide rail, bolster, connecting rod and the female connector are made from the resin sand instead of the ordinary clay sand, so 1 to 2 grade of surface roughness and 2 to 3 grade of dimensional accuracy are improved.
6. The die setting height of EMH21-60 and the models of heavier than EMH21-60 are electrically adjusted. These products are provided with superior configurations and the key parts as the pneumatic element, electric element, sealing element and the button are imported from well-known brands.
7. The combined dry pneumatic friction clutch and the hydraulic overload protection device are applied.
8. The EMH21 series C-frame fixed bolster pneumatic press is optionally configured with the photoelectric protection device and also can be cooperated with various kinds of automation equipment.

EMH21 Series C-frame Fixed Bolster Pneumatic Presses

Technical Parameters

Item	Symbol	Unit	EMH21-25	EMH21-45	EMH21-60	EMH21-80	EMH21-125
Nominal pressure of slider	Pe	KN	250	450	600	800	1250
Nominal stroke	Sp	mm	3	4	4	5	6
Slider stroke	S	mm	80	120	140	160	180
Stroke No.	Fixed	n	times/min.	100	80	70	60
Stroke No.	Changeable		times/min.	60-100	50-80	45-70	40-60
Die height	H2	mm	250	270	300	320	350
Die height adjustment	t	mm	50	60	70	80	90
Throat depth	C1	mm	210	225	270	310	350
Distance between columns	d1	mm	450	515	560	610	670
Slide bottom size	L×R	a	mm	360	410	480	540
Slide bottom size	F×B	b	mm	250	340	400	460
Shank hole size	Diameter	d	mm	40	50	50	50
Shank hole size	Depth	i	mm	65	60	70	65
Bolster size	L×R	C	mm	720	825	930	950
Bolster size	F×B	D	mm	400	440	520	600
Bed opening diameter	φ	mm	150	150	150	180	200
Thickness of bolster	H3	mm	80	110	130	140	155
Bolster surface height	H1	mm	780	800	900	900	900
Overall dimension	L×R	A	mm	1496	1585	1540	1765
	F×B	B	mm	945	1075	1200	1200
	Height	H	mm	2120	2391	2570	2725
Foundation bolt distance	L×R	a′	mm	980	1075	1100	1210
Foundation bolt distance	F×B	b′	mm	690	760	840	920
Motor	Model		Y100L2-4	Y132S-4	Y132S-4	Y132M-4	Y160M-4
Motor	Power	KW	3	5.5	5.5	7.5	11
Weight		kg	2450	3550	5150	6450	9550

Item	Symbol	Unit	EMH21-160	EMH21-200	EMH21-250	EMH21-315	EMH21-400
Nominal pressure of slider	Pe	KN	1600	2000	2500	3150	4000
Nominal stroke	Sp	mm	6	6	6	7	8
Slider stroke	S	mm	200	250	250	250	270
Stroke No.	Fixed	n	times/min.	45	45	30	30
Stroke No.	Changeable		times/min.	30-45	25-45	20-30	20-30
Maximum die height	H2	mm	400	450	500	500	550
Die height adjustment	t	mm	100	110	120	120	120
Throat depth	C1	mm	400	430	450	450	490
Distance between columns	d1	mm	736	910	980	980	1050
Slide bottom size	L×R	a	mm	700	880	950	950
Slide bottom size	F×B	b	mm	580	650	700	700
Shank hole size	Diameter	d	mm	70	70	70	70
Shank hole size	Depth	i	mm	100	100	130	130
Bolster size	L×R	C	mm	1170	1390	1500	1540
Bolster size	F×B	D	mm	760	840	880	880
Bed opening diameter	φ	mm	180	200	200	200	200
Thickness of bolster	H3	mm	165	180	190	190	210
Bolster surface height	H1	mm	900	1000	1000	1000	1100
Overall dimension	F×B	A	mm	2305	2600	2660	2720
	L×R	B	mm	1420	1540	1640	1680
	Height	H	mm	3215	3800	3865	3865
Foundation bolt distance	F×B	a′	mm	1665	2020	2100	2140
Foundation bolt distance	L×R	b′	mm	1140	1360	1460	1500
Motor	Model		Y160L-4	Y180M-4	Y200L2-6	Y225M-6	Y250M-6
Motor	Power	KW	15	18.5	22	30	37
Weight		kg	13600	19200	23200	26600	31600

Related Names
Metal Plate Press Machine | Stamping Press Equipment | Metalworking Punch Press

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