J21S Power Press Machine

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The J21S power press machine features a steel plate welding bed that has an outstanding vibration absorption. The throat features a certain depth and compact structure to ensure a safe operation.

J21S-40T
J21S-125T

Parameters

Parameter name		J21S-40T	J21S-125T
Nominal pressure kn		400	1250
Nominal working stroke mm		6	10
Slide stroke mm		100	140
Slider stroke number t/min		55	45
Maximum shut height mm		320	400
Closed height regulation mm		80	100
Distance from the centerline of the slider to the bed mm		500	500
Table size	Length mm	400	660
Table size	Width mm	650	980
Worktable blanking hole size	Length mm	170	260
	Width mm	240	400
	Diameter mm	160	210
Total dimensions of slider bottom	Length mm	220	360
Total dimensions of slider bottom	Width mm	300	480
Die handle bore	Diameter mm	50	70
Die handle bore	Depth mm	70	90
The distance between two columns of the machine body mm		260	370
Net distance between worktable and track mm		340	430
Pad thickness mm		80	110
Motor	Power kw	4	11
Motor	Speed r/min	1440	1460
Size of shape	Length mm	1800	2200
	Width mm	1100	1500
	Height mm	2400	2800

Component description

The main components of the press include the following: Machine body, Transmission, Clutch, Slider, Brake, Control mechanism.

Machine body

The machine body is a cast component of the c-shaped open double column. The workbench has a rectangular hole in the center to allow finished work pieces or scraps to fall through.
Transmission

The transmission system is powered using a motor mounted on the back of the fuselage.
Clutch

The clutch member is positioned at the right end of the crankshaft. The clutch key is a semicircle key that relies on a pull spring in order to be placed into a regular open state.
Slider

The slider is located between the fuselage guideway. The slider moves straight up and down in the V-groove of the guide rail using the crankshaft rotary motion.
Brake

The brake wheel is circular and attached on the left end of the crankshaft. It is a continuous brake, with the belt made using a soft steel leather, or internal riveted copper asbestos brake tape.
Control mechanism

This machine uses a mechanical manipulation mechanism to control the slider for single punching with a foot lever.