C Frame Stroke Adjustable Punching Press Machine

Name: C Frame Stroke Adjustable Punching Press Machine
Brand: WORLD
Rating: 5.0 (67 reviews)

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Product Description

Main features:

1. dry type clutch and brake

2. PLC control

3. Hydraulic overload protection

4. 7 or 9 shifts stroke lengths adjustable, suitable for different type tools

5. Standard equip with safety light barriers and frequency inverter

6. C-frame steel welded structure

7. CE approved

Transmission Instructions:

Motor drives through V belt, friction clutch brake and drive gear to drive crankshaft make rotation. Motor is fastened on to supporting plate with rubber buffer. To have oil bath lubrication for drive gear. A sprocket is at the end of sprocket shaft which is synchronous with crankshaft; it transmits the synchronous of crankshaft to cam controller to send variable control signals to press.

Turn the switch to get air in and push piston, hold down plate and connection eccentric bushing move forward together, to disconnect the pawl of connection eccentric bushing off the pawl of eccentric bushing, to adjust the gear shaft to get the required stroke. Turn the switch to get air out and spring pushes the connection eccentric bushing to reset.

Details of Variable Stroke Press:

Power press stroke length adjusting mechanism

The mechanism is installed in front of the crankshaft, adjustable by manual. Motorized adjustment is optional. There is a hole for operator to check the right stroke length position.

A knob for adjusting the stroke length is located on the press console. When adjusting, the pneumatic cylinder will drive the adjusting shaft out. Use a spanner to adjust the shaft to the wanted position. Turn back the stroke adjusting knob and the shaft will return back to original position.

Technical parameters of variable stroke press machine

				JH21-25L	JH21-45L	JH21-63L	JH21-80L	JH21-110L	JH21-125L	JH21-160L	JH21-200L	JH21-250L
Capacity			kN	250	450	630	800	1100	1250	1600	2000	2500
Nominal Stroke			mm	3	4	4	5	6	6	6	6	8
Slide Stroke			mm	10-110	20-120	10-150	10-150	10-160	10-160	16-160	18-180	21-220
SPM	Fixed		min^-1	100	80	70	60	50	50	40	35	30
SPM	Variable		min^-1	80-120	70-90	60-80	50-70	40-60	40-60	35-50	30-40	25-35
Max. Die Height			mm	250	270	300	320	350	350	350	450	500
Die Height Adjustment			mm	50	60	80	80	80	80	110	110	120
Throat Depth			mm	210	230	300	300	350	350	380	390	420
Between Columns			mm	450	550	620	640	710	760	810	920	960
Bolster		LR	mm	700	810	900	1000	1150	1150	1300	1400	1400
		FB	mm	400	440	580	580	680	680	740	760	800
		Thk	mm	80	110	110	120	140	140	150	160	170
Bolster Opening			mm	φ170×20	φ180×30	φ200×40	φ200×40	φ260×50	φ260×50	φ300×50	φ300×50	φ320×50
(Up Hole Dia.×Dpth×Low Hole Dia.)			mm	×φ150	×φ160	×φ180	×φ180	×φ220	×φ220	×φ260	×φ260	×φ280
Slide Area		LR	mm	360	600	680	710	810	810	920	970	970
Slide Area		FB	mm	300	360	400	440	500	500	580	600	650
Shank Hole		Dia.	mm	φ40	φ40	φ50	φ50	φ60	φ60	φ65	φ65	φ70
Shank Hole		Dpth	mm	60	60	80	80	80	80	85	90	90
Main Motor Power			kW	4	5.5	7.5	7.5	11	11	15	18.5	22
Dimensions		FB	mm	1500	1610	1680	1750	1860	1860	2250	2500	2730
		LR	mm	950	1170	1260	1310	1400	1450	1600	1700	1750
		H	mm	2650	2850	3050	3150	3350	3350	3800	4200	4300
Net Weight			kg	3100	4350	6500	8500	10000	10700	14500	17950	25400

How to Adjust the Stroke Length of a Variable Stroke Press Machine

World brand JH21 (L) series C frame press machine has an eccentric bush system for stroke length adjustment. There are 7-9 stroke shifts for different models. Stroke adjustable press is suitable for one press working with different sizes tools.

Step 1: Turn on the switch of stroke adjustment on the control T stand.

Step 2: Use a wrench to adjust the shaft.

Step 3: Check the stroke shift positions through the hole/window.

Step 4: Turn off the stroke adjustment switch.

Step 5: Run the press