J21 Series Deep Throat Hole Punching Press Machine and Power Press Machine

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Products Description

Main Features:

1. J21 series Open Eccentric Presses is a general-purpose presses, suitable for forming, blanking, punching, bending and other cold stamping process.
2. C-frame Casting fuselage,maximum rigidity and minimum deflection for accurate parts and long tool life. body can be tilted, , high rigidity and less deformation Compact. Thick plates and large columns provide you with the stable platform you need for your demanding application.
3. The Machine use Rigid rotated bond clutch rigid and well supported. The clutch gives continuous strokes for mass production.
4. Crank shaft is made of special alloy steel machined to close accuracy and fitted in bronze bushes for smooth working, longer life & accuracy.
5. Properly sized flywheel, is made of high grade cast iron, for storing and releasing adequate energy for the pressing operations, and properly balanced for smooth running.
6. Gear are of steel cast or fabricated. Gear teeth are generated by precision hobbing machine.
7. Machine is with both hands button and foot switch control: anti-tie down, non-repeat controls with ring guards; conforms to OSHA.
8. Protective fence and the safety interlock to ensure the operation safety. Have a movable single-hand pedal switch,easy to operate.

Size Information

Specifications
Unit
JH21-25
JH21-45
Type
H
S
H
S
Nominal force
KN
250
450
Nominal Stroke
mm
3
3
4
4
Slide Stroke
mm
50
80
70
120
Slide Strokes Per Minute
Fixed
min-1
125
100
95
80
Variable
75-150
60-120
65-115
50-95
Maximum Die Set Height
mm
265
250
295
270
Die Height Adjustment
mm
50
60
Between slide center and frame
mm
210
225
Columns Distance
mm
450
515
Bottom size of slide
L×R
mm
360
400
F×B
mm
250
340
Shank Hole Size
Dia
mm
40
50
Depth
mm
50
60
Bolster size
L×R
mm
720
825
F×B
mm
400
440
Blanking Hole Diameter
mm
150
150
Bolster Thickness
mm
80
110
Bolster Surface Height
mm
780
800
Overall Dimensions
F×B
mm
1500
1585
L×R
mm
945
1075
H
mm
2120
2390
Distance Between Foundation Bolts
F×B
mm
980
1075
L×R
mm
690
760
Motor
Power
Kw
3
5.5
Weight（Approximate)
Kg
2450
3550
Press Pressure
Mpa
0.5
0.5
0.5
0.5

Machine Details

Standard accessories:                                                                                  Optional accessories:
1) Wet clutch                                                                                                      1) Dry clutch
2) Hydraulic overload protecting pump                                                      2) Pneumatic die cushion apparatus
3) Auto lubrication system                                                                             3) Light curtain
4) Manual lubrication system                                                                       4) Die quick change device
5) Hydraulic overload protecting pump                                                      5) Foot pedal
6) Joint for miss-feeding                                                                                6) Automatic feeding the output shaft
7) Touch screen                                                                                                7) Speed motor, frequency control
8) Electronic crankshaft angle indicator
9) Cam controller
10) Die height adjusted motor (JH21-100~400)
11) PLC: Programmable logical controller
12) Knock out device
13) Air source quick connector
14)Absorbing pads
15) Working lamp
16) Air blowing
17) Second degree drop
18) Preset counter

 

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