SYJ Series Closed Single Point Precision Punch Press (100-600T)
Optional Items
1. Die protection device
2. Quick die change device (die lifter, die clamp, or die arm)
3. Upper slide knockout device
4. Photoelectric safety device
5. Die lighting lamp
6. Automatic feeding device (feeder, material rack, straightener)
7. Pre-cut and pre-shear counter
8. Foot switch
Product Description
Closed Type Single Crank Pneumatic Punch Press adopts H-frame / straight-side closed welded structure, single crankshaft drive, and pneumatic clutch-brake system. It features high rigidity, stable operation, strong anti-deflection load, and long-term precision retention. Ideal for punching, blanking, bending, forming, shallow drawing, and coining of medium & thick metal sheets.
Details
> The machine body is made of high-quality steel plates, designed with high precision and high strength, and stress relieved after welding, ensuring stable precision and reliable performance.
> The die adjustment accuracy reaches 0.1mm, making it safe, convenient, and reliable.
> The machine structure is designed reasonably, with complete configurations, facilitating automated production and assembly line manufacturing.
> It features a high-strength combined clutch/brake, ensuring smooth engagement and reliable safety.
> The machine uses high-grade alloy steel and a single crankshaft with an optimized design, making it highly suitable for large-sized, high-load die stamping.
> The enclosed electrical circuit design is powerful and can be paired with any automation equipment.

Specification
| Specification | Unit | SYJ-100 | SYJ-150 | SYJ-200 | SYJ-260 | SYJ-300 | SYJ-400 | SYJ-500 | SYJ-600 | ||||||||
| Model | V | H | V | H | V | H | V | H | V | H | V | H | V | H | V | H | |
| Capacity | Ton | 100 | 150 | 200 | 260 | 300 | 400 | 500 | 600 | ||||||||
| Rated Tonnage point | mm | 6 | 3 | 6.5 | 4 | 7 | 4 | 7 | 4 | 9 | 7 | 10 | 7 | 13 | 7 | 13 | 7 |
| Stroke | m m | 180 | 40 | 200 | 40 | 250 | 40 | 250 | 40 | 300 | 250 | 300 | 200 | 350 | 250 | 350 | 250 |
| Stroke Per Minute | s.p.m | 20-45 | 80-180 | 20-40 | 80-150 | 20-40 | 60-130 | 20-40 | 50-110 | 20-35 | 20-35 | 20-30 | 25-35 | 15-25 | 20-30 | 10-20 | 20-30 |
| Die Height | mm | 450 | 290 | 500 | 310 | 550 | 350 | 550 | 380 | 650 | 550 | 550 | 600 | 600 | 650 | 650 | 700 |
| Slide Adjustment | mm | 100 | 120 | 150 | 150 | 150 | 150 | 150 | 150 | ||||||||
| Slide Area | m m | 700x600 | 700x700 | 800x800 | 900x800 | 1000x900 | 1000x1050 | 1250x1100 | 1400x1200 | ||||||||
| BolsterArea | mm | 700x700 | 800x700 | 900x900 | 900x900 | 1100x1000 | 1300x1100 | 1450x1100 | 1600x1200 | ||||||||
| Shank Hole | m m | 400x400 | 400x400 | 400x400 | 400x400 | 400x500 | 650x550 | 650x600 | 700x650 | ||||||||
| Main Motor | kw.p | 15x4 | 22x4 | 22x4 | 30x4 | 30x4 | 45x4 | 55x4 | 75x4 | ||||||||
| Air Pressure | kg/cm² | 6 | |||||||||||||||
| Presses Precision | GB/JlS 1class | ||||||||||||||||
Standard Configuration
> Hydraulic overload protection device
> Electric slide adjustment device
> Motorized die height indicator
> Slide and die balance device
> Pneumatic air source connection
> Double safety protection device
> Main motor reverse rotation device
> Variable frequency drive
> Electronic cam
> Crankshaft angle indicator
> Pneumatic air blowing device
> Maintenance tools and toolbox
> Mechanical anti-vibration feet
> Misfeed detection device
> Imported oil-collecting muffler
> Touch screen control device
> Motorized grease lubrication device

Applicable Materials
Our closed type single crank pneumatic punch press is suitable for:Carbon steel sheet & coil, Stainless steel sheet, Aluminum alloy sheet, Copper & brass sheet, Galvanized steel sheet, Cold-rolled steel sheet, ect.
Application Cases
Automotive Parts Stamping
Stamping of automotive brackets, clips, chassis parts, reinforcement plates. High rigidity ensures stable precision for mass production, meets automotive industry consistency requirements.
Motor Core & Transformer Lamination
High precision stamping of silicon steel sheets. Closed structure reduces vibration, ensures lamination stacking accuracy and motor performance.
Home Appliance Structural Parts
Stamping of shells, panels, bases for air conditioners, refrigerators, washing machines. Supports large-size dies and long progressive dies.
Hardware & Fastener Forming
High-speed and high-precision stamping of hinges, locks, fasteners, and hardware fittings. Stable operation improves yield and reduces cost.
Electrical & Electronic Components
Stamping of terminals, connectors, shielding cases, and relay brackets. Closed design ensures small parts precision and surface quality.

Matching Equipment
To build a full automatic stamping line, the press can be equipped with:
Stamping Dies: Progressive die, blanking die, bending die, drawing die, compound die
Feeding Equipment: NC servo feeder, pneumatic feeder, 3 in 1 uncoiler straightener feeder, 2 in 1 decoiler with straightener
Uncoiling Equipment: Decoiler (uncoiler), hydraulic decoiler
Leveling Equipment: Sheet metal leveler, coil straightening machine
Automation Devices: Robot arm, conveyor belt, finished product collector
Safety Devices: Safety light curtain, protective cover, emergency stop system
Auxiliary Units: Die change cart, centralized oil lubrication system

FAQs
Q1: What is the advantage of closed type single crank press over C-frame press?
A: Closed frame has higher rigidity, no opening deformation, stronger anti-eccentric load, better for large dies and precision parts, longer die life.
Q2: Can this press run fully automatic?
A: Yes. It can work with decoiler, leveler, servo feeder to form a fully automatic stamping line.
Q3: Can you customize tonnage, stroke or voltage?
A: Yes. We customize tonnage, stroke, die height, voltage (220V/380V/415V/480V) and control system.
Q4: Do you provide after-sales service?
A: Yes. We offer overseas installation, commissioning, training, and long-term spare parts supply.



