C Type Mechanical Stamping Punching Power Press Machine

Product Description

Application: C-Type Mechanical Stamping Press

The JH21 C-type mechanical stamping press is a versatile and widely used machine in metalworking industries, featuring a open-frame design that allows easy three-sided access to the work area, facilitating quick material loading and tooling changes for efficient production. Its robust mechanical drive system ensures high-speed precision in stamping, punching, and forming operations, making it ideal for automotive applications where it produces components like brackets, clips, and chassis parts with strict dimensional accuracy. Additionally, it excels in electronics manufacturing for fabricating intricate connectors and terminals, as well as in consumer goods production for mass-customizing items such as hardware and appliances. The press's compact yet durable structure, combined with reliable force delivery, enables cost-effective high-volume output while maintaining operational safety and flexibility across diverse industrial sectors.

Product Description

Press Key Features

1. Heavy-Duty Steel Welded Frame
Constructed with high-grade steel and tempered for maximum rigidity, ensuring long-term dimensional accuracy and operational stability under high loads.
2. Cross-Located Crankshaft Design
Optimized cross-positioning of crankshaft minimizes footprint while maintaining structural integrity, ideal for space-constrained production environments.
3. Precision-Ground & Heat-Treated Crankshaft
Undergoes high-frequency quenching followed by precision grinding for enhanced wear resistance, smooth operation, and extended service life.
4. Bronze-Lined Extended Rectangular Guideway
Features an extended guideway with bronze-plates for reduces friction, improved wear resistance, and consistent precison over prolonged use.
5. Pneumatic Dual Balance Cylinder System
Counterbalances the slide block and die weight through pneumatic cylinders, significantly reducing noise and vibriation during operation.
6. Advanced PLC Control with Safety Dual Valve
Equipped with programmable logic control (PLC) and a stable safety dual valve for precise operation, automation compatibility, and fail-safe protection.
7. Wet Clutch & Hydraulic Overload Protection
Wet clutch ensures smooth engagement, while the hydraulic overload protector automatically disables operation in case of excessive force, safeguarding both machine and dies.
8. CE Ceritified & Global Compliance 
Meets stringent CE safety standards and is designed to comply with international regulations of risk-free operation in diverse markets.

Standard Equipment 

Optional Accessories

1. PLC
2. Pneumatic clutch and brake
3. Dual-safety valve for clutch
4. HMI with touch screen (english version)
5. Overload protection system
6. Grease lubrication system
7. Over-run safety device
8. Slide counterweight balance cylinder
9. Slide height adjust motor
10. Die height digital indicator (0.01mm)
11. Electric cabinet with high quality elements
12. Mis-feeding protection input
13. Rotary encoder with cam controller 
14. Automation user cams
15. Anti-vibration pads

1. Safety light barriers
2. Motor speed drive (frequency inverter)
3. Die cushion
4. Tonnage monitor
5. Thin-oil lubrication system
6. Die quick change device
7. Servo NC feeder with uncoiler
8. Swing-arm Manipulator
9. Physical safety fence
10. Die safety block
11. 3-in-1 Compact straightener feeder
12. 3-axis transfer bars
13. Elbow-joint 6-axis robot arm
14. Foot pedal
15. Slide knock-out device

Specification

Model	JH21-25	JH21-45	JH21-60	JH21-80	JH21-100	JH21-125
Capacity	25T	45T	60T	80T	100T	125T
Stroke Length	80mm	120mm	140mm	160mm	160mm	180mm
Stroke Speeds	60-120spm	50-95spm	45-85spm	40-75spm	35-65spm	35-60spm
Max. Die Shut Height	250mm	270mm	300mm	320mm	335mm	350mm
Slide Adjustment	50mm	60mm	70mm	80mm	90mm	90mm
Bolster Size	720x400mm	825x400mm	930x520mm	950x600mm	1060x640mm	1100x680mm
Slide Plate Size	360x250mm	400x340mm	480x400mm	540x460mm	620x520mm	620x520mm
Motor Power	3kW	5.5kW	5.5kW	7.5kW	7.5kW	11kW
Weight	2350KG	3500KG	4500KG	5500KG	7000KG	7800KG

Model	JH21-160	JH21-200	JH21-250	JH21-315	JH21-400
Capacity	160T	200T	250T	315T	400T
Stroke Length	200mm	200mm	220mm	220mm	250mm
Stroke Speeds	30-55spm	30-55spm	25-40spm	25-40spm	20-35spm
Max. Die Shut Height	400mm	450mm	500mm	500mm	550mm
Slide Adjustment	100mm	110mm	120mm	120mm	120mm
Bolster Size	1175x760mm	1390x840mm	1500x880mm	1540x880mm	1700x880mm
Slide Plate Size	700x580mm	880x650mm	900x700mm	900x700mm	1020x750mm
Motor Power	15kW	18.5kW	22kW	30kW	37kW
Weight	11400KG	18000KG	22000KG	23500KG	26900KG

Detail Photos

Pneumatic Clutch and Brake

Dual-Safety Valve

Combined pneumatic clutch and brake. All friciton discs are immersed inside the flywheel. Better lubrication. Lower temperature. Lower noise. Easier manitenance. Lower wearing of friction discs. Longer service life. No waster dust outside. Cleaner for working environment and stamping parts. Replace the oil annually for maintenance.

The ‌dual-safety solenoid valve‌ is a critical component in clutch control systems, designed to enhance operational reliability and fail-safe protection. This valve integrates a ‌double parallel flow architecture‌ (with optional cross flow configuration), ensuring uninterrupted functionality even if one valve fails.

Bull Gear

Crankshaft

Gear ring is forged steel with high hardness. Gear teeth are grinding for higher precision and lower noise. Flange is iron casting.

42CrMo forged steel, netrogen treatment for hardness. CNC milling and rolling of the surface.

Slide

Ball Screw

Bolster

Iron-casting slide, rectangular guide rails, with lengthened bronze plates, high precision.

Ball-screw for slide adjust, netrogen treament. Smooth adjustment of die height.

Iron-casting bolster, surface grinding. T-slots and blanking hole can be custom.

Overload Protection Pump

Motorized Grease Pump

Cam Controller

This pneumatic pump can pump hydraulic oil into the slide. It will stop the press if overload to protect the crankshaft and the stamping dies.

Motorized grease pump, pump the grease to lubricant points with a distributor. Lubricant frequency can be programmed on the HMI.

Cam controller with rotary encoder. Transmit the signals of PLC. Automation I/O available. Cam starts and ends angles can be adjusted.

Packing & Delivery

Package with Steel Pallet

The press lies down on a specific steel palllet. The pallet is fixed on the press with bolts and nuts. There are sling holes on the press body for crane lifting. Press is covered with water-proof cover.
 
Plywood box package is optional. Press can be loaded in container (20GP general container for 25t, 45T, 60T, 80T, 100T, 125T. 40HQ container for 160T, 200T. 20FT open top container for 250T, 315T. 20FT flat rack for 400T press.

Delivery time: Standard press 30-45 days. Custom press 60 days.
 
Incoterms: EXW/FOB/CFR/CIF

After Sales Service

Warranty

Technical Support

One-year Warranty.
Free parts within warranty.
Online service support.
Dispacting engineer available.

Maintenance support availabe.
Repair service available.
Spare parts available.
Upgrade press and automation support available.

Company Profile

Top Rank Press Machines Manufacturer in China

We produce 80% critical parts of press machines in the factories. There are two basic manufacturing hubs in China. One is in Jiangsu Province, the other is in North of China (Shenyang City). The original plant was built in 1953, to produce conventional eccentric mechanical presses. We started to produce high perfomance pneumatic presses since 1998. The production capacity is more than 200 units presses per month.

Our products range:

- JX36 close type big table press with double crank, capacity from 400ton to 1000ton.
- JS36 close type gear press, capacity from 300ton to 1250ton.
- JS31 close type gear press, capacity from 160ton to 1000ton.
-  hydraulic shearing machine
-  hydraulic press brake and cnc press brake