315 Ton Two Point Double Crank C Frame Punch Press Standard Dual Air Cushion

This is 315ton open double point crank punching machine, meet Japanese JIS 1 class standard--Safety, Engery saving, Stable, Automation, High precision.

• 1. One year warranty for whole pressmachine.
• 2. All spare parts are available as most of the parts produced by our factory.
• 3. It is easy to get the electric parts as all are international famous brands.
• 4. We can provide technical training and consulting via email, phone or video.
• 5. We can send out engineers for service, installation or training with reasonable additional cost.
• 6. English operation and maintenance manual is provided with the press.
• 7. Certificate of conformity will be sent with press

• who are we?
  A: Our factory is located in Wuxi, China with a branch company in Dongguan , start from 2016 sell to Southeast Asia(50.00%), Mid East(30.00%), Africa(10.00%),South Asia(5.00%),Northern Europe(4.00%),Eastern Europe(1.00%). There are total about 51-100 people in our office.
• why select us?
  A: We are high end quality punching machine manufacturer and we promise customers will never regret if they choose our brand.
• How about your delivery time?
  A: Usually it takes about 25 to 40 working days after receiving your advance payment.
• Do you provide after-sale service?
  A: Our technical and quality team will support you any time if you need us.
• Can i do different color machine?
  A: Yes, we can customize your own colors to match your production line
• Can the touch screen board language change to others
  A: Yes, we can do it according to your requirement like Spanish, French ect...

• STC Series: Open C-frame two-point double crank punch press, wide three-side feeding space, ultra-wide worktable for large molds & progressive dies
• Number (110/160/200/250/315): Nominal stamping force in tons, heavy open-frame tonnage range 110–315Ton
• SV Suffix (STC-SV): Full servo drive version, programmable stamping curve, energy-saving intelligent forming

Extra-thick steel plate integral welding with secondary high-temperature annealing to eliminate internal stress. Reinforced rib structure greatly suppresses frame deflection under heavy eccentric load, rigidity far superior to single-crank ST series. Three-side full open design supports front/left/right multi-direction feeding, compatible with heavy uncoilers, thick plate straighteners and wide servo feeders.

Large box-type slide adopts two-point symmetric force structure + six-sided fully quenched precision ground guide rails with micro clearance fit. Dual large balance cylinders eliminate heavy stamping vibration, avoid slide lateral offset during long-stroke forming, keep consistent dimensional accuracy and extend service life of large progressive dies.

Twin synchronous crankshafts forged from high-strength 42CrMo alloy steel with overall carburizing & precision grinding, tensile strength 1.3 times higher than ordinary carbon steel. All gear tooth surfaces medium-frequency quenched for high load resistance and low abrasion. Wear-resistant tin-phosphor bronze ZQSn10-1 copper sleeves bear long-term heavy load without easy damage. Double crank design evenly distributes eccentric stamping force, single component fatigue stress reduced significantly.

Large-diameter low-inertia dry friction clutch equipped with dual imported solenoid safety interlock valves, braking response within 70ms with anti-secondary slide drop protection. Stable continuous output under long-hour heavy mass production. Three standard operation modes: inch jog, single stroke, continuous stroke.

Large industrial touch screen real-time displays stroke frequency, die height, production counter, fault alarm and running status. Stamping speed, dwell holding time and batch count freely adjustable, supports parameter one-click copy and seamless linkage with automatic transfer lines. STC-SV servo version built-in 9 sets of programmable motion curves for customized forming process.

Large-flow built-in hydraulic pressure relief assembly. Automatically releases pressure and triggers emergency stop under overload (over-thick sheet, stuck mold), effectively protect dual crankshaft, gears and large forming molds from impact fracture.

Standard multi-beam safety light curtain, mushroom emergency stop button, two-hand safety operation mode, overload auto alarm & machine lock function. All safety components fully comply with CE and JIS Class 1 mechanical safety standards. Standard Japan SMC air filter regulator, sealing parts.

Dual separated air cushions equipped as standard for all STC models, uniform full-table blank holder force to eliminate wrinkling during medium & deep drawing and heavy bending, no extra procurement cost for forming processes.

• Nominal Force Range: 110Ton ~ 315Ton (1100kN ~ 3150kN)
• Applicable Material Thickness: 1–8mm cold rolled steel, galvanized steel, SUS stainless steel, copper, aluminum alloy
• Standard Slide Stroke: 180mm long stroke for deep bending & medium drawing
• Adjustable Stroke Rate: 28–65 SPM
• Max Die Height Adjustment: 400mm
• Standard Dual Air Cushion Force / Stroke: 3.6Ton * 2 / 80mm
• Precision Standard: JIS Class 1 heavy-duty stamping press standard
• Working Air Pressure Requirement: 5–6kg/cm²

Designed for heavy blanking, thick plate deep bending, flanging, embossing, medium deep drawing and multi-station progressive die mass production of large & medium metal hardware:

• Auto structural parts: chassis brackets, reinforcement plates, interior metal frames, large body accessories
• Home appliance hardware: refrigerator/air conditioner/washing machine large shell, structural support frames
• New energy components: lithium battery large brackets, power distribution cabinet thick shells, energy storage structural parts
• Construction & heavy hardware: thick plate hinges, large lock fittings, electrical cabinet panels, agricultural machinery sheet metal

Applicable industries: Automotive stamping parts, home appliance sheet metal, new energy lithium battery structural components, electrical equipment hardware, construction heavy hardware, agricultural machinery metal processing.

1. Two-point double crank symmetrical force transmission: Evenly share eccentric stamping load, frame deflection far lower than single-crank ST series, stable precision for large progressive dies long-term mass production.
2. Ultra-wide integrated worktable & long 180mm standard stroke: Process oversized single parts and realize deep bending/medium deep drawing unavailable on small tonnage single crank presses.
3. Dual independent air cushions as standard: No extra cost for drawing & bending procedures, balanced blank holder force across full worktable to avoid uneven forming and wrinkling.
4. Three-side multi-direction open feeding: More flexible for wide coil sheets and manual large plate loading compared with closed STE series double crank presses, lower overall investment cost.
5. Two-point six-sided hardened slide guide + dual balance cylinders: Ultra-low vibration under full nominal load, greatly reduce large mold abrasion and lower mold replacement expense.
6. Full STC-SV servo optional upgrade: 9 programmable stamping curves, save 30%–50% power consumption, low noise & low vibration for high-precision complex forming.

Minor Disadvantages: Not suitable for plates thicker than 8mm or ultra-heavy deep drawing requiring ultra-high frame rigidity; select STE closed double crank series for over 8mm thick sheets and heavy forming demands. Slower stroke speed than small single-crank ST models, targeted for heavy thick plate processing instead of ultra-thin high-speed stamping.

1. Medium & large hardware factories processing 1–8mm thick metal sheets for auto, home appliance and new energy structural components
2. Manufacturers running long multi-station progressive die automatic coil feeding production lines with large mold size requirements
3. Factories with medium deep drawing & deep bending mass production demands, unwilling to pay extra for air cushion accessories
4. Enterprises preferring open multi-direction feeding layout instead of high-cost closed double crank STE presses
5. Production plants with heavy thick plate blanking & forming orders, pursuing long-term stable dimensional precision and low mold loss

1. Mount large upper progressive mold on slide and fix lower mold on ultra-wide worktable, adjust die height via PLC touch screen
2. Match heavy-duty uncoiler, thick plate straightener and wide servo roller feeder to realize continuous coil automatic feeding
3. Set stamping stroke rate, production batch and continuous operation mode on control panel; STC-SV servo version select customized forming motion curve
4. Dual synchronous crankshafts drive long-stroke slide reciprocate to complete thick plate blanking, deep bending and medium deep drawing multi-process forming
5. Standard dual air cushions output uniform full-table blank holder force to prevent sheet wrinkling during drawing procedures
6. Safety light curtain triggers instant emergency stop once operators’ hands enter high-pressure stamping working zone

A
STC series supports 1–8mm cold rolled steel, galvanized sheet, stainless steel, copper and aluminum alloy. It performs well in heavy blanking, deep bending, flanging and medium deep drawing with large multi-station progressive dies, and cannot handle plates thicker than 8mm or ultra-heavy deep drawing requiring closed frame ultra-high rigidity.

A

1. ST Series (Single Crank C Frame): Single eccentric crankshaft, small-medium tonnage 25–110Ton, small worktable, limited anti-deflection performance under heavy eccentric load, fit thin-medium sheet simple punching & light bending.
2. STC Series (Two-Point Double Crank Open C Frame): Twin synchronous crank symmetrical force transmission, heavy tonnage 110–315Ton, ultra-wide worktable, much lower frame deflection than ST single crank, three-side multi-direction feeding, standard dual air cushions, ideal for large progressive dies & medium deep drawing.
3. STE Series (Closed H Double Crank): Fully closed symmetrical double column ultra-high rigidity frame, near-zero deflection under full load, tonnage 160–600Ton, support over 8mm thick plate heavy deep drawing, only front-rear feeding limited, higher procurement cost.
   Customers select model based on sheet thickness, mold width, forming depth, feeding direction and budget.

A
Yes. Reinforced three-side open C frame reserves large-size standard mounting interfaces for heavy uncoilers, thick plate straighteners and wide servo feeders, fully compatible with extra-long multi-station progressive dies. Our engineering team provides complete turnkey heavy automatic stamping line layout & parameter debugging solutions.

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Dual independent 3.6-ton air die cushions are factory standard configuration with no extra charges. Two separated air cushions deliver balanced blank holder force covering the whole wide worktable, effectively restrain thick sheet wrinkling during medium deep drawing and deep bending, improve uniform dimensional consistency of large formed parts, eliminate extra cost of separate air cushion purchase.

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Full standard multi-layer industrial safety interlock system: multi-beam safety light curtain, large-flow hydraulic overload pressure relief protection, dual-solenoid clutch anti-secondary drop interlock circuit, mushroom emergency stop button, two-hand safety operation mode, overload auto alarm & machine lock function. All safety assemblies pass CE and JIS industrial safety inspection standards, equipped with Japan SMC air treatment unit and high-temperature sealing rings as standard.

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Main motor, PLC and touch screen power supply voltage can be customized to match worldwide grid standards: 3-phase 220/380V 50Hz for Southeast Asia and domestic market; 200/415V 60Hz for Europe, Middle East and Latin America. We provide complete voltage conversion wiring diagrams and overseas power matching test reports, control system optional upon customer demand.

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12-month full machine warranty calculated from shipment date, excluding wearing parts including clutch friction plates, sealing rings, springs and copper sleeves. Lifelong free remote technical guidance, permanent supply of original spare parts at factory cost. Overseas on-site installation, commissioning and operator training services are available upon customer request.

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STC machine weight ranges from 14Ton to 42Ton according to different tonnage models. Factory ground bearing load must reach above 15 tons per square meter, basic reinforcement treatment recommended for ordinary workshop floors to avoid long-term floor sinking.

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1. Standard STC Mechanical: Fixed mechanical crank motion curve, low procurement cost, suitable for conventional blanking, bending and shallow drawing mass production.
2. STC-SV Full Servo Version: Servo direct drive cancel fixed stroke limitation, built-in 9 programmable stamping motion curves, freely adjust stroke length, speed and bottom dead center dwell time, save 30%–50% energy, ultra-low vibration & noise, perfect for complex precision forming, embossing and deep drawing with high surface quality requirement. Servo version has higher purchase cost than standard mechanical model.

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Equipped with large 15.6-inch intuitive industrial PLC touch screen, real-time display of stroke speed, die height, production count and equipment fault information. Three simple operation modes (inch, single, continuous). New operators can finish mold adjustment and mass production operation within 40 minutes after simple training; STC-SV servo version motion curve selection guided by visual interface with easy parameter setup.