STF Series Closed Double-Point Precision Punch Press

Press Release

STF Series Closed Double-Point Precision Punch Press is a heavy-duty, large-tonnage stamping solution featuring a three-piece body construction with reinforcing rods locking design. It is engineered for 250T–1250T ultra-heavy load, large-format, and high-precision continuous stamping, especially for automotive outer panels, large structural components, and heavy machinery parts. STF models comply with JIS Grade 1 precision standard and can be matched with Qiaosen’s full range of automation peripherals to form high-efficiency, unmanned stamping lines.

Q1 What makes STF series different & core advantages?

1. Three-piece body + reinforcing rod locking (unique to STF)

   
   

   The upper beam, lower bed, and two uprights are manufactured as separate heavy steel castings, then precisely assembled and locked with high-tensile reinforcing rods. This design reduces assembly stress, improves rigidity by 40% compared to ordinary one-piece frames, and simplifies transportation and installation for super-large tonnages (630T–1250T).
   
   
2. Closed double-crankshaft synchronous drive

   
   

   Equipped with dual 42CrMo forged crankshafts (HRC 52–56) and precision synchronous transmission. Synchronization error ≤ 0.02mm, ensuring uniform force distribution over the entire large worktable. Ideal for extra-large sheet metal and asymmetric parts, effectively preventing workpiece deflection.
   
   
3. High-rigidity slide & three-round guide post structure

   
   

   The slide adopts three-round guide posts + alloy steel bushings with forced lubrication. It minimizes thermal deformation and maintains slider parallelism ±0.01mm and verticality ±0.015mm even under 24-hour full-load operation.
   
   
4. Dynamic balance system + reliable safety protection

   
   

   Built-in dynamic balance mechanism eliminates vibration during high-speed operation, stabilizing the bottom dead center. Standard with OMPI dry clutch-brake, hydraulic overload protection (120% capacity), dual solenoid valves, and infrared safety light curtain, ensuring emergency stop within 0.03s and maximum safety for molds and operators.
   
   
5. Premium global configuration
   
   

• Control: Siemens PLC + touch screen
• Pneumatic: Japan SMC
• Bearings: NSK
• Oil seals: NOK
  
  
  Centralized lubrication + fault diagnosis display reduce maintenance costs by 35%.

Q2 STF Series Main Models & Applications

Q3 Why choose STF over STE?

• STE: One-piece closed frame, 160T–315T, better for medium tonnage, high-speed, and high-precision stamping.
• STF: Three-piece body + reinforcing rods, 250T–1250T, designed for ultra-heavy load, large-format, and easy transport/installation in super-large tonnages.

Q4 Customer Application Data

• Daily operation: 16 hours continuous heavy load
• Precision stability: 12-month precision attenuation < 0.01mm
• Mold life: Increased by 50%
• Efficiency: 30% higher than old single-point presses
• Maintenance: 40% lower annual cost

Q5 After-sales Support

• 12-month warranty for the whole machine; extended warranty for crankshafts and guide posts.
• 24/7 remote technical support and on-site service available.
• Free training for operation, maintenance, and automation line integration.

Conclusion