The Automatic Reactor Core Cutting Machine DHJ400-BK is an industrial-grade, high-precision solution engineered for processing premium electrical silicon steel strips. Specifically designed to manufacture step-lap reactor core limbs, legs, and yokes, this versatile machine handles strip widths ranging from 40mm to 400mm with fully adjustable cut lengths. Driven entirely by advanced synchronized servo motors, every feeding, punching, and shearing action is executed with micro-level accuracy. By incorporating an intelligent step-lap stacking function and an integrated punching unit, the DHJ400-BK dramatically minimizes magnetic core loss and accelerates your transformer production line throughput.
Step-Lap Programming Capability: Seamlessly program and execute complex step-lap cutting sequences to maximize the energy efficiency of your reactor cores.
Ultra-Hard, Extended Life Cutters: The shearing blade features an extreme hardness profile of HRC 88–90, delivering up to 5 million precise cuts before ever requiring regrinding, drastically reducing your operational downtime.
Full Servo-Driven Kinematics: Eliminates mechanical lag. Every strip movement and cutting cycle is executed via high-torque servo motors to maintain a feeding tolerance of $\pm$0.05mm/m.
Zero-Defect Edge Profiling: Processes thin-gauge silicon steel sheets down to a burr height of less than 0.02mm, effectively eliminating core short circuits and electrical degradation.
Multi-Functional In-Line Operation: Uncoils, straightens, punches holes, cuts, and stacks strips automatically in a single continuous layout.
| Engineering Parameter | Industrial Standard Specifications |
| Model | DHJ400-BK (Step-Lap Precision Series) |
| Processing Material | Electrical Silicon Steel Strips (CRGO / CRNGO) |
| Cutting Sheet Thickness | 0.23 mm – 0.35 mm |
| Cutting Sheet Width Range | 40 mm – 400 mm |
| Adjustable Cutting Length | 10 mm – 9,999 mm |
| Max. Feeding Speed | 180 m/min |
| Precision Feeding Tolerance | 0.05 mm/m |
| Post-Cut Burr Height | 0.02 mm |
| Blade Tool Hardness | HRC 88 – 90 (5 Million Cuts Lifespan) |
| Decoiler Type / Range | Hydraulic Expanding / 470 mm – 508 mm |
| Working Platform Height | 900 mm |
| Total Rated Power | 12.5 kW |
| Power Supply | 3-Phase, 380V, 50Hz |
| Control Logic & Interface | Industrial PLC + Centralized Touch Screen Panel |
| Warranty Protection | 12-Month Comprehensive Factory Warranty |
The cutting machine DHJ400-BK is structured using premium modules to support stable, continuous 24/7 manufacturing runs:
Hydraulic Mandrel Decoiler: Provides steady tension and rapid core expanding for secure master coil placement.
Reinforced Steel Frame & Feed System: High-grip feeding rollers driven by servo motors guarantee zero slip at speeds up to 180m/min.
High-Speed Hole Punching Matrix: Dynamically punches crisp, burr-free bolt holes exactly matching your core engineering blueprints.
Heavy-Shear Guillotine Unit: Executes clean cuts at variable angles to create flawless mitered joints.
Automated Collection & Stacking Table: Neatly organizes finished laminations for immediate transport to your core assembly bay.
Silicon steel is highly abrasive. While standard blades dull quickly, our specialized high-hardness composite blades execute 5 million cuts before needing maintenance. This translates to months of uninterrupted production and lower replacement tool costs.
Absolutely. While the DHJ400-BK handles up to 400mm strips, our engineering team can build customized systems tailored to your specific transformer capacity metrics.
Ready to Upgrade Your Reactor Core Production Capabilities?
Streamline your manufacturing, reduce core losses, and lower your maintenance overhead. Contact our technical sales team today to request custom configuration options, factory-direct pricing, and detailed equipment layout drawings!
Fig 1: Automatic core cutting machine DHJ400's full view
Fig 2: Automatic core cutting machine DHJ400's punching unit
