The Newlong Industrial DKN-3BP (and DKN-3BPGP) serves as a direct drop-in alternative to the classic Union Special 56100 series for high-speed industrial bag-making applications (polypropylene, paper, jute, and cotton bags).
Key Compatibility & Advantages
Automatic Lubrication System: Features a fully enclosed, automatic oil-pump lubrication system that protects internal components from abrasive textile and paper dust, extending continuous operating hours.The Newlong DKN-3BP / DKN-3BPGP shares direct spare part interchangeability with the Union Special 56100 series.
Direct Mechanical Interchangeability: The DKN-3BP (DKN-3BPGP) is built on the same core architectural blueprint as the 56100. Many internal critical wear components—such as looper rockers and shaft bearings—are interchangeable, minimizing setup changes for existing production lines.
High-Speed Efficiency: Operates at high production speeds (up to 5,000–6,000 RPM depending on the model variation) using a 2-thread double-chain stitch (Type 401) for strong, reliable bag seams.
Enhanced Internal Engineering (GP Model): GP stands for Gear Pump
Cost-Effective Maintenance: Spare parts for Newlong machines are widely available globally and typically cost significantly less than original Union Special replacements, reducing overall total cost of ownership.
- Shared Critical Components: Core mechanical wear parts—such as loopers (e.g., part 51108DA), looper rockers (e.g., part 56313), feed dogs, needle plates, connection pins, and various internal bushings/washers—use identical specifications and cross-reference part numbers.
- Simplified Inventory: Facilities operating existing Union Special 56100 machines can swap in Newlong DKN-3 series heads without needing to stock duplicate sets of high-wear replacement parts.
- Maintenance & Sourcing: Because both lines utilize shared component architecture, technicians can source standard replacement parts from either OEM or aftermarket suppliers seamlessly.