Heavy Duty Cylinder Bed Single Needle Sewing Machine (Long Arm)

This heavy-duty cylinder bed sewing machines are designed to meet the demands of sewing thick and heavy-weight materials, making them ideal for various applications such as harness, tack, saddlery, canvas, sports equipment, and footwear

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  • Cylinder Bed Design: The cylinder bed design of this sewing machine provides a cylindrical surface that allows easy access and maneuverability around curved and cylindrical materials. This feature ensures smooth fabric feeding and precise stitching, even on complex projects.
  • Wide Working Space: Both models provide ample space for operators to easily place and maneuver large workpieces, enhancing productivity.
  • Walking Foot and Needle Feeding System: Ensures reliable stitching on the heaviest materials, facilitating smooth and consistent sewing.
  • Large Shuttle Hook and Bobbin: Reduces the need for frequent bobbin changes, making the machines suitable for sewing extra heavy-weight materials.
  • Thick Threads Stitching: Accommodates thick threads for robust stitching, leveraging the large barrel shuttle design.
  • Optional Add-ons: Can be equipped with a pneumatic presser foot lifter and back tack device for added convenience and functionality.
  • Free Arm Construction: Offers a wider free space, facilitating easy placement and movement of large workpieces.


Model No. BS-441
Stitch Formation Lockstitch
Diameter of Cylinder 85mm
Max. Sewing Thickness 25mm
Stitch Length 0-12mm
Number of Needle Single Needle
Needle Size DY*3
Presser Foot Lift 20mm (by hand), 25mm (by knee)
Working Space 420x210mm
Lubrication Manual Lubrication
Motor 550W 4P clutch motor


  • Regular Cleaning: Remove dust, and fabric remnants from the machine using a soft brush or vacuum. Clean the bobbin case, feed dogs, and needle plate to prevent any build-up that may affect the machine’s performance.
  • Lubrication: Apply sewing machine oil to the designated points. Regular lubrication reduces friction, extends the machine’s lifespan, and ensures smooth operation.
  • Needle Replacement: Replace the needle regularly, especially when it becomes dull or bent. A sharp needle ensures clean and precise stitching.
  • Professional Servicing: Consider taking your sewing machine for professional servicing Periodically. This helps identify any potential issues and ensures optimal performance.

Safety Considerations

  • Power Off: Always turn off the machine and unplug it when not in use, during maintenance, or when changing needles or accessories.
  • Needle Handling: Use caution when handling needles, as they are sharp. Avoid placing your fingers near the needle area while the machine is running.
  • Workspace Organization: Maintain a clean and organized workspace, free from clutter and potential hazards that could interfere with the machine’s operation.
  • Safe Operation: Follow proper threading procedures, adjust the tension correctly, and use appropriate settings for the material being stitched. Keep hands and fingers away from moving parts and the needle area during operation.


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