35800BWDN - Sewing machine Union Special - Free user manual and instructions
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| Product Type | Industrial Sewing Machine |
| Brand | Union Special |
| Model | 35800BWDN |
| Category | Sewing machine |
| Primary Use | Heavy-duty stitching for large panels, bags, and industrial fabric |
| Dimensions (approx.) | 550 × 300 × 450 mm |
| Weight (approx.) | 35 kg (77 lbs) |
| Power Supply | 110-240V AC, 50/60Hz |
| Motor Power | 550W servo motor with variable speed control |
| Max. Sewing Speed | Up to 2,500 stitches per minute |
| Stitch Type | Double chainstitch / lockstitch (interchangeable) |
| Needle System | Industrial needle system 135×17 |
| Threads | 2- or 3-thread configuration |
| Lubrication | Automatic oiling system for high-speed operation |
| Stitch Length Adjustment | Tool-free dial, adjustable from 1 to 6 mm |
| Presser Foot Lift | Manual and knee-lift options for thick materials |
| Safety Features | Protective finger guard, safety foot switch, and emergency stop |
| Maintenance | Regular cleaning of feed dogs and oiling of moving parts |
| Spare Parts & Repairability | Modular design; parts available from authorized Union Special dealers |
| Accessories Included | Thread stand, needle set, screwdrivers, oil bottle, and manual |
Frequently Asked Questions - 35800BWDN Union Special
How do I thread the Union Special 35800BWDN sewing machine?
Start by raising the presser foot, then follow the numbered guides on the machine: place the thread spool on the spindle, pass the thread through the tension discs, the take-up lever, and the needle eye. Always use high-quality thread designed for industrial machines for best results.
What type of needle should I use?
This machine uses industrial needles system 135×17. Select the needle size based on fabric weight: use size 90/14 for light to medium fabrics and size 110/18 or larger for heavy materials.
How can I adjust the stitch length?
Turn the stitch length dial on the side of the machine to select a length between 1 and 6 mm. Turn clockwise to shorten, counterclockwise to lengthen. Test on a scrap piece to verify the setting.
How often should I oil the machine?
For continuous industrial use, oil the machine once every 8 hours of operation or daily. Use only high-quality sewing machine oil and apply to the designated oiling points (hook area, needle bar, and cam mechanism). The machine has an automatic oiling system, but manual topping-up is required.
Why is the machine skipping stitches?
Skipped stitches are often caused by a bent needle, incorrect needle type, dull needle, or improper timing. First, replace the needle and ensure it is inserted correctly. Check the thread tension and verify that the needle bar height is correctly set. If the issue persists, contact a qualified technician.
How do I change the needle?
Disconnect the power supply first. Loosen the needle clamp screw, remove the old needle, and insert the new one with the flat side facing the back. Push it fully upward into the needle clamp and tighten the screw. Ensure the needle is properly aligned with the hook.
Can I use this machine for lightweight fabrics?
Yes, but you may need to adjust the tension, use a smaller needle (e.g., size 90/14), and select a shorter stitch length. The machine's industrial feed system can handle delicate materials with reduced pressure.
What safety precautions should I follow?
Always keep the finger guard in place, never reach under the needle while the machine is running, disconnect the power before cleaning or adjustment, and use the safety foot switch as a quick stop. Wear approved safety glasses and avoid loose clothing.
How do I clean the machine after heavy use?
Turn off and unplug the machine. Remove the needle plate and use a soft brush to clean the feed dogs and hook area. Wipe the exterior with a dry cloth. Re-oil as needed. Avoid using compressed air, as it can push lint deeper into the mechanism.
Is the 35800BWDN portable?
This industrial machine is designed for stationary workshop or factory mounting. It can be placed on a sturdy table or industrial stand. Its weight of about 35 kg makes it not easily portable, but it can be moved with a trolley.
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USER MANUAL 35800BWDN Union Special
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Product information
Brand : Union Special
Model : 35800BWDN
Category : Sewing machine