39500RL - Sewing machine Union Special - Free user manual and instructions
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| Product Type | Industrial Sewing Machine |
| Model | 39500RL |
| Brand | Union Special |
| Dimensions (L x W x H) | 500 x 200 x 300 mm |
| Weight | 20 kg |
| Power Supply | 220-240 V, 50/60 Hz |
| Power Consumption | 200 W |
| Stitch Type | Lockstitch (single needle) |
| Max Sewing Speed | 4,500 stitches per minute |
| Needle System | DB x 1 |
| Needle Size | #14 - #22 |
| Bobbin Type | Horizontal metal bobbins |
| Lubrication | Automatic oil wick system |
| Presser Foot Lift | Manual knee lift |
| Maintenance | Weekly cleaning and oiling; replace needles periodically |
| Safety Features | Finger guard, needle guard, belt guard |
| Spare Parts Available | Needles, bobbins, shuttle hooks, oil wicks, feed dogs |
| Repairability | Serviceable by qualified technician; parts widely available |
Frequently Asked Questions - 39500RL Union Special
How do I thread the Union Special 39500RL sewing machine?
Refer to the threading diagram on the machine. Start with the thread spool, pass through the tension discs, take-up lever, and then through the needle eye from front to back.
What type of oil should I use for lubrication?
Use a high-quality sewing machine oil, preferably Union Special oil type 2 or a non-detergent ISO VG 10 oil. Do not use household oils.
How do I adjust the thread tension?
Turn the tension dial clockwise to increase tension, counterclockwise to decrease. Ideal tension forms a balanced stitch with threads meeting in the middle of the fabric.
What needle sizes are compatible with this machine?
The machine uses DB x 1 needles in sizes #14 to #22. Choose the correct size based on fabric weight.
How often should I clean the machine?
Clean the machine after every 8 hours of use. Remove lint from the feed dogs, bobbin case, and shuttle area using a brush or compressed air.
Why is my machine skipping stitches?
Skipped stitches can be caused by a bent needle, incorrect needle size, or improper threading. Check the needle condition and alignment, and re-thread the machine.
What is the maximum sewing speed?
The Union Special 39500RL can sew up to 4,500 stitches per minute under optimal conditions.
How do I replace the bobbin?
Open the bobbin cover, remove the empty bobbin, insert a new wound bobbin ensuring the thread unwinds clockwise. Pull the thread through the tension spring and slot.
Can I use this machine for heavy fabrics like denim or leather?
Yes, this industrial machine is designed for heavy-duty fabrics. Use appropriate needle size and adjust presser foot pressure as needed.
Where can I find replacement parts?
Replacement parts are available through authorized Union Special dealers or online industrial sewing machine parts suppliers.
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USER MANUAL 39500RL Union Special
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Product information
Brand : Union Special
Model : 39500RL
Category : Sewing machine