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SAFE · Chainstitch
SF-3802D Double Needle Chainstitch Sewing Machine
The SAFE SF-3802D double needle chainstitch sewing machine is a direct-drive option for parallel chainstitch seams. The catalogue identifies this two-needle configuration for medium and heavy material, with an integrated servo-drive arrangement.

Product features
Built around the sewing operation.
- 01Two needles form parallel rows for operations requiring a double-needle chainstitch arrangement.
- 02Integrated servo / direct-drive operation is specified for the D series.
- 03The table lists compound feed for material handling.
- 04A 1.4–4 mm stitch-length range and maximum 4,000 rpm rating support configuration comparison.
Applications & catalogue details
Check the material, seam and handling.
- Parallel chainstitch seams in garment assembly.
- Medium- and heavy-material operations requiring two needle rows.
- Production stations selected after reviewing the seam, thread and required needle spacing.
Send a material or finished-seam sample to confirm the configuration. Catalogue examples illustrate the operation; the required result should be agreed before ordering.
Discuss Your ApplicationTechnical data
SF-3802D specifications
SAFE v06 catalogue, printed page 25. Confirm the supplied configuration in your quotation.
Maximum speed is a catalogue rating. Actual output depends on material, setup and handling. Packing dimensions, where listed, describe the shipment.
View the SAFE Catalogue| Model | SF-3802D |
|---|---|
| Stitch type | Two-needle chainstitch |
| Drive | Integrated servo / direct drive |
| Feed arrangement | Compound feed |
| Needle system | TV×7 #9–21 |
| Stitch length | 1.4–4 mm |
| Presser-foot lift | 8–10 mm |
| Maximum speed | 4,000 rpm |
| Material category | Medium / heavy |
| Net / gross weight | 48 / 50 kg |
| Packing dimensions | 635 × 245 × 565 mm |
Before you choose
Questions about SF-3802D
Is this a two-needle or three-needle chainstitch machine?
SF-3802D is the two-needle version. Needle count should be checked by model rather than inferred from a stitch photograph used elsewhere in the catalogue series.
Is a chainstitch machine the same as a double-needle lockstitch machine?
No. They form different stitch structures. Choose according to the seam requirement, thread appearance and garment construction, and provide both face and reverse views of the desired seam.
What is the needle spacing?
A model-specific spacing is not confirmed in the extracted v06 table. State the distance required between the two stitch rows so the supplied gauge can be confirmed before ordering.
Can this replace an overlocker or coverstitch machine?
It should be selected for the specified chainstitch operation. An overlocker or coverstitch machine has a different role; compare the actual seam construction instead of selecting solely by needle count.
Ordering & technical support
Prepare a configuration-specific enquiry.
Send the model, material, seam or operation, quantity and destination. For automated equipment, include the workpiece dimensions and current handling steps.
Talk to Trentzhou
Request a SF-3802D quotation.
trentzhou@millionindustry.com · WhatsApp +86 18757430046

