Lockstitch comparison
JACK A4C vs MAQI LS3820DP: which lockstitch machine should you buy?
A side-by-side look at two lockstitch machines from our catalog: the specifications each one lists, where they differ, and which kind of production each suits. Both are used for garments.
JACK A4C
AI-integrated lockstitch machine running the Jack NTB control system with the Octopus "Nine-Brain" chip — direct-drive servo motor, auto thread trimmer, auto backtack and auto foot lift at up to 5000 s.p.m.
MAQI LS3820DP
MAQI lists the LS3820DP under its Lockstitch series, but its own product page names it a "direct drive chain stitch sewing machine" with a curved-needle construction and a puller/feed panel — closer to a chainstitch/blind-stitch head than a standard lockstitch. Confirm the exact stitch type with a specialist before ordering.
Key differences
- JACK A4C lists an automatic thread trimmer; MAQI LS3820DP does not list one.
- Series: JACK A4C — Lockstitch (A-series, AI-integrated); MAQI LS3820DP — Listed as Lockstitch by MAQI; product page names it a chain stitch machine.
- Needle: JACK A4C — DBx1, 11-18#; MAQI LS3820DP — Curved-needle construction.
- Feed: JACK A4C — Computerized, auto-trimmer, auto backtack, auto foot lift; MAQI LS3820DP — Linkage part, puller/feed panel.
- Availability: JACK A4C — Order on request; MAQI LS3820DP — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK A4C | MAQI LS3820DP |
|---|---|---|
| Series | Lockstitch (A-series, AI-integrated) | Listed as Lockstitch by MAQI; product page names it a chain stitch machine |
| Needle | DBx1, 11-18# | Curved-needle construction |
| Number of threads | 2 | — |
| Max stitch length | 5mm | — |
| Presser foot lift (hand/auto) | 13mm / 6mm | — |
| Max sewing speed | 5000 s.p.m. | — |
| Control system | Jack NTB system with Octopus "Nine-Brain" AI chip | — |
| Motor | Direct-drive integrated servo motor | — |
| Feed | Computerized, auto-trimmer, auto backtack, auto foot lift | Linkage part, puller/feed panel |
| Availability | Order on request | Order on request |
| Speed/oil | — | Low speed, oil-supplied head |
Highlighted rows differ. A dash means the catalog does not list that specification for the machine; ask us and we will confirm it.
Which one fits your work?
Choose the JACK A4C if…
AI-integrated lockstitch machine running the Jack NTB control system with the Octopus "Nine-Brain" chip — direct-drive servo motor, auto thread trimmer, auto backtack and auto foot lift at up to 5000 s.p.m.
- AI Nine-Brain chip
- Auto trim, backtack & foot lift
- Direct-drive servo motor
Choose the MAQI LS3820DP if…
MAQI lists the LS3820DP under its Lockstitch series, but its own product page names it a "direct drive chain stitch sewing machine" with a curved-needle construction and a puller/feed panel — closer to a chainstitch/blind-stitch head than a standard lockstitch. Confirm the exact stitch type with a specialist before ordering.
- Curved-needle construction
- Puller feed panel
Swami Enterprises is an authorized JACK dealer and importer. Swami Enterprises stocks MAQI machines as a stocking partner. Bring your own fabric to the Chanakya Place showroom and sew on both before you decide.
Questions buyers ask
What is the difference between the JACK A4C and the MAQI LS3820DP?
JACK A4C lists an automatic thread trimmer; MAQI LS3820DP does not list one. Series: JACK A4C — Lockstitch (A-series, AI-integrated); MAQI LS3820DP — Listed as Lockstitch by MAQI; product page names it a chain stitch machine. Needle: JACK A4C — DBx1, 11-18#; MAQI LS3820DP — Curved-needle construction.
Which is better, the JACK A4C or the MAQI LS3820DP?
It depends on your fabric, operation and daily volume. The JACK A4C is described as: AI-integrated lockstitch machine running the Jack NTB control system with the Octopus "Nine-Brain" chip — direct-drive servo motor, auto thread trimmer, auto backtack and auto foot lift at up to 5000 s.p.m. The MAQI LS3820DP is described as: MAQI lists the LS3820DP under its Lockstitch series, but its own product page names it a "direct drive chain stitch sewing machine" with a curved-needle construction and a puller/feed panel — closer to a chainstitch/blind-stitch head than a standard lockstitch. Confirm the exact stitch type with a specialist before ordering.
What is the price of the JACK A4C and the MAQI LS3820DP?
Prices depend on the model, quantity and the day. Call +91 99713 36656 or request a quote for today's price on either machine.
Can I see both machines before buying?
Yes. Visit the showroom at Chanakya Place, New Delhi. Call +91 99713 36656 first so the team can confirm which models are on display and in stock.
Not sure which to pick?
Tell us your fabric, operation and daily volume. A specialist will recommend one, with today's price.