Lockstitch comparison
JACK S7 vs JUKI DDL-8700: 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 wovens, garments.

JACK S7
Jack’s current digitalized post-bed machine — three independent stepper motors and a 5-inch touch screen for accurate, noiseless roller-feed sewing.

JUKI DDL-8700
JUKI's standard 1-needle lockstitch machine, also offered as the DDL-8700-7 with an automatic thread trimmer and a new-model compact servomotor for energy saving.
Key differences
- JUKI DDL-8700 lists an automatic thread trimmer; JACK S7 does not list one.
Specifications side by side
| Specification | JACK S7 | JUKI DDL-8700 |
|---|---|---|
| Series | Post bed, digitalized | — |
| Motors | 3 stepper motors (needle bar + two rollers) plus main shaft motor | — |
| Screen | 5-inch multilanguage touch screen | — |
| Thread trimmer | Short-thread cut to 3mm precision | — |
| Perforation capacity | Penetrates 110+ layers of A4 paper | — |
| Connectivity | Industry 4.0 WiFi module (optional) | — |
| Best for | Shirts, jeans, non-woven bags, shoes, bags | — |
| Availability | Order on request | — |
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 S7 if…
Jack’s current digitalized post-bed machine — three independent stepper motors and a 5-inch touch screen for accurate, noiseless roller-feed sewing.
- 3 stepper motors + main shaft
- 3mm-precision thread trim
- 110+ layer perforation capacity
Choose the JUKI DDL-8700 if…
JUKI's standard 1-needle lockstitch machine, also offered as the DDL-8700-7 with an automatic thread trimmer and a new-model compact servomotor for energy saving.
Swami Enterprises is an authorized JACK dealer and importer. Swami Enterprises stocks JUKI 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 S7 and the JUKI DDL-8700?
JUKI DDL-8700 lists an automatic thread trimmer; JACK S7 does not list one.
Which is better, the JACK S7 or the JUKI DDL-8700?
It depends on your fabric, operation and daily volume. The JACK S7 is described as: Jack’s current digitalized post-bed machine — three independent stepper motors and a 5-inch touch screen for accurate, noiseless roller-feed sewing. The JUKI DDL-8700 is described as: JUKI's standard 1-needle lockstitch machine, also offered as the DDL-8700-7 with an automatic thread trimmer and a new-model compact servomotor for energy saving.
What is the price of the JACK S7 and the JUKI DDL-8700?
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.