Lockstitch comparison
JACK H5K vs JACK S7: 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 shirts, wovens, garments.
JACK H5K
Side-cutter synchronous heavy-duty lockstitch with a separated cutter for a neat cutting edge and strong durability.
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.
Key differences
- Series: JACK H5K — Heavy-Duty, edge cutter; JACK S7 — Post bed, digitalized.
- Best for: JACK H5K — Shirts, suits, pants, down jackets; JACK S7 — Shirts, jeans, non-woven bags, shoes, bags.
- Availability: JACK H5K — Order on request; JACK S7 — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK H5K | JACK S7 |
|---|---|---|
| Series | Heavy-Duty, edge cutter | Post bed, digitalized |
| Needle | DPx17, 20-23# | — |
| Max sewing speed | Up to 2000 s.p.m. | — |
| Best for | Shirts, suits, pants, down jackets | Shirts, jeans, non-woven bags, shoes, bags |
| Availability | Order on request | Order on request |
| 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) |
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 H5K if…
Side-cutter synchronous heavy-duty lockstitch with a separated cutter for a neat cutting edge and strong durability.
- Separated side cutter
- Heavy-duty needle build
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
Swami Enterprises is an authorized JACK dealer and importer. 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 H5K and the JACK S7?
Series: JACK H5K — Heavy-Duty, edge cutter; JACK S7 — Post bed, digitalized. Best for: JACK H5K — Shirts, suits, pants, down jackets; JACK S7 — Shirts, jeans, non-woven bags, shoes, bags. Availability: JACK H5K — Order on request; JACK S7 — Order on request. Call to confirm today's stock.
Which is better, the JACK H5K or the JACK S7?
It depends on your fabric, operation and daily volume. The JACK H5K is described as: Side-cutter synchronous heavy-duty lockstitch with a separated cutter for a neat cutting edge and strong durability. 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.
What is the price of the JACK H5K and the JACK S7?
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.