Lockstitch comparison
JACK H7 vs JACK Z7: 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 bags.
JACK H7
Jack’s current top-feed heavy-duty lockstitch, replacing the older H5/H6 — pierces 10+ layers of leather with a fully digital, 16-level presser foot lift.
JACK Z7
Heavy-duty computerized lockstitch machine with triple transport — needle feed plus top and bottom feed together — controlled from a full digital touch panel, for sofas, car seats, luggage and heavy leather goods.
Key differences
- Series: JACK H7 — Heavy-Duty, digitalized top feed; JACK Z7 — Heavy-Duty, triple transport.
- Controls: JACK H7 — Digital knee lifter with micro-lift, double-row LED lights; JACK Z7 — Full digital touch panel.
- Best for: JACK H7 — Sofa, car seat, luggage, gloves, bags, shoes; JACK Z7 — Sofa, car seat, luggage, heavy leather goods.
- Availability: JACK H7 — Order on request; JACK Z7 — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK H7 | JACK Z7 |
|---|---|---|
| Series | Heavy-Duty, digitalized top feed | Heavy-Duty, triple transport |
| Motor | 750W integrated motor | — |
| Presser foot lift | 16 adjustable levels, stepper-motor controlled | — |
| Stitch length | 1.3mm – 5.5mm, graduated adjustment | — |
| Material capability | Pierces 10+ layers of leather; handles 8 layers cleanly | — |
| Controls | Digital knee lifter with micro-lift, double-row LED lights | Full digital touch panel |
| Best for | Sofa, car seat, luggage, gloves, bags, shoes | Sofa, car seat, luggage, heavy leather goods |
| Availability | Order on request | Order on request |
| Feed | — | Needle feed + top feed + bottom feed (triple transport) |
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 H7 if…
Jack’s current top-feed heavy-duty lockstitch, replacing the older H5/H6 — pierces 10+ layers of leather with a fully digital, 16-level presser foot lift.
- 16-level stepper foot lift
- Pierces 10+ leather layers
- 1.3-5.5mm stitch range
Choose the JACK Z7 if…
Heavy-duty computerized lockstitch machine with triple transport — needle feed plus top and bottom feed together — controlled from a full digital touch panel, for sofas, car seats, luggage and heavy leather goods.
- Triple transport feed
- Full digital touch panel
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 H7 and the JACK Z7?
Series: JACK H7 — Heavy-Duty, digitalized top feed; JACK Z7 — Heavy-Duty, triple transport. Controls: JACK H7 — Digital knee lifter with micro-lift, double-row LED lights; JACK Z7 — Full digital touch panel. Best for: JACK H7 — Sofa, car seat, luggage, gloves, bags, shoes; JACK Z7 — Sofa, car seat, luggage, heavy leather goods.
Which is better, the JACK H7 or the JACK Z7?
It depends on your fabric, operation and daily volume. The JACK H7 is described as: Jack’s current top-feed heavy-duty lockstitch, replacing the older H5/H6 — pierces 10+ layers of leather with a fully digital, 16-level presser foot lift. The JACK Z7 is described as: Heavy-duty computerized lockstitch machine with triple transport — needle feed plus top and bottom feed together — controlled from a full digital touch panel, for sofas, car seats, luggage and heavy leather goods.
What is the price of the JACK H7 and the JACK Z7?
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.