Lockstitch comparison
JACK JK-8558G vs JACK H7: 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.
JACK JK-8558G
Power-saving flatbed chain-stitch machine, available in 1, 2 or 3-needle configurations, with a rear puller for umbrella, denim and T-shirt work.
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.
Key differences
- Series: JACK JK-8558G — Chain stitch, flatbed; JACK H7 — Heavy-Duty, digitalized top feed.
- Best for: JACK JK-8558G — Umbrella, denim, T-shirt (chain stitch); JACK H7 — Sofa, car seat, luggage, gloves, bags, shoes.
- Availability: JACK JK-8558G — Order on request; JACK H7 — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK JK-8558G | JACK H7 |
|---|---|---|
| Series | Chain stitch, flatbed | Heavy-Duty, digitalized top feed |
| Needle | TVx7, various gauges, 1/2/3-needle | — |
| Max sewing speed | Up to 4000 s.p.m. | — |
| Best for | Umbrella, denim, T-shirt (chain stitch) | Sofa, car seat, luggage, gloves, bags, shoes |
| Availability | Order on request | Order on request |
| 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 |
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 JK-8558G if…
Power-saving flatbed chain-stitch machine, available in 1, 2 or 3-needle configurations, with a rear puller for umbrella, denim and T-shirt work.
- 1/2/3-needle configurations
- Runs up to 4000 s.p.m.
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
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 JK-8558G and the JACK H7?
Series: JACK JK-8558G — Chain stitch, flatbed; JACK H7 — Heavy-Duty, digitalized top feed. Best for: JACK JK-8558G — Umbrella, denim, T-shirt (chain stitch); JACK H7 — Sofa, car seat, luggage, gloves, bags, shoes. Availability: JACK JK-8558G — Order on request; JACK H7 — Order on request. Call to confirm today's stock.
Which is better, the JACK JK-8558G or the JACK H7?
It depends on your fabric, operation and daily volume. The JACK JK-8558G is described as: Power-saving flatbed chain-stitch machine, available in 1, 2 or 3-needle configurations, with a rear puller for umbrella, denim and T-shirt work. 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.
What is the price of the JACK JK-8558G and the JACK H7?
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.