Lockstitch comparison
JACK JK-8558G vs JACK S5: 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 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 S5
Computerized post-bed roller-feed machine with a built-in panel, QR-code software upgrades and a 100% stitch-overlap ratio.
Key differences
- JACK JK-8558G lists the higher top speed: 4000 s.p.m. against 3000 s.p.m.
- Series: JACK JK-8558G — Chain stitch, flatbed; JACK S5 — Post bed.
- Needle: JACK JK-8558G — TVx7, various gauges, 1/2/3-needle; JACK S5 — INDPX5#16.
- Best for: JACK JK-8558G — Umbrella, denim, T-shirt (chain stitch); JACK S5 — Shirts, suits, pants, down jackets.
- Availability: JACK JK-8558G — Order on request; JACK S5 — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK JK-8558G | JACK S5 |
|---|---|---|
| Series | Chain stitch, flatbed | Post bed |
| Needle | TVx7, various gauges, 1/2/3-needle | INDPX5#16 |
| Max sewing speed | Up to 4000 s.p.m. | Up to 3000 s.p.m. |
| Best for | Umbrella, denim, T-shirt (chain stitch) | Shirts, suits, pants, down jackets |
| Availability | Order on request | 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 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 S5 if…
Computerized post-bed roller-feed machine with a built-in panel, QR-code software upgrades and a 100% stitch-overlap ratio.
- Post-bed design
- Runs up to 3000 s.p.m.
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 S5?
JACK JK-8558G lists the higher top speed: 4000 s.p.m. against 3000 s.p.m. Series: JACK JK-8558G — Chain stitch, flatbed; JACK S5 — Post bed. Needle: JACK JK-8558G — TVx7, various gauges, 1/2/3-needle; JACK S5 — INDPX5#16.
Which is better, the JACK JK-8558G or the JACK S5?
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 S5 is described as: Computerized post-bed roller-feed machine with a built-in panel, QR-code software upgrades and a 100% stitch-overlap ratio.
What is the price of the JACK JK-8558G and the JACK S5?
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.