Overlock comparison
JACK JK-797 vs JACK E4S: which overlock machine should you buy?
A side-by-side look at two overlock machines from our catalog: the specifications each one lists, where they differ, and which kind of production each suits. Both are used for knitwear, wovens, garments.
JACK JK-797
Small cylinder-bed, super-fast overlock with variable top feed — a compact bed for flexible, no-dislocation sewing on curved seams.
JACK E4S
Overlock machine with a sealed, leak-free oil tray and an L/M/H feed selector for light to heavy fabric — start/stop response is cut by 40-50% via a one-key reset intelligent panel, for T-shirts, underwear and jeans.
Key differences
- Series: JACK JK-797 — Overlock, small-arm; JACK E4S — Overlock.
- Availability: JACK JK-797 — Order on request; JACK E4S — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK JK-797 | JACK E4S |
|---|---|---|
| Series | Overlock, small-arm | Overlock |
| Needle | DCx27, 9#–11# | — |
| Max sewing speed | Up to 7000 s.p.m. | — |
| Best for | T-shirts, underwear, jeans, mid-to-high-level clothing | T-shirts, underwear, jeans, mid-to-high-level clothing |
| Availability | Order on request | Order on request |
| Feed selector | — | L/M/H lever for light, medium, heavy fabric |
| Response | — | Start/stop response shortened by 40-50% |
| Lubrication | — | Enclosed needle bar, sealed oil tray — no leaks |
| Controls | — | One-key reset intelligent panel, LED light |
| Motor | — | Single-shaft, integrated energy-saving motor |
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-797 if…
Small cylinder-bed, super-fast overlock with variable top feed — a compact bed for flexible, no-dislocation sewing on curved seams.
- Compact small-arm bed
- Runs up to 7000 s.p.m.
Choose the JACK E4S if…
Overlock machine with a sealed, leak-free oil tray and an L/M/H feed selector for light to heavy fabric — start/stop response is cut by 40-50% via a one-key reset intelligent panel, for T-shirts, underwear and jeans.
- L/M/H feed selector
- 40-50% faster start/stop
- Sealed, leak-free oil tray
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-797 and the JACK E4S?
Series: JACK JK-797 — Overlock, small-arm; JACK E4S — Overlock. Availability: JACK JK-797 — Order on request; JACK E4S — Order on request. Call to confirm today's stock.
Which is better, the JACK JK-797 or the JACK E4S?
It depends on your fabric, operation and daily volume. The JACK JK-797 is described as: Small cylinder-bed, super-fast overlock with variable top feed — a compact bed for flexible, no-dislocation sewing on curved seams. The JACK E4S is described as: Overlock machine with a sealed, leak-free oil tray and an L/M/H feed selector for light to heavy fabric — start/stop response is cut by 40-50% via a one-key reset intelligent panel, for T-shirts, underwear and jeans.
What is the price of the JACK JK-797 and the JACK E4S?
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.