Overlock comparison
JACK JK-797 vs JACK C7 URUS: 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 C7 URUS
Jack’s flagship AI overlock machine — reads fabric thickness in real time and adjusts pressure and feed automatically for a perfect stitch, even on difficult materials.
Key differences
- Both list the same top speed of 7000 s.p.m.
- Series: JACK JK-797 — Overlock, small-arm; JACK C7 URUS — Overlock, AI-integrated.
- Availability: JACK JK-797 — Order on request; JACK C7 URUS — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK JK-797 | JACK C7 URUS |
|---|---|---|
| Series | Overlock, small-arm | Overlock, AI-integrated |
| Needle | DCx27, 9#–11# | — |
| Max sewing speed | Up to 7000 s.p.m. | 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 |
| Torque | — | Automatic torque increase up to 9.2Nm for thickness changes |
| Presser foot lift | — | Digital, stepper-motor controlled, up to 10mm |
| Thread cutter | — | Automatic electric cutter, short thread remaining (down to 5mm) |
| Feed dog selector | — | Mechanical L/M/H lever for light, medium, heavy fabric |
| Sewing modes | — | Manual, semi-automatic, fully automatic (photocell) |
| Connectivity | — | Integrated WiFi, Industry 4.0 ready |
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 C7 URUS if…
Jack’s flagship AI overlock machine — reads fabric thickness in real time and adjusts pressure and feed automatically for a perfect stitch, even on difficult materials.
- Auto-adjusts to fabric thickness
- Photocell auto-sew mode
- Short-thread auto cutter
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 C7 URUS?
Both list the same top speed of 7000 s.p.m. Series: JACK JK-797 — Overlock, small-arm; JACK C7 URUS — Overlock, AI-integrated. Availability: JACK JK-797 — Order on request; JACK C7 URUS — Order on request. Call to confirm today's stock.
Which is better, the JACK JK-797 or the JACK C7 URUS?
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 C7 URUS is described as: Jack’s flagship AI overlock machine — reads fabric thickness in real time and adjusts pressure and feed automatically for a perfect stitch, even on difficult materials.
What is the price of the JACK JK-797 and the JACK C7 URUS?
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.