Overlock comparison
JACK C3c 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 garments, wovens, knitwear.
JACK C3c
High-speed overlock machine with a servo-assisted presser-foot shear, running up to 5500 s.p.m., available in 3-, 4-, 5- and 6-thread configurations for different seam needs.
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
- JACK C7 URUS lists the higher top speed: 7000 s.p.m. against 5500 s.p.m.
- Presser foot lift: JACK C3c — 6.5mm; JACK C7 URUS — Digital, stepper-motor controlled, up to 10mm.
Specifications side by side
| Specification | JACK C3c | JACK C7 URUS |
|---|---|---|
| Configurations | C3c-3-02/233 (3-thread) up to C3c-6-03/333 (6-thread) | — |
| Needle | #11 or #14 depending on configuration | — |
| Max sewing speed | 5500 s.p.m. | 7000 s.p.m. |
| Differential ratio | 0.7-2 | — |
| Presser foot lift | 6.5mm | Digital, stepper-motor controlled, up to 10mm |
| Dimensions | 520 x 360 x 510mm | — |
| Weight | 27.32/34.65kg | — |
| Series | — | Overlock, AI-integrated |
| Torque | — | Automatic torque increase up to 9.2Nm for thickness changes |
| 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 |
| Best for | — | T-shirts, underwear, jeans, mid-to-high-level clothing |
| Availability | — | 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 C3c if…
High-speed overlock machine with a servo-assisted presser-foot shear, running up to 5500 s.p.m., available in 3-, 4-, 5- and 6-thread configurations for different seam needs.
- Servo-assisted shear
- Smooth stitches
- Multiple thread options
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 C3c and the JACK C7 URUS?
JACK C7 URUS lists the higher top speed: 7000 s.p.m. against 5500 s.p.m. Presser foot lift: JACK C3c — 6.5mm; JACK C7 URUS — Digital, stepper-motor controlled, up to 10mm.
Which is better, the JACK C3c or the JACK C7 URUS?
It depends on your fabric, operation and daily volume. The JACK C3c is described as: High-speed overlock machine with a servo-assisted presser-foot shear, running up to 5500 s.p.m., available in 3-, 4-, 5- and 6-thread configurations for different seam needs. 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 C3c 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.