Overlock comparison
JACK C7 URUS vs SINGER S 8140: 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 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.
SINGER S 8140
SINGER's S 8140 is a direct-drive four-thread overlock machine built for up to 70% lower power consumption, with automatic lubrication (with oil filter), needle position control and easily adjustable differential feed.
Key differences
- The catalog lists different roles for the two: compare the "best for" notes below and tell us your fabric and volume.
Specifications side by side
| Specification | JACK C7 URUS | SINGER S 8140 |
|---|---|---|
| Series | Overlock, AI-integrated | — |
| Max sewing speed | 7000 s.p.m. | — |
| 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 | — |
| Best for | T-shirts, underwear, jeans, mid-to-high-level clothing | — |
| Availability | Order on request | — |
| Threads | — | 4-thread overlock |
| Motor | — | Direct drive, up to 70% power saving |
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 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
Choose the SINGER S 8140 if…
SINGER's S 8140 is a direct-drive four-thread overlock machine built for up to 70% lower power consumption, with automatic lubrication (with oil filter), needle position control and easily adjustable differential feed.
Swami Enterprises is an authorized JACK dealer and importer. Swami Enterprises stocks SINGER machines as a stocking partner. 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 C7 URUS and the SINGER S 8140?
The catalog lists different roles for the two: compare the "best for" notes below and tell us your fabric and volume.
Which is better, the JACK C7 URUS or the SINGER S 8140?
It depends on your fabric, operation and daily volume. 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. The SINGER S 8140 is described as: SINGER's S 8140 is a direct-drive four-thread overlock machine built for up to 70% lower power consumption, with automatic lubrication (with oil filter), needle position control and easily adjustable differential feed.
What is the price of the JACK C7 URUS and the SINGER S 8140?
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.