Interlock / Coverstitch comparison
JACK K7-UT vs JACK W5E-UT: which interlock / coverstitch machine should you buy?
A side-by-side look at two interlock / coverstitch machines from our catalog: the specifications each one lists, where they differ, and which kind of production each suits. Both are used for knitwear, activewear, garments.
JACK K7-UT
Jack’s current cylinder-bed interlock, replacing the older K6 — an AI chip reads fabric thickness in real time and adapts automatically, from heavy to light fabric.
JACK W5E-UT
Jack’s current computerized flat-bed interlock with an automatic thread trimmer — a step up from the older W4, built for elastic attaching, tape and waistband work.
Key differences
- JACK K7-UT lists the higher top speed: 6000 s.p.m. against 5500 s.p.m.
- Series: JACK K7-UT — Interlock (cylinder-bed), AI-integrated; JACK W5E-UT — Interlock (flat-bed), computerized.
- Controls: JACK K7-UT — Touch screen with voice guide; JACK W5E-UT — Digital speed display, one-key reset.
- Feed: JACK K7-UT — Active Feed system, auto thread trimmer; JACK W5E-UT — Full-automatic, auto thread trimmer.
- Availability: JACK K7-UT — Order on request; JACK W5E-UT — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK K7-UT | JACK W5E-UT |
|---|---|---|
| Series | Interlock (cylinder-bed), AI-integrated | Interlock (flat-bed), computerized |
| Max sewing speed | 6000 s.p.m. | Up to 5500 s.p.m. |
| Transport torque | 9.2Nm | — |
| Controls | Touch screen with voice guide | Digital speed display, one-key reset |
| Feed | Active Feed system, auto thread trimmer | Full-automatic, auto thread trimmer |
| Build | Rhombic arm, 20mm edge-to-foot clearance; nano-ceramic thread guides | — |
| Vibration / noise | Reduced vibration and noise vs. previous generation | — |
| 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 |
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 K7-UT if…
Jack’s current cylinder-bed interlock, replacing the older K6 — an AI chip reads fabric thickness in real time and adapts automatically, from heavy to light fabric.
- Adapts to fabric thickness
- 20mm clearance rhombic arm
- 9.2Nm transport torque
Choose the JACK W5E-UT if…
Jack’s current computerized flat-bed interlock with an automatic thread trimmer — a step up from the older W4, built for elastic attaching, tape and waistband work.
- Full-automatic auto trimmer
- One-key reset, digital display
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 K7-UT and the JACK W5E-UT?
JACK K7-UT lists the higher top speed: 6000 s.p.m. against 5500 s.p.m. Series: JACK K7-UT — Interlock (cylinder-bed), AI-integrated; JACK W5E-UT — Interlock (flat-bed), computerized. Controls: JACK K7-UT — Touch screen with voice guide; JACK W5E-UT — Digital speed display, one-key reset.
Which is better, the JACK K7-UT or the JACK W5E-UT?
It depends on your fabric, operation and daily volume. The JACK K7-UT is described as: Jack’s current cylinder-bed interlock, replacing the older K6 — an AI chip reads fabric thickness in real time and adapts automatically, from heavy to light fabric. The JACK W5E-UT is described as: Jack’s current computerized flat-bed interlock with an automatic thread trimmer — a step up from the older W4, built for elastic attaching, tape and waistband work.
What is the price of the JACK K7-UT and the JACK W5E-UT?
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.