Which Jack overlock: C7 Urus, C4 or E5S

The C7 Urus is Jack's top overlock: every automatic feature, plus an AI feed that crosses thick seams at full speed. The C4 has the same automatic modes and voice guide for long runs of the same seam. The E5S is the simple overlock for mixed orders, and it replaces the Jack E4 and E4S.

• Choose the C7 Urus if you want Jack's top overlock, for every seam from knitwear to denim.
• Choose the C4 if you want automatic modes and a voice guide for long runs, such as T-shirts and polos.
• Choose the E5S if you want a simple overlock with a medium and heavy setting.

The three overlocks side by side

"Ask us" means the maker's sources do not state it for that model.

Why is the C7 Urus Jack's top overlock?

• Full speed across thick seams. A sensor on the foot reads each change in thickness, and the motor raises the feed torque up to 9.2 N·m. So it keeps 7,000 spm across hems, cuffs and waistbands instead of slowing down.
• Foot pressure that changes at every joint, checked 32,000 times a second. So the stitch stays even where seams cross.
• Everything automatic. Three sewing modes, automatic thread cut to 5 mm, a digital foot lift to 10 mm and a voice guide.
• One machine for every fabric. A light, medium and heavy selector, and denim versions (C7-5 and C7-6) with size 19 needles.

When is the C4 the right choice?

For long runs of the same seam, such as shoulder and side seams on T-shirts. It runs without the pedal and lifts the foot and cuts the chain by itself. When there is a fault, its voice guide says what is wrong and how to clear it; Jack's video shows it in nine languages, Arabic and English among them.

When is the E5S the right choice?

For mixed orders on a simple machine. The operator switches between a medium and a heavy setting, so the same overlock takes knitwear on one order and denim on the next. Its control works from 90 to 295 V, so it keeps running when the voltage drops or surges.

What is an overlock, or neating machine?

An overlock trims the edge and wraps it in thread in one pass, so cut edges stop fraying and knit seams stretch without breaking. Buyers also call it a serger, an overlocker or, in Ghana, a neating machine.

What about the C60, C5T and JK-797?

The C60 is for factories that want output data from each machine (touch screen, WiFi), the C5T feeds padded and bulky layers from the top and bottom, and the JK-797 has a small arm for cuffs and necklines.

How do you quote?

Each overlock comes as a full set: the head with its direct-drive motor and control, the table and the stand. We deliver from Sharjah across the UAE, the GCC and Africa, install the machines and train your operators. Jack machines from Al Borj, the authorised Jack distributor in the UAE, come with a 2-year warranty.

Price on request. Send the model, the number of threads, the quantity and your city on WhatsApp at +971 6 533 3413, and we reply usually within one working day.

Questions and answers

Which Jack overlock is the best?

The C7 Urus, Jack's top overlock. It has every automatic feature of the C4, plus an AI feed that senses thick seams and keeps 7,000 spm across them.

Jack C4 or C7 Urus: which should I buy?

The C7 Urus if your seams cross thick joints or you sew denim. The C4 if you sew long runs of the same knit seam and want automatic modes and a voice guide.

Which Jack overlock is best for denim?

The C7 Urus denim versions, C7-5 and C7-6, with size 19 needles at up to 6,000 spm. Their feed changes the foot pressure at each cross seam, so thick joints go through without skipped stitches.

Is a neating machine the same as an overlock?

Yes. A neating machine, serger or overlocker trims the raw edge and wraps it in thread in one pass; the Jack C7 Urus, C4 and E5S are all overlocks.

What is the price of a Jack overlock, and what warranty does it have?

Price on request: send the model, the number of threads, the quantity and your city on WhatsApp, and we reply usually within one working day. Jack machines from Al Borj come with a 2-year warranty.