View parts related to this product here

Jack JK-789D-4 Four Thread Overlock

Call for Price

Jack JK-789D-4

High-Speed Direct Drive 4 Thread and a High-Speed Overlock.

Integrated power-saving motor

Adjustable speed. Ease of use, Ease of threading built into this modern designed overlock.

The 4 thread overlock has become the machine of choice for all stretch fabrics.

Oil Supply System Optimisation. Fully enclosed needle bar mechanism & oil return mechanism, an improvement on the condition of needle bar abrasion & oil leaking.

Push-button. Stitch Length control.

Differential feed control allowing flat pucker-free seams on difficult fabrics.

Built-in Led Light. No more struggling with problematic machines.

The Jack JK-798D is a pleasure to use. Silent motor & reliable machine.


Jack JK-789D-4 Four Thread Overlock


B27 size 11/14 Number of needles 2

Direct Drive Motor. 70% saving on a standard clutch motor.

Stitch length. 4.2mm

Stitch Width. 4mm (Nice and wide)

Presser Foot Height. 5.5mm

Sewing Speed. Adjustable up to 5500 S.P.M

Differential Feed Ratio. 0.7 – 2

Fully Lubricated High-Speed Overlock. Complete on Formica tabletop and unit stand.

Additional information

Weight 55000 g

Product Enquiry

You've just added this product to the cart:

Trojan Sewing Logo
CALL: 0151 677 9244