Jack JK-20U-63Z Zig Zag

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Jack JK-20U-63Z Zig Zag

Revamped and modernised Singer 20U Short Arm Zig-Zag Machine

Short arm Zig-Zag machine suitable for sewing and embroidering. Zig-zag adjustable in different widths up to 9 mm ideal on medium-light fabrics.
The JK-20U machine is suitable for sewing: women’s underwear, jackets, gloves, elastic reinforcements and other products that require zigzag stitching.

Add Point Button.

In addition to activating the LED light, we call it an inching button, electronic button near the needle bar to add points 1/2 stitches with precision.

Integrated Motor.

Built-in 550W direct drive silent motor for efficient energy saving. Integrated panel for adjustable speed and needle positioning..

Zig Zag width.

The width of the zigzag can reach 9mm and can be controlled by a convenient lever, or by the toggle..

Self Lubrication.

As part of the update this machine is fitted with an oil pump and sump, to give automatic oil supply for better lubrication.

Needle Position.

The needle can be moved to 3 positions (central, right and left) thanks to a convenient slider.


Jack JK-20U-63Z Zig Zag


Jack JK-20U-63Z

Max Speed


Max Needle Pendulum Distance

11mm (Factory Standard maximum swing 9mm)

Max. Stitch Length

5 mm

Foot Lifter Height

Manual: 6mm
Knee: 10mm

Tooth Height

1 +- 0.2mm


When the zigzag speed is 1800 RPM, < 82dB(A)


Small Hook



Drive Mode

Direct Motor

Oil Lubrication

By Manual or Oil Pump

Additional information

Weight 50000 g

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