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Jack A4F-DHQ-7 Heavy-Weight 7mm Stitch Computerized Lockstitch

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Jack A4F-DHQ-7 Heavy-Weight 7mm Stitch Computerized Lockstitch

The Jack A4F Besides everything else is large hook/ large bobbin and is classed as medium-heavy duty.

Its got to be one of the best fully automatic lockstitch machine in the world today..   

Is a computerised lockstitch machine with an electronically controlled stitch length and improved backtack.

Operational Panel is easy to understand, No Need to be Afraid of the parameters.

Direct Drive Motor, with cooling fan decreases the temperature of the motor, extending the lifetime of the machine,

(She’ll be running for years).

User – Friendly German design large under arm space.

Half Stitch, Improved back stitch and Electronic control stitch length, Auto Foot Lift, Trims the cotton, Extremely quite . 

Integrated System Clean and Safe. All connections & plugs of the control box are well located & tidied up at the back.

Oh! We think this lockstitch is well designed & well put together.

Each operation has voice command guidance…


Jack A4F-DHQ-7 Heavy-Weight 7mm Stitch Computerized Lockstitch

Specification of machine:

  • Quieter Backtack Function

  • Suitable for Medium Heavy Materials

  • Extremely Quiet with Minimal Vibrations

  • Direct Drive, Silent Servo Motor – The motor is located in the head of the machine

  • Accurate Needle Drop – Reduction of Issues such as Stitch Skipping and Thread Snapping

  • Stitch Length Adjustable on Panel – The Length Can Also Be Locked Into Place on Screen.

  • Different Straight Stitch Patterns can be Programmed to Create Different Look

  • Perfect Sewing Quality – Ideal for Higher End Garments

  • Easy 1 Key Reset Button – Reset to Factory Settings with 1 Button

  • Cooling Fan for Direct Drive Motor – Ideal for Prolonging the Life

  • USB Port – Useful for Phone Charging and Software Updates

  • Small Thread End After Thread Trimming

  • Needle Up/Down Function

  • Adjustable Speed Control – Set the Speed to Your Own Preference

  • LED Lighting Built In

  • Self Oiling – Constantly Oils the Machine when in Use

  • Adjustable Stitch Length 0-5mm

  • Sewing Speed Maximum 5500 Stitch Per Minute

  • Presser Foot Lifter Height of 5mm – 13mm 

  • Reverse Function – Reverse Stitching

  • Backtack Function – For Reinforcement Stitches

  • Half Stitch Function

  • QR Code On Machine – For Product Information and Introduction

  • Needle Code DB X 5

  • High Precision Stitching – Can Reach 0.5mm Length Controlled by Step Motor and can be Locked into Place



Additional information

Weight 65000 g

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