Jack F6 single-needle lockstitch sewing machine

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Jack F6 single-needle lockstitch sewing machine Specification

Product Type
Jack F6 single-needle lockstitch sewing machine

Color
White/Blue

Stitch Length
7mm Millimeter (mm)

Sewing Speed
5,000 stitches per minute

Condition
New

Voltage
220 Volt (v)

Stitch Formation
single-needle lockstitch formation.

Feed Mechanism
drop-feed mechanism

Power
550 Watt (w)

Sewing Thickness
13mm

Needle
1

Warranty
1 year

Stitch width
0

Dimension (L*W*H)
645*248*550 Millimeter (mm)

Jack F6 single-needle lockstitch sewing machine Trade Information

Minimum Order Quantity
1 Number

Delivery Time
4 Days

About Jack F6 single-needle lockstitch sewing machine

TheÂ Jack F6Â Â is anÂ industrial-grade, single-needle lockstitch sewing machine designed for high-speed production with a focus on energy efficiency. It is an evolution of the popular Jack F5 model, offering enhanced power and improved handling for heavier fabrics.

Key Features

Energy Efficiency: Features an integrated direct-drive servo motor that significantly reduces power consumption compared to traditional clutch motors and operates silently.
High-Speed Performance: Capable of reaching speeds up toÂ 5,000 stitches per minuteÂ for medium-weight fabrics, orÂ 3,500 RPMÂ for the heavy-duty HL version.
Enhanced Thickness Handling: Provides a 7% improvement in thickness handling over previous models, allowing it to sew through up to 15 layers of denim reliably.
User Comfort & Safety: Includes an integrated LED work light, a point-to-point button for precise stitching, and a safety switch that displays an error if the machine is powered on accidentally.
Durability: Built with a heavy-duty cast metal body and an automatic lubrication system to extend the machine's lifespan during long production hours.

TheÂ Jack F6Â Â is engineered to handle significant material thickness, notably sewing up toÂ 15 layers of denimÂ smoothly. This capability is a core feature of its design, marketed as a 7% improvement in thickness handling over previous models like the Jack F5. Material Capacity by Model While all Jack F6Â Â machines have robust penetration power, specific versions are optimized for different thickness levels:

Maximum Sewing Thickness: The machine can handle materials up to approximatelyÂ 13mmÂ in total thickness, matching its maximum presser foot lift height.
Presser Foot Lift: The presser foot can be raised betweenÂ 5mm and 13mm, providing ample clearance for sliding thick or multi-layered sections under the needle.
Needle Penetration: The integrated direct-drive motor provides high torque, ensuring the needle can penetrate dense fabricsÂ

Main Body: The machine features a clean, industrialÂ WhiteÂ or off-white finish.
Accent Colour: Most retailers specify aÂ White/BlueÂ combination, with blue typically found on the logo, control panel details, or decorative elements.
Tech Appearance: It has a modern "tech" look that usesÂ UV printingÂ for certain coloured details on the machine head.

Availability & Listings

Flipkart: Lists the model specifically inÂ White.
Amazon India: Displays aÂ BlueÂ variant, though descriptions often refer to the standard White/Blue industrial aesthetic.
Alraee Sewing Store: Confirms the primary color scheme asÂ White BlueÂ While the Jack F6 is most common in white/blue, other Jack models (like the A6F) are marketed with more varied color options. For theÂ F6 , the classic industrial white is the standard to ensure a clean look in professional workshops.

TheÂ Jack F6Â uses a standardÂ drop-feed mechanism, which is the most common system for industrial lockstitch machines.

How the Drop-Feed System Works

Bottom-Feed Teeth: The mechanism relies onÂ feed dogsÂ (small metal teeth) located below the needle plate.
Cyclic Movement: These teeth move in a rectangular motionrising up to grip the fabric against the presser foot, moving backward to advance the material by one stitch length, and then dropping down to return to the starting position.
Medium-Weight Optimization: The F6's feed is specifically tuned forÂ medium-weight fabrics, ensuring stable and consistent feeding even at high speeds of up toÂ 5,000 RPM.Â

Rotary Hook System: The stitch is formed using aÂ high-speed rotary hookÂ that catches the needle thread loop and carries it around the bobbin case to create the lock.
Thread Type: It usesÂ two threadsÂ (needle and bobbin) to complete the lockstitch.
Automatic Lubrication: An integrated oil pump ensures the moving parts of the stitch-forming mechanism remain lubricated for smooth operation even atÂ 5,000 RPM.

Stitch Control Features

Stitch Length: The stitch length is adjustable up toÂ 5 mmÂ on the standard model and up toÂ 7 mmÂ on the heavy-dutyÂ HL-7Â version.
Precision Positioning: AÂ point-to-point buttonÂ allows for a single half-stitch to be added manually, which is critical for turning corners or precision finishing.
Needle Positioning: The electronic control system allows you to set the needle to stop either consistentlyÂ upÂ orÂ downÂ after a seam, facilitating easy fabric pivoting.
Thread Trimming: Depending on the specific regional version, the F6 may include anÂ automatic thread trimmerÂ to cut thread tails at the end of a seam, though some versions are listed as "non-trim" modelÂ Performance in Thick MaterialsÂ

The stitch formation remains stable across a variety of fabrics thanks to a 7% improvement in thickness handling over the previous F5 model. It is capable of maintaining consistent stitch quality through up toÂ 15 layers of denim

For a visual demonstration of the stitch quality and how it handles different fabric thicknesses:

Exclusions