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Home / Sewing & Embroidery Machines / JACK Original Universal Bobbin for Computerized Flatbed Sewing Machines

Attributes

Brand -
Category Hardware & Tools / Sewing & Embroidery Machines
Origin -
Brand JACK
Model Compatibility Universal for Computerized Flatbed Series
Material High-Grade Aluminum Alloy
Bobbin Type Class 15 Style (Low Shoulder)
Color Silver
Package Quantity 10 Pieces per Pack
Weight 45 grams (total pack)
Precision Rating CNC Machined for Balanced Rotation
Recommended Use Industrial and Heavy-Duty Sewing
Warranty 90-Day Manufacturer Defect Coverage

6 reviews

A

Anonymous

Mar 31, 2026

Rating: 5/5

No more skipped stitches

I was having intermittent tension issues with aftermarket bobbins. Switching back to these original JACK bobbins solved the problem immediately. Consistent performance every time.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Smooth operation

Very happy with this purchase. The aluminum finish is smooth, preventing thread drag, and they load easily into the drop-in case. Will buy again.

A

Anonymous

Mar 16, 2026

Rating: 5/5

Quality you can trust

I run a small alteration shop and go through bobbins quickly. These original JACK bobbins are perfectly balanced and don't cause the noise that generic ones do. Highly recommended.

A

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect fit for my JACK A4

These bobbins work flawlessly with my JACK A4 computerized machine. The stitching is smooth, and I haven't experienced any thread bunching since switching to these original parts.

A

Anonymous

Mar 15, 2026

Rating: 5/5

Essential for industrial machines

If you own a JACK flatbed, do not risk using cheap alternatives. These are precision-made and ensure your machine runs at optimal speed without vibration.

A

Anonymous

Mar 02, 2026

Rating: 4/5

Good value pack

The quality is excellent and they fit my F4 machine perfectly. I gave 4 stars only because shipping took a bit longer than expected, but the product itself is top-notch.

5 FAQ

Q: Do these come pre-wound with thread?

A: No, these bobbins are sold empty. You will need to wind your own thread onto them using your machine's winder or a separate bobbin winder.

Q: How many bobbins are included in one order?

A: Each package contains exactly 10 pieces of original JACK universal bobbins.

Q: Will these bobbins work with the JACK F5 model?

A: Yes, these universal bobbins are designed to be compatible with all JACK computerized flatbed series, including the F4, F5, and A4 models.

Q: Are these bobbins suitable for heavy denim fabric?

A: Absolutely. These bobbins are made from high-grade aluminum alloy specifically to handle the high speeds and tension required for heavy-duty fabrics like denim and canvas.

Q: Can I use these in a domestic home sewing machine?

A: These are designed specifically for JACK industrial computerized flatbed machines. While they are Class 15 style, we recommend checking your home machine's manual as industrial bobbins may have slightly different tolerances.

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