Frequent question: What class is a bobbins SA156?

What is a bobbin Class 15?

Style A (Class 15) bobbins are sometimes called universal bobbins. They are used with home and small commercial machines for garment sewing and embroidery. Style A, also known as Class 15 bobbins are used with home and small commercial machines. Thinner thread sizes, like Tex 16 are normally used for embroidery.

Do Brother sewing machines need special bobbins?

This machine uses SA156 bobbins which are class 15 type bobbins. Use of any other bobbin may result in injuries or damage to the machine. We recommend the use of Brother genuine parts and accessories.

Are metal bobbins better than plastic?

Plastic bobbins can become compressed in the center causing the bobbin to distort. With metal bobbins the thread may get “stuck” causing increased bobbin tension or even cause the bobbin to “jump” in the bobbin case.

Do all bobbins fit all sewing machines?

There is no such thing as a universal bobbin, meaning no single bobbin will fit every sewing machine. Some sewing machines tolerate a slightly different bobbin better than others, but using the incorrect bobbin will most likely affect the stitch quality of your project, and could result in damage to your machine.

Do bobbins come in different sizes?

Bobbins not only come in different sizes, but also in metal as well as plastic, and empty as well as pre-wound. While machines can only use one bobbin size, whether it is plastic or metal does not typically matter, however consult your machine manual to be sure.

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What is the difference between a 15 and a 15J bobbin?

They look almost identical, but class 15 bobbins have flat ends, while class 15J bobbins have slightly curved ends. Sometimes they appear to work interchangeably, but even if they fit into your sewing machine, there is a risk of them jamming your machine up and causing major damage.

Can I use metal bobbins in Singer 4423?

Don’t use metal bobbins! As a professional costumer, metal bobbins can hurt these machines and can make your threads break in the middle of a seam. … I bought the M/N 4423 and need additional bobbins.