Bobbins For Domestic Singer Sewing Machines

There are several Singer bobbins which look very similar, but which have subtle differences that are important to the correct operation of the machine. It is important to ensure that you have the correct bobbin.

You should not use metal bobbins in machines designed for plastic, or vice versa, you should not use plastic bobbins in machines designed for metal ones.

Singer Bobbin Types

Class	Simanco #	Metal/Plastic	Notes	Photo
9W Bagel	202053	Metal
12 O.S.	49	Metal
28 V.S.	8228	Metal
15 Long Beak	2073	Metal
15	2518	Metal
15	81348	Plastic
15J	85128	Plastic	As 15 with thinned domed edges
66	32522	Metal
66P	172222	Plastic	Same size as 66
66P Apollo	172336	Plastic	Same size as 66
221	45785	Metal	9W-7, 301, 221, 222K
20U	55623	Metal
Touch N'Sew	163124	Plastic
Centaur	181551	Plastic
Centaur II	312956	Plastic
Sure Fit		Plastic
Class M	18034	Metal	Industrial
400W	270010	Metal
Magic Tailor	32438	Plastic

Outline Dimensions

Bobbin Dimensions

Bobbin Class	Simanco #	A	B	C	D	E
12		1-1/16"	1-3/8"	1-7/32"	3/32"	19/64"
28	8228	1-1/8"	1-11/32"	1-7/32"	1/8"	3/8"
15	2518	3/8"	15/32"	27/64"	5/16"	13/16"
66	32522	5/16"	27/64"	13/32"	5/16"	13/16"
Apollo	172336	9/32"	27/64"	27/64"	21/64"	13/16"
221	45785	1/4"	19/64"	19/64"	5/16"	7/8"
20U	55623	5/16"	23/64"	23/64"	19/64"	53/64"