Many machines although having different names actually use some same machine parts manufactured by the one company, this means you can use same bobbins in some cases, however I recommed always checking which bobbin is right for your particular machine first. Over the years I have owned a Singer, Liberty, Jamome, and two different Brother machines, they all used the same needles and also the Universal needles. It seems like there are no rules but there are in fact. You may not do much damage to your bobbins but you may do permanant damage to the inside of your bobbin case, if metal on metal is spinning around in there at a 100 miles an hour, if it is too tight for instance, you will wear something out pretty fast! One gets used to the way your machine sounds and sews, changing to the correct needle, often you can hear the difference! I write this for anyone new to sewing and machines etc as any info on machine maintainance is good info IMHO.
Gal