"M" size bobbins.

[chisel]

18 hours ago, toxo said:

Same as the ones @Constabulary linked to above. Here's your part number. Are you saying that you've measured them and the actual height is 10.9mm?

CKPSMS Brand - #B9117-563-000 Large Steel BOBBINS Compatible with JUKI LU 563 1508 1510 1560 1565 Singer 211U G Walking Foot and Double Needle Machines (50PCS) : Amazon.co.uk: Home & Kitchen

Sorry, my mistake. I had the diameter correct but the B-9117-563-000 bobbin thickness is 11.7...I need to buy a digital caliper or new reading glasses. I have black bobbins from 2015 and new chrome ones purchased earlier this year and there are no dimensional differences between them.

Edited November 9, 2024 by chisel

[toxo]

6 hours ago, chisel said:

Sorry, my mistake. I had the diameter correct but the B-9117-563-000 bobbin thickness is 11.7...I need to buy a digital caliper or new reading glasses. I have black bobbins from 2015 and new chrome ones purchased earlier this year and there are no dimensional differences between them.

No worries. Just hoping the 11.4 will fit. 

[nylonRigging]

I got to say, this forum never fails to offer info to pick-up on. I never really paid much attention to M-Bobbin sizing. of my machines running 3 of them use daily are M-bobbin . ( 2 ) consew ( 1 ) juki  . I just buy the same M-bobbins that I use in All them. They all seem to work satisfactory sew great, but when I get some time I will put a Mic. to some of them and check size variation.

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[toxo]

13 minutes ago, nylonRigging said:

I got to say, this forum never fails to offer info to pick-up on. I never really paid much attention to M-Bobbin sizing. of my machines running 3 of them use daily are M-bobbin . ( 2 ) consew ( 1 ) juki  . I just buy the same M-bobbins that I use in All them. They all seem to work satisfactory sew great, but when I get some time I will put a Mic. to some of them and check size variation.

.

Never had a big bobbin before. Just going on the size of the ones that came in the machine. There's  a bit of movement when I press down  so I'm thinking the extra .4 will be OK.