Viewing a single comment thread. View all comments

dr_xenon t1_iz0f052 wrote

I’m guessing this isn’t high speed or high precision movement.

8mm is 0.315”. 5/16” is 0.3125”. You could probably use a pulley with 5/16” bore and hit it with a 8mm drill bit. Set screw will take up the rest of the slop in it.

McMaster sells pulleys with 5/16” bore for under $20. Get the drill bit there too.

2

Ag99JYD OP t1_iz0ksoc wrote

5/16 is a good idea, thanks. I think the problem I'm having is everything I'm finding for a v belt (mostly A type, 1/2") is on a 1/2" or larger bore, while the smaller pulleys (6mm and up) use PU Round belts.

2

dr_xenon t1_iz0lz21 wrote

McMaster has them for 2L or 3L belts which are 1/4” or 3/8”, with 5/16” bore.

Try part 6245k314 for example.

2

Ag99JYD OP t1_iz0ni1n wrote

Oh, that is awesome! Thanks!

2

John_B_Clarke t1_iz1uybs wrote

Is the display balanced? Doesn't have to be exact but the closer it is the easier it is for the motor to turn.

1