Clarified fitting skate

[ansyolitico]

Hi.
I wanted to ask you, to mount the gmz(30) nsk series nah with screw from below you have to use a m8? because from catalog I see thread m10 but also ødrill from 8.6 mm, I searched and there are no codes to identify a skate with only passing hole, so I guessed right?

but if you use m8 in theory should not keep less? or are the declared forces calculated with the m8?

allego screenshot manual

 

[meccanicamg]

all skates of all manufacturers with universal fastening version, have the suitable preforum to pass the screw of a measure less than the fastening thread from above.
If you have m10 fillets, it's a m8.
you should calculate with the eurocode 3 standard what type of screw to mount and what class to use.
certainly if I put 4 m10-8.8 I could replace them with 4 m8-10.9.
loads are related to the duration of roller or skating systems. with good probability the filet system keeps more than the rest.

 

[ansyolitico]

Thank you.