https://shop.me.dk/webshop/gear-gearmotorer/bonfiglioli-gear-a-c-f-s/bonfiglioli-keglehjulsgear-a?ProductID=PROD32179
A 50 3 QF40 24 P112 B3
https://ancorp.com/product/4000177/
QF40-000-US - ANCORP | High and Ultra-High Vacuum Products
ISO-QF40 Unbored Stub Flange. Unbored Stub Flanges are manufactured with no weld prep and no tubing bore.
usancorphighultravacuum