Your site is not very good on mobile. Pdf is bad when pictures or text can be used easier.
L12 data sheet
https://s3.amazonaws.com/actuonix/Ac...+Datasheet.pdf
They have RC versions L12-R in 30 50 100 mm strokes. Add 52mm for the motor and control section.
30mm ranges mount hole lengths from 82 to 112mm
50mm ranges length from 102 to 152mm
100mm ranges length from 152 to 252 mm
They're available in gear ratios of 50:1, 100:1, 210:1
*** all info is as best i could find. i have no affilliation with them. i'm just trying to learn what i want to order**