As seen online:
“A rectilinear-motion bearing, for a table or slide of a machine tool or other apparatus having a V-shaped guideway, comprises a carrier in the form of a strip of sheet metal or synthetic plastic material of V-shape in transverse cross'-section or, alternatively, in the form of a pair of flat strips arranged adjacent the inclined walls of the guideway, each strip having therein a number of apertures 2, in each of which is mounted a roller 3.”
— from GB867755A - A bearing for a table or slide of a machine tool or other apparatus having a v-shaped guideway - Google Patents as of 3 September 2025