The C-rail, bearing set 8 D14 3R is used as a bearing set for self-assembly of C-rail, bearing units. To attach the bearing sets to the C-rail, slide profile 8, countersunk holes for the fixing screws must be drilled 64.0 mm apart, as well as a through-hole of d = 22.5 mm for the four-hole nut. The position of the holes is marked by a scribed line in the slide profile. In general, C-rail systems are variable and safe track roller guides and are designed in particular for the assembly of lifting and sliding doors. The pre-assembled track rollers are durable and maintenance-free. The C-rail, bearing set 8 D14 3R can be subjected to a maximum tensile load of F_max = 1,500 N and pressure load of F_max = 750 N. With the 3R variant, the bearing set can also be adjusted backlash-free using an eccentric.