You Get two hardened chromed linear rails 60" long each, and each rail has two 20 mm (Slightly larger than 3/4") open pillow block bearings that ride over the underside supported 60" rails. And four bolt down end supports.
Quantity of rails 2 underside supported 20mm chromed hardened rails
Support pieces per rail at 5" long per piece = 11 for a total undersupport of 55" under the 60" rails with bolt down end supports on each end of each rail.
Number of supports bolted to the underside of each rail = 5
Number of supports not bolted to the underside of each rail = 6 but linked to each other by 1/2 moon links
Undersupports are linked with a half moon end locks.
Number of bolt down holes for bolting to your machine frame per undersupport =4each for a total per rail of 80 bolt down positions- sized for up to 1/4" bolts.
End supports provided= quantity 4, bolt down and clamped on end supports made of tough-Fiberglass reinforced nylon.
Pillow block open linear bearings provided, total= 4 (two per Rail) so that you can space them to fit your gantry.
Pillow block housing material = Tough-Tough, Tough-Fiberglass reinforced NYLON
The pillow block top bolt surface is left un-drilled for your ease of fastening your gantry. (can be drilled and tapped or just drilled and bolted to the integral flanges.)
Bearing brand VXB 20mm open linear with oil resistant rubber wiper on each end.