The HDRT heavy duty ring slide and track system from Bishop-Wiscarver combines the flexibility features of the HepcoMotion’s PRT ring track system with the size and strength of the HDS slide system to support loads of up to 8.992 lbs. According to the company’s presss release, the HDRT offers a large range of single edge rings from 20.15-65.19" in diameter with an optional integral gear. Internal and external V-rings are compatible with three sizes of bearings and two lubricators for increased load and life and are available in seven sizes and two precision grades as well as stainless steel. Gear cut rings and pinions are also available. The HDRT system utilizes one size of double edge ring segments and are supplied with back plates and joint blocks according to design. One piece slides of up to 4m can be butted together to created unlimited lengths. Two types of carriages are offered with HDRT, including a fixed center version and a boogie carriage. The fixed center version can be used on track systems with uni-directional bends of common radii and on double-edge rings and segments. The Bogie carriage swivels on a lubricated-for-life, play-free axial/radial ball bearing for use with "S" bends or bends with varying radii.