Linear Guide, Single Shaft, 1BA, Industry Standard Round Shafts, ASB Support, 2 Pillow Blocks, 1 in, 3000 lbf Dynamic Load Capacity. RoundRail linear guides feature Thomson’s patented self-aligning Super Ball Bushing Bearings with up to 216X the life or 6X the load capacity of conventional bearings. It is end supported for gantry style or ‘bridge’ applications and it's used to provide increased stability or torque resistance in linear system applications. You can download the product's 3D model below.