Hydraulics moves the ramps and platforms that allow a single carrier to hold multiple cars. Naturally, heavy loads are involved, and the hose must tolerate brutal over-the-road conditions. Typically, car carriers have relied on SAE 100R1 hydraulic hose for pressures to 2250 psi for 3⁄8-in. hose (to 2000 psi for 1⁄2-in. hose) and SAE 100R2 for pressures to 4000 psi for 3⁄8-in. hose (3500 for 1⁄2-in. hose). However, the pressure rating for one manufacturer’s proprietary hydraulic hose is 2750 psi for the 3⁄8-in....
More