ROLLER A. 1H5049 - Caterpillar

Illustration 1 g00547912
(1) Planetary carrier (2) Steering housing (3) Ball joint (4) Tie rod (5) Piston rod (6) Steering cylinder (7) Steering axle (8) Cylinder chamber (9) Piston (10) Cylinder chamber (11) Axle bridge (12) Bolt (13) Washer (14) Port (left turn) (15) Port (right turn)
Illustration 2 g00547913
(5) Piston rod (7) Steering axleSteering cylinder (6) is part of axle bridge (7) of steering axle (8). Oil flow to the steering cylinder comes from the steering valve through the bottom swivel to ports (14) and (15) .The steering cylinder generates linear movement to the left or to the right. This movement is transmitted from piston rod (5) to tie rod (4), steering housing (2), planetary carrier (1) and the wheels.The steering cylinder is a double acting cylinder with continuous piston rod (5). Piston (10) has faces of equal size. When the steering cylinder is centered, the piston rods extend equally on both ends. This results in equal working areas in cylinder chambers (9) and (11). The steering cylinder is pressure balanced. Equal forces are available in both actuating directions and equal steering angles to the left and right.When the steering wheel is turned, pressure oil from the steering valve goes through the bottom swivel to port (14) or (15) of the steering cylinder. Pressure is applied to the respective piston area and the piston extends to the left or right. At the same time, the hydraulic oil in the opposite cylinder chamber goes back to the steering valve and the hydraulic tank.The adjustable steering angles are limited by bolt (12) and washer (13) that contacts the steering housing.