PURPOSE: To provide an axle housing tube which can save unnecessary material cost and weight, and satisfy expected functional requirements.
CONSTITUTION: The axle housing includes a tube 10 which is formed by casting. The tube is integrally cast so that it has a brake flange 14, a spring seat 13, a shock absorber pad 12, and an outer end for mounting wheel bearings. The wall thickness of the tube 10 is not uniform at the circumference. The wall thicknesses of upper and lower portions of the tube are somewhat greater than those of the side portions. The wall thicknesses of the upper and lower portions of the tube are sized to accommodate vertically oriented loads which are generally larger than horizontally oriented loads. The tube is cast from an iron alloy and is subjected to an austempering heat treatment process.
JIAN AZUUOORUDO
RANARUDO AI ROUZU
