Hadco axles are manufactured from the finest quality C1040 hot rolled steel. When greater strength is required due to excessive overhang, axles can be made on special order from 4140 hot rolled alloy steel. Axle spindle dimensions are shown in hub series section. Axle capacity cannot exceed the spindle capacity. All axles are furnished complete with spindle nuts, washers and cotter pins, and Z rings where required.

   DROP   

Hadco axles 2&1/4" square or less may be manufactured with 2, 3, 4, 5 and 6 inch drop.

   CAPACITY   

All axle and axle component capacities are based upon gross load measured at the ground.

   CAMBER   

All Hadco straight axles over 70 inches long (2&1/4" sq or less) will be cambered 1&1/2° (Nominal) at center unless otherwise requested. Steering axles are cambered 1&1/2° (Nominal) at the spindle. All dropped axles are cambered 1&1/2° (Nominal) at the drop.

   TRACK   

Track is the distance in inches from tire centerline to tire centerline on axle assemblies with single tires. On duals, track is measured at the centerline between the dual tires.

Difference between track and axle length is shown in hub series charts.

   TRACK VS. OUTSIDE TIRE WIDTH   

Outside tire width of axle assemblies with single tires is track plus the width of one tire plus one (1) inch allowance for camber.

   OVERHANG   

Overhang for axles with single tires is the distance from the centerline of the spring to the centerline of the tire.
Overhang for axles with dual tires is the distance from the centerline of the spring to the centerline of the duals.

   OVERHANG VS. AXLE CAPACITY   

Axle beam carrying capacity is reduced as the overhang is increased. See Axle Beam Capacity Chart.