Rear steer axle systems place unique loads on steering components due to high articulation angles, rear axle traction forces, and the steering leverage generated by large tires. Traditional steering arm systems can allow fastener movement or bolt fatigue under repeated shock loading, especially in competition environments.
The Crane Axle interlocking steering arm system uses precision-machined keyed engagement surfaces to mechanically transfer steering loads into the knuckle body itself. This reduces stress concentration on mounting hardware and improves steering stability under extreme conditions. Combined with 8620 chromoly construction, the system provides improved impact resistance, fatigue life, and serviceability compared to conventional cast iron knuckle assemblies.