Advanced Severe-Duty Rubber Suspension

Features & Benefits

  • Recommended for mining applications
  • Optimized design for robust durability
  • Progressive rate springs and shear springs provide a unique balance of unloaded ride quality and loaded stability
  • Fabricated walking-beam design equalizes axle loading while providing optimal clearance, axle travel and weight
  • Capacities from 37,000 Kg to 48,000 Kg


In addition to its excellent durability, ULTIMAAX® delivers enhanced stability, handling and ride quality even in the most severe-duty environments where vehicles encounter harsh and unexpected ground conditions. The integration of Hendrickson’s proven walking (equalizing) beam technology, with its patented progressive rate spring, provides a balance of loaded stability and unloaded ride quality even in the most rugged environments.


Suspension Rating (kg) 37,000 48,000
GVW Approval As per Vehicle OEM As per Vehicle OEM
Diagonal Articulation1(mm) 444.5 444.5
Ride Heights (mm) 241 to 330 241 to 330
Axle Spacing (mm)2 1350, 1450 1350, 1450
1. Suspension articulation may exceed vehicle’s capability and may be limited by vehicle manufacturer; vehicle manufacturer installed axle stops may restrict suspension’s articulation.
2. Contact THSL for availability of additional beam lengths.
For additional details regarding specifications, applications, capacities, operating service and maintenance instructions, refer to applicable THSL technical literature. Actual product performance may vary depending upon vehicle configuration, operation, service and other factors. U.S. and foreign patents granted and / or pending.
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