A flat view of an empty sandpitA flat view of an empty sandpit

Off-Highway Drives HT/S Advantage On/Off Pneumatic Fan Drives

Pneumatic Fan Drive

We started with a technologically advanced hub bearing assembly optimized for durability. We added a PFD (Piston Friction Disc) featuring the System Sentry®. This patented device reacts to heat build up caused by fan drive slippage or fan obstructions. When it senses excessive heat, the System Sentry releases, disengaging the fan drive before extensive damage occurs to the cooling system.


  • Variety of off-highway equipment
  • Variety of on-highway equipment

Features & Benefits

  • Air-engage operation enhances durability for high run-time applications
  • Long-life air cartridge and double O-ring seals prevent leakage for enhanced reliability and long life
  • Robust design ideal for harsh environments and better protection against heat damage

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