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A winding highway takes a turnA winding highway takes a turn

On-Highway Drives RCX Viscous Fan Clutches for On-Highway Vehicles

Viscous fan clutch rcx

From the global engine cooling pioneer comes the most cutting-edge, heavy-duty fan drive yet. Designed specifically for over-the-road and vocational trucks, the bracket-mounted RCX fan drive features a durable rigid design, industry-leading low-speed controllability, lower off speeds and Cold-Start Disengagement (CSD™) technology. Due to the integrated mounting bracket it has as decreased risk of damage due to belt failure.


  • Heavy-duty trucks
  • Medium-duty trucks
  • Vocational trucks
  • Buses
  • Specialty on-highway vehicles
  • Variety of off-highway equipment

RCX Specifications

Maximum torque
230 N-m
Fan blade capacity
Configurations of up to 13 blades
711-864 mm [28 – 34 in.] diameter
Engine horsepower range
150-600 kW [200-800 hp]
Drive mass
9 kg [19.8 lbs.] (depending on the shaft)
Drive diameter
275 mm [10.83 in.]
12v and 24v
Typical engine displacement
10-15 L

Features & Benefits

  • CSD ensures more efficient operation and low fuel consumption
  • Easy to install and maintain
  • Decreased risk of damage due to belt failure due to integrated mounting bracket 
  • Maximum fuel efficiency and available engine power with less noise
  • Excellent controllability and lower off speeds
  • Fully-variable operation cools engine only as needed, reducing noise and parasitic loss while optimizing fuel economy
  • Maximum uptime and long life
  • Maintenance-free
  • High-quality bearing and durable design

Video of Product

The RCX's unique reservoir design prevents engagement at startup, reducing noise and enhancing engine and cab warmup -- especially during cold weather. Its low-speed controllability maximizes fuel efficiency and horsepower while reducing noise with smooth modulation. 

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