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

Off-Highway Drives RCV250 variable-speed drives for off-highway machines

viscous fan drive rcv250

Lighter with a compact design, RCV250 variable-speed fan drives are engineered to turn larger fans that require higher torque. The RCV250 is an integrated belt-driven fan drive that can be mounted in various locations to eliminate the vibration inherent in traditional driveshaft-mounted fan drives.


  • Generator sets
  • Agricultural tractors
  • Cranes
  • Construction equipment
  • Variety of other off-highway equipment


Maximum torque
Up to 250N-m [2,113 in.-lbs.] (on/off)
225 N-m [1,991 in.-lbs.] (fully variable)
Fan blade capacity (diameter)
Configurations of 6 – 13 blades
660 - 1092 mm [26" – 43 in.] diameters
Engine horsepower range
260 – 600 kW [350 – 800 hp]

Features & Benefits

  • Fully variable-speed control reduces operating noise, lowers fuel costs and provides cold weather performance advantages
  • Innovative design provides for faster response time and lower off-speed, decreasing parasitic loss to preserve horsepower and provide effective cooling
  • Compact and lighter weight vs. competition with Horton’s one-piece design for ease of installation
  • Industry-leading, double row angular contact (DRAC) bearing for increased durability and product life
  • Smooth fan engagements and fan modulation
  • Maintenance free

Related Documents

Video of Product

This video illustrates the noise reduction and fuel consumption savings of the Horton Gen Set variable speed fan drive operating at 100% engagement, 72% engagement, and 9% engagement.

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