HC series of hydraulic motor-driven oil coolers feature low-fouling, non-louvered air fins. Fan motors may be operated at a variety of oil flows to reduce noise levels or simplify installation. Fan speed may be changed by increasing or decreasing the oil flow rate to the hydraulic motor driving the fan. Several models are available, with required flow ratings from 1.6 to 23.4 gpm and displacements ranging from 0.218 to 1.95 in.3 They are rated for maximum working pressure to 250 psi and maximum working temperatures of 250°F.

AKG Thermal Systems Inc., (919) 563-4871, bit.ly/hp1212akg