Horton's WindShift Modular Fans feature clamshell knuckles that clamp the blades at precise pitch angles
Horton has introduced the WindShift Modular Fan for the off-highway, industrial and other specialty markets.
WindShift Modular Fans’ clamshell knuckles clamp each blade to a 0.25-inch (6-millimeter) steel center disk. Customers specify blade configuration and pitch angle, center disk diameter and rotation. Equally spaced blade configuration options are offered with 6, 7, 8, 9, 11 or 13 blades. Staggered blade configurations, which help to reduce noise, are available upon request. Pitch width ranges from 3.08 inches (78 millimeters) to 6.32 inches (161 millimeters). Fan diameter ranges from 30 inches (762 millimeters) to 48 inches (1219 millimeters). Fans are available in clockwise and counterclockwise rotation. Standard pilots range from 1 inch (25 millimeters) to 5 inches (127 millimeters). Maximum tip speed is 18,000 feet per minute (91 meters per second).