Guide Specs

SERIES 66 BELT DRIVE, ADJUSTABLE PITCH VANEAXIAL FAN SK-880-66 NOVEMBER, 1997

The Belt Drive, Adjustable Pitch Vaneaxial Fan shall be manufactured by Hartzell Fan, Inc.®, Series 66. Standard sizes are 35" through 79". The fan shall be a rugged one-piece design containing the propeller, the motor, and the vanes. The fan shall be packaged, completely assembled and ready to install.

The adjustable pitch vaneaxial propeller shall be an airfoil design, 9-bladed, cast of 319 aluminum in compliance with Federal Specification QQ-A-601E and ASTM B26. The individual blades shall be secured to the hub with a lockwasher and nut. The blades can be quickly adjusted for future changes in capacity without removing the propeller from the fan shaft. Propellers shall be retained on the fan shaft utilizing a split taper bushing.

All sizes have rolled steel flanges continuously welded to the steel drum. Fan shafts shall be ground and polished carbon steel. Bearings shall be located in a drive compartment out of the airstream. Bearings shall be heavy duty, self-aligning ball or roller bearing type mounted in pillow block housings. Bearings shall have extended lube lines and shall be relubricable for continuous service. Minimum L-50 bearing life at maximum catalog speed, horsepower, and static pressure: 500,000 hours (horizontal). Minimum L-50 bearing life at maximum catalog speed, horsepower, and static pressure: 250,000 hours (vertical). Belts shall be "V" type, heat, oil and static resistant and sized for continuous service. Motor position shall be designed for mounting in any position from horizontal to vertical. Fixed pitch drives shall be standard.

Fan housings shall be minimum 3/16" thick rolled commercial quality, carbon steel and continuously welded in compliance with AWS D1.1 standard. Standard surface coating system shall be phosphatized surface preparation with an industrial grade air dry enamel paint.

The fan assembly shall be dynamically balanced at the Hartzell factory prior to shipping. Fans shall be balanced in accordance with AMCA Standard 204-96, fan application category BV-3 (comparable to Grade G6.3). Fans shall be manufactured in accordance with Hartzell's standard quality assurance procedures. Fan performance shall be based on tests conducted in Hartzell's AMCA accredited test laboratory in accordance with the latest revision of AMCA Standard 210 for air performance and AMCA Standard 300 for sound.