Cooling Tower Gear Boxes
Just like the parts in motors, as water seeps into your Gear Boxes, the oil is diluted and the bearings and seals are compromised. DRB supplies Amarillo® and Sumitomo® Gear Boxes to replace any Gear Box not working properly. We offer direct replacements for Marley® Gear Boxes.
The backlash can be checked by rotating the pinion shaft back and forth and, before the gear teeth engage fully, noting the amount of free rotation. The endplay can be checked by noting the amount of movement in the Gear Box output shaft when pulling up and down on a fan blade tip. While some backlash and endplay are necessary for proper gear life, excessive backlash and endplay mean it is time to replace the Gear Box. When in doubt, contact a qualified service contractor.