David Brown Girth Gear SETS SIZE RECORD

摘要

David Brown delivered a girth gear weighing more than 65,000 kilograms to FL Smidth Minerals for a mining operation in Zangezour, Armenia. The original order was delivered in early 2008, and the company is currently working on a second girth gear order for 2009. The single helical SAG mill girth gear, which is cast in four pieces, has 362 teeth, 0.75 DP, 863.6 mm face width, 12.4 m outside diameter and a 10.5 m diameter bore. It's manufactured from steel with a hardness range of 269/321 BHN, and gear teeth cut to AGMA grade 10.