Girth gears are large ring gears which are normally fitted to the outside of ball mills or rotary kilns to provide the primary rotational drive,which is required to be operated in a long time. So, the quality requirements during the actual production for the big gear ring are very high. Girth gears are applied in the mining, cement, minerals industries used in various types of horizontal mills, rotary dryers, rotary kilns and other gear ring applications in heavy processing. With continuous efforts on process optimization on the basis of rich manufacturing experience and advanced equipment, CHAENG is able to offer high quality cement kiln girth gears according to users' drawings and requirements. 

Item	Introduction
Material	Carbon alloy, low alloy steel
Casting process	Sand casting
Test	Ultrasonic Testing (UT), magnetic particle testing (MT), penetrant test (PT) X-ray inspection and so on
Machining	rough machining, semi-finished machining, finished machining
Certificate	ISO9001:2015
Application	The products can be widely used in the area of ball mill, rotary kiln, industrial rotary dryer etc.
Heat treatment	Normalized,Normalized and Tempered, Quench and Tempered.

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