Ball Mill/SAG/AG Mill Girth Gear
Ball Mill/SAG/AG Mill Girth Gear
Ball Mill/SAG/AG Mill Girth Gear
Ball Mill/SAG/AG Mill Girth Gear
Ball Mill/SAG/AG Mill Girth Gear
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The Design And Manufacturing Standard Of Grinding Mill Girth Gear

1.Material standard

Complying with the American Society of Testing Material and the International Standardization Organization (ASTM&ISO) standards ANSI/AGMA 2015 and GB/ T10095-2008 or according to the requirement by the user. 

2.Manufacturing standard of girth gear
A G M A6114—2006 (Metric) Accuracy class, calculating according to Q8 accuracy class, processing according to Q10 precision class, or according to the requirement by the user's drawings. 
3.Hengin's mill girth gear


Girth Gear
Standard Type structure  
Max modulus
Max Hardness
Max  Size Max weight
ANSI/AGMA 2015  GB/T10095-2008 Casting Whole, valved Q10 50 HB350 14500mm 14400Kg

4.Hengin's experience
Based on the experience of casting, heat treatment, machining, gear manufacturing and equipment operation feedback, our company has three kinds of girth gear casting materials whose chromium, nickel and molybdenum components are different that meet the three different design strength and hardness requirements. Factors such as performance, modulus, pressure angle and helix angle, tooth width, tooth surface contact pressure, and axial force are considered to optimally design the grinding mill girth gear. For milling transmission, a 25° pressure angle is used to increase the milling capacity by approximately 10% compared to a 20° pressure angle. The helix angle is also limited to 7.5° to maintain the control of the axial force. Because the helical gear transmission is larger than the spur gear transmission which has the same diameter, the bending strength and contact strength are greatly improved, the transmission is stable, the noise is small and the service life is long. 

1Mill Girth Gear Main Technology 2Mill Girth Gear Manufacturing Process 3Mill Girth Gear Casting Process 4Mill Girth Gear Machining Process 5Mill Girth Gear Heat Treatment 6Mill Girth Gear Testing Accuracy 7Mill Girth Gear The Inspection 8Mill Girth Gear Lifting Storage 9Mill Girth Gear Maintenance 10Reasons for choosing HENGIN products
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