Introduction
Girth gears (ring gears) are large ring gears that are normally fitted to the outside of ball mills or rotary kilns to provide the primary rotational drive, which is required to be operated for a long time, so the quality requirements during the actual production for the big gear ring are very high Girth gears are applied in various types of horizontal mills, rotary dryers, and rotary kilns
Advantages
1. Special Heat Treatment Technology
Great Wall Steel Casting adopts special heat treatment technology to optimize structure, improve hardness and enhance impact resistance of girth gear.
2. Long Service Life
Great Wall Steel Casting adopts high strength steel to produce girth gear. Firstly characteristics optimization of rotary kiln is done to guarantee its stability during long time operation, also to prolong its working life.
3. Factory Price Custom & Specification
|
Specification |
|
|
Item |
Casting Steel Girth Gear |
|
Pressure angle |
Customized |
|
Material |
Alloy steel & Carbon steel |
|
Application |
rotary kiln, ball mill, rotary dryer,etc. |
|
Packing |
Seaworthy plywood packaged on stell pallets or as customers request |
|
Delivery date |
Depends on the amount and dimension of products |
Why quality is so important?
Total Girth Gear installation cost survey
Calculation example:
Kiln size 5.0 x 90 m Production: 4500 tpd
Estimated cost of parts: EUR 450.000,- (27%) Girth gear + springs etc.
Est. mech. erection costs: EUR 130.000,- (8%) 29% of parts cost
Estimated consequential loss : EUR 1.080.000,- (65%) EUR 4500/hour in 10 days
Total installation costs: EUR 1.660.000,- (100%) Parts 27% Consequential 65% Mech. 8%
Conclusion:
The cost of the Girth Gear is only a "piece of the cake compared with the total substantial installation cost.
Long term solution with Great Wall Casting quality is the best solution to ensure a beneficial investment.
How to Install the girth gear(rotary kiln):
The girth gear is placed near to a kiln tyre so that it is accurately aligned with the rotary kiln axis, with minimal wobble. It is normal for the nearby tyre to be fixed in position with thrust rollers, so that as the kiln expands on warming up, the turning girth gear position remains fairly constant, while the nose and tail of the kiln expand outward.

Price:
Price 100 INR / Kilograms
Minimum Order Quantity : 500 Kilograms
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Surface Treatment : Polished
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Material : Iron
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Surface Treatment : Polished
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Minimum Order Quantity : 500 Kilograms
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Surface : Polished
Material : Iron