Elecon have manufactured and supplied 8.5E 10 Mill Gear box for Coal
Grinding in Power Plants. This have been developed against the existing
imported unit for easy replacement without disturbing position of Motor
and Coal Mill.
This is a two stage gear box having input shaft horizontal
and output shaft (having the flange coupling) vertically upward. The
1st stage is of bevel gearing and 2nd stages is of helical gearing.
The housing is made out of S.G. Iron grade GGG 400.
The Spiral Bevel & Helical pairs are made from high tensile carburising
alloy steel, 17CrNiMo6 as per DIN 17210 - Case hardened to 60 ±
2 HRC. The Helical teeth profile is ground to class of accuracy 6 as
per DIN 3961-63. The Spiral Bevel pair is hardened and lapped. The slow
speed shaft is made EN 24. The output flanged coupling is made out of
CK 60 N as per DIN 17200.
Both the pairs are supported on anti-friction Bearings.
On low speed there is a spherical roller thrust bearing placed at the
bottom of the shaft which take care of the static load and dynamic load
due to coal mill.
The gear box is installed with existing Lub. Oil system
for providing necessary amount of oil to various gear meshes and bearing
thereby resulting into smooth and trouble free operation.
Technical specifications :
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