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Mill Pinion

Mill Pinion

Mill Pinion is the carrier responsible for the rotation of the ball mill, and the reducer transmits the kinetic energy to the ball mill barrel through the pinion gear and the large gear.

Taking a 1.83×7m ball mill as an example, the ball mill itself weighs more than 30 tons. If steel balls and materials are added, the entire ball mill may be about 50 tons. Such a heavy ball mill relies entirely on Mill Girth Gear and pinions to transmit energy. It can be imagined how much force the big gear and the pinion need to bear, which also determines that the material of the big gear and the pinion must be very good.

Mill Pinion

After the alignment of the large ring gear is completed, position the pinion gear device according to the requirements of the drawings, re-measure the center height of the pinion gear with a level gauge, and replace the pad iron to adjust the elevation if necessary.
Use a feeler gauge to roughly find the tooth top clearance and tooth backlash, and install the diaphragm coupling, main reducer, auxiliary transmission device, and main reducer lubricating oil station.
Grout once for the pinion unit anchor bolts.
After the first grouting strength reaches 70% of the design strength, use the auxiliary transmission disc to grind, and re-measure the runout of the large ring gear again, and then the fine alignment of the pinion can be started.
In most fields, feeler gauge and red powder are used to detect the contact of gears. This detection method has no basis for adjustment. It can only roughly determine the adjustment amount of the bearing seat based on experience, which is time-consuming and labor-intensive.

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