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Home » Products » Coal Testing Equipments » Hard Groove Grindability Apparatus

Hard Groove Grindability Apparatus

Hard Groove Grindability Apparatus
Hard Groove Grindability Apparatus
Product Code : SLE-HG-01
Brand Name : Spectro
Product Description
It is used for determination of grindability index of coal as laid down in Standards ASTM No. D-
409-51 and I.S. No. 4433-1967). In consists of a stationery grinding bowl of Iron/Steel with a
horizontal track in which run & stainless steel ball each of 25mm diameter. The balts are driven by
an upper grinding ring which is rotated at 19-21 revolutions per minute. The upper grinding ring
is connected to a spindle which is driven by an electric motor through reduction gears. Weights
are added to the driving spindle so that the total vertical force on the balls due to weights, shaft,
top ring and gear is equal to 29kg±0.225kg. The machine is fitted with an automatic Digital
display type machine is fitted with an automatic Digital display type set counter for stopping the
machine after 60 ±25 revolutions or any other preset no. of revolutions. Operable with the
available power supply of 220/240 volts, 50cycles AC.



E-41, Okhla Industrial Area, Phase-II, New Delhi - 110020, India
Mr. Prashant Gupta (Director)
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