Table 1.
Specifications of an embryo-retaining polished rice producing system of vertical type with an abrasive & friction roller.

Equipment	Specification	Remarks
Capacity	Capacity: 1 ton/h	Abrasion & friction type
Shaft-roller with emery stones	Shaft-roller with emery stones
Metal	Stones: 6 number attached.
	Interval between stone and screen: 6.5 - 7.0 mm
Powers	System operating power: 15 hp	Two vertical mills in series
	Fans: 10 hp
	1st System for embryo-retaining polished rice: 960 rpm
	2nd System for embryo-retaining polished rice: 780 rpm