Deval Attrition Tester
For the determination of resistance of aggregates to wear by abrasion.
Specification:
It consists of two hollow cylinders closed at one end and provided with tight fitting covers at the either end. These cylinders are mounted on a shaft at an angle of 30 degree with the axis of rotation of the shaft.
The shaft rotates at 30-33 rpm through a reduction gear operated by a motor and is provided with a revolution counter. Complete with abrasive charges consisting of 12 Nos. Hardened steel balls of 48mm. dia. Suitable for operation on 440Volts, 3 Phase, 50 cycles. A.C. Supply.
