Deval Abrasion Testing Machine

For the determination of resistance of aggregate to wear by abrasion two hollow cylinders, closed at one end and provided with tightly fitting covers at the other end. The inside diameter of the cylinder 20cms and 34cms depth. The cylinders are mounted on a shaft at an angle of 30 degrees with the axis of rotation. The shaft rotates at 30-33 r.p.m through a reduction gear, coupled to a motor. Suitable for operation on 440 volts, Three phase, 50 cycles , A.C. Supply. Supplied complete fitted with a counter and push button starter, complete with Abrasive charge: Consists of 12 Nos. 
Cast Iron spheres of steel spares (steel balls. Hardened, approximately 48mm dia meter, each weighing between 390-445 gram.