Dorry Abrasion Testing Machine

This machine is used for determining the resistance of aggregate to wear by abrasion. Two specimen can be mounted simultaneously and then kept loaded by weights against a machined flat circular grinding surface. The grinding disc rotates at 28-30 r.p.m and two funnels release a continueous flow of Suitable sand for operation on 230 Volts, Single phase 50 Cycles A.C. Supply.