Description
The L A abrasion machine is used to measure the degradation of mineral aggregate of standard gradings resulting from a combination of actions including abrasion or attrition, impact and grinding in a rotating steel drum containing a specified number of steel spheres. The test is widely used as an indicator of the relative quality of various sources of aggregate having similar mineral compositions.
M&L Testing Equipment’s design follows the ASTM-preferred design:
- Features a welded, structural-steel frame, fabricated .5″-thick (913mm) abrasion-resistant steel drum, a removable shelf, bolted to the drum and a balanced drum assembly for easy rotation by hand.
- The enclosed chain drive rotates the drum without a conventional slip clutch. This positive drive delivers greater testing accuracy.
- The self-contained worm-drive, motorized speed reducer has anti-friction bearings and sealed lubrication.
- The 1hp, electronically-controlled motor is equipped with large, push-button controls and an automatic overload cutoff.
- The controls can be removed from the Abrasion Machine and mounted outside a sound enclosure or mounted on a nearby wall. Unit includes user-configured, revolution counter, a material catch pan and one abrasion charge consisting of 12 hardened-steel balls. Dimensions: 39″ x 29″ x 37″ (991 x 737 x 940mm).
