Los Angeles Abrasion Testing Machine for Aggregates

Steel drum abrasion machine with revolution counter that measures aggregate resistance to wear and impact using steel charge balls. Used in quarries, road agencies and ballast qualification labs.

Specification

Aggregate samples and a graded steel ball charge are tumbled in a rotating drum at 30 to 33 rpm, and the percentage loss through a 1.70 mm sieve gives the abrasion value. The machine is the standard reference for hardness of road stone, concrete aggregate and railway ballast. An automatic counter stops the drum at the preset revolutions.

Features

• Digital preset revolution counter with auto stop
• Heavy-gauge steel drum with removable shelf plate
• Dust-proof sealed cover with gasket
• Geared motor drive with brake
• Heavy angle-iron stand with safety guard

Technical Specifications

Drum size	711 mm dia x 508 mm long (internal)
Drum speed	30 to 33 rpm
Revolutions preset	0 to 9999 (typically 500 and 1000)
Shelf	Steel, 89 mm projection
Charge	12 steel balls 46.8 mm dia, 390-445 g each
Standards	IS 2386 Part 4, ASTM C131, C535, EN 1097-2
Motor	1 HP, 415 V, 3 phase, 50 Hz

Standard Accessories

• Set of 12 steel balls
• Sample loading tray
• Spare gasket