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Los Angeles Abrasion Machine Manufacturer,Supplier and Exporter in India

Product Code : EL-CL-8856
Jlab Export is a leading Los Angeles Abrasion Machine Manufacturer,and suppliers in India

The Los Angeles test tumbles graded coarse aggregate with steel balls inside a turning drum. It then measures how much of the stone has worn down to fines. This machine has a rolled steel drum 711 mm across and 508 mm long, turned at 31–33 rpm by an electric motor through a speed reducer.

Specifications

Test	Resistance of coarse aggregate to abrasion
Drum	Rolled steel, 711 mm inside diameter, 508 mm internal length
Drive	Electric motor through a speed reducer
Drum speed	31–33 rpm
Counter	Automatic, preset to a number of drum revolutions or a total working time
Abrasive charge	Ordered separately to suit the standard in use
Safety cabinet	Optional, with door opening switch, also in a noise-reduction version
Minimum order quantity	1 unit
Dispatch time	Usually 14–18 working days
Manufacturer	JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India

Aggregate Abrasion Practicals in the Highway Lab

Students start by washing and drying the aggregate, then grade it on Test Sieves into the fractions their test method asks for. A Sample Splitters (Riffle Boxes) unit cuts the bulk sample down to the test mass without changing its grading. The weighed sample and the ball charge go into the drum, and the counter is set.

When the run ends, the drum is emptied onto a tray and everything is sieved. The material passing the test sieve is the loss, and the abrasion value is that loss as a percentage of the starting mass. Teachers can test the same stone in the Aggregate Impact Tester and the Crushing Value Apparatus. The class then sees how one aggregate copes with wear, sudden blows and slow crushing.

Frequently Asked Questions

How many revolutions does a Los Angeles test need?
The test method sets the number, and it can change with the grading of the sample. The automatic counter is preset to that number of drum revolutions, or to a total working time if you prefer to work by time.

Is the steel ball charge supplied with the machine?
No. The abrasive charge is ordered separately, because the number of balls depends on the standard you follow and on the grading being tested. Name your standard when you order the charge.

What does the abrasion value tell an engineer?
It is the share of the sample, by mass, worn to fines by tumbling and impact with the balls. A lower value means a harder, tougher stone. Road specifications set an upper limit for each layer, with the strictest limits for surface courses.

Does the machine come with a safety cabinet?
It is supplied without one. A cabinet with a door opening switch can be added when you order. The same cabinet also comes in a noise-reduction version for labs where drum noise matters.

What mistakes spoil a student result?
Weighing the sample before it is fully dry, using the wrong grading or ball charge for the method, and losing fines when the drum is emptied. Collect the whole contents of the drum and wash the retained stone before the final weighing.