Made - NAWA Engineers & Consultants Pvt. Ltd.

Manufacturing Year - 2012

Description -

The mechanism involved is very simple. The rock to be crushed is fed through the hopper and a feed tube onto the centre of a closed rotor. An Ideal Tertiary Machine for Concrete Aggregates. Manufactured Sand. Asphalt Mixing. Road Base Materials.

Features - Easy portability and quick installation with minimum support structures. Variable capacity models for tertiary applications. RockonRock technology minimizes wearing of parts, hence minimum operating and wear costs. Excellent cubicle shape product. Consistent product gradation. Low investment. Simple maintenance. Quicker replacement of worn out parts lesser downtime. Retrofit for conversion to Rockonsteel for less abrasive rocks

How It Works?

The mechanism involved is very simple. The rock to be crushed is fed through the hopper and a feed tube onto the centre of a closed rotor. The rotor spinning at high speed throws the material with a great centrifugal force. When the accelerated rock hits the stationery rockbox, known as rockonrock principle, it breaks by impact along the natural fault lines resulting in a cubical shaped product which falls freely by gravity on to a conveyor belt below. The rockonrock principle simulates the nature's way of impact and grinding that occurs in generation of particle shape in natural sand. The VSI crusher thus comes out a winner as producer of quality aggregates as well as Manufactured Sand, which is very close to the natural sand in particle shape and gradation.

RetroFits for RockonSteel

NAWA offers anvil rings and rock box combinations to convert the rockonrock to rockonsteel models for lesser abrasive rocks to get higher product yield. The retrofits can be quickly installed in the existing rockonrock models without any changes in the machine, and can be conveniently done at site. The retrofits give the flexibility to change over between RockonRock and RockonSteel meet the customer's product needs.

QUALITY STANDARDS FOR AGGREGATE

The aggregate quality specifications for road building under Ministry of Road transport & Highways (MORT&H) and NHAI calls for a total combined flakiness and elongation index of <30%. This specification is considered to be world class by crushing equipment manufacturers and quarry operators. Quality of aggregates produced depends on many factors like: type of stone crushed, reduction ratio, crushing chamber design, choke feeding, etc. The best way to get good shape in aggregate is by allowing the rock to break on its natural cleavages under free impact conditions. This is in principle of crushing in a Vertical Shaft Impact Crusher.

High Performance

NAWA PACTOR is a marvel of solid dynamics with high velocity impact crushing. The closed rotor is a high technology piece of work to give a greater durability in a high abrasion causing environment of speeding material. The crushing chamber with a rock box is skillfully engineered to provide a high amount of attrition coupled with free impact, and to handle high volumes per kW of power.

System Support

The application engineers will analyse your crushing tasks and develop alternative configurations and assist in arriving at an economical solution. Using the indepth knowledge, the engineers will select appropriate equipment including the NAWAPACTOR VSI that would guarantee the highest quality end product. The crushers are manufactured to stringent quality standards. Each machine is vigorously tested on the shop floor before shipment to the user. The commissioning engineers will helps to a smooth integration of the machine into your plant.

Spare Parts and Service

The designers are constantly innovating the methods and metallurgy vis different rock characteristics to improve the life of wear components. Nawa is committed to assist all the users to optimise the operating cost per ton of production in their crushing task. The service engineers do professional change of parts that are subject to wear and tear and train the operators on the job. They do periodic inspection of the machine to ensure its high efficiency and output.

Quick and Vibration Free Installation

A great care has been taken in developing a factory made crusher support frame for quick installation. The dynamically balanced machine is completely shopassembled on an integral baseframe with a motor mount. The whole assembly is placed on a sturdily designed steel skid for a vibration free installation and less foundation costs. The machine will be delivered as a complete and stand alone unit reducing the burden on the user to look for any addons before installation. The standard supply includes: Feed Hopper Discharge Chute Main Machine with Integral baseframe Motor Mount Machine Pulley, motor pulley and Vbelts Skid Frame Electric Motor (optional) Control Panel (optional)

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