Cone Crusher
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Hydroset Control
This consists of a robust hydraulic jack which supports and adjusts the mainshaft assembly. Setting adjustment can be carried out by one man in less than a minute. Hydroset control has been successfully used for several decades.


Automatic overload protection
Built in to the Hydroset system is an overload protection device which allows the mantle to sink to permit passage of scrap iron and other uncrushable materials.When the uncrushable material has passed through the crushing chamber the mantle is automatically raised to its original position.
Oil is forced out from the Hydroset cylinder to the accumulator so that the mantle sinks to allow uncrushable objects to pass through the crusher .The gas pressure in the accumulator forces the oil back to the Hydroset cylinder as soon as the object has left the crushing chamber.


Quick-emptying crushingchamber
If a sudden power failure stops the crusher under load, the mantle can be lowered so that the crushing chamber can be easily emptied. The concave ring can easily be rotated to even out wear.
Remote setting indication and adjustment
A remote setting indication system can be supplied as an optional extra for subord cone and superior crushers. A special Hydroset tank is used and is fitted with a setting transducer which is electrically connected to a remote setting indication unit so that the crusher setting can be displayed in the plant’ s control room. The setting can Then be remotely adjusted by a pushbutton - controlled pump and solenoid valve.

Automatic control systems
MAHYAR CRUSHER CO. Can supply an automatic setting regulation system as an optional extra for subord cone and superior crushers.The system automatically monitors the motor power, the Hydroset pressure and the setting, and automatically regulates the latter in accordance wiht the load on the crusher.This gives optimum crusher utilization and considerably improved crushing results. Also available for special applications is another system which controls both the feed and the setting.These systems are described in a separate leaflet.
Extreme fine crushing
After extensive trials, MAHYAR CRUSHER CO. have developed a system for extreme fine crusher with the 36” subord cone crusher. This new method involves a modified 2-36” or 4-36” crusher and an automatic satting regulation system and has proved to be ideal for the production of 0- 4 mm material, for example. Both capacity and product quality are improved. see separate leaflet. 


Product Curve
The product analysis depends on many factors, amongst which are the C.S.S., the crushing chamber design and the type of  material being crushed. Over the years we have accumulated a lot of data about product curves, and for most applications, the curves given at the bottom of the page give good approximations of the product which can be expected. In general, the product curve is directly related to the C.S.S., and the percentage of the product which will be smaller than the C.S.S is normally as shown in the table below.


Minimum C.S.S.
The normal minimum recommended C.S.S is determined by the crushing chamber and the eccentric throw. Guide values are given in the table below:


Feed arrangements
For all crushing chamber designs material smaller than the C.S.S. should  be screened out from the feed and  we recommend a vibrating feeder ahead of  the  crusher. To ensure high capacity high reduction and low wear it is essential that the crusher is evenly fed  and that the feed is evenly distributed all around the feed opening. Special attention should therefore be  paid  to the  design of  the feeding system.


Product size distribution diagrams for clean, friable granite
Find The C.S.S. on the vertical axis and follow the horizontal line across to the coloured vertical line. The curve
passing through the meeting point of these two lines gives the size distribution of the crushed product.