Description
Instant setting adjustment with Hydroset system for wear compensation and product size alteration
The MAHYAR CRUSHER 36″ superior gyratory crusher is an intermediate crusher especially suit- able for the reduction of coarse material from a primary crusher for example our small jaw crusher or similar-which operates with a discharge set- ting of up to approx. 70mm c.s.s Three versions are available, with feed openings of 325 mm (13″),275 mm(11″) and 225(9).
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.
Setting decrease: Oil is pumped from the oil tank to the hydroset cylinder and raises the mantle until the desired setting is obtained. Setting increase: Oil is allowed to flow back to the oil tank and the mantle is lowered until the desired setting is obtained.
Quick-emptying crushing chamber
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. 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 than 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. The system automatically monitors the motor load the Hydroset pressure and the setting, and automatically regulates the latter in accordance with the load, on the crusher. This gives optimum crusher utilization and considerably improved crushing results. Also avail- able for special applications is another system which controls both the feed and the setting. These systems are described in a separate leaflet.
Large feed opening ,325mm (13), 275 mm (11) or 225 mm(9). Feed opening pro- vided with wearing liners.
Crusher equipped with water /oil or air/ oil heat exchanger. Air/oil type available in two versions -standard and tropical (for max. 32° C and 40° C ambient air temp .respectively).
Positive, protective, 3-system lubrication
Three independent lubricating systems assure positive, protective lubrication… more reasons why operating costs are low and crushing efficiency is high.
1- Spider bearing has separate lubrication.
2- Pinionshaft unit has separate oil-bath lubrication.
3- Automatic external lubrication system with split-flow maintains a positive circulation of oil around step bearing, bushings and gears. Independently controlled, this constant-pressure system maintains lubrication at all times, even during shutdown if desired. Oil passing through external system is filtered and cooled automatically.
Selection of crushing chamber
The selection of the most suitable crushing chamber depends mainly on the feed size and the desired product fraction. Max. feed size recommendations are given in the table on the next page. In doubtful cases. contact Mahyar Crusher for advice.
Two top shells and three crushing chambers are avail- able on 36 Supenor Crushers to meet different requirements. One top shell can be fitted with concaves giving 9 (225mm) and 11 (275mm) feed openings. whilst the other topshell can be fitted with concaves giving 11 (275mm and 13 (325mm) feed openings.
The size designation of a Superior Crusher is made up of the feed opening width and the mantle diameter at the bottom of the crushing chamber, both expressed in inches. A13-36″ Superior thus has a 13 wide feed opening and a 36 die mantle.
Feed arrangements
Material smaller than the C.S.S. Should, if possible, 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.
(*C.S.S.-O.S.S ecc. throw).
Minimum O.S.S
The normal minimum recommended O.S.S is deter mined by the crushing chamber and the eccentric throw. Guide values are given in the table on the next page.
Product Curve
The product analysis depends on many factors, amongst which are the O.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 ap- proximations of the product which can be expected. In general the product curve is directly related to the O.Š.S., and the percentage of the product which will be smaller than the O.S.S is normally 85%.
Product size distribution diagrams for clean, friable granite
Find the O.S.S. on the horizontal axis and follow the vertical line up to the red line. The curve passing through the meeting point of these two lines gives the size distribution of the crushed product.
Normally approx. 85% of the crushed product will be smaller than the O.S.S-marked on the diagram with a horizontal red line. This value can vary with different types of material, and with different feed sizes.
NOTE:
Reference line only. Not floor level.
1) Min. for removal of Hydroset assembly
2)Min. for removal of pinionshaft.
3)Min. for removal of mainsahft.
Dimensions are intended only as a guide for preliminary planning of the installation and should not be used for the construction of foundations etc. Dimensions are given in mm.
Topshell arms can be turned through 30°, 60°or 3)Min. for removal of 90° to give the most suitable feed arrangement.
mainshaft.
To attain good distribution of material in the crushing chamber it is advisable to feed over one of the topshell arms.
Approx. weights in kg
Spider cap 140
Topshell (heaviest lift) ……….…..5.000
Mainshaft, complete ……….…..2500
Eccentric……….….. 270
Bottomshell, complate ……….…..2.900
Pinionshaft housing ……….…..180
Hydroset cylinder……….….. 590
Total weight of crusher (approx.) ……….….. 11.580
Lubrication system with oil tank……….…..360
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