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Double Toggle Jaw Crushers are preferred for crushing unusually hard, abrasive rocks and other materials like ferroalloys and glass. They differ substantially from other types of crushers. There is no rotary motion in the crushing cycle and all crushing is done by compression of the feed material between two massive jaw plates. The moving jaw compresses the material against the stationary jaw. Jaw plates can be either smooth or corrugated.
Working Principle and Advantages
Double Toggle Jaw crushers have one jaw fixed, while the other jaw pivots about the top hinge. This moving jaw is shaped to move firmly and squarely against the material. There is no rubbing or grinding, purely compression, which produces a generally cubical product with minimum fines. The moving Jaw is very well balanced, so 95% of the drive motor power is used for crushing, while only 5% of the power is needed to move the jaw itself. As a result of this high mechanical efficiency, Double Toggle Jaw crushers require smaller size motors, keeping power costs down. Behind the stationary jaw are shims, used to adjust the distance between the lower ends of the jaws (closed side setting). This setting determines the output product size. There is also an arrangement of safety arm for protection from uncrushables or accidental overloads.
Crushing applications of Double Toggle Jaw crusher
· Granite
· Lime stone
· Ferro alloys
· Black trap rocks
· Coal/Coke
· Carborundum
· River Gravel
· Iron Ore
· Emery
· Blast Furnace slag
· Manganese Ore
· Bauxite
· Cupriferous Slag
· Quartzite
· Calcium Carbide
Double Toggle Jaw crusher capacity and power chart
[Capacities are based on bulk density of 1.6 T/m3]
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Jaw crusher
Size
MM x MM
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Maximum
Feed size
MM
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Capacities in TPH at closed side setting of
MM
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RPM
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Drive HP
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13
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20
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25
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32
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28
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51
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63
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76
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89
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100
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127
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300 X 175
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138
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6
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7
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8
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10
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13
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18
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25
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