Gyratory Crusher

KEY FEATURES

Smooth or Grooved Mantles

for crushing a variety of soft or hard materials 

The Spider Assembly

used for crushing large, hard rocks in the upper region

Latest Safety Features

compliant with CE regulations

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GYRATORY CRUSHER

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PRODUCT DESCRIPTION

Gyratory Crusher
Primary Gyratory Crusher

High Performance GY Series

A gyratory crusher is one of the main types of primary crushers in a mine or ore processing plant. Gyratory crushers are designated in size either by the gape and mantle diameter or by the size of the receiving opening. Gyratory crushers can be used for primary or secondary crushing.

Major components can be divided to ease transport restrictions; i.e., spider 3 pieces, top frame 2 pieces each for upper and lower, bottom frame 3 pieces.

Operation
Operation

The crushing action is caused by the closing of the gap between the mantle line (movable) mounted on the central vertical spindle and the concave liners (fixed) mounted on the main frame of the crusher. The gap is opened and closed by an eccentric on the bottom of the spindle that causes the central vertical spindle to gyrate. The vertical spindle is free to rotate around its own axis. The crusher illustrated is a short-shaft suspended spindle type, meaning that the main shaft is suspended at the top and that the eccentric is mounted above the gear. The short-shaft design has superseded the long-shaft design in which the eccentric is mounted below the gear.

Main Shaft
Main Shaft 

Equipped with a balance cylinder that is designed to prevent damage to the step bearing should shaft jump occur.

To maximize the fatigue life of the main shaft, a sleeve is used to eliminate the use of a screw thread in the area where the mantle is attached. This area is also where the maximum bending moment occurs in the main shafts of primary gyratory crushers during operation.

ETCL has perfected a technique whereby the vertical position of the main shaft can be determined. This facility enables the user to have a digital readout of the setting of the machine at the operator’s console, either in field or remotely.

As part of the local gap setting panel, a set of graphs is provided from which the remaining liner life can easily be determined.

Due to the use of a hydraulic main shaft support mechanism, the GY primary gyratory crusher can be started under full load should it be required; e.g., in the case of an unplanned power failure.

Mantles
Mantles

Depending on the type of material to be processed, the primary gyratory crushers are offered with either smooth or grooved mantles. Grooves are usually used for the processing of harder materials. Furthermore, high chrome liners or liners with high chrome inserts can be used on the lower row of concave liners. This results in excellent nipping of material and increases wear life (increases of 3 to 5 times in liner life can be achieved).

Dust Sealing
Dust Sealing

Dust sealing of the area between the main shaft assembly and the eccentric assembly is achieved by means of a combination of a mechanical seal and overpressure supplied by means of a vortex blower. Pre-filtration of the air going to the vortex blower can be done according to specific customer requirements.

The Spider Assembly
The Spider Assembly 

The spider arms are an integral part of the spider assembly. The spider assembly, which is a one-piece casting, is specifically designed to ensure adequate rigidity when crushing large, hard rocks in the upper region of the crushing chamber.

TECHNICAL DATA

Main Components

GYRATORY CRUSHER | Specifications

Crusher Size Feed Opening x Mantle Dia
(in.)
Allowable Max
Feed Size
(in.)
Speed of
Pinion Shaft
(rpm)
Gyration
Per Minute
(gpm)
Eccentric
Throw
(in.)
Motor
Power
(Hp)
Mass
(ton)
42 – 65 43″ x 65″ 28″ x 37″ x 55″ 497 150 1″
1.25"
1.5"
300
350
400
129
54 – 74 54″ x 74″ 35″ x 47″ x 71″ 497 135 1″
1.25"
1.5"
1.6875"
300
400
450
500
255
60 – 89 60″ x 89″ 39″ x 53″ x 79″ 497 125 1″
1.25"
1.375"
1.5"
1.75"
300
400
450
500
600
440
60 – 109 60″ x 109″ 39″ x 53″ x 79″ 497 110 1″
1.25"
1.5"
1.75"
2"
500
600
750
900
1000
645

GYRATORY CRUSHER | Throughput Capacity

Crusher Size Eccentric
Throw
(in.)
Reference Throughput (STPH)
Discharge Setting (open side setting - OSS) (in.)
4.5″ 5″ 5.5″ 6″ 6.5″ 7″ 7.5″ 8″ 8.5″ 9″ 9.5″ 10″ 10.5″ 11″ 11.5″
42 - 65 1"
1.25"
1.5"
915
1069
1234
1031
1223
1400
1157
1355
1576
1278
1510
1741
1499
1763
2039
1697
2006
2314
54 - 74 1"
1.25"
1.5"
1.6875"
1499
2039
2314
2513
1620
2226
2513
2733
1763
2392
2771
2942
1862
2546
2887
3152
2006
2733
3174
3361
2116
2887
3273
3559
   
60 - 89 1"
1.25"
1.375"
1.5"
1.75"
2017
2325
2656
2887
3504
2160
2480
2821
3075
3736
2303
2656
3009
3273
3978
2502
2887
3273
3560
4331
2634
3042
3460
3747
4562
2777
3196
3626
3945
4794
2920
3361
3813
4155
5047
60 - 109 1"
1.25"
1.5"
1.75"
2"
2468
2975
3637
4320
5025
2612
3196
4133
4628
5400
2744
3361
4166
4860
5642
2964
3615
4485
5212
6017
3196
3868
4827
5598
6469
3405
4155
5168
5984
6910
3626
4408
5488
6392
7361
3846
4695
5830
6777
7802
4077
4948
6171
7163
8254
4320
5246
6546
7593
8750