Mobile Primary Jaw Crusher

1. Technical Data and General Information

1.1 Hopper

Width                                          2500 mm (8’2“)
Length                                 4500 mm (14’7“)
Hopper capacity                        7 m3 (9.2yds3)
Hopper type hydraulically folding side and rear extension plates

1.2 Feeder

Type spring mounted vibrating feeder
Width                                          1040 mm (3’5“)
Length                                 4170 mm (13‘8“)
Grizzly 1.6m                              40-50 mm aperture tapered

1.3 Single Toggle Jaw Crusher Type

Feed opening                            1100 mm (44“) x700 mm (28“)
Crusher speed                          270 rpm
CSS Adjustment                       Hydraulic wedge system
Drive                                     V-belts from hydraulic motor
CSS Range                              40-175 mm (1 ½ - 7“) *Note Applications

1.4 Main Conveyor

Belt                                       EP500/3 ply 8+2 mm grade X (1000 mm)
Length                                 11300 mm
Degree of incline                            15 - 23 degrees
Height of discharge                         3300 mm
Drive drum                                 320mm
Tail drum                             273 mm

1.5 Tracks

Length                             3850 mm
Width                                          500 mm (20“)
Drive                                     Hydraulic motors
Control                                 Remote handset
Standard cable control remote handset
Optional radio remote handset type Hetronic

1.6 Engine Deutz V6 (1015C)

Engine power                           273 Kw (365 Hp)
Diesel tank                                500 ltrs
Hydraulic tank                          500 ltrs

1.7 Optional CAT C9

Engine power                        262 Kw (350 Hp)
Diesel tank                             500 ltrs
Hydraulic tank                          500 ltrs

1.8 Optional Magnetic Separator Type Eriez CP 20/100-SC2

Weight                                   1200 kg
Length                             2400 mm
Width                                       1002 mm
Height                                       428 mm
Type self cleaning suspended
Belt width                                  800 mm (32“)
Gauss at 200 mm distance from belt   578 gauss
Gauss at 250 mm distance from belt   458 gauss

1.9 Optional Side Conveyor

EP400/3 ply 3+1.5 mm
Length                                 3600 mm
Belt width                                  650 mm (26“)
General Technical Data:
Operation Mode                    Transport Mode
Length:                app.      14,375 mm               app.      14,375 mm
Width:                          app.        4,045 mm                     app.        2,800 mm
Height:                 app.        4,140 mm                     app.       3,400 mm
Total weight:                     app. 42 500 kg  without options
Normal ground pressure       app. 129 kPa without options   
Gradient                   max. 28^o

1.10 Paint Work General Standard:

All parts are undercoated and top coated
2 pack paint 110 microns thickness

1.11 Dust Suppression

Situated at crusher inlet, crusher outlet, main and side conveyor discharge.

2. Specification of Components and Functions

The feed material is directly loaded by an excavator into the feed hopper, which has a nominal volume of 7 m3 (9.2yds3). The feeder is equipped with a grizzly section located at the discharge end for removal of fines. This feature allows the passage of fine material direct to the discharge conveyors, so that it does not pass through the Jaw Crusher feed opening. This design makes possible a high production capacity by avoiding the accumulation of fine material (sometimes mud or clay) at the bottom end of the crushing chamber. The layer of fine material separated by the grizzly feeder is fed on to the main conveyor belt before the drop point from the Jaw Crusher and reduces the impact from the larger stones on the belt, beneath the crusher. The fine material and the crushed product are transported on the main conveyor.

As an option, a separate natural fines belt conveyor can take out the natural fines.

2.1. Feeder

The feeder is a vibrating grizzly unit (4.2m x 1.04m) including 1600 mm long grizzly section.
This feeder has been specially designed for operation with coarse material and high impact load. The feeder has cassette type grizzly bars and is fitted with HardoxTm 400 liner plates. This feeder has two unbalanced shafts located under the vibrating structure. They rotate in opposite directions, resulting in straight-line motion due to the self-synchronizing effect. The vibrators are oil lubricated and have adjustable counterweights.

2.2. Feed Hopper

The Feed hopper has a nominal volume of 7m3 and the hopper has hydraulic foldable sidewalls, for ease of transportation. The hydraulic system enables the operator to control the feed rate, by changing the speed of the vibration motor. This feature is especially useful in order to obtain maximum output from the whole installation; also an ultrasonic level system will automatically start & stop of feeder depending on the level of material above the crusher.

2.3 By-Pass Chute

Crusher by-pass chute discharges directly on to the main product conveyor, alternatively a chute flap section can be turned by hand for discharging to the natural fines conveyor.

2.4 Crawler Tracks

The Crawler tracks have a length of 3850 mm and track shoe width is 500 mm. The normal ground pressure is 129 KPa together with a travelling speed of 1.2 km/h. Hydraulic motor.

2.5 Single Toggle Jaw Crusher

The SBM single toggle pe Jaw Crusher with a feed opening of 1100mm x 700 mm (44” x 28”), and consists of:

2.5.1. Frame

Rigid one piece welded construction consisting of steel plates and cast carbon steel parts, heat-treated after welding (for internal stress relief), and then precision machined. The simultaneous use of both plate and castings makes it possible to position the weldments in regions of lower mechanical stress. This feature considerably increases the fatigue resistance of the welded frame assembly.

2.5.2. Swing and Stationary Jaw Plates

These are cast of austenitic manganese steel, with various profiles, specific for each material to be crushed. The dimensions are the same for the stationary and the moving jaw plates. This makes it possible to freely change the position of the jaw plates. The jaw plates are fixed to the crusher's swing jaw and frame by means of wedges and tie bars.

2.5.3 Swing Jaw

This is a heavily ribbed one piece steel casting. Its eccentric movement (throw) causes the jaw plates to crush the material as it is forced down trough the crushing chamber.

2.5.4. Shaft

The eccentric shaft for the J11 crushers is a low-alloy steel forging. The eccentric part of the shaft provides the throw of the swing jaw. Precision machined and of ample diameter, it ensures that the bearings have a long useful service life. For extra heavy duty service the roller bearings are of the self-aligning type, protected by labyrinth seals and are grease lubricated.

2.5.5. Cheek Plates (Side Liners)

These plates are made of austenitic manganese steel, and protect the frame against abrasive wear in the region of the crushing chamber. They are bolted to the crusher side plates. Note that the left and right hand cheek plates are identical, and thus reduce the number of different spare part items that have to be stocked.

2.5.6. Toggle Plate and seat

This is a nodular iron casting. Its ends rest in the "lubrication-free rolling-contact" toggle seats, thus maintaining the lower part of the swing jaw in the correct position. It takes up most of the compression force generated in the crushing chamber by the swinging movement of the swing jaw. The wear parts of the toggle seat, which support the toggle plate, are made of medium carbon steel, and machined in order to ensure the correct dry rolling contact.

2.5.7. Setting Adjustment.

Fully hydraulic adjustment, wedge type.
40mm-125mm (1 ½” – 5”)           CSS
75mm – 175mm (3” – 7”)            CSS
The 2 different CCS setting ranges are obtained by changing toggle plates.

2.5.8. Flywheels

Made of cast steel, their geometry provides a high moment of inertia, thus reducing the dynamic load variations transmitted to the motor. They are fixed to the shaft in a manner that facilitates disassembly, even after a long time in service. Each flywheel is also fitted, with a counter-weight that balances the crusher in the best way possible, reducing horizontal forces to a minimum.

2.5.9. Crusher Load Sensing

1. Ultrasonic level system, above crusher, controls the feed from the feeder into the crusher to obtain constant material flow and maximum output.
2. Speed sensor on drive flywheel, observes crusher speed, max 270 rpm and min 235 rpm, to control crusher feed and avoid overloading of crusher unit.

Relative Solutions

• Primary Gyratory Crusher
• Stationary crushers and screens
• Typical uses of used crushers
• Calcspar & Calsite Crusher
• Feldspar Crusher
• Single Roll Crusher
• Magnetite Crusher
• Molybdenum ore crushing