Crusher Bearings: Knowing the basics leads to better care

In a typical jaw crusher, two outer bearings located on either side of the main frame support an eccentric shaft, while two inner bearings support a moveable jaw. These are commonly known as "pitman" bearings. The reciprocating motion of the shaft moves the pitman against a second, stationary jaw.

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A fixed jaw plate adjacent to a moving jaw plate, driven by an eccentric shaft and Pitman/crank arm and powered by vee belts from a standard electric motor. Dial indicator for easy and accurate jaw gap setting. A unique lock mechanism on the shaft to ensure jaw gap setting is maintained. An innovative jaw clamping mechanism.

Crusher - Wikipedia

The Blake crusher was patented by Eli Whitney Blake in 1858. The Blake type jaw crusher has a fixed feed area and a variable discharge area. Blake crushers are of two types- single toggle and double toggle jaw crushers. In the single toggle jaw crushers, the swing jaw is suspended on the eccentric shaft which leads to a much more compact design ...

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manufacture of jaw crushers dates back more than 100 years with the Traylor and Fuller-Traylor double toggle jaw crushers. These crushers have continuously withstood the harshest duties found in the world. With constant and continual improve-ments to the designs, the TDT has been solidified as a preferred crusher throughout the industry ...

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A critical point in the operation of large jaw crushers is the arrangement of swing jaw and its supporting shaft. While in most crushers the jaw is pressed on the shaft and the latter swings in frame, in the jaw crusher the opposite principle is used—shaft is clamped in frame and jaw swings on shaft! Another point has been lubrication.

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Comparing to conventional impact crusher, the machine been able to increase circumferential speed to twice (60m/s.) and crushes the small materials that is previously hard to crush because of its small size.

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3. Appropriately increase the number of the eccentric shaft revolutions Within a certain range, if increase the eccentric shaft rotation number of marble jaw crusher, it is possible to enhance the productivity. But revolutions are not the sooner the better, once the speed is too fast, it is easy to throw out materials in the crushing cavity.

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The ultimate primary crusher. The C Series jaw crushers are overhead eccentric single toggle jaw crushers. The feed material is crushed between fixed and movable jaw dies. Movable jaw die is mounted to the pitman. Pitman motion (=kinematics) is defined by the eccentricity of the eccentric shaft and by the angle of the toggle plate.

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The two most commonly used crushers are the primary impact crushers and the heavy-duty jaw crushers. Before making any final decision, consider the characteristics of these two crushing machines: Primary Impact Crusher – A primary impact crusher is generally used for crushing materials of grain size and for recycling concrete and quarried ...

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