Jaw Crushers

Small Jaw Crushers

We offer two types of forced feed and yet small jaw crushers:

  1. The Type “H” has cast steel or alloy iron frame, steel bumper with over-size roller eccentric bearings, bronze side bearings and manganese steel jaw and cheek plates.
  2. The Type “J” is made in two styles, one with bronze bearings and the other with anti-friction bearings. Both styles have cast steel frames, steel bumpers, and manganese steel jaw and cheek plates.

Principle of Operation of our Small Jaw Crushers

Both types of Small Jaw Crushers are of the forced feed type. The main shaft is eccentric and on this eccentric shaft is mounted the movable jaw, imparting a rotary movement to the jaw. This rotary movement followed by the movable jaw actually pushes the feed down into the crusher, as well as crushing. From this action is derived the name “Forced Feed.” As a result of this action a higher ratio of reduction and larger capacity can be obtained than with the Blake type crusher.

small-jaw-crusher-for-sale View the Jaw Crusher for Sale that we have

Jaw Crusher for Small Applications

These crushers are ideal for mines where a large ratio of reduction is required. ….Read more

Gyratory VS Jaw Crushers: Advantages & Disadvantages

No discussion of primary crusher selection would be complete without a comparison of the two leading types: the standard gyratory crusher and the Blake jaw crusher. Although their fields of application overlap to a considerable degree (at least in the realm of primary crushing) there is no real conflict between these two machines; one supplements the other and, between them they very effectively cover an imposingly large proportion of the entire field of primary crushing applications. This does not mean that other types, such as the sledging rolls, for example, are not better suited for certain applications; but there are very few primary crushing jobs to which the gyratory or jaw crushers, or both of them cannot be applied with at least a fair degree of satisfaction.Advantages and Disadvantages of Gyratory and Jaw Crushers

Either of the two types can be built to handle the hardest and toughest rock or ore that can be economically mined or quarried. The jaw crusher, because of its box-frame construction, and simple toggle mechanism, is especially well adapted to extra heavy design for the crushing of extremely tough materials: in this respect it holds some advantage over ….Read more

Rock Crusher History

History tells us, it was in 1830, the first US patent was issued on a rock crushing machine. It covered a device which, in a crude way, incorporated the drop hammer principle later used in the famous stamp mill, whose history is so intimately linked with that of the golden age of mining. In 1840, another patent was issued, which comprised a wooden box containing a cylindrical drum apparently of wood also on which a number of iron knobs, or hammers, were fastened; the expectation was that this drum, when revolved at about 350 RPM, would shatter the rock fed into the top of the box. This device, although it was conceived as an impact crusher and thus would rate as a forerunner of the hammermill, bore a somewhat closer resemblance to the single sledging-roll crusher. There is no evidence that either of these early inventors carried their work through to fruition.Blake Jaw Rock Crusher Mechanism
Eli Whitney Blake invented the first successful mechanical rock breaker, the Blake jaw crusher patented in 1858. Blake adopted a mechanical principle familiar to all students of mechanics, the powerful toggle linkage. That his ….Read more

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