constraction of black jaw crusher

blake jaw crusher

blake jaw crusher

In the history of crushers, both chronologically, and by virtue of its standing in the field of heavy-duty crushing, the Blake jaw crusher stands first in the list. All of the large, heavy-duty primary crushers of the jaw type are built around the Blake principle which, for simplicity and brute strength, is unsurpassed by any mechanism thus far devised for rock and ore breaking.

A sectional view of a jaw crusher which incorporates the Blake double-toggle mechanism is shown below. The Blake crusher in common with all machines of the jaw family is built into a rectangular frame, at one end of which is located the crushing chamber; in fact, the end of the box-frame constitutes the stationary jaw. The movable or swing jaw is suspended from a cross-shaft (swing jaw shaft) at its upper end, this shaft in turn being supported at each end in bearings at the top of the two sides of the crusher frame.

The actuating mechanism consists of the eccentric-shaft (also supported in bearings in the sides of the frame), the pitman, and the pair of toggles, which span from swing jaw to pit-man, and from pitman to rear end of the frame. The motion of the eccentric-shaft is transmitted through the pitman to the inner ends of the toggle pair, and through their action to the lower end of the swing jaw, which pivots around the supporting shaft at its upper end. The motion is similar in one respect to that of the standard gyratory crusher, in that it is greatest at the discharge opening, and gradually decreases toward the upper part of the chamber.

The Blake Jaw crusher frames have been the subject of considerable variety in details of design and have been built of several different materials. Originally all frames were of cast iron, as was the case with all of the early gyratory machines. Then, as larger sizes were developed, cast steel became the common medium for all large and medium size crushers. When the Superior line was designed, semi-steel was selected for the frame, and steel rods extending through the side members from end to end were provided to absorb the tensile stresses. This type of construction is used in all sizes of this line, except in the 84 machines, where cast steel has been used exclusively up to the present time, these cast-steel frames being reinforced for heavy-duty applications in the same manner as the semi-steel frames of the smaller machines. Of recent years the trend has been very definitely toward the use of welded design, with side members of rolled steel plate, reinforced by stiffening ribs.

In past years both chilled cast iron andmanganese steel were used in jaw plates for the Blake crusher, depending upon the kind of rock to be crushed. The chilled ironplates did not possess the requisite strength to resist breakage, even when used on comparatively soft rock; in our case we have abandoned them in favor of manganese steel on all of our jaw crushers, regardless of size.

This crusher is representative, in its general proportions, of the prevailing practice in Blake crusher design for a number of years. In this respect it is probably just as well entitled to be classed as a standard type as the gyratory crusher which goes by that title. It is true that refinements have been made in almost every detail, as compared to early models, but the basic action and the general proportions of the crushing chamber are much the same.

The original Blake crusher was designed with a vertical stationary jaw. Probably the first departure from this arrangement was an 84 X 66 crusher, built in 1914. This machineconventional design, in that the swing jaw was made vertical. Later, when the Superior line was developed, a compromise between these two extremes was used in several of the sizes; that is, both jaws were sloped. Each of these three arrangements has certain features which are advantageous, and others which are unfavorable. Present indications are that the original arrangement, with vertical stationary jaw, will continue to hold a leading position.

Crushing angles in standard Blake-Type machines generally run in the neighborhood of 27 deg, at the minimum open-side discharge setting. Theratio-of-reduction at minimum recommended settings and with straight jaw plates average about 8:1, in the range of sizes from 15- x 10-in., to 60- x 48-in,, inclusive.

parker rj0850 jaw crusher for sale, used small jaw crusher, crusher

parker rj0850 jaw crusher for sale, used small jaw crusher, crusher

Parker RJ0850 Jaw Crusher for sale, 1996 year with hours showing on the clock, Jaw Crusher built on integral swivelling hydraulic jacks to raise the unit from ground level and enable a flat bed trailer to reverse under for transport. Unit can also be raised for working, it can be raised 45 / 115cm from the ground. Diesel Drive crusher, fitted with CAT engine. Fitted with Parker Crusher box, 800MM X 500MM (31.5x 20) Jaw opening, Steps Platform up to Jaw/Feeder area. The Jaws are in ok condition as you can see from images below. Built on frame with 4 landing legs 2 each side. Vibrating grizzly feeder with grizzly bars and fitted with over-band magnet installed over the discharge belt. Ideal size and weight for transport and this crusher will fit into small sites/yards. Parker RJ0850 Jaw Crusher is in good condition and ready for work, In working order and has just been fully checked over. Very Clean Jaw Crusher for sale. Cheap Mobile Jaw Crusher for sale. RockRanger RJ The compact design 23Ton crusher has a big attitude and it is pacifically designed to deal with the day to day crushing of recycled materials e.g. Bricks, Blocks, Slabs including hard rock applications and concrete. The Parker RJ0850 Jaw Crusher is ideal for working inside recycling centers. This Parker Jaw Crusher will handle all types of material that needs to be crushed, Ideal machine for small quarry operations or recycling/demolition business. Worldwide Shipping options available, for keenest rates to get this jaw crusher delivered to your local port or site please click here tocontact us. See the YouTube video of the RJ0850 Jaw Crusher in our yard here at Ballytrain Plant by clicking here. Check our full range of New Jaw Crushers, Screeners, Trommels, Stackers, Conveyors and Magnets onhttps://www.roco9.com/ The Parker RJ models are ideal for recycling, demolition and volume reduction projects in constrained inner city environments. The RJ0850 uses integral swivelling hydraulic jacks to raise the unit from ground level and enable a flat bed trailer to reverse under for transport. Fed by a vibrating grizzly and are capable of producing up to 140 tph depending on the feed material and closed side setting used. RockRanger RJ0850 The RockRanger RJ is a fully transportable primary crushing plant complete with a Parker Rocksizer single toggle Jaw crusher. The under frame is carried on bottom members designed to distribute ground loading, and is complete with a set of four hydraulic jack legs operated from the main plant hydraulic system to raise the crusher up for positioning on a suitable trailer unit. Built around a strong straight beam chassis with standard supports for feed section, jaw crusher, power unit and conveyor frame. The RockRanger RJ is a high-capacity, extremely mobile crushing unit suitable for urban recycling and demolition projects. Feed Hopper 3.5m capacity Vibrating Grizzly Feeder: 0.9m x 2.8m By-pass Chute RockSizer Jaw Crusher 800 x 500mm Optional Magnetic Separator 570gauss @ 200mm Product Conveyor discharge height 2.05mm Power Unit CAT 3116 90kW Control Station Weight (tonnes) Capacity (tph) Max Feed Size (mm) Crusher lift-up Clearance Travelling Dimensions (mm) 50 125 Length Width Height 23 50/65 105/140 455 1150 7400 2500 2700 Working Dimensions (mm) Length Width Height 8800 3200 3350

Parker RJ0850 Jaw Crusher for sale, 1996 year with hours showing on the clock, Jaw Crusher built on integral swivelling hydraulic jacks to raise the unit from ground level and enable a flat bed trailer to reverse under for transport. Unit can also be raised for working, it can be raised 45 / 115cm from the ground. Diesel Drive crusher, fitted with CAT engine. Fitted with Parker Crusher box, 800MM X 500MM (31.5x 20) Jaw opening, Steps Platform up to Jaw/Feeder area. The Jaws are in ok condition as you can see from images below. Built on frame with 4 landing legs 2 each side. Vibrating grizzly feeder with grizzly bars and fitted with over-band magnet installed over the discharge belt. Ideal size and weight for transport and this crusher will fit into small sites/yards. Parker RJ0850 Jaw Crusher is in good condition and ready for work, In working order and has just been fully checked over. Very Clean Jaw Crusher for sale. Cheap Mobile Jaw Crusher for sale. RockRanger RJ

The compact design 23Ton crusher has a big attitude and it is pacifically designed to deal with the day to day crushing of recycled materials e.g. Bricks, Blocks, Slabs including hard rock applications and concrete. The Parker RJ0850 Jaw Crusher is ideal for working inside recycling centers.

This Parker Jaw Crusher will handle all types of material that needs to be crushed, Ideal machine for small quarry operations or recycling/demolition business. Worldwide Shipping options available, for keenest rates to get this jaw crusher delivered to your local port or site please click here tocontact us.

The Parker RJ models are ideal for recycling, demolition and volume reduction projects in constrained inner city environments. The RJ0850 uses integral swivelling hydraulic jacks to raise the unit from ground level and enable a flat bed trailer to reverse under for transport. Fed by a vibrating grizzly and are capable of producing up to 140 tph depending on the feed material and closed side setting used.

RockRanger RJ0850 The RockRanger RJ is a fully transportable primary crushing plant complete with a Parker Rocksizer single toggle Jaw crusher. The under frame is carried on bottom members designed to distribute ground loading, and is complete with a set of four hydraulic jack legs operated from the main plant hydraulic system to raise the crusher up for positioning on a suitable trailer unit. Built around a strong straight beam chassis with standard supports for feed section, jaw crusher, power unit and conveyor frame. The RockRanger RJ is a high-capacity, extremely mobile crushing unit suitable for urban recycling and demolition projects.

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