Jaw Crusher Good Practice

Jaw crushers should be fed a consistent rate of feed that will result in the crushing chamber being kept full at all times. This will result in more stone-on-stone crushing, reducing the wear on the (jaw die) manganese wear plates, creating a more cubical product, and result in more even wear over the length of the jaw die.Generally all material is smaller than the discharge gap should be removed (scalped) prior to being fed into the jaw crusher. This will increase the tons per hour of total production by the plant, and reduce wear on the jaw dies. It will also reduce fines production and increase cubical product. A jaw crusher should not be sized to the maximum size rock that might be fed to the plant, but a size that will handle 95-98% of the material that might be fed to the jaw. Buying to the maximum size of rock that might be fed the jaw will result in buying a jaw crusher that will be under-utilized, difficult to keep choke-fed, cost more than necessary, and have a much higher operating cost. It will cost less to install grizzly bars over the feed hopper to remove the oversize MP4 Accessories rocks than to buy an over-sized jaw crusher. They can then be manually broken, sold as rip-rap or erosion control or landscaping boulders.Jaw crushers are typically used as primary crushers, or the first step in the process of reducing rock. They crush Bicycle Accessories primarily by using compression. The rock is dropped between two rigid pieces of metal, one of which then moves inwards towards the rock, and the rock is crushed because it has a lower breaking point than the opposing metal piece. There are two basic types of jaw crushers, the overhead eccentric style (shown above), and the double-toggle style. Which will work best for a given operation depends upon several factors.CEDARAPIDS 30X42 JAW CRUSHING PLANTDiesel powered Cedarapids 30"X42" jaw crusher mounted on 3-axle chassis. Includes Lippmann 42"X20' vibratory grizzly feeder, under crusher discharge conveyor, grizzly bypass chute, bolt-on feed hopper and supports. In good working condition. Jaw dies from 60% to 80%. Will provide new discharge and drive belts.NORDBERG C3055 JAW CRUSHING Sporting Goods PLANTComplete primary crusher plant, including 1999 Nordberg C3055, 51" X 16' Lippman-Milwaukee heavy duty horizontal vibratory pan feeder, 5X14 Kolberg-Pioneer heavy duty scalping screen, pedestal mounted hydraulic breaker, Nordberg primary under crusher discharge conveyor. Complete engineered support structures, catwalks and stairs, control tower with controls, containerized electrical switchgear, feed hopper and rock box. Professional erection available at your jobsite in most parts of the world. 1990 PIONEER 35X46 JAW CRUSHING PLANTIncludes 42" X 17' Pioneer vibrating pan feeder, 4' X 8' heavy duty Mesabi-style scalping screen, professionally engineered support structures, Tramac pedestal mounted hydraulic breaker, Westinghouse softstart for jaw motor, variable control for feeder, under jaw discharge conveyor, all electrical components to operate crusher (no control house). Professional erection available at your jobsite in most parts of the world.CEDARAPIDS 32X40 PORTABLE JAW CRUSHERIncludes Cedarapids 32X40 jaw crusher with 125 HP motor, 46"X16' vibratory grizzly feeder, 48" discharge conveyor, mounted on Cedarapids 3 axle chassis.Jaw dies approximately 90% on stationary, 75% on moving. Grizzly bars are in very good condition (new in 2008), and pan very good. Jaw has remote greasing manifold. Discharge conveyor has shock-absorbing rollers under crusher discharge point. Vibratory grizzly area has added steel re-inforcement framework to protect the chassis and VGF. Crusher has been used primarily to crush limestone, and has been well maintained. Good framework, well designed, and in very good working condition.PARKER JAW PLANT: 1000X600 (22X42)Plant has been modified to use American made jaw dies, hydraulic components and fittings in many areas. Powered by Cat 3306 diesel engine and hydraulic powered. Completely self-contained for portable crushing. Very well maintained. Installed jaw does approximately 45% to 80%. 36" discharge belt. Vibratory grizzly feeder. Mounted on three axle factory chassis. Running gear in good condition. Has been used for portable contract crushing.CEDARAPIDS 30X42 PORTABLE DIESEL-POWERED JAW CRUSHING PLANTCedarapids 30X42 jaw crusher, S/N. 37453, mounted on factory tandem-axle chassis. Includes vibratory grizzly feeder, removable hopper, 42 discharge conveyor, and powered by a Murphy turbo-charged diesel engine.