4PG Tetra-Walzenbrecher

The rotation of the machine is realized by 2 motors driving the upper drive roller and bottom drive roller with the help of coupling and reducer. The feeing material drop through the rollers, after squeezed, then the finished material discharged naturally, when there are some over-hard or non-breaking material appear, the roller gap can be enlarged with the contractive action of spring automatically, so the over-big or non-breaking material pass to the discharging exit and the machine is well protected. There is relative gap between the rollers running face to face, we can control the max. discharge grain size by change the gap. We can break the material of 100mm to less than 3mm. In order to prolong the service life, the roller should be high quality wearable alloy cast steel structure and its surface performs quenching and high temperature tempering treated. If the roller surface is frayed, it also can perform cutting activities by the turning device equipped with the machine to keep the surface smooth. For bearing seal, adopts 2-layer seal ring structure, which need not fill lubrication oil for long time. The main parts are frame part, drive roller part, driven roller part, drive part, safe adjustment part, protection hood and turning part etc. It has been widely used in cement, metallurgy, chemical industry, power plant and coal etc. industries to break the crisp and tough material. The main characteristics of 4PG series tetra-roll crusher: simple breaking flow, low operation cost, long service life, steady quality, adjustable discharge grain size and easy to maintain. 4PGφ900X700 tetra-roll crusher was the Shandong province innovation plan project carried out by our company in 2003, and it has passed the provincial new product appraisal by the end of 2003. 4PG1200×1000 tetra-roll crusher was the Shandong province innovation plan project carried out by our company in 2004, and it has passed the provincial new product appraisal by the end of 2004. The series of 4PGC Tetra-Gear Roll Crusher is characterized by novel design, reasonable construction, large crushing capacity, high efficiency in technology and good economic benefit. It is a new type of crushing equipment, possessing the features of high efficiency, advanced technology and energy saving. This crusher is of a 2-step operation performed within the same frame of the machine with a crushing ratio 6-8 and a crushing efficiency of 99% or over. This series of crushers have been widely used in coal, metallurgy, chemical industries and non-metallic mines to crush the materials of medium hardness such as lump coal, coke, shale, chalk, graphite, kaolin and asbestos. On account of the size of products crushed by our series of crushers are especially even, the phenomena of extra size or exceedingly smashed are quite rare, therefore it is suitable for the raw coal to be crushed before the coal dressing and classification. Crushing materialsMedium hard material,ore,rock,limestone,slag,slaked lime,etc.Capacity(t/h)Upper roll clearance is 40mm,bottom roll clearance is 10mm≈18Upper roll clearance is 10mm,bottom roll clearance is 2mm≈16Feeding grain size(mm)Upper roll clearance is 40mm≈100Upper roll clearance is 10mm≈40MotorTypeDrive upper rollYD250M-12/6Drive bottom rollY225M-6PowerDuring breakingUpper roll24Bottom roll30During cutting15Rotational speed (r.p.m)Breaking990Cutting490Roller's rotaional speed when breakingUpper drive roll & upper driven roll96Upper drive roll & bottom driven roll173Roller's rotaional speed when cuttingUpper drive roll & upper driven roll51Bottom drive roll & bottom driven roll51Reducer for upper drive gearZQ50-10 IIDrive ratio i=10Reducer for bottom drive gearZD30-10 IDrive ratio i=5.6Weight2800Dimensions(mm)(L×W×H) 3150×1980×3147