Product Introduction

Double roller crusher crushes materials by rolling and grinding force produced by relative rotation of two sets of independent transmitting rollers. It's applied to primary and secondary crushing of crisp lumpy materials in the cement, chemical, electricity, mining, metallurgy, construction, refractory materials and coal industries. with large feeding size and adjustable discharging granularity, it can crush materials with the compressive strength of no more than 160MPa. the machine is especially used in the coal industry to crush the raw coal. It can directly crush without removing the waste rock after deferrization and removing the dust. With even discharging sizes and low over-crushing ratio, it's also applied to clay, rubber and branches.

Working Principle

There is a wedge or gasket adjustment between two rollers with adjustment bolt on the top of it. When the adjustment bolt lifts the wedge, the wedge will jack up the moving roller from the fixed pulley, that is, the gap between rollers is enlarged as well as the discharging size. When the wedge moves downward, the gap and the discharging size become small under the action of pressure spring by the moving roller. The gasket adjusts the discharging size by way of decreasing the amount or reducing the thickness. The gap will be enlarged when increasing gasket, or vice versa.

the driving structure pulls the roller on the sheave through V-belt driven by two motors and makes is rotate at a relative direction. Materials enter into the feeding inlet through the roller for grinding and crushing and the finished products will be discharged from below the chassis.

Performance Characteristics

1. It has screening and crushing functions.

2. Two gear rollers are not of equal circle, meshing or running at an equal speed.the feature greatly improves the cutting and crushing results of ores and reduces the congestion of gear roller crusher currently.

3. Dual Overload Protection

on one hand, torque limiting hydraulic coupling has absorbed the impact force produced in the crushing which makes the machine operates stably; on the other hand, it protects the whole machine. Once there is a jam or overload inside it, the hydraulic coupling will automatically stop the transmission of power and makes it run with no load, thus, both motor and gear rollers are protected.

4. Reasonable Structure and Long Duration

the gear rollers are lined spirally which is not only beneficial to discharge qualified materials but also decreases the amount of stressed gear teeth which is favorable to crush lumpy materials. What's more, it accomplishes crushing under double action between the gear roller and the liner and the jaw body which reduces the workload of gear teeth, improves the efficiency and prolongs the useful time of the whole machine.

Model

Model	Content
2	Double Roller
P	Crusher
G	Rolling
	C Gear T Clay D Cutter Head (Branch)J Rubber; No note for smooth roller
	Roller Diameter, mm
	Roller Length, mm

Technical Parameters

Model	Roller Diameter mm	Roller Length mm	Maximum Feeding Size mm	Discharging Size mm	Capacity t/h	Power kw	Weight (Excluding the Motor) t
2PG-200 125	200	125	5~20	0.4~4	0.5~1.5	≦5.5	≦500
2PG-400 250	400	250	20~40	2~8	2~10	≦15	≦1430
2PG-600 400	600	400	20~70	3~30	4~30	≦37	≦3600
2PG-600 750	600	750	25~80	3~40	5~40	≦55	≦7300
2PG-750 500	750	500	25~95	3~40	6~80	≦45	≦7650
2PG-900 900	900	900	25~95	3~40	10~90	≦75	≦1840
2PG-1000 800	1000	800	25~95	3~40	15~100	≦90	≦25200
2PG-1200 800	1200	800	40~100	4~40	20~120	≦90	≦25900
2PG-1200 1000	1200	1000	40~100	4~40	30~140	≦110	≦51000
2PGC-370 1200	370	1200	20~60	3~25	3~5	≦18.5	≦1600
2PGC-400630	400	630	50~150	5~50	10~60	≦15	≦4000
2PGC-450500	450	500	80~200	5~80	20~60	≦15	≦3700
2PGC-5501000	550	1000	100~300	5~100	30~120	≦45	≦7100