Introduction The NBJ-II Rock collapse resistance tester is mainly used as a testing instrument to determine the durability disintegration index of rocks. It can test the durability performance of rocks that can resist disintegration after wet dry alternation due to climate factors. The device rotates 2 drum shaped sample boxes at a speed of 20 revolutions per minute through a motor fixed on the device base plate. The drum shaped sample box is installed on bearings coated with lubricating oil, and there is no resistance when rotating. The drum shaped sample box is made of corrosion-resistant materials and equipped with two water tanks. Widely applicable to major universities, research institutes, experimental centers, etc. for measuring clay rocks and weathered rocks. Technical Parameters

 Host power: 50W 

 Speed: 20 revolutions per minute 

 Stainless steel sieve cylinder: 140 * 100mm, 

 Standard sieve aperture: 2mm 

 Sink capacity 200 * 170 * 120mm 

 Sample specifications: 10 pieces, each weighing 40-60g, polished into a round shape using a grinding disc or sandpaper 

 Test piece shape: roughly spherical in shape, without edges or corners 

 Dimensions: 900 * 300 * 500mm 

 Power supply voltage: 220V