Product introduction

Due to the prohibition of natural sand mining, as well as the need for a large amount of sand and gravel for housing construction and highway construction, and the controllable particle size and full specifications of machine made sand, the machine made sand market has good sales and large profit margins.

Hard rock sand making machine has achieved a breakthrough in the equipment manufacture of aggregate production. Hard rock sand making machine, also named as double roller crusher or roller sand making machine, runs by driving two motors and two pairs of rollers to grind the material fed. Double roller crusher can operate crushing material less than 80mm as well as the finished product size 50 mesh-20mm.

Reasons for choosing us

1. Compared with hammer sand making machine, double roller sand making machine does not need to replace wearing parts.

2.The finished product features pretty shape, well gradation, low over-crushing rate and high output.

3. Hard rock sand making machine is superior to hammer crusher and impact crusher, and the average service life ofitsroller sleeve is more than 2 years.

4．Roller skin contains high content of chromium, manganese and other rare metal materials. Adjustable discharge size.

Machine-testing Video

It is suitable for crushing sticky stone material into medium size. Roller crusher utilizes two rollers rotating in opposite direction to crush the material, which consists of motor, bracket, fixed rollers, movable rollers and springs. Most of its roller surfaces are glossy, and the bearings of the movable rollers can be moved along the machine frame and held against it by springs. Therefore, When a particularly hard object accidentally drops into the machine, the bearing can be moved out of the way to expel it. Furthermore, before the machine runs, the gap between the two rolls should be adjusted with shims to ensure the crushing size.

Hard rock sand making machine working Principle

The hard rock sand making machine operates through rollers. The pebbles, put into the machine through the inlet, are crushed by the squeezing between the rollers. The discharge size can be controlled by adjusting the gap between the two rollers. If the gap becomes larger, the discharged size becomes larger. While the gap becomes smaller by compressing spring, the discharge size also becomes smaller.

Product category

Hard rock sand making machine is divided into several kinds: Spring fine crushing sand making machine, cardan shaft drive fine crushing sand making machine, hydraulic fine crushing sand making machine.

You can choose the machine according to your budget and the facts.

Case scene

Product parameter