The Basics of a Crusher Machine

Crusher machines break up raw material using a combination of impact and compression. Primary and secondary crushers reduce coarse materials, while tertiary and quaternary crushers reduce oversized particles to fine gradations.
The swing and stationary jaws are annealed cast steel box section construction -- designed for maximum rigidity to prevent distortion during operation. Graphite-impregnated bushings allow for proper lubrication and minimize wear, thus minimizing costly shutdowns!

Cone Crushers
Cone crushers offer many benefits to businesses looking to maximize the output of their crushing operation. They operate on a simple design and can create many different product yields depending on how the chamber and liner are configured. However, the crushing circuit must be designed to provide the crusher cone with choke-fed material or enough to keep it full so that it doesn't side load, which stresses components and leads to premature wear.
Inside the cone crusher, a piece of steel called the mantle rotates and crushes the materials against a stationary piece of metal known as the concave. The gap between the two is what determines your final particle size.

Horizontal Shaft Impact Crushers
HSI crushers use a high-speed impacting force to break rock along its natural cleavage lines to obtain cubically shaped product. They work well in applications that require high throughput with a low capital investment.
When fed to the HSI crusher, material enters the crushing chamber through a chute or feed hopper. The rotor’s blow bars (also known as hammers) then strike the material to fracture it and send it against the apron lined with breaker plates for further reduction. The rotor’s speed, gap setting and the metallurgy of the rotor’s breaker bar materials all affect the size of the final product.

Double Roll Crushers
With their simple construction and low machine height double roll crushers are easy to install, operate and maintain. They are among the most versatile primary comminution machines in operation today.
They work by forcing a particle between two heavily toothed, or corrugated, rolls that revolve toward each other in a gap known as the nip angle. The combination of compression and shear forces reduces the material to a desired size, resulting in a cubicle product with minimal fines.
The rolls may be smooth-surfaced for fine crushing or have stub teeth arranged in a chequered surface pattern to present a rough surface for coarser crushing. A heavy fabricated steel base with strong relief springs supports the rolls. A hopper surmounts the frame to direct the material into the nip zone and to prevent stones thrown from the sledging action from flying out of the machine. The hopper is usually covered with a heavy netting to contain these spalls.

Triple Roll Crushers
In this crushing machine, shear and compression forces are applied to material as it is smashed between two massive drums that rotate towards one another. The drums, or rolls, are constructed of heavy, wear-resistant steel castings and have either smooth or corrugated crushing surfaces.
In the past, crushing rolls were used to reduce soft rock and non-abrasive coal. They cannot compete with the hammermill on soft, non-abrasive stone, but they can handle harder, abrasive materials, and are far more economical than blast furnace or rotary kiln ash crushers.
Mechanically, crushing rolls are simple machines. They are built around a heavy, rigid cast-iron frame that supports two rolling assemblies each having a shaft with a roll centre and a shell of wear resisting metal such as high carbon steel or manganese. Each assembly is driven by a separate flat or V-belt sheave. The speed of each drive is adjusted by increasing the slip of the motor driving the roll with the highest no-load peripheral speed.