The maximum amplitude of swing of the jaw, or "throw", is determined by the type of material being crushed and is usually adjusted by changing the eccentric. It varies from 1 to 7 cm depending on the machine size, and is highest for tough, plastic material and lowest for hard, brittle ore.

The movable jaw has its maximum movement at the top of the of motion (throw) at the discharge point of the single-toggle jaw crusher is 

The Jaw Crusher was first introduced by Eli Whitney Blake in 1858 as a double-toggle Jaw Crusher. Introduced in 1906, McLanahan’s Universal Jaw Crusher was one of the first modern era overhead eccentric Jaw Crushers. On the overhead eccentric style Jaw Crusher, the moving swing jaw is suspended on the eccentric shaft with heavy-duty double

Jaw crushers must be belt-driven. An efficient substitute for the flat belt in all cases is the Texrope drive, which consists of a number of V-shaped endless rubber belts running on special grooved pulleys. The grip of these belts is so great that the distance between the pulley centres can be reduced to about 30% of that required for a flat belt.

Series jaw crushers have a large eccentric throw coupled with a steep toggle plate angle that magnifies the effective stroke at the crusher discharge.

Offset ratio · throw · eccentric lobe · crushing machine · redesign. Disclosure statement. No potential conflict of interest was 

A jaw crusher is a kind of size reduction machine which is widely used in mineral, aggregates and metallurgy fields. speed, throw, nip angle (angle between swinging jaw plate and . fixed jaw . Large wheels used as part of the crusher drive and to store inertia. Nip Angle Angle between jaw plates which is indicative of the crushers ability to

the addition of an eccentric throw factor, is appli- cable to standard types of single-toggle or overhead eccentric jaw crushers as far as maximum capacity.

Keywords: Design; Operations; Jaw crusher; Challenges; Crushing parameters eccentricity of the shaft leads to increase in throw; hence,.

The Crusher throw is defined as the distance in the direction of compression the moving crushing surfaces/plates travel from OSS to CSS. Throw = OSS – CSS.

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