Jaw Crusher Resources

Terminology

Open Side Setting

Maximum distance between jaw die for a given setting (this is the distance when the jaw is at rest)

Close Side Setting

Minimum distance between jaw die derived from the OSS and the stroke.

Nip Angle

Inclusive angle between jaw die indicative of the crusher’s ability to crush and draw rock.

Fixed Jaw

Replaceable die attached to the fixed frame.

Swing Jaw

Replaceable die plate attached to the pitman.

Cheek Plates

Bolt on wear plates designed to protect crusher frame.

Wedges

Some designs of jaw crushers require wedges to ensure that the jaw plates are held firmly in position. These are also a wear part that can be replaced when worn down.

Jaw Fitted with Fixed Heavy Duty Die and Super Tooth Swing Die

Jaw Die Selection

There are a few key points that you need to consider when selecting the correct liners for an application:

Feed Material Type
Feed Material Hardness / Abrasiveness
Feed Size
Required output
Potential of uncrushable material in the chamber
Required throughput

Jaw Die Profile	Recycling	Soft-Medium Rock	Hard Rock	River Gravel	Asphalt
Super Tooth		X	X	X	X
Quarry Tooth	X	X	X	X	X
Standard Tooth	X	X	X	X
Multi Tooth	X
Heavy Duty		X	X

Jaw Die Profiles

Super Tooth

Also called Medium Tooth. Medium to hard rock applications. Grips material to allow better crushing.

Quarry Tooth

Hard rock and high abrasive applications. Deeper tooth profile allows for extra wear.

Multi Tooth

Also called Recycle Tooth. Recycling applications. Good grip on smooth flat surfaces.

Standard Tooth

Recycling and soft rock applications. Not available for all models.

Heavy Duty

Designed for fixed side only. Reduces the number of fixed die changes. Can be used with Quarry or Super Tooth Swing die.