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
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 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
Application
| 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