When should you change a Jaw Liner?
- Change or rotate a jaw liner when there is less than 20% life left anywhere along the working face of the jaw liner.
- Swing and Fixed jaw liners do not normally wear at the same rate. The wear rate differs from application to application. Typically the ratio is 2 Fixed Jaw liners for every 3 Swing Jaw liners.
Why should you change a Jaw Liner?
- Excessively worn jaw liners place additional stresses in the crusher frames and bearings.
- Jaw Liners that are worn too thin can crack and damage the crusher body resulting in expensive repairs and prolonged downtime.
- Worn Jaw liners affect production and draw more power.
Figure 1 above: Shows the Liner profile, H is the tooth height of a new liner and 20% of H is an indication of when to rotate the Jaw liner.