Zirconia Liner

The zirconia liner offers life time cost savings, significantly longer service, better performance and safer operation than those made of more commonly used alumina ceramic. Premium's zirconia liner is a
proprietary Zirconium-based matrix that has significantly improved mechanical characteristics.

Zirconia has three important property advantages compared to alumina.
- Zirconia exhibits better impact strength.
- Zirconia is harder than alumina.
- Zirconia can be honed to finer surface finishes than alumina.

Finished to 4 RMS,
Zirconia liners - provide a surface finish that's three to four time finer than alumina.
All three of these property advantages translate to lower ownership costs. The improved wear directly extends the service life of the sleeve, while the improved impact strength cuts down on the significant costs of replacing broken liners in the field. The surface finish improvements, meanwhile, have an indirect effect.

HP design with shoulder-on-hull design to prevent sleeve slippage
Reduced liner and piston wear
Rated for all drilling operations up to 7500 PSI
Bore hardness of 92-94 Rockwell
ID tolerances of +.010"/ -.000"
Surface finish of 4 - 8 RMS
Hardness i s HV 0.3 kg/mm - 1100/1200 ( 92 - 94 Rc)
High pressure design to prevent slippage
Liner sizes are available from 4½" to 7" for all popular mud pump