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Improve Crusher Performance and Reduce Unplanned Downtime

 Internal components like bronze bushes, bearings, and eccentric assemblies play a critical role in crusher reliability and wear life. When these aren’t performing as they should, the impact is felt across your entire operation. 

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Improve Reliability. Extend Wear Life. Optimise Performance.

We work with quarrying and mining operations to identify performance issues linked to internal crusher components and provide practical, engineered solutions.

Whether you're experiencing inconsistent output, excessive wear, or unplanned downtime, a closer look at your components can often reveal the root cause.

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Where Performance Issues Often Start

 Variations in product size or throughput are often linked to internal wear components operating outside of tolerance. 

Industry - effective planned maintenance

Unplanned Downtime

 Failures in critical components like bushes and bearings can lead to unexpected shutdowns and costly disruptions. 

A More Effective Approach to Crusher Performance

Improving performance isn’t just about replacing parts — it’s about understanding how components function within the system.

At Rocktec, we focus on:

  • Correct material selection
  • Precision fit and alignment
  • Component performance within the full crushing circuit

This ensures improvements are not just short-term fixes, but long-term gains.

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Frequently asked questions

How do bronze bush tolerances affect crusher performance?

If tolerances are too tight:

  • Increased friction and heat generation
  • Risk of seizure under load

If too loose:

  • Loss of alignment
  • Uneven load distribution
  • Accelerated wear on mating components

Maintaining correct tolerances ensures proper hydrodynamic lubrication and consistent mechanical performance.

What role does material composition play in bush and bearing wear life?

Material composition determines resistance to load, heat, and abrasion.

Key factors include:

  • Alloy composition (e.g. tin bronze vs leaded bronze)
  • Hardness vs embeddability balance
  • Compatibility with shaft material

Incorrect material selection can lead to:

  • Premature scoring or galling
  • Reduced fatigue resistance
  • Poor debris absorption

Optimal material selection ensures longer service intervals and stable performance under varying loads.

How do eccentric assemblies influence crusher efficiency and throughput?

The eccentric assembly controls the motion profile of the crusher, directly affecting:

  • Stroke length
  • Crushing force
  • Throughput capacity

Wear or misalignment in the eccentric system can result in:

  • Inconsistent crushing action
  • Reduced reduction ratios
  • Increased vibration and dynamic loading

Properly maintained and specified eccentric components ensure consistent crushing geometry and optimal throughput.