Metso Barmac® B7150SE™ VSI Crusher Case Study: Resolving Rotor Imbalance & Vibration in Hubei

Rotor Wear Part Optimization, Vibration Elimination, 100% Efficiency Restoration

The Challenge: Severe Vibration & Poor Efficiency Crippling Metso Barmac B7150SE

Our long-term client, Mr. Fan, operating a Metso Barmac® B7150SE™ VSI crusher at a production facility in Hubei, China, faced a critical operational crisis. The crusher was experiencing abnormally high vibration levels and significantly reduced crushing efficiency, severely disrupting production and risking equipment damage.

Even with OEM replacement parts, the client struggled with unstable performance. Our on-site engineering team conducted a full system inspection and identified the root cause: abnormal wear of the rotor wear plates led to asymmetric material lining formation inside the rotor, creating severe rotor imbalance.

This imbalance caused destructive vibrations, excessive noise, and drastically reduced throughput. Mr. Fan required an immediate, permanent solution to restore production stability, efficiency, and equipment safety.

Our Solution: Precision Diagnostics & Custom Rotor Liner Optimization for Metso Barmac B7150SE

Our expert engineering team delivered a tailored, factory-aligned solution specifically for the Metso Barmac® B7150SE™ VSI crusher and the client’s unique material characteristics:

On-Site Precision Diagnostics: We performed a comprehensive inspection to confirm abnormal rotor wear plate degradation and asymmetric material buildup as the core causes of imbalance.
Collaboration with Metso Factory Engineers: Our team liaised directly with Metso’s original equipment engineering team to align on technical specifications, rotor balancing standards, and best practices for VSI crusher performance.
Custom Rotor Wear Part Adjustment: Based on the client’s on-site material properties and Metso’s engineering recommendations, we implemented a targeted optimization of the rotor wear parts configuration. This redesigned the material flow path inside the rotor, eliminating asymmetric feeding, rebalancing the assembly, and preventing future uneven wear.
Post-Service Performance Verification: Our engineers remained on-site to test the crusher, confirming complete vibration elimination, restored throughput, and long-term operational stability.

Project Results: Vibration Eliminated, Efficiency Fully Restored

The customized solution delivered transformative results for Mr. Fan’s Metso Barmac B7150SE operation:

– “Permanent Vibration Resolution”: The rotor imbalance issue was fully resolved, eliminating dangerous vibration and ensuring safe, compliant equipment operation.

– “Full Crushing Efficiency Restoration”: The crusher returned to its rated optimal throughput levels, maximizing production output and eliminating costly downtime.

– “Enhanced Long-Term Reliability”: The optimized rotor liner setup prevented future asymmetric material buildup, reducing unexpected breakdowns and maintenance frequency.

– “Cost & Risk Reduction”: The solution avoided expensive equipment damage, extended the service life of critical components, and lowered overall operational costs.

Mr. Fan praised our technical expertise, factory-aligned solutions, and prompt on-site service, solidifying a trusted long-term partnership for all his Metso crusher parts and service needs.

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