BLJ In-Situ Solutions was engaged by a Brisbane-based screening and crushing equipment company to complete precision journal turning on a mobile crusher shaft. The company manufactures and supplies screening, crushing, and associated plant equipment that is used across the quarry, construction, recycling, mining, and sand and gravel industries.

The mobile crusher shaft had developed wear on both sides due to damaged pulleys. This wear affected the correct fitment of the pulleys and created the potential for misalignment, vibration, and accelerated mechanical deterioration. Each shaft journal measured 175mm in diameter by 250mm in length.

Although the surface damage required only minimal clean-up, corrective machining was necessary to restore dimensional accuracy and prevent further wear. The objective was to return both journals to specification while preserving shaft integrity and ensuring the pulleys could be matched to the final machined size.

BLJ mobilised with specialised journal turning equipment to machine both sides of the mobile crusher shaft. The journals were set up and machined to remove the worn surface and restore concentricity and dimensional accuracy.

Minimal clean-up was required, which allowed BLJ to preserve maximum shaft integrity while achieving a consistent final diameter. Following machining, the pulleys were machined to suit the final shaft sizing, ensuring proper fitment and eliminating the previous wear interface that caused the issue.

By performing controlled journal turning, BLJ ensured the shaft alignment and load-bearing surfaces were returned to operational specification without requiring shaft replacement.

Both shaft journals were successfully restored, allowing the mobile crusher to return to service with correct pulley alignment and improved mechanical stability.

This approach eliminated the need for costly shaft replacement and reduced downtime for the Brisbane-based client. Precision journal turning ensured that the repaired surfaces met the required tolerances, supporting long-term reliability of the crusher assembly.

The project demonstrates BLJ’s capability to deliver targeted onsite machining solutions for worn rotating equipment across Queensland’s construction, mining, and heavy industrial sectors.