How Does a Double Roller Crusher Compare to a Hammer or Impact Crusher for fine Crushing?

Hammer and impact crushers produce a wider size distribution with a higher fines fraction due to the high-velocity impact mechanism. Double roller crushers produce a narrower gradation with significantly less fines – typically 30–50% less fines content on the same feed material at the same target top size. For applications where fines are a waste or […]

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What is the Difference Between the 5X thin oil Station and the VSI Water-cooled Station?

The 5X uses an air-cooled thin oil lubrication station – no water supply required on site, lower installation complexity, and no risk of water contamination in the oil circuit. The standard VSI uses a water-cooled station that provides higher cooling capacity for hot climates or very high duty cycles but requires a clean water supply and […]

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Can Rotor Speed be Adjusted While the Machine is Running?

Yes – tip speed is adjusted via the drive motor VFD from the control panel without stopping the machine. Increase speed to produce finer output with higher fines content; reduce speed to shift the product coarser. Adjust in small increments and allow 10–15 minutes for the product gradation to stabilise before sampling. Speed range per model […]

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What Causes Rotor tip Liner Wear and When Should They be Replaced?

Tip liners wear when the autogenous rock lining breaks down and feed material contacts metal – typically during startup before the lining builds, during feed interruptions, or when feed is very fine (little lining material available). On limestone, tip liners typically run 300–500 hours; on harder abrasive feed (granite, river pebble), 200–400 hours. Liners are reversible – […]

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How Does the 5X Series Differ from the Standard VSI and VSI6X Series?

The standard VSI is the original platform – well-proven, cost-effective, with water-cooled lubrication. The 5X improves on it with a deeper-cavity rotor for higher throughput and better feed port geometry that reduces blockage at high feed rates. The VSI6X is the top-specification series with the largest rotors, air-cooled lubrication, and the highest capacity ceiling. For new […]

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How Long do Rotor tip Liners Last in Rock-on-rock Mode?

In rock-on-rock mode on limestone or soft-medium rock, rotor tip liners typically run 300–600 hours before rotation or replacement. On harder, more abrasive feed (granite, river pebble), expect 200–400 hours. Tip liners are reversible – each has two usable faces. OEM tip liner sets are stocked for all VSI models; keep one spare set on site […]

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How Often Should the Vibration Sensor Threshold be Calibrated?

Calibration is recommended at commissioning and after any rotor maintenance that involves removing or replacing tip liners or the rotor assembly. The sensor’s 0.1–20 mm/s range covers both normal operating vibration and early-stage bearing defect signatures; alert thresholds should be set based on baseline readings taken during the first 50 hours of operation. Consult the […]

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What Triggers the Automatic Shutdown on the Lubrication Station?

Shutdown triggers on two conditions: loss of oil flow (pump failure, blocked filter, or line leak) and loss of oil pressure at the bearing supply points. The dual-pump arrangement provides redundancy – a single pump failure switches supply to the backup pump and alerts the operator, rather than triggering immediate shutdown. Shutdown only occurs if both […]

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What is the Difference Between the VSI Series and the VSI6X Series?

The VSI series is the standard platform with dual feed mode (centre-and-side, or centre-only) and dual-motor drive. The VSI6X is the next-generation series with a larger rotor, deeper feed ports for higher single-pass throughput, and a more advanced hydraulic lubrication station with air-cooling as standard (versus water-cooling on the VSI series). For new installations, the […]

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