Rotary Sample Divider 20L-90L Eight Bucket SUS304 Sealed Lab Splitter 380V

The rotary sample divider reduces a large laboratory sample into representative sub-samples that retain the same cross section as the original lot. The sample cross section retention rate stays above 99 percent, so every divided portion carries the same particle size distribution and grade as the bulk sample. The unit runs to internationally accepted sampling protocols.

How the division works: the sample enters as a controlled falling stream, and the rotating cutter ring below reconstructs and cuts the full cross section of that stream in a circular sweep. Because the cutter passes through the whole stream instead of scooping part of it, no bias is added to the sub-sample. Five bucket sizes from 20 L to 90 L cover small pilot batches up to high volume mine samples.

All capacities share the same drive concept, control panel, safety interlock and 380V 50Hz three phase supply. Only the bucket ring, hopper and frame size change with capacity, so operating procedure and wear parts stay common across the range.

• Eight collecting buckets in SUS304 stainless steel, each with a handle for tool-free removal from the turntable.
• Safety interlock in the housing stops the drive the moment the lid is opened, so the machine cannot run with the chamber open.
• Manual indexing turntable allows the ring to be turned by hand so any bucket can be brought to the front of the machine for collection.
• All sample contact parts in SUS304 stainless steel — hopper, chute, cutter ring and buckets — keeping samples clean and easy to decontaminate between lots.
• Gear motor with VFD speed control for precise setting of bucket speed, plus adjustable running time and division cycles on the control panel.
• Fully sealed chamber with a dust extraction port for connecting a vacuum hose, so dust stays inside the machine.

• 99 percent cross section retention keeps assay results representative of the original lot.
• No operator skill required — automatic control replaces manual quartering and improves both reduction accuracy and efficiency.
• Less human influence on results — the same program repeats identically across operators and shifts.
• Built-in safety protection — lid interlock prevents accidental operation during inspection or cleaning.
• Durable SUS304 stainless steel — corrosion resistant, hygienic and simple to clean.
• Easy sample recovery — handled buckets lift out individually, so a finished batch is emptied without dismantling the machine.
• Adjustable frequency, speed and time — the split is tuned to the material and to the target sub-sample weight.
• Reduced contamination — sealed design keeps dust in and outside material out.

• Geological and mining laboratories — ore grade reduction before assay and fire assay
• Cement, clinker and building material testing
• Metallurgical and chemical process control sampling
• Soil, sediment and environmental testing laboratories
• Heavy mineral sands, coal and industrial mineral sample preparation

Please confirm the required bucket capacity, the power supply available on site and the target sub-sample weight when ordering. Other capacities and special voltages can be quoted on request.