Four Station Variable Speed Jar Mill 0.75KW Roller Jar Mill for Laboratory Powder Grinding

The 40L Four Station Roller Jar Mill is a variable-speed, 0.75KW powder milling machine engineered for ultra-fine grinding and mixing in laboratory settings and small batch production. Also known as a multi-position rolling ball mill, it combines an elegant, modern design with a compact structure, straightforward operation, high efficiency, and uniform granularity — making it an ideal tool for scientific research, education, experiments, and production.

The equipment is widely used across industries including electronic materials, magnetic materials, biological medicine, ceramic glaze, metal powder, nonmetallic minerals, and new material development. Its optimal rotational speed design drives the mill jar via rubber rollers, causing the grinding balls inside the jar to create an inclined flow movement that effectively disperses materials and delivers optimal grinding results in the form of micro-powder.

A timing control panel with pause and cumulative timing functions lets users set working time according to their specific needs, saving both time and labor while simplifying operation.

During operation, the grinding media and materials inside the cylinder are rotated to a specific height. Under gravity, they then fall down along the tube wall. This process crushes the materials through the impact of the grinding media, as well as through the friction and shear forces generated by the rolling and sliding of the media. The result is efficient size reduction with straightforward, low-effort operation.

The Rolling Jar Mill is mainly applied in the following industries:

• Electronic materials
• Magnetic materials
• Biological medicine
• Ceramic glaze
• Metal powder
• Nonmetallic minerals
• New materials

• More kinds of sample material can be ground each time.
• Operates either intermittently or continuously.
• Timing can be set according to user requirements.
• Suitable for ultrafine grinding with high pulverizing efficiency.
• Rubber roller made of special materials for durable, long-term use.

Available jar materials include: Agate, Zirconia, Alumina ceramic (Corundum), Tungsten Carbide, Stainless steel, PU (Polyurethane), PU with stainless steel liner, PTFE (Polytetrafluoroethylene), and Nylon. Vacuum jars are also available.

Available ball materials include: Agate, Zirconia, Alumina, Tungsten Carbide, Stainless steel, PU, PTFE, Nylon, and Carbon steel.

Available sizes: 1mm, 3mm, 5mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm, and 30mm.

Delivery can be completed within 7–10 working days after receipt of full payment. (Total value: USD 3088.0)