Specifications for Alumina Ceramic Jars
QMX provides you with high quality premium polished high alumina ceramic jars. These jars are used whenever small quantity of samples need to be grinded. They are extensively applied to in the fields of Paint, Ink, Geology, Metallurgy, Electronics, Construction Material, Ceramics, Chemical Engineering, Light Industry, Medicine, Environmental Protection and so on.
Item No. : JA0106
Material : Premium high purity alumina ceramic -Al2O3
Jar Volume : 1,500 ml
Each jar set includes grinding jar, jar lid, rubber sealing gasket.
Milling media sold separately
Max Loading Capacity : 2/3 capacity of the grinding jar
Density : 3.8 g/cm3
Color : ivory white
Shape : cylindrical
Hardness : >80 HRA
Abrasion Resistance : very good
Suitable for : medium-hard, fibrous samples
Attachment : lid and rubber sealing gasket
Grind Balls : alumina ceramic balls (should be ordered separately)
Grind Ball Sizes : 3/5/10/15/20mm available
Choice of Grinding Jars & Grinding Balls
In order to prevent excessive abrasion, the hardness of the grinding jars used and of the grinding balls must be higher than that of the material used. Normally, grinding jars and grinding balls of the same material should be chosen.
Grinding Jar Ball Configurations
Grinding Jar Volume
Compatible Ball Weight
5mm grinding balls (0.25 g/pc)
10mm grinding balls (1.99 g/pc)
15mm grinding balls (6.72 g/pc)
20mm grinding balls (15.92 g/pc)
These values are recommendations for general use, the number of balls should be determined experimentally if necessary.
PORCELAIN JARS FOR RAPID MILL The jars for rapid mill are made of porcelain alumina, fired at high temperature and are free from porosity. The external surface is glazed. Capacity: 300 cc – 1000 cc – 1800 cc Material feed size < 80 mm Suitable for both dry and wet grinding Maximum quantity of AI2 O3 : 66% Mohs hardness scale: >8 Complete with standard charge of alumina balls, nylon or ceramic lid with seal