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What is a ball mill liner? The ball mill liner also called ball mill lining is installed in the ball mill cylinder, used to protect the cylinder wall from the impact and friction of materials and grinding media. It is an important ball mill spare part. Ball mill liners can be processed into different shapes by using different raw materials to adjust the movement of the grinding media. It helps to improve the grinding efficiency, increase the output, and reduce the metal consumption of the ball mill.

Customizable: material, shape, weight
Application: cement ball mill, air-swept coal mill, beneficiation ball mill, etc.
Price: factory outlet, affordable


To better protect the inner shell of the ball mill during the grinding process, liners are installed in different parts inside the ball mill and have specific callings, such as end cover liner, cylinder liner, trunnion liner, intermediate diaphragm, and discharge end grate plate. In addition, ball mill liners are available in a variety of shapes and materials to meet a wide range of applications.

ball mill lining structure

1. End Cover Liner

2. Cylinder Liner

3. Trunnion Liner

4. Intermediate Diaphragm

5. Discharge End Grate Plate

According To Raw Material

Based on raw material, ball mill liners can be divided into high-manganese steel liners, high-chromium iron liners, alloy steel liners, and rubber liners.

High-manganese steel liner: it has a certain impact toughness. When impacted, the surface will produce cold hardening, tough and wear-resistant, with a hardness of HB300-350, an impact value of 700Nm/cm2, and a total life of about 5000-6000 hours. The high-manganese steel liner is commonly used in medium and small ball mills.

High-chromium iron liner: its wear resistance is more than 2 times higher than that of high-manganese steel liner, and it also has good resistance to high temperature and corrosion, which is a ball mill liner with a long life but a high price. High-chromium iron liners are mostly used in large ball mills and as coarse grinding bin liners in small and medium-sized ball mills.

Alloy steel liner: it has good physical properties, and excellent wear and impact resistance. The service life is more than twice that of high-manganese steel liners. The alloy steel liner can withstand even more significant impact forces. It can maintain the surface shape of the liner plate for a long time in operation to increase the ball mill output by more than 6%. 

Rubber liner: the wear resistance is about 1.5-4 times higher than that of high-manganese steel liners, therefore, the service life is longer, which improves the operation rate of the ball mill and reduces the maintenance rate. In addition, the rubber liner mass is light, only 20kg, which reduces the overall energy consumption of the ball mill by 5%-10%. But it is not suitable for dry grinding and is mostly used in the wet ball mill and fine grinding chamber.

ball mill lining different material
High-manganese Steel Liner & Alloy Steel Liner & Rubber Liner
According To Shape

Based on shape, ball mill liners can be divided into smooth liners, step liners, wave liners, hemispheric liners, etc.

Primary-stage grinding: coarse grinding

Coarse grinding should use undulating liners, such as step liners and wave liners. This type of liner will lift the grinding media to a higher height, thus improving the impact capacity of the media and increasing the output of the ball mill.

Second-stage grinding: fine grinding

The smooth type liner makes grinding media easy to slide and roll, which enhances the grinding effect, therefore the fine grinding stage mostly uses smooth-shaped liners, such as smooth liners.

Smooth liner: the liner surface is flat or cast with patterns. It has a strong abrasive effect on the material, usually used with wave liners in a fine grinding chamber.

Step liner: the liner surface has stepped protrusions at a certain angle of inclination, which increases the thrust on the grinding media. It is suitable for coarse grinding.

Wave liner: it has a small crest and pitch and a small lifting coefficient. There are conical holes on the surface. It is mostly used in coal mills and rod mills for fine grinding.

Hemispheric liner: it is frequently applied in a coarse grinding chamber.

lining plate with various shape


AGICO is an experienced ball mill machine and ball mill spare part manufacturer. We are professional in customizing ball mill liners in various shapes and materials, as long as you provide us with PDF or CAD drawings with detailed dimensions and data.
No matter which manufacturer your equipment is purchased from, we will do our best to customize supreme-quality and cost-effective linings on the condition that you have a demand!
Highlights Of AGICO Ball Mill Liner
Light-weight design: AGICO ball mill liners all feature lightweight, which means they do not require much torque to work effectively. They exert less stress on the bearings during use, in addition, they are safer to install.
Excellent sealing performance: good sealing performance of AGICO ball mill liner reduces the jamming phenomenon of abrasives. It increases the recovery rate of grinding material.
Reduced noise: AGICO ball mill liner greatly reduces the generation of noise, creating conditions for a safe and healthy working environment.
SizeHole Dia. (mm)Ball Mill Liner Length (mm)
ball mill inner liner
ball mill grate plate
agico wave ball mill liner
agico ball mill lining plate


Rich Experience
AGICO has 30 years of professional manufacturing experience. We own several automatic ball mill spare parts production lines.
High Quality
AGICO has obtained ISO9001:2015 international quality system certification and SGS enterprise qualification certification.
agico office
Attentive Service
We offer technical consulting services, design services, manufacturing services, transportation services, and after-sales services.
Competitive Price
Our products are factory outlet, enjoy ex-factory prices. Choose us is the choice of good value for money.
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