Introduction and model display of roller press bearings

Nov 13, 2023

The roller press in the water machine industry is an efficient, energy-saving, and environmentally friendly grinding equipment widely used in grinding operations in cement, electric power, metallurgy, chemical, and other industries. It adopts the principle of material bed crushing and uses two horizontally installed and synchronously rotating extrusion rollers to crush the material in a high-pressure bed. When the closed material layer is forced to move downward, the squeezing force gradually increases until it is destroyed and squeezed into a dense cake and discharged from the machine. The material cake has high grindability but low mechanical strength. The material particles smaller than 2mm in the material cake account for about 60-70%, and many micro-cracks exist.

The roller press mainly comprises a frame, a fixed extrusion roller, a movable extrusion roller, a transmission device, a hydraulic system, a cooling system, a lubrication system, and a feeding device. Among these, the squeeze roller is the core component of the roller press, mainly composed of the roller body and the surfacing wear-resistant layer. In addition, there are auxiliary components such as a transmission system, hydraulic system, lubrication system, and feeding device.

Types and characteristics of roller press bearings

Roller press bearings in the cement industry mainly include spherical roller bearings, cylindrical roller bearings, thrust spherical roller bearings, crossed roller bearings, etc. These bearings have different characteristics and usage occasions. The buyers and users must consider the selection comprehensively based on factors such as the roller press's model, specifications, and usage conditions.

Spherical roller bearings

Spherical roller bearings can adjust the center position automatically, bear radial and axial loads, and have high rotation speed and load-bearing capacity. Spherical roller bearings include 23060CAK/W33, 230/1150CAF3/C3W33, 23936CAMKE4C3S11 and other models. They have the characteristics of high precision, rigidity, and high reliability and can withstand large loads and impact forces, thereby ensuring the stable operation of the machine.

Cylindrical roller bearings

Cylindrical roller bearings have a simple structure, large load-bearing capacity, and can withstand large radial and axial loads. However, its speed is low and generally suitable for low-speed and heavy-load roller presses.

Thrust spherical roller bearings

Thrust spherical roller bearings can withstand axial and radial loads, have high rotation speed and load-bearing capacity, and are suitable for roller presses that bear axial and radial loads.

Crossed roller bearings

Crossed roller bearings include CRBH12025AUUC1 T1 P5 P4 P6 and other models. They perform well in the ability to withstand axial and radial loads, have high rigidity and high precision, and are suitable for high-load and high-speed applications.

The photo is of spherical roller bearing 24168CAK30/C3W33.

Materials and structure of roller press bearings

Materials

Roller press bearings are generally made of high-carbon chromium bearing steel GCr15 or carburized steel 20Cr2Ni4A, etc., with high hardness and wear resistance after quenching and tempering. In addition, for the bearings of roller presses under special working conditions, surface strengthening treatment technologies such as carburizing and quenching, nitriding, high-frequency quenching, etc., are also required to improve their wear resistance and fatigue resistance.

Structure

The structure of roller press bearings includes outer rings, inner rings, rolling elements, and cages. The outer and inner rings are the rolling bearings' main parts. The rolling elements move between the inner ring and the outer ring. The function of the cage is to keep the position of the rolling elements stable. Depending on the operating conditions, the structural form and size of the roller press bearings will also be different.

Selection and maintenance of roller press bearings

Select

When selecting roller press bearings, the following factors must be considered: model, specification, load size and direction, rotation speed, installation and use environment, etc. The bearings' service life and maintenance requirements also need to be considered. When selecting the rolling bearings, you need to pay attention to the following points:

1. Select appropriate rolling bearings according to the model and specifications of the roller press;

2. Select the right rolling element type according to the load size and direction;

3. Select the proper cage type according to the rotation speed;

4. Select appropriate materials and surface treatment technology for the installation and use environment.

Maintenance

Regular maintenance ensures roller press bearings' normal operation and service life. Specifically include the following points:

1. Regularly check the operating status of the roller bearings, such as temperature, sound, vibration, etc.;

2. Change the lubricating oil regularly to keep the bearings in good lubrication condition;

3. Periodically check the wear of the roll bearings. If severe wear occurs, replace it in time;

4. Regularly clean and rust-proof the bearings to keep the rolling bearings clean and in good condition.

In short, the roller press bearing in the cement industry is one of the core components of the roller press and has a vital impact on regular operation and life. When selecting and maintaining, you need to pay attention to the following points: choose the appropriate model and specification according to the operating conditions; pay attention to the material and surface treatment technology of the bearing; regular inspection and maintenance; pay attention to the installation and use environment of the rolling bearings.

FV Company provides roller press bearings 241/560CAK30/C3W33, 232/750CAKF3/C3W33, 24168CAK30/C3W33 and other models for customers in cement plants.

If you have any needs for this type of bearing, please get in touch with us.