Advantages and disadvantages of cross cylindrical roller bearings

What is cross cylindrical roller slewing ring

Cross cylindrical roller slewing ring is a kind of slewing bearing device, composed of two seat rings, using a cylindrical roller structure arranged in a cross arrangement, the rollers are separated and positioned by isolation blocks, which can bear axial force, radial force and overturning moment at the same time, has a high bearing capacity and slewing accuracy, and is often used in hoisting machinery, construction machinery, port machinery and some equipment and machinery that require high-precision and high-load slewing movement, so as to realize the stable connection and flexible rotation between the relative slewing moving parts.

Features of cross cylindrical roller slewing rings

High load-bearing capacity: The cylindrical roller structure with cross arrangement is adopted, and the rollers are in linear contact with the raceway, which can withstand greater axial force, radial force and overturning moment than the point-contact structure, which can meet the needs of heavy equipment and high-load conditions.

High precision: the precise arrangement of the rollers and the positioning of the isolation block make the slewing ring maintain a high rotation accuracy during operation, effectively reduce the shaking and deviation during operation, and can meet some equipment with high requirements for motion accuracy, such as precision machine tools, radar antenna bases, etc.

Compact structure: The structural design of this slewing ring is more compact, occupies less space, and has more advantages in the space layout of the equipment, which is conducive to the miniaturization and lightweight design of the equipment, especially suitable for occasions with limited space but high bearing capacity.

Easy installation: its structural form makes the installation process relatively simple, generally only need to connect the two seat rings with the fixed parts and rotating parts of the equipment respectively through bolts, which can effectively shorten the assembly time of the equipment and improve the production efficiency.

High rigidity: Due to the reasonable arrangement of the rollers and the design of the seat ring, the whole has high rigidity, and the deformation is small when bearing the load, which can ensure the stability of the equipment during operation and prolong the service life of the equipment.

Good interchangeability: The standardized design and manufacture make the cross cylindrical roller slewing ring have good interchangeability, when a component is damaged, it is easy to replace the corresponding part, reducing the maintenance cost and downtime of the equipment.

Wear resistance: The selection of high-quality materials and advanced heat treatment technology makes the roller and raceway surface have high hardness and wear resistance, which can maintain good performance in long-term operation and reduce the impact of wear.

Strong adaptability: It can adapt to different working environments and working conditions, whether it is in high temperature, low temperature, humid or dusty and other harsh environments, as long as appropriate protective measures are taken, it can work reliably and has strong environmental adaptability.

Advantages and disadvantages of cross cylindrical roller bearings

In addition to the advantages and disadvantages just mentioned, there are some other characteristics of cross cylindrical roller bearings, which are re-sorted out for you below:

merit

High load capacity: The unique arrangement of cross cylindrical rollers makes it able to bear a variety of loads such as radial, axial and overturning moment at the same time, and the load capacity is significantly higher than that of ordinary bearings, which is suitable for all kinds of heavy machinery and high load conditions.

High precision: The high matching accuracy between the roller and the raceway can ensure that the bearing has good rotation accuracy and can meet the strict requirements of precision equipment for motion accuracy, such as semiconductor manufacturing equipment, precision measuring instruments, etc.

Good rigidity: the structural design makes it have high rigidity, which can effectively reduce deformation and maintain the stable operation of the equipment when bearing the load, which is very important to ensure the machining accuracy and equipment performance, and is often used in the spindle of machine tools, industrial robot joints and other parts.

Compact design: under the same bearing capacity, its structure is more compact and occupies less space, which is conducive to the miniaturization design of the equipment, and has obvious advantages in space-constrained equipment, such as some equipment in aerospace, medical equipment and other fields.

Good impact resistance: It can withstand the impact load well, and can still maintain stable performance in some working environments with intermittent impact or vibration, prolonging the overall service life of the equipment, and is widely used in equipment that often faces impact loads such as mining machinery and construction machinery.

shortcoming

Strict installation requirements: the installation accuracy is extremely high, and the parameters such as concentricity, verticality and clearance need to be strictly controlled during the installation process, otherwise it will seriously affect the performance and life of the bearing, increase the installation difficulty and installation cost, and require professional installers and accurate installation tools.

Lubrication and maintenance are complex: high-quality lubricants and strict lubrication management are required, lubrication methods and cycles have specific requirements, and due to the complex internal structure, maintenance and maintenance work is difficult, and professional and technical personnel are required to carry out, which increases the maintenance cost and downtime of the equipment.

High manufacturing cost: The special structure and high-precision manufacturing requirements make its manufacturing cost high, resulting in high product prices, increasing the initial investment cost of equipment, and limiting its application in some cost-sensitive fields.

Sensitive to the working environment: Although it can withstand certain harsh working conditions, it is still more sensitive to the temperature, humidity, dust and other factors of the working environment compared with some specially designed bearings, and may require additional protective measures in extreme environments, otherwise the service life of the bearing will be shortened.

Cross cylindrical roller slewing ring supplier

As a well-known supplier of slewing bearings with 30 years’ experience, LTZC bearings is committed to providing slewing bearings with high quality and low price. The specific price needs to be comprehensively evaluated according to the size, load, material and accuracy requirements of the bearings. Please contact us if necessary.