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Roller bearings are a common type of bearing that relies on rolling elements (e.g., cylindrical rollers, tapered rollers, needles, etc.) moving between the inner and outer rings to carry loads and reduce friction. The same as ball bearings, roller bearings are capable of withstanding radial or axial forces, or both, to suit the needs of a particular application. Characteristics of roller bearings include low torque required for startup, high rotational accuracy, easy selection, simple maintenance, reliable operation, and high load-carrying capacity at moderate speeds.
With high load-carrying capacity, better rigidity and smooth running, roller bearings are widely used in a variety of mechanical equipment, such as automobiles, machine tools, motors and so on.
The following are common applications for roller bearings:
Automobile industry: used in the wheel hub, transmission, engine and other parts of the automobile.
Mechanical manufacturing: in the drive system of all kinds of mechanical equipment, such as machine tools, fans, compressors and so on.
Aerospace: in the aircraft, spacecraft power system, landing gear and other parts.
Railway transportation: train wheels and bogies and other parts.
Agricultural machinery: tractors, harvesters and other agricultural equipment.
Heavy machinery, such as cranes, excavators, etc.
Electric motors and electrical equipment: all kinds of motor support and rotating parts.
The contact form is different: the ball bearing is point contact, while the roller bearing is line contact.
Load-carrying capacity: in general, the load-carrying capacity of roller bearings is bigger than that of ball bearings.
Impact resistance: ball bearings have better impact resistance, while roller bearings have relatively weaker impact resistance when bearing heavy loads.
Friction coefficient: ball bearings have a small friction coefficient, and roller bearings have a relatively large friction coefficient.
Ball bearings and roller bearings each have their characteristics; they can not simply say which one is better, but according to the specific use of the scene and demand to choose.
Therefore, in the actual application, according to the working conditions of the equipment, load and other factors to consider, choose the most suitable type of bearing.
Roller bearings are used in a wide range of application scenarios, mainly including machine tools, automobile manufacturing, power equipment, metallurgical equipment, heavy machinery, mining equipment, shipping, aerospace, robotics, medical equipment, food machinery, and chemical and pharmaceutical industries.
The importance of bearings in mechanical equipment is reflected in the reduction of friction, reduced energy loss, extended service life and other aspects. As an important part of mechanical equipment, bearing selection, design and maintenance of mechanical equipment has an important impact on the operating status and performance.
The contact form is different: the ball bearing is point contact, while the roller bearing is line contact.
Load-carrying capacity: in general, the load-carrying capacity of roller bearings is bigger than that of ball bearings.
Impact resistance: ball bearings have better impact resistance, while roller bearings have relatively weaker impact resistance when bearing heavy loads.
Friction coefficient: ball bearings have a small friction coefficient, and roller bearings have a relatively large friction coefficient.
Ball bearings and roller bearings each have their characteristics; they can not simply say which one is better, but according to the specific use of the scene and demand to choose.
Therefore, in the actual application, according to the working conditions of the equipment, load and other factors to consider, choose the most suitable type of bearing.
Roller bearings are used in a wide range of application scenarios, mainly including machine tools, automobile manufacturing, power equipment, metallurgical equipment, heavy machinery, mining equipment, shipping, aerospace, robotics, medical equipment, food machinery, and chemical and pharmaceutical industries.
The importance of bearings in mechanical equipment is reflected in the reduction of friction, reduced energy loss, extended service life and other aspects. As an important part of mechanical equipment, bearing selection, design and maintenance of mechanical equipment has an important impact on the operating status and performance.
QJ218-N2-MA belongs to a four-point contact ball bearing. It has an inner diameter of 90mm, an outer diameter of 160mm, a thickness of 30mm, a single-row bearing with locating grooves, a solid brass cage and an outer ring guide.
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