What is the main component of the slewing bearing ? the precautions before installation

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The slewing bearing is also called the turntable bearing, and some people call it to rotate, rounded support, which is a new type of mechanical components. As the joints in mechanical equipment, it has an important role in machine equipment. With the rapid development of the machinery industry, the application range of the rotary support is also more wide. Although the application of the rotary support is very broad, many people don’t understand it, and the Hengguan Xiaobian introduces you the main components of the rotary support and its pre-installation considerations.
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First, the main components of the slewing bearing
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1, ferrule

The slewing bearing has an inner ring and a coat, there is a circle between its internal and outer casings, and the roller is a weak link, usually the roller will be quenched, reach the corresponding depth and hardness. Falling against wear and preventing the roller from peeling.

2, rolling body

Typically, the rotary supported rolling body is made by integral hardened carbon chromium bearing steel. The existence of the rolling element makes the relative rotation and load transfer property between the inner and outer rods, which can well reduce the rotational resistance. Usually the ball on the rolling body, the roller is made of hard chrome alloy.

3, hold frame

There are three different structural forms, which are separated by isolation blocks, integral, and segmented. The cage can be separated by the rolling bodies, which can reduce friction and prevent slippery, and the role of snorting during the rotary support rotation.

Made of steel or casting aluminum alloy in the overall type and segmented cage. The isolation block is made of polyamide resin, cast aluminum alloy or the like. With the continuous development of the industry, nylon has gradually been used in the production of segmented retention.

4, seal ring

The rotary support has a seal to prevent lubricants from being lost while protecting the rotary support is not contaminated by dust and particles. The seal is made of an elastomeric material, and a lubricant with most general mineral oil and a lithium-group or calcium-based thickener.
Slewing ring

1, need to confirm the appearance before installation

Before installing the slewing support, you need to make a careful appearance check, confirm that the rotary support does not receive a relatively large damage during transport; if the customer requires quenching or other requirements, it is also confirmed that there is no soft belt mark and gear beating. Larger position tag.

2, need to clean the impurities before installation

The rotary support acts in the device to connect support, so before installation, it is necessary to confirm that the impurities on the rotary support have been cleaned, avoiding wear and failure due to the existence of impurities.

The above is a related introduction to the main components of the rotary support and the precautions before installation, I hope to help you understand the rotary support. The rotary support is small, compact, lightweight, can at the same time to withstand the torque from different directions, and the range of use is more wide. Luoyang Hengzhang Bearing Technology Co., Ltd. focuses on producing high-quality swivel support, if you have related needs, please call order.

How to disassemble the large slewing bearing? Four ways to deal with it

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Slewing bearing is a kind of large bearing with special structure. It can bear large axial load, radial load and overturning moment and other comprehensive loads at the same time. It is widely used in various industries or equipment. Many friends are not very familiar with how to disassemble large slewing bearings. Next, the editor of Hengguan will introduce the four commonly used bearing disassembly methods for you.

1. Knock Disassembly Method

The knocking method is used in many disassembly scenarios. In simple terms, a copper rod or other soft metal material smaller than the inner diameter of the bearing is used to press against the shaft end (if the bearing is located at the end of the shaft), and a hand hammer is used to strike the inside of the bearing evenly and forcefully. The ring slowly dislodges the bearing. This method is simple and easy to implement, but the disadvantage is that it is easy to cause damage to the bearing, so be careful when operating, and pay attention that the impact point of the knock should not fall on the rolling body and cage of the bearing.

2. Pull out disassembly method

This method requires the help of a special puller, and the tool can be pulled evenly by rotating the handle to pull out the bearing. This method has better protection for the bearing, and the following points need to be paid attention to during operation:

1. The hook of the puller should be hooked to the inner ring of the bearing. If it is hooked on the outer ring by mistake, it may cause excessive loosening or damage to the bearing.

2. To align the screw rod with the center hole of the shaft, pay close attention to the force of the bearing during the pull-out process to avoid damage to the hook and bearing.

3. Pay attention to prevent the hook from slipping off, and the angle of the two feet of the puller should be less than 90°
3. Pushing and disassembling method

This method requires the use of a press to push the bearing, the working process is stable and reliable, and generally does not damage the machine and the bearing. Note that the force point of the press should be on the center of the shaft and cannot be biased. Common presses are manual, mechanical or hydraulic.

4. Heat treatment disassembly method

The bearings used for disassembly of the tight fit can be heat-treated first, and then pulled out with the help of a puller. Generally, the oil heated to about 100 ℃ is poured on the bearing to be disassembled. After the bearing ring is heated and expanded, the bearing is pulled out evenly with the help of a special puller. When disassembling this method, self-protection and oil recovery should be done to prevent burns; the shaft body should be wrapped before heating to prevent the bearing from being disassembled due to thermal expansion of the shaft body.

The above is the specific introduction of how to disassemble the large slewing bearing, I hope it can help you. Luoyang Hengguan Bearing Technology Co., Ltd. is a comprehensive entity enterprise integrating design, research and development, production, sales and service. The product quality is guaranteed. If you have other questions about bearings, you can give us leave a message or call us, we will serve you wholeheartedly!

The working principle and working way of the slewing bearing

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Slewing bearings are widely used in machinery, such as excavators, disintegrators, stackers and reclaimers, graders, road rollers, and roadheaders. Not only that, but also in new energy equipment, amusement equipment, metallurgical equipment, etc. It also has its application in China, so what is the working principle and working method of the slewing bearing? Below, the editor will take you to understand some knowledge about slewing bearings, you can learn and understand.

First, the working principle of the slewing bearing
The working principle of the slewing bearing is to move the object from sliding to rolling to reduce frictional resistance. It mainly relies on lubrication and friction to achieve the purpose of operation. Internally, it relies on the mutual friction of balls and steel rings. The friction between the bearing and other parts runs, rubs against each other, and drives the object to operate. Although it relies on friction to operate, lubrication is also indispensable. If it is used for a long time and the friction is too large, it will also affect the application of parts. Therefore, after using this kind of bearing for a period of time, it should be maintained in time. , brush some lubricating oil.

Single row ball slewing bearing 01 series
2. How the slewing bearing works

1. Point contact scrolling
The working principle of point contact rolling is mainly used for four-point contact ball slewing bearing and crossed roller slewing bearing. This working principle has higher requirements on the quality of steel balls for the combined bearing of point contact radial and axial forces, and the angle of the track should be uniform.

2. Rolling and sliding combined rolling type
The rolling-slip combined rolling working principle is mainly used for ball-column combined slewing bearings. This principle has small eccentricity and long service life, and has the advantages of a dual structure of rollers and balls.

3. Surface contact rolling and sliding combination
The working principle of surface contact rolling and sliding combination is mainly used for turntable bearings. Now the new type of turntable bearing has a compact structure and high precision, so it is suitable to use the surface contact rolling and sliding combination.

4. Surface contact rolling combination
The surface contact rolling combined working principle is mainly used for three-row roller slewing bearing, its advantage is that the contact surface is large, the bearing force is uniform and the rolling is flexible.

The above is the working principle and working method of the slewing bearing. I hope it will be helpful to you. Our Hengguan Bearing mainly deals in slewing bearings, slewing bearings, and slewing bearings. If you have any questions or needs, please contact us. Hengguan Bearing is looking forward to you. call.