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Recently, Luoyang Hengguan Bearing Technology Co., Ltd. (hereinafter referred to as Hengguan Bearing), the anti -corrosion -proof rotation support for the production of production has been smoothly offline, and passed the finished product acceptance to the customer’s hands. The rotary support bearing requires high requirements and belongs to high precision -grade bearing. The constant crown bearing is strictly produced in accordance with the customer’s confirmation drawings, and the quality and quantity are shipped on schedule.

This product is a high-precision grade, accuracy level P5, and requires: 1. Tooth accuracy 6 national standard; 2. Entering tooth surface, 3. High-frequency quenching of the tooth surface, hardness HRC45-55, 4. Anti-corrosion prevention and prevention prevention surface Correction treatment. 5. The finished product clearance is 0-0.06; the end-faced jump is within 0.05, 6. This product belongs to a single-row four-point ball tooth-type reckless support structure with an outer diameter of 1100mm, the inner and outer circle is 40, very thin and easy to deform, processing processing, processing processing, processing processing, processing processing, processing processing, processing process Not easy.

In response to the above requirements, the constant crown bearing began to control from the source, and the quality of the finished product was fully reached. The constant coronary bearing uses 42CRMO to adjust the material to ensure that the hardness of the raw material is within the range of HB229-269, and the performance of the product material is stable and reliable from the source. In the process of conventional production technology, technicians, in response to the high accuracy of the product, high accuracy, very thin and easy to deform, and other characteristics, innovative improvements on conventional production processes are made. Entry, orderly, innovative technology, scientific production, and finished product quality are also expected: complete standards.
And for the special operating conditions and environmental requirements of the customer’s anticorrosive corrosion and corrosion, the anti -corrosion hair black treatment of the rotary support support (so -called hacking is a commonly used method for chemical surface treatment. The principle is to cause a metal surface to produce a layer of oxide film, in order Isolation of the air to achieve the purpose of rust -proof. When the appearance requirements are not high, you can use black treatment. The surface of the steel parts is black, which is also known as the blue). The commonly used anti -corrosion -proof methods include painting, rust -proof wax, galvanized nickel plating, sandblasting, etc. These methods have been done, and the appropriate appearance treatment methods are selected for different working conditions.

There is always no better, only more appropriate, the constant crown bearing, guided by customer needs, and conducting flexible customized production to innovate and improve the real needs of customers. The constant crown bearing, the future of intelligence, and only work hard for the high -quality rotation support!

Slewing bearing is also known as slewing ring bearing. Due to the wide application of slewing bearing and the relatively low cost, proper repair and maintenance are very important to prolong the life of the bearing, and normal maintenance can ensure the normal operation of the bearing. Work, today Hengguan Xiaobian has sorted out the detailed maintenance and daily maintenance methods of slewing ring bearings to share with you, let’s learn together!
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1. Maintenance and daily maintenance methods of slewing ring bearings in use
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1. Before starting the bearing, refill with new grease according to the working conditions.
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2. Grease should be added to the slewing ring bearing regularly. According to the type of bearing and different bearings, the time for adding lubricating oil is as follows:
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a: Ball type: add grease every 100 hours of operation;
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b: Roller type: add grease every 50 hours of operation;
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For example, under high temperature, dusty, high temperature, high temperature and continuous working conditions, the filling time of grease must be shortened and ensured once every 50 hours; in the case of normal operation, it should be applied once every 150 hours , In the case of heavy work, it should be painted every 75 hours. During long periods of downtime, the lubricating oil should be added once, and the raceway should be filled with each refueling until the oil overflows from the seal. When the grease is added, the rotating bearing should be slowly transferred to allow the raceway filled with grease evenly.
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3. During the period of use, the dirt on the surface of the slewing bearing should be cleaned regularly, and attention should be paid to whether the bearing sealing ring is aging, cracked, damaged, or falling off. If any of these situations occur, they should be treated immediately to prevent impurities from entering the raceway. And the loss of grease, and apply grease after replacement, so as to avoid the rolling elements and rollers from being stuck or corroded.
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4. Due to the influence of various factors in practical application, suitable grease can be selected according to the actual situation, such as graphite grease No. 3, graphite grease No. 4, industrial grease, No. 203 grease, high and low temperature bearing grease 7002 No. 2, aluminum-based grease No. 2, etc. Special attention should be paid to the slewing ring bearing after 100 hours of operation, it should be preloaded, and then every 500 times of operation, it must be fully used.
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5. After the accumulative operation of the device for 2000 hours, if one bolt is loose, which is lower than 80% of the specified torque, this bolt should be replaced with two adjacent bolts; if 20% of the bolts are loose and less than 80% of the specified torque, apply New bolt replacement. After 14,000 cumulative operating hours, all bolts are replaced with new ones.
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6. During the operation, pay attention to the operating conditions of the slewing bearing. If noise, impact, or sudden increase in power is found, the operation must be stopped immediately until all faults are eliminated. If necessary, it must be disassembled.
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7. When using the slewing ring bearing, it is strictly forbidden to use water to directly wash the rotating bearing to prevent the water flow from flowing into the raceway and cause rust; prevent hard objects from approaching or entering the meshing area to avoid damage or cause unnecessary trouble.
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8. Customers have a common misunderstanding about the maintenance of slewing bearings. They think that the lubricating oil of the slewing bearing is the same as the lubricating cycle of the big and small arms, and it needs to be pumped every day. But the opposite is true. If the lubrication cycle is too short, it will lead to excessive lubricating oil in the bearing, causing the seal ring to rupture and leak. In the case of leakage, there will also be impurities infiltrated into the bearing, affecting the work of the bearing. Usually the lubrication time of the rotary bearing is 250 hours. In the process of oiling, turn the machine while stirring, and oiling every 15 degrees is enough. According to your work intensity, it can be adjusted appropriately for different usage situations. Lubrication is usually done once a week or so.
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9. When lubricating the rotary motor, it is necessary to know that the lubrication cycle of the rotary motor is 1000 hours. In normal work, the amount of rotary oil should be checked from the oil dipstick. Sometimes abnormal wear occurs. We need to open the window of the large gear to see See if the lubricating oil leaks from the seal ring into the large gear cavity. In addition to the above maintenance measures, we should also frequently check whether the screws of the gear and the sealing ring of the rotary bearing are damaged. Some small gaps outside will be covered by mud. If it is not found in time, it is easy to cause the turntable to break or even cause an accident.
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10. Maintenance points of large turntable bearings: large turntable bearings are composed of large gears, reducers, center sections, etc. Generally, when we open the cover next to the boom base, we can see the lubrication condition inside the big gear and the wear condition of the gear. In the process of mechanical operation, the dustproof ring at the rotating center joint will be worn out. If it rains, the rainwater will penetrate into the cavity of the large ring gear through the leakage of the rotating center joint, causing the hub to accumulate water. This will greatly affect the service life of the slewing bearing. When the excavator is working, the grease in the cavity is diluted by water, and the lubrication effect is not ideal, which will increase the wear of the ring gear. Long-term soaking will cause the iron filings on the ring gear to fall off, resulting in abnormal rotation.
slewing ring bearing
2. Storage and maintenance method of unused slewing ring bearings
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1. When the slewing bearing leaves the factory, grease has been added to the raceway, and the surface of the slewing bearing is coated with anti-rust lubricating oil. The packaging of the slewing bearing can be individually or integrally packaged according to customer requirements.
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2. If it is not installed, the outer surface needs to be lubricated once every six months to prevent rusting. In the south, it is once every three months.
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3. The raceway of the slewing bearing should be lubricated once a year, and the bearing should be rotated during maintenance to ensure the elasticity of rotation. After the repair, it must be restored to the original state of the slewing bearing and wrapped with film.
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4. When placing the bearing, please place it in a non-corrosive medium, dry and flat room, and must not be immersed in water.
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5. When placing the bearing, it should be placed smoothly, not vertically or inclined. When laying flat (except for the entire package), arrange at least 3-5 spacers in the circumferential direction, and the peripheral positions of the upper and lower blocks should be the same. Bearings that have not been used for many years, take special care when starting, especially in rainy areas.

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.

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1. Knock Disassembly Method
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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.
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2. Pull out disassembly method
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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:
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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.
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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.
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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°
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3. Pushing and disassembling method
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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.
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4. Heat treatment disassembly method
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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.
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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 We leave a message or call us, we will serve you wholeheartedly!
Previous: Causes and anti-rust methods of slewing bearing rust

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. Simply put, a copper rod or other soft metal material smaller than the inner diameter of the bearing is used 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.
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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°
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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.
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4. Heat treatment disassembly method
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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.
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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 We leave a message or call us, we will serve you wholeheartedly!