Archive for category: Industry News

When the bearing is in use, due to its own quality and external conditions, its performance such as rotation accuracy, bearing capacity and anti-friction performance will change. When the performance index of a bearing is lower than the use requirements and affects normal work, This is called bearing damage or failure. The following is a brief introduction to the main failure modes of the bearing’s bearing by Hengguan Xiaobian.
​​
The main failure modes of bearings
​​
1. Metal corrosion occurs
​​
If the bearing lacks lubrication during use, it will be oxidized and rusted by the air. And don’t soak in water. The material of the bearing is stainless steel. When taking the bearing, wash off the sweat on the hand, apply mineral oil before taking it, especially in summer and rainy season, pay special attention to rust prevention.
​​
2. Excessive load or improper use
​​
Bearings cannot exceed their own load during use. Just like if the car pulls too heavy goods, it is easy to cause damage to the bearing. Therefore, in general, the bearings of trucks are more easily damaged than cars, and the reason is that many of the parts are overwhelmed.
​​
3. The bearing clearance is too small
​​
For example, the front wheels of the car use inclined-push bearings, and the clearance of the bearings needs to be adjusted. If the clearance is too large, it will cause abnormal noise, deflection, or wheel shaking. If the clearance is too small, it will accelerate the wear of the bearing. For old bearings, it is necessary to check whether there are burrs, scratches or cracks on the surface of the ball (column), and whether the radial clearance and axial clearance are qualified; for new bearings, it is necessary to check the bearing type first. is it right or not.
​​
4. Use inferior bearings
​​
Some bearings are produced by some small factories whose production process cannot meet the requirements. The accuracy of the shaft or bearing box is not accurate, and the steel of the bearing is directly pressed for production without proper treatment. Therefore, the service life of the produced bearings is not long.
​​
5. Improper installation operation
​​
When the bearing is installed, it is necessary to follow the installation steps of the bearing, and it cannot be installed and disassembled with brute force. Whether the bearing is installed correctly is closely related to the service life of the bearing. When the bearing is installed, it is not allowed to press strongly or directly hit the bearing with a hammer. Try not to take it directly by hand. The sweat on the hand will also cause the bearing to rust.
​​
6. Foreign body intrusion
​​
When installing or using the bearing, you need to use special tools, and try to avoid things such as cloth or short fibers, so as to prevent fibers from entering the bearing and causing damage. If the installation personnel use the copper rod knock-in method when installing the bearing, the axial force of the bearing may be uneven, which will cause problems such as deformation of the cage, damage to the rolling elements, and enlargement of the clearance. During the knocking process, copper powder may fly into the bearing cage, making the bearing prone to failure.
​​
The above are the main failure modes of bearings summarized by Hengguan Xiaobian for everyone. I believe that everyone will have a further understanding of the relevant content. We Hengguan Bearing produces various slewing bearings and slewing bearings, and supports non-standard customization. If you have related needs or questions about bearings, please feel free to call for consultation or leave a message. Looking forward to your call.

Slewing bearings are used in many large-scale mechanical equipment. With the continuous increase of operating time, some faults will inevitably occur in the bearing. For example, the leakage of lubricating oil is one of the common problems. Many friends reported that after the oil leakage of the slewing bearing, the grease remaining on the bearing surface will adhere to a lot of dirt, which is easy to cause corrosion to the bearing, which makes them very distressed and do not know how to deal with it. In order to solve everyone’s confusion, Hengguan Xiaobian will take you through this article to take you to understand the causes and treatment methods of oil leakage of slewing bearings.
​​
1. Reasons for oil leakage of slewing bearing
​​
1. Frequent filling of lubricating grease or thinning of grease
​​
The more lubricating oil is filled, the better. The oil filling period of the slewing bearing is generally between 150 and 250 hours. The specific adjustment can be made according to the operating conditions. However, if the filling is too frequent, it will cause grease leakage; The hydraulic oil or gear oil escapes into the cavity of the rotating ring gear, which will dilute the lubricating oil and cause oil leakage.
​​
2. Incorrect selection of grease
​​
Bearings and transmissions have suitable grease types. If unsuitable lubricating oil is added, the grease may become thin due to high temperature during operation, and the thin grease will be affected by the driving gear of the rotary motor. Push down to the upper section of the inner gear ring, and then flow into the bearing cavity through the inner oil seal, and leak from the outer oil seal.
​​
3. Defective or loose outer oil seal
​​
If the rotary oil seal is defective, it will cause partial or partial leakage of grease; in addition, the loose oil seal will also cause oil leakage, which can be observed when the equipment is running. If the oil seal and the equipment rotate at the same time, it means that the existing oil seal is in the sealing groove. It has been loose and needs to be replaced in time (be sure to pay attention to safety during inspection).
​​
4. The inner oil seal is damaged or the bearing clearance becomes larger
​​
The damage of the inner oil seal is one of the reasons for the oil leakage of the slewing bearing. You can open the lubricating grease inspection cover of the slewing ring gear to see if there are broken pieces of the oil seal; in addition, if the bearing clearance becomes larger, the grease will be easily squeezed out during operation. In this case, it is usually accompanied by abnormal noise or shaking of the rotating equipment.
Slewing ring
2. Treatment method for oil leakage of slewing bearing
​​
1. If the seal is aged or damaged, it is necessary to disassemble the old part and clean the sealing groove, and then insert the new seal into the sealing groove completely.
​​
2. If the leakage of the rotary motor causes the dilution or deterioration of the lubricating oil, the rotary motor must be repaired and the grease of the entire rotary gear ring must be replaced.
​​
3. In case of leakage caused by improper selection of grease, all the grease in the rotary gear ring should be replaced, and the same grease should also be used in the bearing cavity.
​​
4. According to the operating conditions of the equipment, reasonably control the oil filling cycle to avoid excessive filling.
​​
5. If the slewing bearing is damaged and cannot be repaired, it must be replaced with a new slewing bearing.

There is another call in the industry called the rotor bearing; it has a wide range of applications in industrial machinery, medical machinery and other industries, and is called “the joint of the machine”. If you want to ensure the quality of rotation support, you must strictly check each production process. Next, Hengguan Xiaobian will introduce the production process of the rotary support.

The production process process of the rotary support

1. Steel raw material cutting

The raw materials often used in the rotary support bearing are the overall hard -hard carbon -chromium bearing steel. The rotary supporting circle is used on the surface hard steel, which is generally made of 50MN steel. First, the billet must be cut according to the expected size of the bearings. The cutting bearing steel is mostly used for hard alloy saws with high hardness, abrasion resistance, strength and toughness.

2. Black forging

The billet forging is to heat the billet in the heating furnace and the forging into a round cake -shaped. The purpose is to ensure the reliability and life of the bearing.

3. Forging rings

Use the roller to make the billet parts into a ring -shaped steel ring. By forging, the internal tissue of the steel can be improved, so that the steel materials can be more intensive, plastic and impactful.

4. Coarse car processing

Put the steel rings behind the ring rings into the machine tool, perform rough vehicle processing, the vehicle out of various grooves, fix the steel ring on the milling machine, cut out the teeth, and provide conditions for the processing of the later grinding machine.
5. Hot treatment

Thermal treatment is also called quenching. In popular terms, the heat treatment link is to perform high -temperature treatment of bearing and car processing circles of forging and car processing, which can affect the uniformity of carburizing in the bearing circle and improve the abrasion resistance and hardness of the bearing.

6. Open hole processing

Installing holes in the end surface of the steel ring, pay attention to determining the heart and cutting angle when opening the hole. You can choose the drilling machine, hand -held electric drill and hand -shaking diamond for operation.

7. Exquisite grinding

Experience grinding is a refined part of the bearing. The fine grinding can affect the rotation flexibility of the bearings and the surface processing accuracy of the bearings. It once again conducts a precision car on the steel ring roller surface to modify the deformation generated by the front of the Taoist processes.

8. Architecture and packaging

Assemble the processed components; the assembled finished product bearing coated rust oil, sample quality inspection, packaging packaging, and enter the storage or sales process.

The above is the production process that Xiaobian summarizes the transition support. Presumably you must have a clearer understanding of the rotary branch. If you want to maintain the good performance of the bearings and extend its service life, you must strictly control the procurement level to ensure that the quality is intact; pay more attention to inspection and maintenance during operation. If you have other questions or needs about bearing, you can leave a message or call us. Luoyang Hengguan Bearing Technology Co., Ltd. looks forward to providing you with a solution.

The effect and method of the  slewing bearing lubrication
The turntable bearing is one of the large -scale bearing in the market. Many engineering machinery, equipment platforms, etc. are inseparable from the turntable bearings. We all know that the bearings must be well maintained and maintained during use, and it is important to maintain its good lubrication. So what are the effects of rotor bearing lubrication? What are the advantages and disadvantages of different lubrication? Next, I will introduce to everyone.

1. The role of the rotor bearing lubrication

1. Reduce friction and wear

The lubricating oil is filled to the embarrassment of the sets of the bearing, the rolling bodies and the holder to prevent the metal of each component from contacting each other, thereby reducing friction and wear, and maintaining the operating performance of the bearings.

2. Extend fatigue life

The lubrication of the bearing in operation is closely related to its fatigue life: If the lubrication of the rolling contact surface is good, the service life is prolonged; if the lubricating oil viscosity and the insufficient thickness of the lubricating oil film cause insufficient lubrication, the service life will be shortened.

3. Dowry friction heat and cool down

The cycle -to -oil method and other lubrication methods can be discharged by oil from the heat produced by the bearing itself or the heat generated by external transmission, which plays a cooling role to prevent the bearing excessive heat and lubricating oil itself.

4. Prevent foreign objects, etc.

Good lubrication of the rotor bearing can prevent foreign bodies from entering the bearing inside, and it also has a certain effect on preventing rust and corrosion of the bearing.
Rotor bearing
2. Method of Rotary Bearing Lubrication Method

1. Lubrication

Advantages: good oil liquidity, small internal friction coefficient, less energy consumption of overcoming friction, easy to enter the friction surface of each lubricant, better cooling effect, at the same time, you can make the impurities on the surface of friction or grinding. Metal particles take away.

Disadvantages: The thin oil lubrication method has higher requirements for sealing, and at the same time, the oil film cannot withstand large unit pressure.

2. Lubrication of thick oil

Advantages: The rotor bearing adopts a large range of adaptation to the properties of the load and the speed of motion speed by the thick oil lubrication method; in addition, it is easy to seal, lose less, and be less affected by temperature.

Disadvantages: The energy loss of the thick oil lubrication method is large, because of its poor liquidity and large internal friction coefficients. In addition, it is easy to lose lubrication performance when working at high temperature for a long time. It is necessary to do daily inspection and oil supplement replacement.

The overheating phenomenon of the slewing bearing during operation is one of the common faults of the bearing. Once the overheating phenomenon is found, it needs to be stopped in time for investigation and treatment. Improper handling will reduce the efficiency of mechanical equipment, and may cause serious damage to the bearing, increase unnecessary capital investment, and delay the construction period, which is not worth the loss. So what are the reasons for the overheating of the slewing bearing? How to deal with it? Next, the editor of Hengguan will give you a detailed introduction.
​​
1. The cause of overheating
​​
1. Poor lubrication
​​
Good lubrication is a necessary condition to ensure the normal operation of the bearing. If the bearing grease is insufficient or deteriorated, it will increase the friction and wear of the bearing, causing the bearing to overheat.
​​
2. Improper installation
​​
When the bearing is installed, it is required that the center line of the shaft and the bearing hole need to be coincident. If the installation is not correct, the bearing will have deflection, and torque will be generated when rotating, causing the bearing to overheat, wear, vibrate, and increase noise.
​​
3. Inspection and replacement are not timely
​​
The bearings in operation should be checked in time. If serious fatigue spalling, oxidation rust, pits, cracks, etc. are found, new bearings should be replaced in time, otherwise the bearings will be overheated, abnormal noise or even damage the mechanical equipment.
​​
4. Poor bearing quality or improper selection
​​
The slewing bearing generally works for a long time under strong stress. The accuracy, life and reliability of the main engine largely depend on the bearing. If the bearing itself is of poor quality or improperly selected at the time of purchase, its limit speed and load capacity will not match the equipment. , may cause overheating.
Slewing bearing
2. Processing method
​​
1. Purchase bearings with good quality and matching models
​​
When purchasing bearings, the quality must be strictly controlled, and factors such as the nature, size, temperature conditions, and rotation of the inner and outer rings of the bearing load should be comprehensively considered according to the equipment requirements to ensure that the model matches.
​​
2. Install the bearing according to the operating procedures
​​
When the bearing is installed, the coordination between the inner diameter of the bearing and the shaft, the outer diameter and the outer casing is very important. In addition, the center line of the shaft and the bearing hole needs to be coincident to prevent the bearing from overheating, vibration, abnormal noise, etc. caused by wear caused by improper installation.
​​
3. Regularly check and replenish grease
​​
Bearings should be regularly inspected for grease. If the lubrication is insufficient, it should be replenished in time. If the grease deteriorates, it should be replaced in time. Different types of grease cannot be mixed.
​​
4. Timely check the running condition of the bearing
​​
Timely check whether the bearing is bitten and worn, check whether there are cracks, rust, pits and other defects inside and outside the bearing, measure whether the bearing clearance exceeds the standard, and repair or replace the new bearing in time if there is an abnormality.