Product Description

1. Company introduction 

HangZhou King Slewing Bearing Technology Co.,Ltd.is a professional manufacturer and exporter of excavator slewing rings, its factory is located in HangZhou city, ZheJiang Province,very close to ZheJiang Port, goods can be easily transported all over the world.

Our main product is excavator slewing rings, we can now produce more than 1000 part numbers to match with many famous excavator brands, such as  HITACHI, KOBELCO, HYUNDAI, VOLVO, DOOSAN, DAEWOO, JCB,CASE, SUMITOMO, KATO,etc. 

Our engineers have more than 20 years rich experience in studying excavator slewing rings and we have professional measuring team can go to customers ‘ workplace  to measure the old or broken slewing rings, then to produce the same replacements. We have our own factory with latest CNC machines , such as vertical lathes, gear hobbing machines, gear shaping machines, hole drilling mahines, quenching machines, vertical grinding machines, turning machines,etc. to meet customers’ quick delivery requirements. 

We will adhere to the “quality first, credibility first” business philosophy and continually provide our clients with superior quality products and services. We warmly welcome customers from all over the world to visit us and together to build a better future !

2. Our slewing rings can match with more than 1000 excavator models. 

3. Our excavator part numbers as below:

Excavator model number Part number Excavator model number Part number
PC15   20M-25-81201 PC240-8 206-25-00301
PC18  20M-25-81201 PC270   206-25-00400
PC75UU-2   201-25-61100 PC290   206-25-00400
PC100-6 203-25-62100 PC300 207-25-31112
PC110R  206-25-11100 PC300-3  207-25-00571
PC120-5   203-25-51200 PC300-6   207-25-61100
PC120-6Z  203-25-61100 PC300-7   207-25-61100
PC120-6 203-25-62100  PC300-7      207-25-61700
PC130-6        203-25-62100 PC300LC-5    207-25-51100
PC130-7     SAA4D95L PC300LC-6    207-25-61100
PC150LCK-6   21P-25-K1100 PC300LC-7    207-25-61100
PC160-6K  21P-25-K1100 PC300-8 207-25-61100
PC160-7    21K-25-5711 PC300-8   207-25-00121
PC200   205-25-00015 PC340   207-25-61200
PC210NlC-7K    20Y-25-00301 PC380LC-6K 207-25-61200
PC200-5 20Y-25-11103 PC400-7 208-25-61100
PC200-8   206-25-5710 PC400LC-5     208-25-52101
PC200-6      20Y-25-25710     PC400LC-5    208-25-52100
PC200-6Z   20Y-25-22200 PC400LC-5    208-25-52101
PC200-6     S6D102-1 PC400LC-5    208-25-A2100
PC200-7    20Y-25-21200 PC400LC-6    208-25-61100
PC220-7     120Y-25-21300 PC400   208-25-61100
PC200LC-7 20Y-25-21200 PC450LC-6K  208-25-61100
PC220    205-25-00571 PC450-8 208-25-71230
PC220LC-6LE     20Y-25-A1101 PC450-8 207-25-31180
PC220-6  20Y-25-21200 PC450-8 208-25-61100 
PC220-6  20Y-25-21100 PC600-7   21M-25-11100
PC220-7  206-25-00301  pc600-7 21M-25-11102
PC220-8  206-25-00320 PC600LC-6   21M-25-11100
PC220LC-8   206-25-00301 PC600LC-8       21M-25-11101
PC228US-3 22U-25-5711 PC750    209-25-71100 
PC228  22U-25-05710 PC800LC-8  209-25-5712
PC228  22U-25-05710 PC800-6  209-25-5711
PC-228-USLC-2 22U-25-11102 PC1250  21N-25-5711
PC240-3  205-25-0571  PC2000  
PC240-7      206-25-00301    

4. Our excavator slewing ring pictures

5. Our slewing bearing packaging pictures 

6. Transportation way: By sea/ air/ rail/ road/ TNT/DHL/UPS/Fedex,ect. 

7. Contact information

 

US $1,000-6,500
/ Set
|
1 Set

(Min. Order)

###

Standard or Nonstandard: Standard
Feature: Short Delivery Time
Sealing Gland: We Use Seal Rings
Rolling-Element Number: Single Row, Three Row for Huge Slewing Bearing
Roller Type: Four Point Contact
Material: Alloy Steel

###

Customization:

###

209-25-00102 Slewing Bearing Slewing Ring Used for PC800LC-8 Made in China Slewing Ring Bearing Roller Bearing Turntable Bearing Extern
Excavator model number Part number Excavator model number Part number
PC15   20M-25-81201 PC240-8 206-25-00301
PC18  20M-25-81201 PC270   206-25-00400
PC75UU-2   201-25-61100 PC290   206-25-00400
PC100-6 203-25-62100 PC300 207-25-31112
PC110R  206-25-11100 PC300-3  207-25-00022
PC120-5   203-25-51200 PC300-6   207-25-61100
PC120-6Z  203-25-61100 PC300-7   207-25-61100
PC120-6 203-25-62100  PC300-7      207-25-61700
PC130-6        203-25-62100 PC300LC-5    207-25-51100
PC130-7     SAA4D95L PC300LC-6    207-25-61100
PC150LCK-6   21P-25-K1100 PC300LC-7    207-25-61100
PC160-6K  21P-25-K1100 PC300-8 207-25-61100
PC160-7    21K-25-00101 PC300-8   207-25-00121
PC200   205-25-00015 PC340   207-25-61200
PC210NlC-7K    20Y-25-00301 PC380LC-6K 207-25-61200
PC200-5 20Y-25-11103 PC400-7 208-25-61100
PC200-8   206-25-00200 PC400LC-5     208-25-52101
PC200-6      20Y-25-20200     PC400LC-5    208-25-52100
PC200-6Z   20Y-25-22200 PC400LC-5    208-25-52101
PC200-6     S6D102-1 PC400LC-5    208-25-A2100
PC200-7    20Y-25-21200 PC400LC-6    208-25-61100
PC220-7     120Y-25-21300 PC400   208-25-61100
PC200LC-7 20Y-25-21200 PC450LC-6K  208-25-61100
PC220    205-25-00022 PC450-8 208-25-71230
PC220LC-6LE     20Y-25-A1101 PC450-8 207-25-31180
PC220-6  20Y-25-21200 PC450-8 208-25-61100 
PC220-6  20Y-25-21100 PC600-7   21M-25-11100
PC220-7  206-25-00301  pc600-7 21M-25-11102
PC220-8  206-25-00320 PC600LC-6   21M-25-11100
PC220LC-8   206-25-00301 PC600LC-8       21M-25-11101
PC228US-3 22U-25-00201 PC750    209-25-71100 
PC228  22U-25-00210 PC800LC-8  209-25-00102
PC228  22U-25-00220 PC800-6  209-25-00101
PC-228-USLC-2 22U-25-11102 PC1250  21N-25-00201
PC240-3  205-25-00023  PC2000  
PC240-7      206-25-00301    
US $1,000-6,500
/ Set
|
1 Set

(Min. Order)

###

Standard or Nonstandard: Standard
Feature: Short Delivery Time
Sealing Gland: We Use Seal Rings
Rolling-Element Number: Single Row, Three Row for Huge Slewing Bearing
Roller Type: Four Point Contact
Material: Alloy Steel

###

Customization:

###

209-25-00102 Slewing Bearing Slewing Ring Used for PC800LC-8 Made in China Slewing Ring Bearing Roller Bearing Turntable Bearing Extern
Excavator model number Part number Excavator model number Part number
PC15   20M-25-81201 PC240-8 206-25-00301
PC18  20M-25-81201 PC270   206-25-00400
PC75UU-2   201-25-61100 PC290   206-25-00400
PC100-6 203-25-62100 PC300 207-25-31112
PC110R  206-25-11100 PC300-3  207-25-00022
PC120-5   203-25-51200 PC300-6   207-25-61100
PC120-6Z  203-25-61100 PC300-7   207-25-61100
PC120-6 203-25-62100  PC300-7      207-25-61700
PC130-6        203-25-62100 PC300LC-5    207-25-51100
PC130-7     SAA4D95L PC300LC-6    207-25-61100
PC150LCK-6   21P-25-K1100 PC300LC-7    207-25-61100
PC160-6K  21P-25-K1100 PC300-8 207-25-61100
PC160-7    21K-25-00101 PC300-8   207-25-00121
PC200   205-25-00015 PC340   207-25-61200
PC210NlC-7K    20Y-25-00301 PC380LC-6K 207-25-61200
PC200-5 20Y-25-11103 PC400-7 208-25-61100
PC200-8   206-25-00200 PC400LC-5     208-25-52101
PC200-6      20Y-25-20200     PC400LC-5    208-25-52100
PC200-6Z   20Y-25-22200 PC400LC-5    208-25-52101
PC200-6     S6D102-1 PC400LC-5    208-25-A2100
PC200-7    20Y-25-21200 PC400LC-6    208-25-61100
PC220-7     120Y-25-21300 PC400   208-25-61100
PC200LC-7 20Y-25-21200 PC450LC-6K  208-25-61100
PC220    205-25-00022 PC450-8 208-25-71230
PC220LC-6LE     20Y-25-A1101 PC450-8 207-25-31180
PC220-6  20Y-25-21200 PC450-8 208-25-61100 
PC220-6  20Y-25-21100 PC600-7   21M-25-11100
PC220-7  206-25-00301  pc600-7 21M-25-11102
PC220-8  206-25-00320 PC600LC-6   21M-25-11100
PC220LC-8   206-25-00301 PC600LC-8       21M-25-11101
PC228US-3 22U-25-00201 PC750    209-25-71100 
PC228  22U-25-00210 PC800LC-8  209-25-00102
PC228  22U-25-00220 PC800-6  209-25-00101
PC-228-USLC-2 22U-25-11102 PC1250  21N-25-00201
PC240-3  205-25-00023  PC2000  
PC240-7      206-25-00301    

How to Replace a Bearing

If you want to select a bearing for a specific application, you should know a few basics. This article will give you an overview of ball, angular contact, and sliding-contact bearings. You can choose a bearing according to the application based on the characteristics of its material and preload. If you are not sure how to choose a bearing, try experimenting with it. The next step is to understand the Z-axis, which is the axes along which the bearing moves.

Z axis

When it comes to replacing your Z axis bearing, there are several things you must know. First, you need to make sure that the bearings are seated correctly. Then, you should check the tension and rotation of each one. To ensure that both bearings are equally tensioned, you should flex the Core to the desired angle. This will keep the Z axis perpendicular to the work surface. To do this, first remove the Z axis bearing from its housing and insert it into the Z axis motor plate. Next, insert the flanged bearing into the Z axis motor plate and secure it with two M5x8mm button head cap screws.
Make sure that the bearing plate and the Z Coupler part are flush and have equal spacing. The spacing between the two parts is important, as too much spacing will cause the leadscrew to become tight. The screws should be very loose, with the exception of the ones that engage the nylocks. After installing the bearing, the next step is to start the Z axis. Once this is done, you’ll be able to move it around with a stepper.

Angular contact

bearing
Ball bearings are made with angular contacts that result in an angle between the bearing’s races. While the axial load moves in one direction through the bearing, the radial load follows a curved path, tending to separate the races axially. In order to minimize this frictional effect, angular contact bearings are designed with the same contact angle on the inner and outer races. The contact angle must be chosen to match the relative proportions of the axial and radial loads. Generally, a larger contact angle supports a higher axial load, while reducing radial load.
Ball bearings are the most common type of angular contact bearings. Angular contact ball bearings are used in many applications, but their primary purpose is in the spindle of a machine tool. These bearings are suitable for high-speed, precision rotation. Their radial load capacity is proportional to the angular contact angle, so larger contact angles tend to enlarge with speed. Angular contact ball bearings are available in single and double-row configurations.
Angular contact ball bearings are a great choice for applications that involve axial loads and complex shapes. These bearings have raceways on the inner and outer rings and mutual displacement along the axial axis. Their axial load bearing capacity increases as the contact Angle a rises. Angular contact ball bearings can withstand loads up to five times their initial weight! For those who are new to bearings, there are many resources online dedicated to the subject.
Despite their complexity, angular contact ball bearings are highly versatile and can be used in a wide range of applications. Their angular contact enables them to withstand moderate radial and thrust loads. Unlike some other bearings, angular contact ball bearings can be positioned in tandem to reduce friction. They also feature a preload mechanism that removes excess play while the bearing is in use.
Angular contact ball bearings are made with different lubricants and cage materials. Standard cages for angular contact ball bearings correspond to Table 1. Some are machined synthetic resins while others are molded polyamide. These cage materials are used to further enhance the bearing’s axial load capacity. Further, angular contact ball bearings can withstand high speeds and radial loads. Compared to radial contact ball bearings, angular contact ball bearings offer the greatest flexibility.

Ball bearings

bearing
Ball bearings are circular structures with two separate rings. The smaller ring is mounted on a shaft. The inner ring has a groove on the outer diameter that acts as a path for the balls. Both the inner and outer ring surfaces are finished with very high precision and tolerance. The outer ring is the circular structure with the rolling elements. These elements can take many forms. The inner and outer races are generally made of steel or ceramic.
Silicon nitride ceramic balls have good corrosion resistance and lightweight, but are more expensive than aluminum oxide balls. They also exhibit an insulating effect and are self-lubricating. Silicon nitride is also suitable for high-temperature environments. However, this type of material has the disadvantage of wearing out rapidly and is prone to cracking and shattering, as is the case with bearing steel and glass. It’s also less resistant to heat than aluminum oxide, so it’s best to buy aluminum nitride or ceramic ball bearings for applications that are subjected to extremely high temperatures.
Another type of ball bearings is the thrust bearing. It has a special design that accommodates forces in both axial and radial directions. It is also called a bidirectional bearing because its races are side-by-side. Axial ball bearings use a side-by-side design, and axial balls are used when the loads are transmitted through the wheel. However, they have poor axial support and are prone to separating during heavy radial loads.
The basic idea behind ball bearings is to reduce friction. By reducing friction, you’ll be able to transfer more energy, have less erosion, and improve the life of your machine. With today’s advances in technology, ball bearings can perform better than ever before. From iron to steel to plastics, the materials used in bearings have improved dramatically. Bearings may also incorporate an electromagnetic field. So, it’s best to select the right one for your machine.
The life expectancy of ball bearings depends on many factors, including the operating speed, lubrication, and temperature. A single million-rpm ball bearing can handle between one and five million rotations. As long as its surface contact area is as small as possible, it’s likely to be serviceable for at least one million rotations. However, the average lifespan of ball bearings depends on the application and operating conditions. Fortunately, most bearings can handle a million or more rotations before they start showing signs of fatigue.

Sliding-contact bearings

bearing
The basic principle behind sliding-contact bearings is that two surfaces move in contact with one another. This type of bearing works best in situations where the surfaces are made of dissimilar materials. For instance, a steel shaft shouldn’t run in a bronze-lined bore, or vice versa. Instead, one element should be harder than the other, since wear would concentrate in that area. In addition, abrasive particles tend to force themselves into the softer surface, causing a groove to wear in that part.
Sliding-contact bearings have low coefficients of friction and are commonly used in low-speed applications. Unlike ball and roller bearings, sliding contact bearings have to be lubricated on both sides of the contacting surfaces to minimize wear and tear. Sliding-contact bearings generally are made of ceramics, brass, and polymers. Because of their lower friction, they are less accurate than rolling-element bearings.
Sliding-contact bearings are also known as plain or sleeve bearings. They have a sliding motion between their two surfaces, which is reduced by lubrication. This type of bearing is often used in rotary applications and as guide mechanisms. In addition to providing sliding action, sliding-contact bearings are self-lubricating and have high load-carrying capacities. They are typically available in two different types: plain bearings and thrust bearings.
Sliding-contact linear bearing systems consist of a moving structure (called the carriage or slide) and the surfaces on which the two elements slide. The surfaces on which the bearing and journal move are called rails, ways, or guides. A bore hole is a complex geometry, and a minimum oil film thickness h0 is usually used at the line of centers. It is possible to have a sliding-contact bearing in a pillow block.
Because these bearings are porous, they can absorb 15 to 30% of the lubrication oil. This material is commonly used in automobile and machine tools. Many non-metallic materials are used as bearings. One example is rubber, which offers excellent shock absorbency and embeddability. While rubber has poor strength and thermal conductivity, it is commonly used in deep-well pumps and centrifugal pumps. This material has high impact strength, but is not as rigid as steel.

China 209-25-00102 Slewing Bearing Slewing Ring Used for PC800LC-8 Made in China Slewing Ring Bearing Roller Bearing Turntable Bearing Extern     with Best SalesChina 209-25-00102 Slewing Bearing Slewing Ring Used for PC800LC-8 Made in China Slewing Ring Bearing Roller Bearing Turntable Bearing Extern     with Best Sales
editor by czh 2022-11-27