China high quality 922D/925 Slewing Ring Slewing Bearing Internal Gear Ball Bearing Structure with high quality

Merchandise Description

one. Firm introduction 

HangZhou King Slewing Bearing Technology Co., a professional maker and exporter of excavator slewing rings, its manufacturing unit is located in HangZhou city, ZheJiang Province,really shut to ZheJiang Port, products can be very easily transported all over the planet.

Our main merchandise is excavator slewing rings, we can now make a lot more than 1000 portion quantities to match with many CZPT excavator manufacturers, this sort of as CATERPILLAR,  , HITACHI, KOBELCO, HYUNDAI, VOLVO, DOOSAN, LIEBHERR, DAEWOO, JCB,Scenario, SUMITOMO, KATO,and so forth. 

Our engineers have far more than 20 a long time rich knowledge in learning excavator slewing rings and we have professional measuring team can go to customers ‘ workplace  to evaluate the previous or damaged slewing rings, then to generate the same replacements. We have our very own factory with latest CNC devices , such as vertical lathes, equipment hobbing devices, gear shaping devices, hole drilling mahines, quenching machines, vertical grinding equipment, turning equipment,etc. to meet customers’ quick supply needs. 

We will adhere to the “good quality very first, believability first” company philosophy and continuously supply our clients with superior good quality merchandise and companies. We warmly welcome customers from all in excess of the world to pay a visit to us and collectively to create a better potential !

2. Our slewing rings can match with far more than one thousand excavator designs. 

3. Our excavator part numbers as beneath:

4. Our excavator slewing ring photographs

5. Our slewing bearing packaging pictures 

six. Transportation way: By sea/ air/ rail/ highway/ TNT/DHL/UPS/Fedex,ect. 

7. Make contact with details

Selecting the Appropriate Ball Bearing for Your Application

When deciding on a Ball Bearing, there are many items to take into account. These variables include: the dimensions, lubricant type, presence of corrosive agents, stray electrical currents, and much more. It can be challenging to pick the proper variety, dimensions, and variety of ball bearing for your software. You ought to also cautiously determine the masses to establish the correct dimension. Right here are some ideas for deciding on the right Ball Bearing for your software.


The solitary-row ball bearing is one particular of the most common varieties of bearings. The inner and outer ring are made with raceway grooves that are shaped slightly more substantial than the balls. This sort of bearing has a minimal torque and can handle large-pace programs with minimum power decline. The radial dimensions of single-row ball bearings also differ, so it is feasible to discover one particular that fits your specific software. Apart from the over-pointed out benefits, solitary-row ball bearings are also obtainable with various grease stages and are widely applicable to purposes the place the area is constrained.
One-row ball bearings are also named angular-contact ball bearings. Due to the fact of their one-row design, they are not separable and can accommodate a substantial-pace, hefty-responsibility application. One-row angular-get in touch with ball bearings can only deal with axial load in one route, and they need to be installed in pairs for pure radial hundreds. Solitary-row ball bearings are a well-known variety of rolling bearings and can be utilized for a extensive variety of applications.


The self-aligning ball bearing was invented by Sven Wingquist, a plant engineer for a textile business in Sweden. Even though he was dependable for making production as productive as achievable, he quickly understood that the equipment he had in spot was not operating as successfully as it could. Despite the fact that ball bearings are fantastic for minimizing friction, they had been not flexible adequate to compensate for misalignments in the equipment.
Self-aligning ball bearings have two rows of balls and a frequent sphered raceway. The interior ring is curved and brings together the two rows of balls into one cage. These bearings can tolerate shaft misalignment and compensate for static angular flaws. They can be utilized in basic woodworking machinery, ventilators, and conveying gear. They are often the desired selection for apps where shaft alignment is an concern.


A Ceramic ball bearing is a type of substantial-efficiency bearing that is obtainable in equally complete-ceramic and hybrid kinds. The primary differences among ceramic and steel ball bearings are their construction, lubrication, and mobility. Higher-high quality ceramic ball bearings are sturdy, and they are ideal for corrosive and high-temperature purposes. The substance used to develop these bearings aids avoid electrolytic corrosion. They are also ideal for reducing the friction and lubrication needs.
Ceramic balls are harder and considerably less brittle than metal balls, which gives them a larger degree of rigidity. Ceramics also have a greater hardness, with a hardness of Rc75-80 in comparison to Rc58-64 for metal balls. Their large compressive strength is around 5 to 7 instances better than steel. In addition, they have a extremely low coefficient of friction, which permits them to spin at larger speeds and with less friction. This raises their lifespan and toughness, and decreases the power needed to change cranks.


Unlike traditional bearings, metal balls have a comparatively uniform hardness. Carbon steel, for occasion, is 2.1% carbon by bodyweight. In accordance to the American Iron and Metal Institute, copper content must be no a lot more than .40% and manganese articles ought to not be more than 1.65 g/cm3. After carbonizing, steel balls bear a method referred to as sizing, which increases their roundness geometry and hardness.
The main variations between steel ball bearings and ceramic ball bearings can be traced to their various resources. Ceramic balls are produced from zirconium dioxide or silicon nitride. Silicon nitride is more difficult than metal and resists shocks. The result is enhanced pace and longer support life. Polyoxymethylene acetal (PMMA) bearing balls are identified for their stiffness, power, and tolerance, but are not as typical as steel ball bearings.


The most common varieties of plastic ball bearings are manufactured of polypropylene or PTFE. These bearings are employed in purposes necessitating greater chemical resistance. Polypropylene is a structural polymer that offers outstanding actual physical and chemical properties, which includes excellent resistance to natural solvents and degreasing agents. Its light-weight, lower moisture absorption charge, and excellent warmth resistance make it an outstanding option for large-temperature programs. Nonetheless, plastic bearings are not without their disadvantages, specifically when operating at very higher temperatures or below hefty hundreds.
Compared to metal bearings, plastic ball-bearings do not demand lubrication. They also are highly corrosion-resistant, generating them an superb selection for wash-down programs. They are also post-, autoclave-, and gamma sterilizable. Numerous standard steel ball-bearings are not able to manage the substantial temperatures of foods processing or swimming swimming pools. In addition to large temperature purposes, plastic ball bearings are resistant to chemical compounds, including chlorine.


Plastic sliding bearings are molded bearings made of engineering plastic. With self-lubricating modification technological innovation, these bearings can be created by injection molding of plastic beads. They are commonly used in different industries these kinds of as place of work equipment, health and automotive products. In addition to plastic bearings, glass balls are utilized in a range of other apps, such as health-related tools. Glass ball bearings have excellent corrosion resistance, exceptional mechanical properties, and are electrically insulators.
Plastic ball bearings are manufactured of all-plastic races and cages. These bearings are suited for programs that are exposed to acids and alkalis. Because they are less costly than glass balls, plastic ball bearings are popular in chemical-exposed environments. Stainless steel balls are also resistant to heat and corrosion. But the primary drawback of plastic ball bearings is that they are not as robust as glass balls. So, if bodyweight and sounds is your primary worry, consider making use of plastic balls instead.


The world-wide miniature ball bearing market is envisioned to attain US$ 2.39 Billion by 2027, at a CAGR of 7.2%. Progress in the region is attributed to technological progression and govt initiatives. Countries this sort of as India and China are attracting FDIs and emphasizing the institution of a worldwide production hub. This is boosting the market place for miniature ball bearings. The miniscule ball bearings are made in little portions and are extremely tiny.
Some makers make miniature ball bearings in different supplies and designs. Chrome metal is the most popular materials for miniature ball bearings since of its high load potential, lower sound homes, and reduced expense. But the value of stainless metal miniature bearings is minimal, given that the sum of metal employed is nominal. Stainless steel miniature bearings are the smallest in measurement. Therefore, you can decide on stainless steel mini ball bearings for higher-velocity applications.

Angular-make contact with

Angular-contact ball bearings have 3 elements: a cage, inner ring, and balls. Angular-make contact with ball bearings can support high axial and radial loads. Numerous design and style and manufacturing attributes make angular-make contact with ball bearings suited for a range of applications. Some functions of this bearing kind include a particular lubricant, different cage materials, and different coatings.
The dimension of an angular-make contact with ball bearing is determined by the design and style models: outer ring width, axial load, and radial load. Depending on the sort of software, an angular-contact ball bearing might be created in double-row, triple-row, or quadruple-row configurations. Angular speak to ball bearings can be categorised according to their layout models, which assortment from metric to imperial. A increased ABEC variety signifies tighter tolerances. To decide the tolerance equal of a particular bearing, check with a normal Angular-speak to ball bearing desk.
Angular-speak to ball bearings characteristic higher and lower-shoulder configurations. They have two-dimensional races that accommodate axial and radial hundreds. They are available in self-retaining units with sound internal and outer rings, and ball and cage assemblies. Cages manufactured of forged and wrought brass are the most common, but light-weight phenolic cages are also offered. The latter is a greater choice because it does not take up oil and has reduced rolling friction.


When it will come to the construction of a ball bearing, high-high quality uncooked resources are a crucial component. These components not only have an effect on the general top quality of a ball bearing, but also affect the cost. Which is why you must pay out near consideration to raw substance top quality. In addition to that, uncooked components need to be analyzed numerous occasions before the production approach to guarantee high quality. Study on for some details about the distinct kinds of materials utilised to make ball bearings.
Metal is the most widespread substance for ball bearings. Most ball bearings include stainless metal balls, which are remarkably corrosion-resistant. They are also resistant to saltwater and alkalis. Nevertheless, stainless metal balls are heavier than plastic ones, and they are also magnetic, which may be a drawback in some purposes. If you’re seeking for a metallic-free of charge alternative, glass balls are the way to go. They’re durable, lightweight, and resistant to a extensive assortment of chemicals.

China high quality 922D/925 Slewing Ring Slewing Bearing Internal Gear Ball Bearing Structure     with high qualityChina high quality 922D/925 Slewing Ring Slewing Bearing Internal Gear Ball Bearing Structure     with high quality