China slewing bearing manufacturer
Slewing bearings are the core components that enable rotational motion. Slewing bearings comprise an inner ring and an outer ring, one of which usually incorporates a gear.
Together with attachment holes in both rings, they enable an optimized power transmission with a simple and quick connection between adjacent machine components.
The bearing raceways, in conjunction with the rolling elements and cages or spacers, are designed to accommodate loads acting singly or in combination and in any direction.
Slewing bearing is also called rotary bearing. Some people also call it: slewing bearing and slewing bearing. English names are slewing bearing, slewing ring bearing, turntable bearing, and slewing ring.
It is an important transmission part of the machine that needs to make relative rotary motion between two objects and bear axial force, radial force, and overturning moment at the same time.
WIER slewing rings have been widely used in ship equipment, engineering machinery, light industry machinery, metallurgical machinery, medical machinery, wind power, industrial machinery, and other industries.
WIER manufactures standard and customized slewing bearings in various designs, with outside diameters from 0.1 to 18 m to meet the demands of particular applications.
Single Row Four Point Contact Ball Slewing Bearings
Single-row four-point contact ball slewing bearings consist of two seat rings, featuring a compact structure and light weight.
The steel balls make four-point contact with the arc-shaped raceway, enabling the bearing to simultaneously withstand axial forces, radial forces, and overturning moments.
It is suitable for use in engineering machinery such as rotary conveyors, welding manipulators, medium and small-sized cranes, and excavators.
Single Row Crossed Roller Slewing Bearings
Single-row crossed roller slewing bearings consist of two seat rings, featuring a compact structure, light weight, high manufacturing precision, small assembly clearance, and high requirements for installation accuracy.
The rollers are arranged in a 1:1 crossed pattern, enabling them to simultaneously withstand axial forces, overturning moments, and large radial forces.
They are widely used in lifting and transportation equipment, construction machinery, and military products.
Double Row Ball Slewing Bearing
Double row ball slewing bearing has three seat rings; the steel ball and the spacing block can be directly arranged into the upper and lower races, and two rows of upper and lower steel balls with different diameters are fitted according to the stress condition.
This kind of open assembly is very convenient, for the upper and lower bearing raceway arc angles are 90°, which can bear large axial forces and tilting moments. When the radial force is greater than 0.1 times the axial force, the raceway needs to be specially designed.
Double row different ball slewing bearing's axial and radial sizes are relatively large and solid in structure, so they are especially suitable for the medium diameter tower cranes, truck-mounted cranes, etc., and loading and unloading machinery.
Three Row Roller Slewing Bearings
The three-row roller slewing bearing features three seat rings, with separate upper, lower, and radial raceways, enabling precise determination of the load on each row of rollers.
It can simultaneously withstand various loads and is the product with the highest load-bearing capacity among the four types.
It has large shaft and radial dimensions and a robust structure. It is particularly suitable for heavy machinery requiring a large diameter, such as bucket wheel excavators, wheel cranes, ship cranes, steel ladle rotators, and large-tonnage truck cranes.
Thin Section Slewing bearings
Light slewing bearings have the same structural form as ordinary slewing bearings but are lighter in weight, more compact in structure, and thinner in design.
They are widely used in fields such as food machinery, filling machinery, and environmental protection machinery.
Flanged Slewing Bearing
Flanged slewing bearings are specialized rotary bearings designed to withstand high axial, radial, and moment loads while facilitating smooth and precise rotation in various applications.
They are characterized by a flange on their outer or inner ring, facilitating easy mounting and, in some cases, providing greater stiffness.
Flanged slewing bearings are widely used across different industries, including construction, wind turbines, heavy machinery, and crane systems.
A Leader of Slewing Bearing Manufacturer.
WIER slewing bearing, a professional custom manufacturer of slewing bearings, with 20 years of experience, you do not need to change the existing working conditions; the slewing bearings we produce can perfectly replace your existing products.
Our full-process production capabilities, from raw materials (blanks) to finished products, serve your industry.
Professional Manufacturing, Reliable Quality
Over 20 years of experience in slewing bearing production with strict quality control ensures stable and dependable performance trusted by global clients.
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Complete Series for All Applications
We offer a full range of series - 01, HS, Q, 11, HJ, Thin-section, and Flange types - widely used in construction machinery, wind power, medical, military, and other industries.
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High Precision, Smooth Operation
Manufactured with advanced CNC equipment, our bearings feature high gear accuracy and smooth meshing, extending equipment lifespan.
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Custom Solutions Available
Support for non-standard and customized slewing bearings based on your drawings or special working conditions, with fast delivery and guaranteed compatibility.
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Premium Materials, Durable Performance
Produced with high-quality alloy steel and treated with surface hardening and anti-rust processes, our bearings perform reliably in harsh environments.
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Comprehensive Service & Support
From technical selection to installation guidance and after-sales service, we respond quickly to customer needs and ensure efficient project delivery.
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Type
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1. Single Row Four Point Contact Ball Slewing Bearings.
2. Single Row Crossed Roller Slewing Bearings
3. Double Row Ball Slewing Bearings
4. Three Row Roller Slewing Bearings
5. Thin Section Slewing bearings (Light type).
6. Thin Section Slewing Bearings (Flange type)
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Gear type
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No gear, internal gear, or External gear.
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Rolling elements
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Steel Ball/Cylinder Roller
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Rolling Elements Material
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GCr5/GCr15SiMn/Customized
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Bearing Material
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50Mn/42CrMo/42CrMo4V/Customized
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Cage Material
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Nylon/ steel /copper
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Structure
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taper pin, Mounting holes, inner ring, grease fitting, load plug, seals, roller, spacer balls, or separators
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Outer diameter
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50-10000mm
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Bore size
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50-10000mm
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Mounting hole
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Through hole/Tapped hole
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Raceway hardness
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55-62 HRC
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Inner and outer ring modulation hardness
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229-269HB/Customized
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Embellish grease
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EP2 lithium lubricating grease
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Application area
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Slewing Bearing for New Energy
Slewing Bearing for Engineering Machinery
Slewing Bearing for Automation Equipment
Slewing Bearing for Amusement Machinery
Slewing Bearing for Agricultural Machinery
Slewing Bearing for Logistics Warehousing
Slewing Bearing for Environmental Protection Machinery
Slewing Bearing for Mining Machinery
Slewing Bearing for Forest Machinery
Slewing Bearing For Light Machinery
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Used For
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Earth moving machinery, excavator, disintegrator, stacker reclaimer, grader, roller, dynamic rammer, rock drilling machinery, roadheader, concrete machinery, feeding machinery, lifting machinery, foundation treatment machinery, port equipment, new energy equipment, metallurgical equipment, Ladle turret, stacker crane, bucket wheel machine, solar heliostat tracking system, port crane, Cabling machine, tower crane, offshore platform, Ferris wheel, Palletizing robot, rotary metallurgical furnace, can packing machine, wind blade transporter, shield tunneling machine, tube push bench, and so on.
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Packing details
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1. Filling with anti-rust oil
2. Covered with Plastic paper
3. Covered with kraft paper
4. Carved with Blue tie
5. Put in wooden box
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Brand Name
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OEM or WIER
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Origin
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China
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Warranty
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12 months
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Step1.Forgings
1. Scleet top suppliers, sampling and testing of their raw materials in random to makesure that raw material meets national standards and mechanical properties meet product design requirements.
2. After the forgings enter the factory, the quality inspectors will perform the appearance inspection and the dimensional measurement to ensure that there are no obvious defects. and keep enough margin to process the finished products.
2. Rough turning
1. Descaling rough turning: according to the size of finished products, reserve enough size margins.
2. Ultrasound flaw detection: the forgings after rough turning are detected by ultrasound, whether there are any defects in the material: such as blowhole. slag inclusion. lamination and so on.
3. Tempering treatment: according to the national standard or the special reguirements of customers, the tempering treatment could improve the mechanical properties.
4. Hardness testing of tempering treatment: Testing whether the overall hardness of forgings is qualified according to quenching and tempering hardness requirements.
3. Precision turning before quenching
According to the type and size of the raceway structure, a sufficient margin is reserved to ensure that the machine deformation and quenching deformation can be eliminated. and try to remaining amount is required to be as small as possible.
4. Quenching and temper stability of raceway.
The raceway is quenched by medium frequency quenching process. The hardness of quenching area reaches HR(SS-62and the effective depth is not less than 3 mm. After quenching, the raceway is tempered stably to eliminate quenching stress, reduce subsequent processing deformation and reduce the risk of raceway cracking.
5. Detection of hardness, depth and crack
Detection of hardness. effective depth and crack in quenched area. especially initial position.
6. Quenched semi-finish turning
Processing datum level, providing datum for subsequent processing of teeth, holes, etc.
7. Tooth processing
According to different kinds of tooth shape, processing methods such as shaping, hobbing and milling can be selected.
The accuracy level can meet 7-10 grades. If higher accuracy is needed, grinding can meet 4-6 grades.
8. Hardening, Tempering Stability and Testing of Teeth
In order to meet the strength and service life of the teeth, high frequency quenching is carried out on the tooth surface root and top according to different requirements. The hardness can meet HRC 40-55 and the depth can meet 1.5mmTempering stabilization after quenching , the quenching stress can be eliminated, the cracking risk of the quenched part can be reduced, and the hardness and crack detection can be carried out after quenching.
9. Hole Processing and Detection
Control the chord length, wall thickness. aperture and other items in the machining process and correct them in time
Inspection for threads with high accuracy requirements
10. Fine grinding and testing
For high-precision products, precise grinding is used to effectively control the parameters of ring ellipse, wall thickness and flatness, so as to ensure that the precision of finished products meets the requirements of standards or customer drawings.
11. Match clearance
Accurate measurement of part size, Calculating spare parts allowance, according to the requirements of the drawings to match clearance.
12. Assembling
Remove ring burs and clean up. Install corresponding size and number of rollers, cages. seals and other accessories in strict accordance with the requirements of assembly drawings. Rotate to detect whether the rotation is flexible and whether there is any abnormal noise.
13. Finished product testing
The assembly is completed, detecting whether all aspects meet technical standards.
14. Installation of Sign Mark
Install sign and logo according to customer requirement.
15. Fill grease and Packaging
1. Before product packaging. add corresponding brand and type grease according to customer's requirements to protect raceway from damage.
2. Export wooden boxes suitable for sea transportation are used to ensure the safe arrival of goods at different transportation distances, storage times and regions.
WIER, China's powerful manufacturer.
WIER's headquarters is located in Beijing, China. We are a factory that manufactures gears, slewing bearings, and sheet metal stamping. We have three business divisions and production bases for gears, rotary bearings, and sheet metal stamping. We provide ODM/OEM manufacturing services for many well-known companies both domestically and internationally.
We have been providing high-quality gears, slewing bearings, and component solutions for industries such as agricultural machinery, forestry machinery, construction machinery, building, petroleum machinery, mining, mechanical workshops, textile machinery, reducers, packaging, printing, ships, tobacco machinery, paper machinery, automobiles, pump gears, robots, automation industries, machine tool transmissions, and many others.
WIER is equipped with over 200 sets of processing and testing equipment, 7 automated assembly lines, 7 packaging lines, and 2 environmental cleaning, drying, and painting assembly lines. Due to our advanced equipment and rich manufacturing experience, many customers from various countries have chosen to cooperate with us, such as the United States, Belgium, Italy, Canada, Germany, the United Arab Emirates, Norway, South Korea, Southeast Asia, etc. At present, the share of products exported each year accounts for more than 80% of the total.
20 years of Slewing bearings manufacturing experience, supporting non-standard customization
We have three production bases, seven production lines, over 200 sets of production equipment, and more than 180 employees.
OEM Services
We are proficient in providing OEM services to customers. From prototypes to mass production, WIER offers efficient manufacturing support to customers.
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Engineering Capabilities
We can provide you with product design, product optimization, and performance analysis. We are constantly improving and innovating our processes, such as in rolling, broaching, shaving, grinding, heat treatment, forging, etc., to offer you high-quality products and services.
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High Cost-effectiveness
We can provide inventory support for mainframe manufacturers. WIER will ship goods to you according to the pre-set inventory plan. This mature business model can help you reduce or eliminate internal excess inventory, thereby saving your budget.
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Fast Delivery
Design, development, manufacturing, assembly, and testing are all carried out in our factory, so our delivery time is very fast.
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1. Q: Are you trading company or manufacturer ?
A: We are professional slewing bearing manufacturer with 20 years' experience.
2. Q: How long is your delivery time?
A: Generally it is 4-5 days if the goods are in stock. or it is 45 days if the goods are not in stock, Also it is according to quantity.
3. Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample, it is extra.
4. Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shipment.
5. Q: Can you provide special customization according to the working conditions?
A: Sure, we can design and produce the slewing bearings for different working conditions.
6. Q: How about your guarantee?
A: We provide lifelong after-sales technical service.
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