aluminium alloy wire-race bearing

Wire raceway slewing bearing, it is a kind of the rolling ring of composite inlay and supporting the production of special structure bearing.Bearing main body material can be some special material: according to the operating conditions such as special aluminum alloy material, special copper and other metals or metal materials. quenching spring wire embedded in the bearing ring to serve as a bearing raceway, has the characteristics of high precision, wear resistance, easy maintenance.
Double row cylindrical roller wire-raceway slewing bearing was deliveried in March 2014, recognised by the height of the foreign users.UWE research and development of steel wire raceway slewing bearing to ensure the bearing strong corrosion resistance, light weight, and is applicable to cold, heat, and many other very dirty environment and to ensure the bearing under the characteristics of high precision operation, carrying capacity, impact resistance, high reliability.
Due to the high contact stress is mainly borne by steel wire, bearing ring (the research and development for monolithic) was ingredients.After damage and bearing steel wire rolling, can be removed to replace, the characteristics of two kinds of greatly reduces the cost of transportation, transportation efficiency, repair costs and downtime work time.
This kind of bearing difficult to design and manufacture, UWE technology belongs to the domestic advanced level, are widely used in light machinery, medical equipment, military field and other special work areas, etc.

Slewing Ring Bearing Overhauling

Revolving inspection is necessary to check correct installation after the slewing ring is intalled. For small size machinery, we can  revolve the slewing bearing by hand, to ensure whether can run smoothly. Inspection items include revolving not smoothly due to foreign objects, bruises and indentation; moment force unstable due to unproper installation and unproper processing of support; over moment force due to backlash too small, installation error and sealing friction. If there is no abnormal status, dynamic run of the slewing bearing can be proceeded.

single row cross roller slewing ring

UWE single row cross roller slewing ring is mainly made up of inside and outside rings. It features compact in design, light in weight, small in assembling clearance, and high in installing precision. As the rollers are crossed arranged by 1:1, it is suitable for high precision mounting and capable to bear axial force, radial force and resultant torque simultaneously.
This series have widely application in lift transport aircraft, construction machinery, and military products.

010.25.315 slewing ring

1.Bearing No.: 010.25.315 

2.Dimensions:d*D*H:222*408*70 mm

3.Gear option: without gears

4.Rolling element: balls

5.Ball material:GCr15

6.Ring Material: 42CrMo, 50Mn, steel 45# ,stainless steel,aluminum alloy

7.Seal: NBR

8.Normalizing hardness: 187HB-241HB

9.Quench & temper hardness: 229HB-269HB

10.Raceway hardness after quenching: 55HRC-62HRC

11.Sevice:OEM Service Offered/Design Service Offered/Buyer Label Offered

010.25.315 is single row four point contact ball slewing bearing is made of two rings, compact for, light in weight, balls contact with the raceway by four points.It can bear axial force, radial force and overturning moment at the same time,Customers can select inner gear type or outer gear type according to different applications. It is easy to use and install.

It is widely used in construction machines,such as rotary transfer machines, manpulators, excavators and so on.

As long as you supply drawings, we can manufacture in customized.

UWE single row four point contact ball slewing rings is composed of two seat rings, which design in compact structure and light weight, steel ball contact with the circular raceway at four points; it can bear the axial force, radial force and the tilting moment at the same time. UWE Single-row four point contact ball ring has the features of compact in design, and light in weight. The balls roll on the circular race at four points, so it can undertake the axial force, radial force and tipping moment at the same time.

This series of four point contact ball bearings are suitable in many engineering machinery, such as rotary conveyor welding operation machine, small cranes, small and medium-sized excavators,slewing conveyer, welding manipulator, light and medium duty crane, and other construction machinery

requirements of slewing rings

Structures with slewing bearings normally require design types which are able to transmit all occurring loads with one bearing. These are normally axial, radial and tilting moments.These bearings must furthermore be suited to withstand the complete spectrum of operating conditions, as for example
• High and low temperatures including temperature fluctuations
• Overpressures and negative pressures
• Deformations of the companion structure
• Weight limits
• Limitation of the frictional torque
• Low maintenance
• Corrosion resistance
• Magnetoresistive behaviour
• Open center to run through supply lines or as access opening
Design and dimensioning
The bearings are individually designed and dimensioned for every application, this means that the buyer is not required to customize to specified geometries of catalogue bearings and characteristics but the bearing can be designed according to the customer’s structure and the specification.

UWE wire-race bearing

UWE wire-race bearings fulfill the described requirements. Due to the fact that the rolling elements do not roll on the bearing rings but on the wires which are in the bearing rings, the material selection and material combination of the components are nearly unlimited.
We are ready to develop a tailor-made solution for new applications at any time.In addition, wire-race bearings offer the possibility of a more economical repair since it is often sufficient to replace individual components such as wire races, rolling elements, spacers and seals in order to reuse a repaired bearing.

Application of slewing ring

Single-Row Ball Slewing Rings (01-Series)
The slewing rings can be processed with special requirements: teeth cage and surface or full teeth quenching, preload, centering, special seal (warm fluorination seal, double labium seal, iron seal, iron and copper spacer or holder), etc.
Applications: Handling equipments, platform lifts, yaw bearings, rotary tables, cranes, excavators and other construction machines, welding construction, manufacture equipment and construction engineering.

Cross Roller Slewing Rings (11-Series)
Cross roller slewing rings with single-row roller raceway angle of 45°. More evenly preset potentiometer by different encumbrances and higher dynamic life than same constructed ball slewing rings. Since the product requires higher precision in manufacturing, the costs are higher compared to the ball slewing rings. But thanks to the higher running accuracy and the well-proportioned turn, it is used widely.
Applications: Robots, antennas, medical equipments, machine tools, filling and packing machines.

Double-Row Ball Slewing Rings (02-Series)
Normal double-row ball slewing rings have eight point raceways with either same or different balls. This series is widely used in heavy machinery, wind energy blade bearings and heavy construction machinery etc. Preloads, precision classes,special cages or seals & hardened gears can all be individually manufactured, according to your needs. With high requirements on design, technology and production, this series is used in heavy encumbrances , but because of low demand of installation and connection, it is more economical and practical than triple-row roller slewing bearings. Applications: Pitch bearings (blade bearings), cranes, excalvators, construction machines,other machines and equipments.

Triple-Row Roller Slewing Rings (13-series)
Triple-row roller slewing rings can be used in the most load requirements with narrow required space. Besides synthetic spacers,if demanded cages can be offered in synthal, steel, viton or brass. Special seal and surface handling like zinc plating,painting ensures applications for offshore. This series requires corresponding design and heat treatment of the raceways.thanks to the higher running reliability, stability and long durability, it is widely used in heavy-duty machinery. Applications: Deep boring equipments, fire fighting vehicles, steel plant equipment, self loading trucks,consturction machinery like cranes and other machinery and equipment.

UWE slewing ring for excavators

UWE excavator slewing bearings/slewing rings have a high load carrying capacity, a versatile range of applications and are highly cost-effective. Due to their design, a single bearing can reliably support radial, axial and tilting moment loads. It is therefore possible in many cases to replace bearing arrangements comprising a combination of radial and axial bearings by a single bearing.

This reduces, in some cases considerably, the costs and work required in the design of the adjacent construction and the fitting of bearings. It is made up of mounting holes, inner gear or outer gear, grease hole and sealing device. It has many positive characteristics; compact structure, light weight, good rigidity, steady speed and high precision.

UWE can offer a wide range of  excavators, like  Komatsu, Hitachi, Kobelco, Caterpillar, Hyundai and so on. Small size four-point contact ball slewing bearings often used for this application.Single row four point contact bll bearing is composed of two seatings. This type slewing bearing ring/slewing bearing/slewing ring features compact in design,light in weight, the balls contact with the circular raceway at four moment may be simultaneously. 

Slewing rings medical application

UWE slewing rings dedicated to medical applications are designed for a high rotating speed, constant rotating torque and low noise,specifically for Radiotherapy applications.
UWE also supplies slewing ring for pharmaceutical industry for all production steps, mixing, filling, cleaning.The perfect circularity and the high precision of our bearing are the result of our specific finishing and the matching of the rings and the rolling elements. We also propose innovative sealing solutions to avoid any leakage in a clean environment.

Slewing ring for wind energy

UWE is a leading Chinese supplier of blade bearing and yaw bearings for wind energy, from Small Wind Turbines of 750kW to the latest Multi-MW Offshore turbines up to 5MW.
The custom designed UWE slewing bearings are engineered in close cooperation with turbine manufacturers: our dedicated engineering team is at your service for new developments and design optimisation.UWE slewing bearings are delivered worldwide.

Slewing ring for precision application

UWE is the expert in high precision preloaded crossed roller bearings for precision applications like robotics, machine-tools, indexing and positioning tables, CNC tilting tables, milling heads, and many others. UWE crossed roller bearings from medium diameter 148 mm to 2455 mm for small to extra large rotary tables.UWE three row roller bearings with inner diameter 200 mm to 1030 mm interchangeable with the reference product on the market.
Our R & D department offers full technical support for specific projects and simultaneous engineering leading to modifying existing products or developing new ones to answer to the most special inquiries.
Thanks to raceway finish by grinding, systematic matching of the rings and preload, we offer the best reliability and precision, proven by extensive in-house testing, for the applications all along the required lifetime.

Slewing ring for packaging application

Packaging and bottling industry are synonymous of high productivity link with very high technology process. UWE has developed in accordance with those high requirements,slewing rings with large diameters of these applications. These particular slewing bearings require strict process control. Low and constant rotating torque, as well as weight saving by light design are also key factors to ensure our customers the best products.Our quality gives a very low level of maintenance.Especially for PET bottles, UWE is present at all steps of the production from heating of the preform to labelling of the final products.

Slewing ring for construction application

Because of the light structure of the crane, UWE slewing ring is an essential and strategic part.Our design matches perfectly the life time required by the customer. The quality and the precision of our manufacturing are the key to ensure good running after many dismantling operations of the crane.Truck telescopic crane requiring high stiffness with high capacity is also one of the applications where UWE bearings  make the difference thanks to unique preloading technology.UWE slewing ring participate to the construction of thousands of buildings everyday all around the world with total safety.
Public works does cover a wide range of applications, since its very beginning UWE has developed specifics slewing rings that suits all the particularities of those applications.Thanks to latest technology calculation, design is permanently optimized to follow our customers new developments, in order to offer what the market needs.Concrete mixers requires smooth rotation with low torque to avoid creation of heat and vibration in the system.Quality, lifetime of UWE bearings.

Slewing ring for mining application

Stacker reclaimers, Bucket Wheel, Spreaders, as well as ship loaders and unloaders are very demanding applications.The high capacity of UWE slewing rings is obtained by the control of the hardening process of the raceways and the gear.  Double rows of balls for heavy loads & compact solution or Combination of Rollers and Ball for very high axial loads & moments as well as small radials efforts.UWE also manufacture slewing rings for application in underground mining where compact & reliable solutions are required for an aggressive environment.

Slewing ring for offshore application

Thanks to UWE engineering and R&D department, We are able to provide tailor made solutions being used on wide range of Offshoreand Marine application.UWE Slewing Rings can help customers to do certificate like DNV, ABS, API, GL, BV, LLOYDS for examples..We also offer unique sealing complying with seawater environment, as well as thin stainless steel layer to increase lifetime on seal contact surface.For large Offshore cranes, Bulk Handling, Marine cranes our special design is also a popular solution, meeting requirements for huge axial loads& tilting moments.

Slewing ring for handling application

The stiffness & preload of UWE slewing ring are a perfect solution for the highest manlift. Those applications require precision in manoeuvring and safety while working in difficult environment subject to wind. Especially for firetrucks the highest stiffness ensure the highest efficiency in the works.Our special design gives very compact bearings, which is essential for this product. Our process control gives the customer a very simple solution to set up the pinion in order to save time during the mounting of the machines.Handling container in harbour requires more and more efficiency, UWE supply for example Rubber tyre gantry crane &Reach Stackers for this environment. For lots of various Handling applications UWE supplies all range of Slewing Ring matching the different requirement of our customers.

slewing bearing installation

Bearing installation
When you get UWE bearing, please mount slewing bearing as instructions below:
(1)Require the installation surface has sufficient strength and rigidity.
(2)Clean bearing and surface of the components, each surface can not have corrosion.
(3)The mounting surface should have locating pin or locating mouth, to prevent the bearing ran to each other.
(4)After contact with the mounting surface, you should check fit clearance with a feeler, the gap can be filled with plastic or a padded to prevent deformation of the bolt tightening.
(5)When installing, ensure that the bearing quenching soft belt should be located in the non-load bearing area or not often load area or load minimum area.
(6)Bearing mounting bolts must be of high strength bolts, according to the loading conditions, select the appropriate intensity level.
(7)Installation washer should adopt flat washer to ensure bearing pre load uniformly.
(8)Bolt preload requires sufficient strength, the preload force is 0.7 times to the bolt material yield limit. Best installed using a torque wrench to ensure uniform force and improve quality of the installation.
(9)Tighten bolts should adopt a "star" cross or symmetrical diagonal tightening way, first pretension and then follow the strength requirements and tighten the bolts.Tighten the bolts needs a torque wrench .
(10)For toothed products,must do the gear backlash detection before tighten the mounting bolts. To ensure the minimum or maximum diameter  (with logo) of the gear ring beating meet the design requirements (available 0.05 ~ 0.3mm feeler gauge calibration) .

Slewing ring installation related parameters requirements
(1)Mounting surface roughness is less than Ra12.5.
(2)The maximum allowable values of the installation surface flatness  can be determined according to actual working condition, but the flatness change must be uniform increasing or decreasing, within the scope of the circumference of a circle, not allowed to appear more than two (including two) peak, and 100 mm face runout is not allowed within the scope of more than 0.015 mm
(3)Maximum value on the radial direction inclination of the mounting surface is 0.04mm .
(4)Prestressing force of bolt installation must be determined according to the strength level of the bolt,the pre load force is 0.7 times to the bolt material yield limit.

slewing bearing manufacturer

As a leading slewing bearing manufacturer,UWE is engaged in designing,developing and researching slewing bearing, with the big customer of GPC,Sinovel Wind Group,ZWZ,and SKF China. Professional design technology,Strict quality control and considerable after-sales service make UWE owning the famous customers.
UWE slewing ring outer diameter from 700mm-5000mm.Ring Material: 42CrMo, 50Mn, steel 45# ,aluminum alloy,stainless steel. We supply OEM service/design service/buyer Label.

UWE slewing bearing quality is controlled strictly,we send a full set of inspection documents from raw material to finished products.Each piece of slewing ring has UWE nameplate, which makes all slewing bearings 100% traceability. All slewing bearing warranty time is 12 months, and we supply repair service for the expiration products charging less fees.

We are the manufacturer of slewing bearing, which means we could offer best price and direct technical support. This makes UWE more competitive than trading companies. 

UWE slewing ring applications

UWE larged size slewing rings can accommodate a combined load, i.e. axial, radial loads and tilting moment.They are usually provided with holes for fixing bolts; internal, external or no gear; and lubrication holes and seals, which allow a compact and economical arrangement. In addition they often enable the elimination of many components necessary in the classical bearing arrangement.
UWE slewing rings have proven effectiveness in the following applications:
– construction, mobile and tower cranes,
– shovel, digging-wheel excavators,
– revolving grabs and winches,
– graders,
– logging industry machines including feller bunchers,
– loaders, vehicles for waste removal, hydraulic grippers,
– axles and undercarriages,
– assembly and access platforms,
– robots, manipulators and positioners,
– machine tools,
–special equipment (rescue vehicles, aerials, feller bunchers and tunnel machines, drilling equipment, wind turbines and cleaning and bottle filling machines).
Combining compactness, accuracy, smooth operation with relative high rigidity, together with simple mounting and operation reliability are qualities that allow the use of these bearings in all industrial branches.

Aluminum Alloy Bearing Characteristics

Apart from the weight savings already mentioned UWE light alloy wire-race bearings are particularly advantageous in applications where the bearing is required to withstand shock loads and travelling vibrations. Due to aluminium’s smaller modulus of elasticity in comparison with steel and the additional elastic deformation between the races and race beds in the bearing rings, shock loads are absorbed much more smoothly, so that brinelling in the races and striation can be prevented.The high elasticity of the wrought aluminium alloy characterized by a low modulus of elasticity causes the elongation differential to be fully absorbed by the wire-race bearing.