2014年8月11日星期一
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.
2014年8月2日星期六
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.
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 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.
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.
2014年7月29日星期二
Aluminium wire race bearing
Wire race bearing is a special structure bearing with the ring and raceway composited inlay. Bearing main body material can be choosen with some special material according to the operating conditions such as special aluminum alloy material, special copper and other metals or metal materials. Using quenched high performance special spring wire embedded in the bearing ring to serve as a bearing raceway with the characteristics of high precision, wear resistance, easy maintenance.
UWE designed and developed double row cylindrical roller wire raceway slewing bearing ,which was deliveried in March 2014, recognised by the height of the foreign users. The research and development of steel wire raceway slewing bearing ensure the bearing strong corrosion resistance, light weight, and it is applicable to cold, heat, and many other very dirty environment. Meanwhile the wire race bearing has characteristics of high precision operation, carrying capacity, impact resistance, high reliability.
Due to the high contact stress is mainly borne by steel wire, rings can be seperated. Bearing steel wire rolling can be removed to replace if damaged, the characteristics greatly reduces the cost of transportation, transportation efficiency, repair costs and downtime working time (rapid change in order to avoid delay in wartime aircraft).
This kind of bearing manufacturing is difficult, UWE technology belongs to the domestic advanced level, UWE aluminum wire race bearings are widely used in light machinery, medical equipment, military field and other special work areas, etc.
UWE designed and developed double row cylindrical roller wire raceway slewing bearing ,which was deliveried in March 2014, recognised by the height of the foreign users. The research and development of steel wire raceway slewing bearing ensure the bearing strong corrosion resistance, light weight, and it is applicable to cold, heat, and many other very dirty environment. Meanwhile the wire race bearing has characteristics of high precision operation, carrying capacity, impact resistance, high reliability.
Due to the high contact stress is mainly borne by steel wire, rings can be seperated. Bearing steel wire rolling can be removed to replace if damaged, the characteristics greatly reduces the cost of transportation, transportation efficiency, repair costs and downtime working time (rapid change in order to avoid delay in wartime aircraft).
This kind of bearing manufacturing is difficult, UWE technology belongs to the domestic advanced level, UWE aluminum wire race bearings are widely used in light machinery, medical equipment, military field and other special work areas, etc.
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