UWE slewing ring installation munual

1.Slewing Ring Identification
If UWE finished bearings, all of these are accompanied by UWE signage. The signage is located near the soft belt (ball holes)of bearing raceway or according to user’s requirements . Signage on the identification code (Product Code) is the only available queries.
2.Important marker
(1)There is a raceway hardening soft belt mark on the outer ring and inner ring in the finished bearing.Soft position is on ball filling hole without marking if bearing has ball hole ring; marking "small hole" or compliance with "S" corresponding to hardened soft belt if there is no ball hole ring. Soft belt and marker can be determined according to user requirements.
(2)For toothed products, there are three biggest teeth relative to the raceway beating, located smallest (the tooth), maximum (external gear) diameters on the beating circle, and has a circular hole marker on the  tooth tip surface. Painting with red or green on the top of tooth.
3.Check before assembly
(1)Carefully open the package, not to damage the bearing surfaces and seals, especially bearing end faces, otherwise it will affect the quality of the bearing assembly. If you find the hole plugs shedding, will require detailed examination, cleaning, must ensure no foreign object into the lubrication raceway.
(2)Check and make sure that the installing bearing is matching your host.
(3)Confirm that the installing bearing has no shock and damage during transport.
(4)Check the seal is not broken.
(5)Check the hole location and ensure that no foreign object into the lubrication raceway.
(6)Check the beating tooth maximum point whether clear.
(7)Check whether the location marker on the soft belt clear.
(8)Check the anticorrosive coating surface is not damaged.
More information about slewing ring, please visit www.uwe-bearing.com or email sales@uwe-bearing.com

UWE keeps designing and developing

UWE is experts in special bearings and satisfy unusual wishes. When antifriction is needed,we offer a broad range of options for this purpose. Parameters such as load rating, stiffness, preload and adjustment are just as variable as height, width and bore shape or the different materials.
The choice of design and materialfor the surrounding component is flexible. Steel, aluminium, non-corrosive, plastic or brass -our customers have free choice.This applies equally to the rolling elements, cages and race rings. There are different materials available for these too. The adjustability of the bearings does not stop there: we have different gears, seals, diameters, ball profiles etc. for our customers. It is not just the selection range that is unique, but also the way the bearings are made: in contrast to conventional bearings,the rolling process does not occur directly between the rolling elements and enclosed design, but rather smoothly on four open race rings. The raceways are matched to the ball diameter using a special grinding process. This special design principle produces an extremely compact bearing, which also suits very small spaces. Another plus: the low friction and high load capacity of our Antifriction Bearings reduce energy consumption.
More information about slewing ring, please visit www.uwe-bearing.com or email sales@uwe-bearing.com

Wire Race Ball Bearings

UWE wire race ball bearings comprise four race rings, balls,ball cage.The four race rings fit their raceway thanks to a specially developed grinding procedure-exactly adjusted to the ball diameter. Therefore, the rolling process does not occur directly between the rolling elements and enclosed construction, but rather smoothly on the four open race rings.
This special construction principle produces an extremely compact bearing, which also suits very small spaces. Another plus: the low friction and high load capacity of UWE wire race bearings reduce energy consumption.
More information about wire race bearing, please visit www.uwe-bearing.com or email sales@uwe-bearing.com

Slewing Ring Transport and Storage

During the transportation and the storage of UWE slewing rings, horizontal position is recommended; pay great attention to avoid any stroke, particularly in the radial direction.The slewing bearings must not be exposed to the elements,and must be used in short.It's recommended storage in shelter out of all weathers.If the expected storage time is superior to twelve months, it is advisable to ask for the treatment of those surfaces that normally don't receive it.On request, it is possible to have the surfaces treated with protective oil, washable with naphtha or grease removers.The slewing bearings are usually packed on a pallet of the same size, and wrapped with PE material; on request, It is also possible to supply a special packaging (according to the specific needs), using supports and materials fit to guarantee the best static and dynamic conditions for the transport and the storage of our bearings.

Special design, heavy-duty performance of wire race bearing

When weight savings and corrosion resistance needed, UWE wire race bearings are designed sucessfully. Wire race bearings are in a variety of military and commercial applications, especially wire race roller bearing.They give the load capacity of steel bearings with 60% less weight. UWE wire race bearings have stainless steel wire raceways in aluminum (or steel) support rings. In addition to saving weight, this design is more tolerant of non-rigid or out-of-flat mounting structures since it minimizes increases in rotational torque. With stainless steel wire and rolling elements and anodized aluminum support rings, UWE wire race bearings are very corrosion-resistant. They also offer thermal compatibility for support rings and mounting structures (i.e., aluminum with aluminum, or steel with steel).Bolt holes are provided for mounting.Various configurations are available,usually custom-designed to support a specified combination of thrust, radial and moment loads. When weight savings and corrosion resistance needed, UWE wire race bearings are designed sucessfully. Wire race bearings are in a variety of military and commercial applications, especially wire race roller bearing.They give the load capacity of steel bearings with 60% less weight. UWE wire race bearings have stainless steel wire raceways in aluminum (or steel) support rings. In addition to saving weight, this design is more tolerant of non-rigid or out-of-flat mounting structures since it minimizes increases in rotational torque. With stainless steel wire and rolling elements and anodized aluminum support rings, UWE wire race bearings are very corrosion-resistant. They also offer thermal compatibility for support rings and mounting structures (i.e., aluminum with aluminum, or steel with steel).Bolt holes are provided for mounting.Various configurations are available,usually custom-designed to support a specified combination of thrust, radial and moment loads. 
For more information about wire race bearing, please visit ww.uwe-bearing.com or email at: sales@uwe-bearing.com

Slewing bearing service life

In antifriction slewing bearing technology, theoretical life is a well-known term. Due to a multitude of influential factors, nominal life acc. to DIN/ISO281 cannot in practice be taken as an absolute value but as a reference value and design guide. Not all slewing bearingswill reach their theoretical life, although most will generally exceed it,often by several times.Theoretical life criteria cannot be applied directly to large-diameter slewing bearings, particularly with slewing bearings performing intermittent slewing motions or slow rotations.In most applications the speed of rotation in the race will be relatively low. Therefore, the smooth operation and precise running of the slewing bearing are not adversely influenced by wear or by the sporadic occurrence of pittings. It is,therefore, not customary to design large-diameter slewing bearings destined for slewing or slow rotating motion on the basis of their theoretical life. For better definition, the term “service life”was introduced. A slewing bearing has reached its service life when torque resistance progressively increases, or when wear phenomena have progressed so far that the function of the bearing is jeopardized.Large diameter antifriction bearings are used in highly diverse operating conditions. The modes of operation can be entirely different such as slewing over different angles, different operating cycles, oscillating motions, or continuous rotation. Therefore, apart from static aspects,these dynamic influences have to be taken into account.
The slewing ring service life determined with the aid of the curves shown is only valid for bearings carrying out oscillating motions or slow rotations. This method is not applicable to:
– slewing bearings for high radial forces,
– slewing bearings rotating at high speed,
– slewing bearings having to meet stringent precision requirements.
In such cases UWE bearing will carry out the calculations based on the load spectra including the speed of rotation and the percentage of operating time.We must clearly distinguish between the operating hours of the equipment and the actual rotating or slewing time. The various loads must be taken into account in the form of load spectra and percentages of time. For service life considerations another influential factor not to be neglected is the slewing angle under load and without load.For an approximate determination of the service live of a slewing bearing, service life curves are shown next to the static limiting load diagrams.This does not apply to profile bearings types 13 and 21.These service life curves are based on 30,000 revolutions under full load. They can also be employed to determine the service life with different load spectra or to select a bearing with a specified service life.

introduction of UWE slewing ring

UWE is the leading manufacturer of slewing bearings (including ball and roller slewing rings) and of seamless-rolled steel and non-ferrous metal rings. UWE slewing bearings are in a wide variety of applications.UWE manufactures slewing bearings up to 5,000 mm diameter as mono-bloc systems and segmental bearings in larger dimensions.Total commitment to quality is common to both, our domestic and foreign production facilities.All service and areas from applications consulting to design and manufacturing,including comprehensive customer service, are based on the international DIN/ISO 9001/2000 quality standard series.

Examples for applications:
• Antennas and Radar
• Equipment
• Areal Hydraulic Platforms
• Aviation and Aerospace Units
• Bogie Bearings for Vehicles
• Communication Systems
• Excavators
• Harbour and Shipyard Cranes
• Machine Tools
• Mechanical Engineering
• Mobile Cranes
• Offshore Technology
• Packaging and Filling Machines
• Rail Vehicles
• Ship Deck Cranes
• Stackers and Reclaimers
• Steel mill Equipment
• Telescopes
• Tower Cranes
• Tunneling Machines
• Water Treatment Equipment
• Wind and Solar Energy Plants