โดย admin | ม.ค. 12, 2016 | Engineered products
SKF polymer ball bearings are typically used in applications where resistance to moisture or chemicals is essential and steel bearings cannot be used or only with certain restrictions. In those applications, polymer ball bearings are an excellent solution from both a technical and economic perspective as they are characterized by the following properties:
- corrosion and chemical resistant
- high wear- and fatigue-resistant polymer
- self lubricating (no lubricant required)
- low coefficient of friction
- quiet running
- lightweight
- high specific strength (strength to weight ratio)
- high dimensional stability due to the low tendency to creep
- low lifecycle costs
- electrical insulator
โดย admin | ม.ค. 12, 2016 | Engineered products
SKF sensor bearing units are used to accurately monitor the status of rotating or linear components. These units are:
- compact
- robust and reliable
- simple and ready to mount
โดย admin | ม.ค. 12, 2016 | Roller bearings
Spherical roller bearings have two rows of rollers, a common sphered outer ring raceway and two inner ring raceways inclined at an angle to the bearing axis The centre point of the sphere in the outer ring raceway is at the bearing axis. Therefore, the bearings are self-aligning and insensitive to misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection.
cylindrical and tapered bore
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on an adapter sleeve
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on a withdrawal sleeve
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โดย admin | ม.ค. 12, 2016 | Roller bearings
Tapered roller bearings have tapered inner and outer ring raceways and tapered rollers. They are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.
Single row tapered roller bearings
The SKF standard assortment of single row tapered roller bearings comprises popular sizes of metric single row tapered roller bearings in accordance with ISO 355:2007 and inch bearings in accordance with ANSI/ABMA Standard 19.2-2013.
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Double row tapered roller bearings
Double row tapered roller bearings can carry heavy loads and are stiff. They are suitable for the accommodation of combined (radial and axial) loads and can locate a shaft axially in both directions with a given axial clearance or a given preload. Their main use is in gearboxes, hoisting equipment, rolling mills and machines used in the mining industry, e.g. tunnelling machines.
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Four-row tapered roller bearings
Four-row tapered roller bearings are used successfully worldwide for rolling mill bearing arrangements where rolling speeds are slow to moderate. Because of their design they are able to take up those axial loads which occur in such applications in addition to radial loads and generally no separate thrust bearings are required in such arrangements.
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โดย admin | ม.ค. 12, 2016 | Roller bearings
SKF needle roller bearings are bearings with cylindrical rollers that are small in diameter relative to their length. The ends of the rollers are relieved slightly to modify the line contact between the rollers and raceways.
Needle roller and cage assemblies
SKF needle roller and cage assemblies are ready-to-mount, self-contained bearings. They are an excellent choice for applications that require a very rigid bearing arrangement as well as a high load carrying capacity.
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Drawn cup needle roller bearings
SKF drawn cup needle roller bearings have a deep drawn, thin-walled outer ring. They are characterized by a very low sectional height and high load carrying capacity.
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Needle roller bearings with machined rings
SKF needle roller bearings with machined rings are made of carbon chromium bearing steel. Relative to their low sectional height, they have a high load carrying capacity.
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Alignment needle roller bearings
SKF alignment needle roller bearings have an outer ring with a sphered (convex) outside surface. Two polymer seating rings with a sphered (concave) inside surface are encased in a drawn sheet steel sleeve and fitted over the outer ring.
Universal joint bearings
SKF manufactures these bearings with a cold forged or machined cup needle roller bearings with a closed end for different applications.
Needle roller bearing components
Needle roller bearing inner rings
SKF supplies inner rings for needle roller bearings separately. They are typically combined with needle roller and cage assemblies or drawn cup needle roller bearings in applications where the shaft cannot be hardened and ground.
SKF needle rollers are made of carbon chromium steel. The rollers have a hardness of 58 to 65 HRC and have a precision ground surface. They can be used to design full complement bearing arrangements for slow-speed or oscillating applications.
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Combined needle roller bearings
SKF combined needle roller bearings consist of a radial needle roller bearing combined with a thrust bearing. They can accommodate both radial and axial loads. Combined needle roller bearings provide the means to design locating bearing arrangements where radial space is limited.
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Needle roller thrust bearings
SKF needle roller thrust bearings are fitted with a form-stable cage to reliably retain and guide a large number of needle rollers. The very small diameter deviation of the rollers within one assembly enables these bearings to accommodate heavy axial loads and shock loads.
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Track runner bearings
Track runner bearings are designed to run on all types of tracks and to be used in cam drives, conveyor systems, etc. These bearings have a thick-walled outer ring, which enables them to accommodate high radial loads, while reducing distortion and bending stresses.
