Product category:
Bearings and guideways - rotary and linear
News Release from: Schaeffler (UK) | Subject: Bearings
Edited by the Manufacturingtalk Editorial
Team on 12 December 2007
Bearings are maintenance-free
Plain bearings are designed to meet the highest performance requirements in automotive and industrial applications and offer low wear sliding characteristics and high load carrying capacities.
This year, the Schaeffler Group is celebrating the 25th Anniversary of its range of plain bearings, designed to meet the highest performance requirements in automotive and industrial applications Permaglide plain bearings offer low wear sliding characteristics, high load carrying capacities and heat dissipation properties that are normally associated with metals
This article was originally published on Manufacturingtalk on 17 Jun 2008 at 8.00am (UK)
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Split roller bearings cut production downtime
Using split cylindrical or spherical roller bearings on heavy duty machinery, such as rolling stands and extrusion machines, can reduce repair and overhaul costs on complex drive units.
The bearings are maintenance-free and so are ideal for special automotive and general industrial applications.
Permaglide bearings have a porous bronze-sintered structure, applied to a steel or bronze backing, impregnated with the appropriate polymer-mix.
This solid lubricant produces a film between the sliding surfaces, which provides low-noise operation at constant speeds and low coefficients of friction throughout the entire service life of the bearing.
Further reading
Catalogue describes shaft guidance systems
A free, 175-page reference guide to a range of shaft guidance systems includes linear bearings, housed units, shaft support blocks and rail guidance units.
Condition monitoring system prevents downtime
An online system monitors the condition of over 200 separate measuring points including rolling bearings, gear sets, shafts and imbalanced rotors in fans and pumps, keeping plant availability at 90%.
The bearings are a low cost alternative for applications with comparatively low surface loads and where space is restricted.
The bearings are available in the form of bushes, flanged bushes, thrust washers and strips.
Custom-designed versions are also possible, including blanked parts; ball cups; bearing shells; bushes with windows and holes; and bushes with stamped oil grooves.
Bush outside diameters are possible from 3mm up to 305mm (in special cases up to 800mm); strip widths up to 250mm; and wall thicknesses from 0.5mm up to 3.06mm.
Permaglide linear plain bearings (PAB) consist of Permaglide bushes pressed into an outer ring.
The 'PABO' design has a segment cut out of the bearing for use with supported shafts.
Alternatively, Permaglide linear plain bearing units PAGH and PAGBA consist of a Permaglide linear plain bearing (PAB or PABO) pressed into a housing.
For the automotive industry, Schaeffler now offers lead-free Permaglide bearings.
Article 4 of the 'End of Life Vehicle Directive' stipulates that from July 2008, manufacturers of new vehicles will no longer be permitted to use certain materials (including lead) in car components.
For this reason, Schaeffler offers a lead-free Permaglide P14 and P141 (with zinc-sulphide) bearings.
P14 is designed for dry-running applications, but can also be used in mixed-friction and hydrodynamic applications.
These plain bearings have a running-in layer made from PTFE and zinc sulphide, plus a sliding layer comprising a porous bronze layer filled with PTFE, on a steel backing with a very thin protective layer of tin.
P141 is similar in structure to P14 but is intended for oil-lubricated applications, although the bearings can also be used dry.
The running-in layer this time consists of PTFE and zinc sulphide with special wear-inhibiting additives.
For a free Permaglide catalogue, or for more information on Schaeffler's complete range of Permaglide plain bearings, please visit the website or telephone the marketing department. Request a free brochure from Schaeffler (UK) ...
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