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We have a solution for
worn
bearing seats!

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  2. Applications
  3. General Manufacturing
  4. Bearing Seats

Repair composites for oversized bearing seats

Oversized bearing seats almost always cause damage to technical components or dimensional failures of items manufactured with this equipment. Repair is only possible by way of complex and expensive bushing, welding or thermal metal spray application in combination with subsequent machining. Bimetallic (galvanic) corrosion occurring between bearing and seat thus may creates new problems?

Synthetic processes represent an alternative in terms of repair time and costs:

Ask us about: oversized bearing seats, worn roller bearing seats, damaged bearing housings, cutlass bearing seats, line-shaft bearing seats, slide bearing seats, undersized bearing pivots, worn bearing blocks, reseat bearing shells

MetaLine Series XL – MetaLine Series XL are "true-to-dimension" curing materials for re-bushing defective bearing seats. Installation may either be done in free dimension with subsequent machining or by means of precision molding without machining. The material characteristics show a residual elasticity which absorbs eccentric alternating stress. The excellent electrical insulation values prevent crevice corrosion and electro-chemical corrosion.

Scope of application:

Oversized bearing seats
Worn roller bearing seats
Damaged bearing housings
Cutlass bearing seats
Line-shat bearing seats
Slide bearing seats
Undersized bearing pivots
Worn bearing blocks
Reseat bearing shells

 

Downloads:

Series XL Presentation
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lagersitzreparatur, Repair composites for oversized bearing seats
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Technical solutions in detail

MetaLine Series XL –

MetaLine Series XL are dimensionally accurate solidifying repair materials for the synthetic “bushing” of defective bearing seats. The residual elastic material properties absorb eccentric alternating stress. The high electrical insulation values prevent fretting corrosion and electro-chemical corrosion. There are 2 different application procedures:

Without mechanical post-processing: The new bearing is insulated with a release agent and inserted into the still soft repair compound. After solidification, it can be removed again, if required. Due to the molding, the actual load bearing area is extremely high and elevated bearing forces can be transferred.

With mechanical post-processing: The repair material is applied to the bearing seat with oversize and machined to dimension conventionally after solidification - only the second best method compared to above!

Regardless of which method is used, a repair material thickness of at least 0.8 mm (32 mils) is required. In addition, the bearing seat must be prepared by widening, roughening and degreasing. No magic trick, but also nothing for two left hands . . .

 

Product details

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Explained in simple terms...

Wir lösen Erosionsprobleme an Ventilatoren / Gebläsen!
Bearing seat repair - the heavy bearing seat of a cold rolling press during substrate preparation for the subsequent coating application. In this case, the entire surface was roughened with ceramic abrasive to an R(z) of approx. 75 my
Bearing seat regeneration - the undersize was filled to + 1 mm (40 mils) with the ceramic MetaLine SXL using a template. Machining was carried out with diamond tools. This process can also be used to carry out alignment repairs
Bearing support reconditioning - here is a picture of the mechanical reworking. Ceramizing the bearing seat is a perfect method for solving fretting corrosion problems. Synthetic mating surfaces can no longer cause corrosion!
Bearing seat undersize - a bearing seat reconditioned with MetaLine SXL during machining. Only the second best solution! Instead of reworking, we recommend liquid molding the bearing seat using the original bearing. The difference is a higher contact area! More load-bearing surface means longer service life . . .
Bearing seat oversize - MetaLine SXL is a freely moldable ceramic repair compound. It hardens within a few hours through polymerization. After solidification, all processing and measuring methods can be used as for metallic structures
Metal filler - this term no longer hits the nail on the head! Metallic components are no longer included due to the threat of bi-metal corrosion, and a modern composite is more than just a decorative filler . . .
Bearing seat repair - washouts in the entire functional area including a rolling bearing seat outside any tolerance. Admittedly, this is not an everyday occurrence for us either! A repair was unavoidable due to the spare parts delivery time of 12 months!
Bearing shell repair - the vertical sealing surfaces and the bearing seat were molded in paste form using a steel plate and a duplicate of the bearing ring. During the processing time of the MetaLine SXL, the fit of the templates was measured and adjusted to the exact dimension
Plain bearing seat repair - after demolding, the remaining surfaces were protected with the brushable repair ceramic MetaLine KXL to stop the severe corrosion attack. And the cost - less than 5% of the new part value!
Bearing sealing - the correct term for this Voith-Schneider marine drive on a car ferry would be a bearing seat seal. The water contamination caused by the leaking oil is very clearly documented in the picture
Cuttlas bearing repair – unfortunately not all repair steps were documented photographically. The most important thing, however, is that the work was carried out in dry dock, but in the installed state. Anything else would have caused enormous costs!
Bearing seat repair - bearing leakage sealed with MetaLine repair ceramic SXL. The material costs were less than 50 EURO. But cost is not everything - it also has to work. MetaLine analyzes very precisely and avoids risks beyond plausible physics!
Oversize bearing seat - a term that brings worry lines to the forehead of every technician. Especially when the diameter is as large as in the picture. Not for the faint-hearted . . .
Bearing seat seal - MetaLine technician Ralf Seidel applying the repair ceramic SXL. The surface was first partially blasted with the MetaLine Gritblasting gun SP1 and degreased with MetaLine 995
Bearing seat machining - of course, the seat had to be turned to size using a mobile machining center. However, MetaLine cannot carry out this type of work. Our focus is clearly on chemical processes in mechanical engineering . . .