This in one option. "Anlaufen" is an alternative for "anstreifen" in some references.

(fits the context)
bearing play leads to forcible contact of the turbine wheel of the compressor with the housing.

Another suggestion

Explanation:
I think, the source word should read Auflaufen & not anlaufen.

With Auflaufen the corrected Source sentence would be =>

Stark erhöhtes Lagerspiel führt zum „Anlaufen“ des Verdichter-/Turbinenrads am jeweiligen Gehäuse. Hoher Verschleiß der Lagerbauteile durch verunreinigtes Schmieröl.

Which would then mean =>

Highly increased bearing play leads to running aground of the compressor- turbine wheel on the respective housing.
Higher wear of the bearing components by contaminated lubricating oil.

(Because, due to bearing play, the wheel would scrap on the housing, and by wear thereof, tiny metal particles formed by scraping will mix in lubricating oil and contaminate it. Thus higher wear of the bearing component.

I hope this makes more sense.

This would make the text coherent.



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Note added at 17 hrs (2011-06-09 12:26:41 GMT)
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In the corrected sentence Anlaufen should rather read as: Auflaufen.

Sorry.

8. Improper operation and maintenance by the crew. Improper maintenance and operation by the crew can lead to damage to the turbocharger. The following is a list of some of the types of causes and events that can lead to more serious damages.
– Dirt on compressor and turbine blades – Improperly implemented or neglected washing routines can let dirt accumulate on both compressor and turbine blades. This will lead to imbalances in the rotor, and consequentially it can cause bearing damages and even total break down.
– Improper lubricating oil – The use of lubricating oils not recommended by the manufacturer or contaminated oil, can lead to reduced performance and eventual damage to the bearings.
http://www.gard.no/ikbViewer/page/preventing-losses/area/art...

Fine Particle Contamination may not be noticed in oil visually, but causes polishing of the bearing surface and tell tale rounding of the outer edges. Often the compressor end bearing may be worn to a taper on the outside diameter.
Large Particle Contamination
Oil borne large particles, may cause impact damage and deep scoring as shown left. The bearing bore may also be scored, usually to a lesser extent. The shaft and center housing are usually damaged slightly less, being harder materials. The light scoring shown below was caused by large oil borne contaminations.
Marginal Lubrication
when the oil supply to the turbo is reduced, (for instance when gasket materials partially block an oil way or inlet flange). Characterised by extreme discolouring of shaft journals (as shown).
http://www.hadmac.com/torbo_charge.htm

OIL CONTAMINATION

It is a result of using poor quality oils and filters and also performing engine oil changes too rarely.

It constitutes a significant hazard to movable parts of a turbocharger, resulting in surface wear in bearings. High levels of contamination lead to indentations and internal bearing clearance, resulting in damage of a shaft and housing.
http://www.turbo-tec.eu/en/turbosprezarki_przyczyny_awarii.p...

At present there are many engine oil filters which are in poor quality in the market. Damage of filter paper during usage allows oil without filtering enters the turbocharger directly. Thisleads to the serious abrasion of the turbocharger in a short time and the whole machine may be scrapped.
http://www.hobest.com/English/improve turbocharger.htm

Lubrication Related Problems:
Insufficient Lubrication
Lack of proper lubrication can ruin a turbocharger within mere seconds of operation. With shaft rotation speeds approaching 200,000 rpm in some models, all bearings must receive a supply of oil that can stabilize, lubricate and cool. When lubrication is slowed, stopped or interrupted for any reason, metal to metal contact first occurs at the journal bearings/shaft journals/bearing bores of the center housing. Without the oil, friction will generate enough heat to turn the shaft and/or thrust collar blue (This bluing is often not as evident in units with liquid-cooled center housings.) The thrust bearing, thrust collar and/or backplate mating surface will also show signs of damage. Once the bearings are damaged, "shaft motion" increases. Instead of rotating in a perfect circular motion, the shaft begins to orbit. As bearing clearances are enlarged, shaft motion becomes more intense, and damage accumulates. The center housing seal bores, shaft hubs, and thrust components (thrust collar, thrust spacer, and backplate assembly/thrust bearing, as applicable) are damaged next. This additional damage, in turn, allows for more violent shaft motion. After shaft motion reaches a certain point, the turbine and compressor wheels will contact their respective housings damaging the blades and possibly backing off the shaft nut. When blades are damaged by housing rub, the precise balance of the wheel/rotating assembly is destroyed, leading to even more shaft motion. The shaft may eventually break from a combination of motion stress, fatigue and destabilization (due to the original problem, insufficient lubrication).
http://www.suprasport.com/Major-Causes-of-turbo-damage_ep_47...

Any sign of scraping on either the turbo blades or the housing means the bearings are shot and the turbocharger needs to be replaced or rebuilt.
http://www.turborepair.com/

Inspect the turbine housing (5) profile for damage
caused by possible contact with the rotor.
:
Inspect journal bearing bores for wear and score marks.
Replace bearing housing (4) if a bore diameter exceeds
a maximum of 22.27 mm (0.877 in) or when bore
scratching is severe.
http://www.dieselusa.com/productinfo/HX60_HT60.pdf