PTO: The Product Types Ontology for Semantic Web-based E-Commerce
type: Ontology
comment: The Product Types Ontology: Good identifiers for product types based on Wikipedia This service provides GoodRelations-compatible class definitions for any type of product or service that has an entry in the English Wikipedia. Vocabulary: http://www.productontology.org/# Namespace: http://www.productontology.org/ The Product Types Ontology is designed to be used in combination with GoodRelations, a standard vocabulary for the commercial aspects of offers. See http://purl.org/goodrelations/ for more information.
label: The Product Types Ontology for Semantic Web-based E-Commerce
contributor: The class abstracts and translations of labels are taken from Wikipedia, the free encyclopedia.
creator: Martin Hepp
rights: The class definition texts are taken from Wikipedia, the free encyclopedia under a Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license, see http://creativecommons.org/licenses/by-sa/3.0/. Accordingly, all ontology class definitions provided in here are available under the very same license.
subject: E-Commerce, E-Business, GoodRelations, Ontology, Wikipedia, DBPedia
license: http://creativecommons.org/licenses/by-sa/3.0/
imports: v1
version info: 2026-08-28T18:29:19.981334

Thrust bearing
type: Class
subclass of: ProductOrService
subclass of: Product
comment: A thrust bearing is a particular type of rotary bearing. Like other bearings they permanently rotate between parts, but they are designed to support a predominantly axial load. Thrust bearings come in several varieties. *Thrust ball bearings, composed of bearing balls supported in a ring, can be used in low-thrust applications where there is little axial load. *Cylindrical roller thrust bearings consist of small cylindrical rollers arranged flat with their axes pointing to the axis of the bearing. They give very good carrying capacity and are cheap, but tend to wear due to the differences in radial speed and friction, which is higher than with ball bearings. *Tapered roller thrust bearings consist of small tapered rollers arranged so that their axes all converge at a point on the axis of the bearing. The length of the roller and the diameter of the wide and the narrow ends, and the angle of the rollers need to be carefully calculated to provide the correct taper so that each end of the roller rolls smoothly on the bearing face without skidding. These are the type most commonly used in automotive applications (to support the wheels of a motor car for example), where they are used in pairs to accommodate axial thrust in either direction, as well as radial loads. They can support greater thrust loads than the ball type due to the larger contact area, but are more expensive to manufacture. *Spherical roller thrust bearings use asymmetrical rollers of spherical shape, rolling inside a house washer with a raceway with spherical inner shape. They can accommodate combined radial and axial loads and also accommodate misalignment of the shafts. They are often used together with radial spherical roller bearings. Spherical roller thrust bearings offer the highest load rating density of all thrust bearings. *Fluid bearings, where the axial thrust is supported on a thin layer of pressurized liquid—these give low drag. *Magnetic bearings, where the axial thrust is supported on a m…
label: Lager (Maschinenelement) (Axiallager) @de
label: Cojinete de empuje @es
label: Aksiaalilaakeri @fi
label: スラスト軸受 @ja
label: ത്രസ്റ്റ് ബെയറിങ് @ml
label: Aksiallager @nb
label: Axiaallager @nl
label: Aksialni ležaj @sl
describedby: Thrust bearing.rdf
describedby: Thrust bearing.ttl