Custom slewing bearings according to drawing or old part
ATH Technik supplies custom-made slewing bearings and slewing rings when standard dimensions do not fit or a required spare part is no longer available. Manufacturing can be based on your technical drawing or after a complete measurement of an existing slewing bearing.
If no suitable standard slewing bearing is available
For older machines, custom designs, or manufacturer-specific installation dimensions, a suitable slewing ring is often not available as a standard component. Missing drawings or discontinued series also do not have to prevent replacement procurement.
In these cases, ATH Technik develops a suitable solution based on existing documentation or by completely measuring the sent-in old part. This involves taking into account dimensions, mounting holes, teeth, installation situation, and technical requirements, among other things.
For regularly available versions, please see our Standard slewing bearings.You can also find suitable versions for construction machinery under Slewing rings.
Slewing ring according to drawing or existing sample
Depending on the available documentation, the custom slewing bearing can be manufactured directly according to the drawing or completely reconstructed from an existing slewing ring.
Manufacturing according to technical drawing
If a technical drawing is already available, we will review the specifications and, based on this, prepare a quotation for customized manufacturing.
- Review of existing drawing and dimensions
- Consideration of the drilling pattern and installation situation
- Version with internal, external or without toothing
- Coordination of play, tolerances, and surface protection
- Manufacturing according to the agreed technical basis
Reproduction based on an old part
In most cases, the existing slewing bearing is sufficient as a basis for remanufacturing. Even without a type plate, manufacturer information, or technical drawing, we can record almost all relevant dimensions and design features.
- Measurement of virtually all slewing bearings and slewing rings
- No existing drawing required
- Nameplate and manufacturer information are not strictly necessary
- Acquisition of geometry, hole pattern and overall height
- Measurement of existing internal or external gears
- Creation of a technical manufacturing drawing
- Reproduction based on the measured old part
From the existing slewing ring to the new slewing bearing
The exact procedure depends on whether a technical drawing is available or if the new slewing bearing is being completely reconstructed based on an existing used part.
Inquiry and preliminary review
You send us existing drawings, photos, dimensions, or information about the existing component.
Technical evaluation
We review the available data and coordinate the submission or production with you.
Surveying and drawing
The used part is completely measured and a technical production drawing is created from it.
Technical coordination
The critical dimensions and design features are checked and coordinated.
Manufacturing and delivery
Subsequently, the custom slewing bearing is manufactured and delivered to you.
Technical characteristics according to your installation situation
Dimensions and design features can be adapted to the existing machine or new design. The technical feasibility is checked individually for each inquiry.
Dimensions and overall height
Outside and inside diameters, overall height, and connection dimensions are determined to match the existing installation space.
mounting holes
Bolt circles, hole diameters, threads, and countersinks can be made to match the existing connection design.
gearing
The slewing ring can be designed without gear teeth, with external teeth, or with internal teeth, and can be adapted to the existing pinion.
Bearing play and accuracy
Requirements regarding bearing clearance, radial runout, axial runout, and motion accuracy are taken into account depending on the application.
Sealing and lubrication
Sealing and lubrication concepts are selected according to the operating and environmental conditions.
Surface protection
For demanding environments, suitable coatings and anti-corrosion measures can be considered.
What information do we need?
For an initial assessment, it is not necessary to have all the data complete yet. Even if no technical documentation is available at all, the existing component can, in most cases, be fully measured.
For manufacturing according to drawings
Please send us any technical documentation you have, if possible.
- Technical drawing or dimensioned sketch
- CAD data, if available
- Desired quantity
- Material and Surface Requirements
- Tolerances and bearing clearance requirements
- Loads and Operating Conditions
When manufacturing a replacement part based on an existing part
Virtually all rotary joints and swivel rings can be measured based on the existing component and reproduced. The absence of drawings, nameplates, or manufacturer information is usually not a reason to rule out this option. .
- The existing component serves as a technical template
- Photos and approximate dimensions make it easier to make an initial assessment
- Nameplate or markings, if any
- Geometry and mounting holes are measured completely
- Existing interconnections are documented from a technical perspective
- Wear and tear as well as damage are taken into account
- The submission of the component is coordinated with ATH Technik
Measure and reproduce all excavator slewing rings
ATH Technik can measure and remanufacture all excavator slew rings. This applies regardless of the manufacturer, machine type, year of manufacture, or original supplier.
Even if there is no technical drawing, nameplate, or manufacturer information left, the removed slewing ring can be used as a template. We measure the existing geometry, bolt pattern, overall height, and gearing, use this to create a technical manufacturing drawing, and put the suitable replacement into production.
- Slew rings for excavators and mini excavators of all manufacturers
- Replacement parts available even without a part number or nameplate
- Measurement of internal and external gears
- Consideration of existing connection dimensions and hole patterns
- Replacements for discontinued or unknown model series
Wear and tear is taken into account during the survey
Even worn or damaged slewing rings can generally be measured and reconstructed. Existing wear, deformations, and damage are taken into account during the evaluation. Information about the machine, load, and application is helpful if still available, but is not a mandatory requirement for an initial technical assessment.
Wann ist eine kundenspezifische Drehverbindung sinnvoll?
Sonderanfertigungen und Nachfertigungen kommen insbesondere dann infrage, wenn Standardprodukte konstruktiv nicht passen oder vorhandene Komponenten nicht mehr beschafft werden können.
Fragen zur Nachfertigung von Drehverbindungen
Kann eine Drehverbindung ohne vorhandene Zeichnung nachgefertigt werden?
Ja. In den meisten Fällen reicht das vorhandene Altteil als Grundlage vollständig aus. Eine technische Zeichnung, ein Typenschild oder Herstellerinformationen sind nicht zwingend erforderlich. ATH Technik vermisst die Geometrie, Befestigungsbohrungen, Bauhöhe und Verzahnung und erstellt daraus die benötigte Fertigungszeichnung.
Können auch unbekannte Bagger-Drehkränze nachgefertigt werden?
Ja. ATH Technik kann alle Bagger-Drehkränze vermessen und nachfertigen. Das ist auch möglich, wenn keine Ersatzteilnummer, kein Typenschild, keine technische Zeichnung und keine Herstellerinformationen vorhanden sind. Der ausgebaute Drehkranz dient in diesem Fall als Vorlage für Vermessung, Zeichnungserstellung und Fertigung.
Muss der alte Drehkranz sofort eingeschickt werden?
Nein. Für die erste Einschätzung können zunächst Fotos und ungefähre Abmessungen übermittelt werden. Anschließend stimmen wir die Einsendung des Altteils direkt mit Ihnen ab.
Kann auch ein verschlissener oder beschädigter Drehkranz vermessen werden?
Ja. Auch verschlissene oder beschädigte Drehkränze können in der Regel vermessen und rekonstruiert werden. Verschleiß, Beschädigungen und mögliche Verformungen werden bei der Erstellung der Fertigungsgrundlage berücksichtigt.
Welche Verzahnungsarten sind möglich?
Kundenspezifische Drehverbindungen können je nach technischer Machbarkeit unverzahnt, außenverzahnt oder innenverzahnt ausgeführt werden. Bei einer Nachfertigung wird die Verzahnung vermessen und auf das vorhandene Antriebskonzept abgestimmt.
Kann die neue Drehverbindung gegenüber dem Altteil angepasst werden?
Änderungen an Bohrbild, Verzahnung, Dichtung, Lagerspiel oder Oberflächenschutz können im Rahmen der technischen Prüfung berücksichtigt werden. Die endgültige Ausführung wird vor der Fertigung abgestimmt.
Drehverbindung oder Bagger-Drehkranz nachfertigen
Senden Sie uns Ihre Zeichnung oder zunächst einige Fotos des vorhandenen Drehkranzes. Auch ohne Typenschild, Ersatzteilnummer oder technische Unterlagen können wir das Altteil vermessen, eine Fertigungszeichnung erstellen und den passenden Ersatz anfertigen.