Repair, assembly and manufacture of slew bearings (slewing rings) as well as custom solutions in mechanical engineering.
Drehkranzservice Maschinenbau – Inhaber Josef Schwarz
86946 Vilgertshofen-StadlNew on Amplifa
About Drehkranzservice
Drehkranzservice Maschinenbau is a master-craftsman business based in Vilgertshofen-Stadl in Upper Bavaria, specialising in slew rings (slewing rings). Founded over 35 years ago by Ottmar Hirner and owned by Josef Schwarz since 2019, the company offers consultation, service and assembly for slew rings from a single source. Its range of services includes the repair and replacement of slew rings – also as emergency repairs on site or in its own workshop – the professional installation and removal of slewing rings on construction cranes and construction machinery, and the manufacture of slew rings to customer specifications including CAD drawings. In addition, the business produces custom solutions such as milled and turned parts, carries out special-purpose machinery projects and serves as a point of contact for experts and insurance companies in the event of slew ring damage. Repaired slewing rings in as-new condition as well as numerous slew rings available from stock round out the offering; shipping is carried out worldwide.
- Site
- Vilgertshofen-Stadl
- Processes
- Repair/replacement of slew rings (slewing rings), Installation and removal of slewing rings (slew ring replacement), Special-purpose machinery construction, Manufacture of slewing rings (slew rings, single-/multi-row ball and roller slew rings), Manufacture of milled parts (custom-made), Manufacture of turned parts (custom-made), Inspection/consultation on slew ring damage (for experts & insurance companies), Creation of CAD drawings for slewing rings
- Materials
- Custom-made milled parts, Custom-made turned parts
- Certificates
- 12-month warranty on slew rings and spare parts
- Industries
- Construction crane/crane construction, Construction machinery, Mechanical engineering
- 01
Consultation and on-site inspection
- 02
Removal of the slewing ring
- 03
Inspection in the company's own workshop
- 04
Repair or new manufacture incl. CAD drawing
- 05
Assembly/installation
- 06
Worldwide shipping and 12-month warranty
Materials & Processes
Custom-made milled parts
Individually manufactured milled parts for mechanical engineering on request.
Custom-made turned parts
Individually manufactured turned parts for mechanical engineering on request.
Locations
Vilgertshofen-Stadl
DEWorkshop and business premises
- Lot size
- Single-piece manufacture, repairs
- Materials
- Steel (slewing rings, milled and turned parts)
- Machinery for the repair and new manufacture of slew rings
Components & Services
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Repair/replacement of slew rings (slewing rings)Assembly | – | – | – | – | – |
| Installation and removal of slewing rings (slew ring replacement)Assembly | – | – | – | – | – |
| Special-purpose machinery constructionEngineering | – | – | – | – | – |
| Manufacture of slewing rings (slew rings, single-/multi-row ball and roller slew rings)Joining | – | – | – | – | – |
| Manufacture of milled parts (custom-made)Machining | – | – | – | – | – |
| Manufacture of turned parts (custom-made)Machining | – | – | – | – | – |
| Inspection/consultation on slew ring damage (for experts & insurance companies)Testing | – | – | – | – | – |
| Creation of CAD drawings for slewing ringsEngineering | – | – | – | – | – |
Additional services
Quality & Warranty
As a master-craftsman business, the company provides a 12-month warranty on all slew rings and spare parts, regardless of whether original or replacement parts are installed. Repaired slewing rings leave the workshop in as-new condition.
| Evidence | Vilgertshofen-Stadl |
|---|---|
| 12-month warranty on slew rings and spare parts |
History
Founded by Ottmar Hirner; over 35 years of experience in the field of slew rings and mechanical engineering
- 2019
Josef Schwarz takes over the company as owner and managing director and further develops the repair and manufacture of slewing rings