Repair, manufacture and installation of slewing rings and slewing connections for crane and machine construction
Drehkranzservice Maschinenbau Inhaber Josef Schwarz
Gewerbestraße 13, 86946 Vilgertshofen-Stadl · GermanyNew on Amplifa
About Drehkranzservice
Drehkranzservice Maschinenbau Inhaber Josef Schwarz is a master-craftsman business in Vilgertshofen-Stadl (district of Landsberg am Lech, Bavaria) that has specialised in slewing rings and slewing connections for over 35 years. The company was founded by Ottmar Hirner and has been run by Josef Schwarz as owner and managing director since 2019. The range of services includes the repair and replacement of slewing rings including on-site inspection at the construction site as well as in the company's own workshop, the professional installation and removal of slewing connections on tower cranes and excavators, special machine construction, and the sale of single- and multi-row ball and roller slewing rings from in-house production or from long-standing suppliers. In addition, custom-made products such as milled and turned parts are manufactured, CAD drawings are created and slewing rings are produced individually to customer specifications. The company is also the point of contact for insurance companies and experts in the event of slewing ring damage. Slewing rings and spare parts are shipped worldwide; many slewing rings, especially in the construction sector, are available from stock.
- Site
- Vilgertshofen-Stadl
- Processes
- Slewing ring repair/replacement, Installation and removal of slewing connections (assembly), Special machine construction, Manufacture of slewing connections/slewing rings, CAD drawing creation, Expert/insurance assessment of slewing ring damage, Sale and consultation (single-/multi-row ball or roller slewing rings), Custom manufacture of milled parts
- Materials
- Slewing rings (structural steel/rolled steel, not further specified), Steel (rolled steel/structural steel), CAD design, On-site assembly, Machining (milled and turned parts)
- Certificates
- 12-month guarantee
- Industries
- Crane construction, Construction machinery, Mechanical engineering, Insurances/experts, Tower crane/crane construction
- 01
Consultation and inspection (on site or in the workshop)
- 02
Preparation/quotation (including CAD drawing for new production)
- 03
Repair or new manufacture of the slewing ring in the company's own workshop
- 04
Installation and removal/assembly of the slewing connection
- 05
worldwide shipping or delivery
Materials & Processes
Steel (rolled steel/structural steel)
Base material of the repaired, traded and in-house manufactured slewing rings and slewing connections.
CAD design
Creation of CAD drawings as the basis for individual slewing ring production to customer specification.
On-site assembly
Professional installation and removal of slewing connections on tower cranes at the construction site or in the workshop.
Machining (milled and turned parts)
Custom manufacture of milled and turned parts for machine construction on request.
Locations
Vilgertshofen-Stadl
DEWorkshop, repair, manufacturing and administration
- Materials
- Steel (slewing rings)
Slewing Rings & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Slewing ring repair/replacementAssembly | – | – | – | – | Steel (slewing rings) |
| Installation and removal of slewing connections (assembly)Assembly | – | – | – | – | – |
| Special machine constructionAssembly | – | – | – | – | – |
| Manufacture of slewing connections/slewing ringsJoining | – | – | – | – | – |
| CAD drawing creationEngineering | – | – | – | – | – |
| Expert/insurance assessment of slewing ring damageTesting | – | – | – | – | – |
| Sale and consultation (single-/multi-row ball or roller slewing rings)Engineering | – | – | – | – | – |
| Custom manufacture of milled partsMachining | – | – | – | – | – |
| Custom manufacture of turned partsMachining | – | – | – | – | – |
| Time-based repair of older construction machineryAssembly | – | – | – | – | – |
Additional services
Quality & Guarantee
As a master-craftsman business, the company places great value on quality and service; a 12-month guarantee is granted on repairs and delivered slewing rings.
| Evidence | Vilgertshofen-Stadl |
|---|---|
| 12-month guarantee |
Company History
- ca. 1980er
Foundation of the master-craftsman business by Ottmar Hirner; over 35 years of experience in slewing ring repair and mechanical engineering
- 2019
Josef Schwarz takes over the company as owner and managing director and continues to develop the repair and manufacture of slewing connections