Mining and tunneling machinery, Rock Tools, Ground Support as well as contract manufacturing of precision components at the Zeltweg (AT) site.
Sandvik Mining and Construction
Zeltweg, AustriaNew on Amplifa
About Sandvik Mining
Sandvik Mining is a business area of the Swedish technology group Sandvik and supplies machinery, drilling tools, ground support products, spare parts, services and digital solutions for mining, tunneling and construction. The portfolio includes underground and surface drilling rigs, loaders, haul trucks, mechanical cutting machines, rock bolt installation units, hollow core bolts as well as rebuild, repair and rock tools services. At the Austrian site in Zeltweg there is a competence center for engineering and production of mining and tunneling machinery for cutting rock excavation with more than 175 years of history. The contract manufacturing there offers the complete process chain for demanding precision components: CNC turning and 5-axis milling, gear technology (spur, bevel and spiral bevel gears up to module 28), in-house heat treatment (case hardening, quenching and tempering, nitriding, stress-relief annealing), precision grinding, certified welding to ISO 3834-2 and final assembly – from design consulting through rough machining to the finished component. In terms of materials, steel dominates, including ductile steels for hollow core bolts, as well as cemented carbide with its own recycling program in Austria. Customers come from mining, tunneling, geotechnics, the quarrying industry, mechanical engineering, drive technology and the energy sector; in 2025 the group was active with around 42,000 employees in approximately 150 countries.
- Site
- Zeltweg, Austria
- Processes
- Turning, Milling, Gear cutting, Case hardening; quenching and tempering; nitriding; stress-relief annealing, Grinding, Welding, Assembly, Hardening
- Materials
- Ductile steel, Steel, Cemented carbide, Mineral Bolt Resin
- Certificates
- ISO 9001, ISO 14001, ISO 45001, ISO 3834-2, ATEX, IECEx, ISO 3834-2 (welding)
- Employees
- approx. 18,000
- Industries
- Mining (underground and open-pit), Tunneling, Construction/Infrastructure, Geotechnics, Quarrying industry, Mechanical engineering (contract manufacturing)
- 01
Design consulting / Engineering
- 02
Raw material
- 03
CNC turning
- 04
5-axis milling
- 05
Gear cutting
- 06
Heat treatment (case hardening, quenching and tempering, nitriding,
- 07
Precision grinding
- 08
Welding to ISO 3834-2
- 09
Final assembly
Materials & Processes
Steel
Gear components, shafts, load-bearing structures and self-drilling hollow bar systems with yield strengths of 220–630 kN.
Ductile steel
For DSI ductile hollow core bolts with high deformability in squeezing and jointed rock.
Cemented carbide
Drilling tools; worn tools are recycled in Austria and returned to new production.
Mineral Bolt Resin
Injection resin for anchoring hollow core bolts in weak and brittle ground.
Site
Zeltweg
ATCompetence center for engineering and production of mining and tunneling machinery for cutting rock excavation;
- Materials
- Steel, ductile steel, cemented carbide
- CNC lathes (also large parts)
- 5-axis machining centers
- Gear-cutting machines (external/internal gearing)
- Heat treatment systems (case hardening, quenching and tempering, nitriding, stress-relief annealing)
- Precision grinding machines
- Welding technology to ISO 3834-2
- Assembly
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Turning | – | – | – | – | – |
| Milling | – | – | – | – | – |
| Gear cutting | – | – | – | – | – |
| Case hardening; quenching and tempering; nitriding; stress-relief annealing | – | – | – | – | – |
| Grinding | – | – | – | – | – |
| Welding | – | – | – | – | – |
| Assembly | – | – | – | – | – |
| Hardening | – | – | – | – | – |
Additional services
Reference customers
Quality & Certifications
Contract manufacturing in Zeltweg is certified to ISO 9001, ISO 14001, ISO 45001, ISO 3834-2, ATEX and IECEx. In-house precision grinding and heat treatment enable reproducible, documented quality with tightest tolerances.
| Evidence | Zeltweg |
|---|---|
| ISO 9001 | |
| ISO 14001 | |
| ISO 45001 | |
| ISO 3834-2 (welding) | |
| ATEX | |
| IECEx |
History
Foundation of the predecessor site Zeltweg; the competence center looks back on a history of more than 175 years.
- 2025
Launch of the Tundo™ RH700 cluster hammer unit; group figures 2025: approx. 42,000 employees, approx. 121 bn SEK revenue; Business Area Mining approx. 69 bn SEK and approx. 18,000 employees.
- 2026
New Reconciliation Action Plan in Australia after a 10-year process; merger of the Sandvik companies in Poland announced; delivery of a 27-unit underground fleet to Orken (Kazakhstan).