Manufacturer of high-precision diamond and CBN tools for the metalworking industry.
STROH Diamantwerkzeuge GmbH
Bruchköbel · Hünfeld · Indaiatuba (Brazil)New on Amplifa
About STROH Diamantwerkzeuge
STROH Diamantwerkzeuge GmbH is a third-generation mid-sized family company headquartered in Bruchköbel near Hanau with a manufacturing plant in Hünfeld near Fulda. The company develops and manufactures diamond and CBN tools, including single-point dressing diamonds, multi-grain and profile dressers, dressing plates, high-precision diamond dressing rolls and CNC-profiled form rolls, hardness testing diamonds, diamond and CBN turning tools, as well as galvanic grinding bodies and grinding wheels. Profile machining is carried out on state-of-the-art CNC machines with online CAD/CAM integration; all precision-critical work steps are performed in climate-controlled rooms. The materials used include natural diamond, synthetic diamond, PCD and CBN. Its main user industries are the automotive, gear, bearing, electrical, hydraulic and tool industries. The dressing rolls achieve profile dimensions with tolerances down to ±0.001 mm. With a foreign subsidiary in Indaiatuba (Brazil) and worldwide distribution channels, the company also supplies international markets. The quality management system has been certified to DIN EN ISO 9001 since 1996.
- Site
- Bruchköbel
- Processes
- Manufacture of diamond and CBN tools (design and manufacture, certified to DIN EN, Single dressing diamonds / single-grain dressers (incl. single-use dressing diamonds), Diamond dressing rolls (galvanically negative bonded GN, GNS, infiltrated IS, IG), Diamond form rolls (CNC-profiled form rolls, standard range types 800 10–800 16), Dressing plates (grain dressing plates, universal dressing tool for straight dressing and profiling), Multi-grain dressers / profile dressers / dressing wheels / hand dressers, Hardness testing diamonds, hardness reference plates, probe diamonds (Gage Points), Diamond and CBN turning tools
- Materials
- Natural diamond, Synthetic diamond, CBN (cubic boron nitride), PCD (polycrystalline diamond)
- Certificates
- DIN EN ISO 9001:2015, ISO 9001:2015 (TÜV SÜD)
- Industries
- Automotive industry, Gear manufacturing, Bearing industry, Electrical industry, Hydraulics, Tool industry
- 01
Consulting and application technology
- 02
Design
- 03
Material selection (diamond/CBN)
- 04
CNC profile machining
- 05
Galvanic bonding/infiltration
- 06
Measurement and quality inspection
- 07
Worldwide shipping
- 08
Regrinding service
Materials and Processes
Natural diamond
For single-grain dressing diamonds and dressing plates with natural tips, in carat classes 0.10 to 2.5.
Synthetic diamond
Synthetic diamond rods for consistent dressing conditions without natural quality fluctuations.
PCD (polycrystalline diamond)
Used in PCD turning tools and tools for abrasive materials.
CBN (cubic boron nitride)
For turning tools and grinding wheels when machining hardened steels and carbide.
Sites
Bruchköbel
DEHeadquarters: sales, application technology, administration and manufacturing
- Materials
- Diamond, CBN
- CNC machines for profile machining with online CAD/CAM integration
Hünfeld
DEBranch plant/manufacturing facility
- Materials
- Diamond, CBN
- CNC machines for profile machining
Indaiatuba
BRForeign subsidiary Stroh do Brasil Ltda., production site
- Materials
- Diamond, CBN
Tools and Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of diamond and CBN tools (design and manufacture, certified to DIN ENEngineering | – | – | – | – | Diamond, CBN |
| Single dressing diamonds / single-grain dressers (incl. single-use dressing diamonds)Surface | – | – | 0.10 carat – 2.5 carat | – | Natural diamond, synthetic diamond rods |
| Diamond dressing rolls (galvanically negative bonded GN, GNS, infiltrated IS, IG)Surface | Profile dimensions ± 0.001 mm (GN), ± 0.002 mm (IG/IS); | – | – | – | Diamond |
| Diamond form rolls (CNC-profiled form rolls, standard range types 800 10–800 16)Surface | D1 max. 300 mm (types 800 10–800 14), D1 max. 200 mm (types | 300 mm (D1 max.) | – | small quantities with high | Diamond |
| Dressing plates (grain dressing plates, universal dressing tool for straight dressing and profiling)Surface | – | – | – | – | Diamond |
| Multi-grain dressers / profile dressers / dressing wheels / hand dressersSurface | – | – | – | – | Diamond |
| Hardness testing diamonds, hardness reference plates, probe diamonds (Gage Points)Testing | – | – | – | – | Diamond |
| Diamond and CBN turning toolsMachining | – | – | – | – | Diamond, CBN |
| Diamond and CBN grinding wheels / galvanic grinding bodiesSurface | – | – | – | – | Diamond, CBN |
| PCD and CBN toolsMachining | – | – | – | – | PCD, CBN |
| Diamond lapping and polishing pastes, hand lapsSurface | – | – | – | – | Diamond |
| Diamond hand and machine files, diamond hand lapsSurface | – | – | – | – | Diamond |
| Chisel diamonds, contour diamonds Diaform, Reishauer contour diamonds, turning diamonds,Surface | – | – | – | – | Diamond |
| Profile machining on state-of-the-art CNC machines with CAD/CAM integration, climate-controlledMachining | Profile dimensions ± 0.001 to ± 0.002 mm (dressing rolls) | – | – | – | Diamond, CBN |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC machines for profile machining (with online CAD/CAM integration) | – | – | – | – | Bruchköbel / Hünfeld |
Additional services
Quality
Since 1996, STROH has operated a quality management system according to DIN EN ISO 9001 (currently 9001:2015, TÜV SÜD, scope: design and manufacture of diamond and CBN tools). All precision-critical work steps are carried out in climate-controlled rooms; state-of-the-art metrology and a central quality database record the relevant values of every production step.
| Evidence | Bruchköbel | Hünfeld |
|---|---|---|
| ISO 9001:2015 (TÜV SÜD) |
History
- 1965
Discontinuation of the jewelry diamond grinding workshop and transition to industrial diamond machining; origins in the Rhine-Main region
- 1996
Introduction of a quality management system according to DIN EN ISO 9001
Mid-sized family company in its 3rd generation with over 50 years of tradition; world market leadership for individual products according to its own statement