Manufacturing precision-mechanical CNC turned parts and assemblies, from prototype production to large-scale series, in the Northern Black Forest.
Grammel Kutlubulut CNC GmbH
Enzklösterle (DE)New on Amplifa
About us
As a supplier for small and large production runs, Grammel Kutlubulut CNC GmbH manufactures precision-mechanical components and assemblies, from simple turned parts to highly accurate integrated valve assemblies. On 17 CNC-controlled turning and grinding centers, ready-to-install precision parts in a diameter range of 5 to 150 mm are produced; hard turning is possible from Ø 3 to 60 mm. The service portfolio also includes internal and external cylindrical grinding (Ø 6–160 mm), milling work, thermal deburring (TEM) at 2,500–3,500 °C, and hot black oxide coating of steel parts with an oxidation depth of approx. 1 µm. The company manufactures in steel and covers lot sizes from prototype and sample production through small series to large-scale series, including assembly of components, call-off orders, stock keeping and just-in-time deliveries. Customers come from mechanical engineering, automotive, aerospace as well as compressed air and hydraulics technology, including Hawe, Parker and Hydac Fluidtechnik. The company is headquartered in Enzklösterle in the Northern Black Forest and is part of a production network with more than 50 CNC machines in Baden-Württemberg.
- Site
- Enzklösterle
- Processes
- CNC turning (precision turned parts, ready-to-install parts and assemblies), Milling (turn-milling competencies), Hard turning, Grinding (internal and external cylindrical grinding), Thermal deburring (TEM), Black oxide coating (hot black oxide coating in alkaline salt solution), Assembly of components (e.g. integrated valve assemblies), Prototype production and prototyping
- Materials
- Steel, CNC turning, CNC Swiss-type turning, Hard turning, Internal and external cylindrical grinding, Thermal deburring, Hot black oxide coating
- Certificates
- ISO 9001:2015, ISO 9001:2015 (SGS, valid until 25.05.2027), 3D production measuring system, roundness, surface roughness and length
- Founded
- 1954
- Employees
- 15
- Industries
- Mechanical engineering, Automotive, Aerospace technology, Compressed air technology, Hydraulics
- 01
CNC turning / Swiss-type turning
- 02
Milling
- 03
Hard turning
- 04
Grinding (internal and external cylindrical)
- 05
TEM deburring
- 06
Black oxide coating
- 07
Assembly of components
- 08
Quality inspection
Materials & Processes
CNC turning
Ready-to-install precision parts and assemblies in a diameter range of 5 to 150 mm on CNC turning centers with bar feed.
CNC Swiss-type turning
Swiss-type lathes with counter-spindle and loading magazine for bar parts up to Ø 32 mm and turning lengths up to 210 mm.
Hard turning
Hard turning from Ø 3–60 mm with high precision and excellent surface quality for individual parts as well as small and large series.
Internal and external cylindrical grinding
Nine high-precision grinding machines machine all external and internal dimensions from Ø 6–160 mm.
Thermal deburring
At 2,500–3,500 °C, protruding burrs are removed explosively, even in hard-to-reach areas.
Hot black oxide coating
Hot black oxide coating in alkaline salt solution gives steel precision parts a corrosion protection layer with an oxidation depth of approx. 1 µm.
Locations
Enzklösterle
DEHeadquarters / Production
- Part weight / size
- Ø 5–150 mm (turning), turning length up to 230 mm
- Lot size
- Prototype production, prototypes, small to large series
- Materials
- Steel
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC turning (precision turned parts, ready-to-install parts and assemblies)Machining | – | 230 mm (max turning length) × Ø 150 mm | – | Prototype/sample production – Large-scale series | – |
| Milling (turn-milling competencies)Machining | – | – | – | Prototype/sample production – Large-scale series | – |
| Hard turningMachining | excellent surface quality | 100 mm × Ø 60 mm | – | Individual parts – Large-scale series | – |
| Grinding (internal and external cylindrical grinding)Machining | – | 250 mm × Ø 160 mm | – | – | – |
| Thermal deburring (TEM)Surface treatment | – | – | – | – | – |
| Black oxide coating (hot black oxide coating in alkaline salt solution)Surface treatment | – | – | – | – | Steel |
| Assembly of components (e.g. integrated valve assemblies)Assembly | – | – | – | Prototype production – Large-scale series | – |
| Prototype production and prototypingEngineering | – | – | – | 1 piece | – |
| Quality inspection (3D measuring system, roundness, surface roughness and length measurement)Testing | – | – | – | – | – |
28 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC lathe with bar feed | Doosan Puma TT1800SY | 1 | Chucked parts Ø 210 mm, bar parts Ø 65 mm, turning length 230 mm | – | Enzklösterle |
| CNC lathe with bar feed | Doosan Puma 2100 SY | 1 | Chucked parts Ø 210 mm, bar parts Ø 65 mm, turning length 200 mm | – | Enzklösterle |
| CNC lathe with bar feed | Doosan Lynx 220 LMSA | 1 | Chucked parts Ø 120 mm, bar parts Ø 51 mm, turning length 200 mm | – | Enzklösterle |
| CNC Swiss-type lathe with counter-spindle and loading magazine | Nexturn SA 32e | 1 | Bar parts Ø 32 mm, turning length 210 mm | – | Enzklösterle |
| CNC Swiss-type lathe with counter-spindle and loading magazine | Star SA 16 R | 1 | Bar parts Ø 15 mm, turning length 100 mm | – | Enzklösterle |
| CNC Swiss-type lathe with counter-spindle and loading magazine | Star SA 12 | 1 | Bar parts Ø 15 mm, turning length 100 mm | – | Enzklösterle |
| CNC internal grinding machine (3 spindles) | Studer S145 | 1 | Bore Ø 6–110 mm, workpiece length max. 200 mm | – | Enzklösterle |
| CNC internal grinding machine (2 spindles) | Studer CT450L | 1 | Bore Ø 6–80 mm, workpiece length max. 150 mm | – | Enzklösterle |
| CNC internal grinding machine (2 spindles) | Okamoto IGM-15 NCIII-2 | 1 | Bore Ø 6–100 mm, workpiece length max. 150 mm | – | Enzklösterle |
| CNC internal grinding machine | Gaub IR 25-25 | 1 | Bore Ø 6–110 mm, workpiece length max. 160 mm | – | Enzklösterle |
| CNC external grinding machine | Studer S 25 | 1 | Grinding size Ø 5–75 mm, workpiece length max. 150 mm | – | Enzklösterle |
| External grinding machine | Studer S 20 | 1 | Grinding size Ø 5–100 mm, workpiece length max. 250 mm | – | Enzklösterle |
| External grinding machine | Ziersch und Baltrusch | 1 | Grinding size Ø 5–90 mm, workpiece length max. 250 mm | – | Enzklösterle |
| Centerless external grinding machine | Seny R-60-H | 1 | Grinding size Ø 6–30 mm | – | Enzklösterle |
| CNC hard turning machine with counter-spindle | Spinner PD 20 | 1 | Bar parts Ø 32 mm, turning length 100 mm | – | Enzklösterle |
| 3D production measuring system | Keyence XM-5000 | 1 | – | – | Enzklösterle |
| Form and position measuring machine | Zeiss Rondcom 44 | 1 | – | – | Enzklösterle |
| Roundness measuring machine | Mahr MMQ10 | 1 | – | – | Enzklösterle |
| Optoelectronic measuring device | Tesa Scan 52 | 1 | – | – | Enzklösterle |
| Measuring projector | Tesa Scope 350H | 1 | – | – | Enzklösterle |
| Surface roughness measuring device | Zeiss Surfcom Flex 35 B | 1 | – | – | Enzklösterle |
| Surface roughness measuring device | Mahr Perthometer M1 | 1 | – | – | Enzklösterle |
| Length measuring device | Tesa Hite | 1 | – | – | Enzklösterle |
| Length measuring device | Mitutoyo Digimatic ID-H 60 | 1 | – | – | Enzklösterle |
| Small measuring bench | Studenroth | 1 | – | – | Enzklösterle |
| Measuring microscope | Mitutoyo | 1 | – | – | Enzklösterle |
| Thermal deburring system (TEM) | – | 1 | 2,500–3,500 °C | – | Enzklösterle |
| Black oxide coating system (hot black oxide coating) | – | 1 | – | – | Enzklösterle |
Additional services
Reference customers
Quality
The high standard of internal quality controls is ensured by a broad range of measuring equipment, including a 3D production measuring system (Keyence XM-5000), as well as form and position, roundness and surface roughness measuring devices from Zeiss, Mahr and Tesa. The management system is certified to ISO 9001:2015 by SGS.
| Evidence | Enzklösterle |
|---|---|
| ISO 9001:2015 (SGS, valid until 25.05.2027) | |
| 3D production measuring system, roundness, surface roughness and length |
History
- 1954
Founded as an owner-managed family business (Grammel Präzisionsdrehteile GmbH & Co. KG), supplier of precision-mechanical turned parts and assemblies.
- 2012
Initial certification to ISO 9001 (according to SGS certificate).
- 2022
100% acquisition by the Kutlubulut group of companies (including K.Brandstätter CNC-Mechanik GmbH, Calw); renamed Grammel Kutlubulut CNC GmbH; part of a production network with more than 50 CNC machines in Baden-Württemberg.