Machining of flywheels, brake discs and rotating components for the automotive and mechanical engineering industries.
Klenke Maschinenfabrik GmbH
Northeim-SudheimNew on Amplifa
About Klenke Maschinenfabrik
Klenke Maschinenfabrik GmbH is a certified contract manufacturer for machining-based metalworking based in Northeim-Sudheim. The company, with more than 110 skilled employees, machines rotating components such as flywheels, brake discs, wheel hubs, wheel flanges, V-belt pulleys, pinion housings and axle stubs for the automotive, construction machinery and mechanical engineering industries. The machine park comprises 49 lathes (parts 60–750 mm, 1–300 kg), 25 vertical and 8 horizontal pallet-changing machining centres, as well as robot-linked turning and drilling centres for high-volume production. Gears are produced by the gear shaping process as straight internal gears to DIN 5480; ten balancing machines enable static and dynamic balancing of parts up to 200 kg. Materials include cast iron (GJV, GJL, GJS), steels from S235JR to E360 and C45, 16MnCr5 as well as aluminium EN 1706 AC 46000 DF. An in-house toolmaking department designs special tools and fixtures; manufacturing concepts range from fully automated high-volume production to manual single-part production.
- Site
- Northeim-Sudheim
- Processes
- Turning (turn-mill-drill combinations, robot-linked turning and drilling centres), Drilling/Milling (pallet-changing machining centres, vertical and horizontal), Gear cutting (gear shaping process, straight internal gears to DIN 5480), Balancing (dynamic and static, manual and fully automatic), Toolmaking (design and manufacture of special tools and special fixtures), Machining of flywheels, Machining of brake discs, Machining of wheel hubs
- Materials
- Compacted graphite cast iron, Grey cast iron (lamellar graphite), Ductile cast iron (spheroidal graphite), Stainless steel, Non-ferrous metal, Structural steels, Structural steel, Case-hardening steel 16MnCr5
- Certificates
- Quality inspection: dimensional accuracy/surface
- Employees
- 110+ skilled employe
- Industries
- Automotive industry, Commercial vehicles, Construction machinery industry, Mechanical engineering
- 01
Production planning
- 02
Toolmaking (special tools, fixtures)
- 03
Turning
- 04
Drilling/Milling
- 05
Gear cutting (gear shaping)
- 06
Balancing
- 07
Quality inspection
- 08
Logistics
Materials and Processes
Compacted graphite cast iron
For highly stressed rotating components such as flywheels and brake discs.
Grey cast iron (lamellar graphite)
Proven for components with high damping and good machinability.
Ductile cast iron (spheroidal graphite)
For robust components with higher strength.
Case-hardening steel 16MnCr5
For case-hardening precision parts such as axle stubs and pinion housings.
Aluminium AlSi9Cu3(Fe)
Lightweight metal for components requiring weight reduction, e.g. in the automotive sector.
Structural steels
For load-bearing and general mechanical engineering components.
Structural steel C45
For heat-treatable shafts and rotating components.
Locations
Northeim-Sudheim
DEProduction site and headquarters
- Part weight / size
- Components 1–300 kg, dimensions 60–750 mm
- Lot size
- Single-part production, small, medium and large series
- Materials
- GJV, GJL, GJS, steel, 16MnCr5, aluminium
- 49 lathes
- 25 vertical machining centres (pallet changer)
- 8 horizontal machining centres (pallet changer)
- Robot-linked turning and drilling centres
- 4 fully automatic balancing machines
- 3 manual static/dynamic balancing machines
- 3 manual static balancing machines
- Gear shaping machines for internal gears to DIN 5480
- Toolmaking
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Turning (turn-mill-drill combinations, robot-linked turning and drilling centres)Machining | – | 60 – 750 mm (component dimensions) | 1 kg – 300 kg | – | GJV, GJL, GJS, Stainless steel 16MnCr5, EN 1706 AC 46000 DF (AL Si9Cu3(Fe)), S235JR to E360, C45 |
| Drilling/Milling (pallet-changing machining centres, vertical and horizontal)Machining | – | 100 – 600 mm (component dimensions) | 1 kg – 300 kg | – | GJV, GJL, GJS, Stainless steel 16MnCr5, EN 1706 AC 46000 DF (AL Si9Cu3(Fe)), S235JR to E360, C45 |
| Gear cutting (gear shaping process, straight internal gears to DIN 5480)Machining | – | Face width up to 25 mm × Max. part outer diameter 600 mm; | – | – | – |
| Balancing (dynamic and static, manual and fully automatic)Testing | Residual unbalance down to 50–100 gmm depending on machine | Max. outer diameter 750 mm | 200 kg | – | – |
| Toolmaking (design and manufacture of special tools and special fixtures)Engineering | – | – | – | – | – |
| Machining of flywheelsMachining | – | Diameter up to 750 mm × Height up to 200 mm | 250 kg | – | – |
| Machining of brake discsMachining | – | Diameter up to 520 mm × Height up to 150 mm | 70 kg | – | – |
| Machining of wheel hubsMachining | – | Outer diameter 420 mm × Height up to 290 mm | 50 kg | – | – |
| Machining of wheel flangesMachining | – | Outer diameter up to 500 mm × Height up to 150 mm | 100 kg | – | – |
| Machining of V-belt pulleysMachining | – | Outer diameter up to 550 mm × Height up to 200 mm | 100 kg | – | – |
| Machining of pinion housings for commercial vehiclesMachining | – | Outer diameter up to 500 mm × Height up to 200 mm | 60 kg | – | – |
| Machining of axle stubs for commercial vehiclesMachining | – | Outer diameter up to 385 mm × Height up to 230 mm | 15 kg | – | – |
| Manufacturing concepts: automated high-volume production, semi-automated processes, manualMachining | – | 60 – 750 mm | 1 kg – 300 kg | – | GJV, GJL, GJS, Stainless steel 16MnCr5, EN 1706 AC 46000 DF (AL Si9Cu3(Fe)), S235JR to E360, C45 |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Lathe | – | 49 | Dimensions 60 – 750 mm; weights 1 – 300 kg | – | Northeim |
| Vertical machining centre (pallet changer) | – | 25 | Dimensions 100 – 600 mm; weights 1 – 200 kg | – | Northeim |
| Horizontal machining centre (pallet changer) | – | 8 | Dimensions 100 – 600 mm; weights 1 – 300 kg | – | Northeim |
| Fully automatic balancing machine | – | 4 | Max. outer diameter 500 mm; max. residual unbalance 50 gmm; max. component weight 70 kg | – | Northeim |
| Manual static/dynamic balancing machine | – | 3 | Max. outer diameter 500 mm; max. residual unbalance 100 gmm; max. component weight 90 kg | – | Northeim |
| Manual static balancing machine | – | 3 | Max. outer diameter 750 mm; max. residual unbalance 100 gmm; max. component weight 200 kg | – | Northeim |
| Robot-linked turning and drilling centres | – | – | – | – | Northeim |
Additional services
Quality
The machined workpieces are inspected for dimensional accuracy and surface quality in accordance with the specified quality standards. Dynamic and static balancing on ten machines (residual unbalance from 50 gmm) ensures the quality of rotating components.
| Evidence | Northeim-Sudheim |
|---|---|
| Quality inspection: dimensional accuracy/surface |