Manufacturing of heavy linear guide rails through planing and milling processes in Rohr, Thuringia.
EZM Profilbearbeitung GmbH
Rotes Tal 5, 98530 Rohr (DE)New on Amplifa
About us
EZM Profilbearbeitung GmbH at its Rohr site in Thuringia manufactures heavy linear guide rails for the machine tool and mechanical engineering industries through a combination of planing and milling processes. This process combination is considered a cost-effective and high-quality alternative to traditional manufacturing technology from hot rolling followed by cold drawing; the rails are planed stress-free, since forming is dispensed with. The company machines steel and stainless steel according to customers' drawing specifications and achieves longitudinal roughness of Ra 1.0 µm and bar length tolerances of ±0.05 mm. Services include planing, pre-milling of profiles and square sections, annealing (GKZ) and stress relieving, straightening with press forces of 75–140 t, as well as shot blasting and packaging with corrosion protection. Manufacturing takes place exclusively in Germany; customers include all major European manufacturers of linear guides. The company employs around 30 staff and belongs to the EZM Group.
- Site
- Rohr
- Processes
- Planing (linear guide rails, planed stress-free), Milling (pre-milling of profiles and square sections), Annealing (GKZ), stress relieving/post-annealing, Shot blasting (round and square sections), Straightening (incl. torsion straightening), Manufacturing of linear guide rails (combination of planing/milling), Planing to drawing specifications, Annealing (GKZ) and stress relieving (post-annealing)
- Materials
- Steel, Stainless steel, Planing, Milling, Annealing (GKZ) and stress relieving, Straightening, Shot blasting
- Certificates
- Certified partner (certificate type not specified on website)
- Founded
- 2002
- Employees
- 30
- Industries
- Machine tool construction, Mechanical and plant engineering
- 01
Planing to drawing specifications
- 02
Milling (pre-milling of profiles and square sections)
- 03
Annealing (GKZ) and stress relieving
- 04
Straightening (75–140 t)
- 05
Shot blasting
- 06
Packaging with corrosion protection
Manufacturing processes and materials
Steel
Main material for linear guide rails, profiles and square sections; machinable up to 125 mm cross-section and 6,250 mm length.
Stainless steel
Planed for applications with requirements on surface finish and corrosion resistance.
Planing
Stress-free profile production to drawing specifications, Ra 1.0 µm longitudinally.
Milling
Pre-milling of profiles and square sections up to 6,250 mm length.
Annealing (GKZ) and stress relieving
Bogie hearth furnace up to 750 °C, max. 65,000 kg, internal dimensions 3340 x 6668 x 1100 mm.
Straightening
Press force 75–140 t, torsion straightening, tolerance 0.5 mm/m.
Shot blasting
Round and square sections, cross-section max. 65 x 65 mm, lengths 1600–6250 mm.
Sites
Rohr
DEManufacturing site (profile machining, linear guide rails)
- Part weight / size
- Cross-sections 45–125 mm, bars 2,000–6,000 mm
- Materials
- Steel, stainless steel
- Planing machines
- Milling machines
- Bogie hearth furnace (3340 x 6668 x 1100 mm, tmax. 750 °C, max. 65,000 kg)
- Straightening machine/press (75–140 t)
- Shot blasting system (65 x 65 mm, 1600–6250 mm)
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Planing (linear guide rails, planed stress-free)Machining | +/- 0.05 mm (bar lengths) · Ra 1.0 µm (longitudinal), Ra 5.0 µm | 6250 mm (bars 2000-6000 mm) × 125 mm (cross-section) × 125 mm (cross-section) | – | – | Steel, Stainless steel |
| Milling (pre-milling of profiles and square sections)Machining | – | 6250 mm × 125 mm | – | – | Steel |
| Annealing (GKZ), stress relieving/post-annealingHeat treatment | – | 6668 mm × 3340 mm × 1100 mm | 65,000 kg | – | Steel |
| Shot blasting (round and square sections)Surface | – | 6250 mm (1600-6250 mm) × 65 mm × 65 mm | – | – | Steel |
| Straightening (incl. torsion straightening)Forming | 0.5 mm / 1000 mm | 6250 mm (700-6250 mm) × 65 mm × 65 mm | – | – | Steel |
| Manufacturing of linear guide rails (combination of planing/milling)Machining | +/- 0.05 mm · Ra 1.0 µm | 6250 mm × 125 mm | – | – | Steel |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Bogie hearth furnace (annealing furnace) | – | – | Internal dimensions 3340 x 6668 x 1100 mm, tmax. 750°C, max. 65,000 kg | – | Rohr, Thuringia |
| Shot blasting system | – | – | Cross-section max. 65 x 65 mm, lengths 1600-6250 mm | – | Rohr, Thuringia |
| Straightening machine / press (press force 75-140 t) | – | – | Bar lengths 700-6250 mm, cross-section max. 65 x 65 mm | – | Rohr, Thuringia |
| Planing machine | – | – | – | – | Rohr, Thuringia |
| Milling machine | – | – | – | – | Rohr, Thuringia |
Additional services
Reference customers
Quality
The products are manufactured exclusively in Germany; surface quality (Ra 1.0 µm longitudinally), length tolerances of ±0.05 mm and near-complete stress-free condition ensure further processability. Packaging is done in clamping frames or wooden boxes with VCI paper or corrosion protection film.
| Evidence | Rohr |
|---|---|
| Certified partner (certificate type not specified on website) |
History
- 1994
Founding of Poppe Waagen-, Stahl- und Apparatebau by Engelbert Poppe in Rohr, production of linear guides for machine tools.
- 2002
Acquisition by EZM Edelstahlzieherei Mark and founding of EZM Profilbearbeitung GmbH; continuous optimization of production processes.