PREFAG Carl Rivoir GmbH & Co. KG
Germany, 75045 Walzbachtal
Overview
About PREFAG Carl Rivoir GmbH & Co. KG
Who we are
PREFAG has been located in Walzbachtal for more than 65 years. We are a strong partner as a supplier in sectors such as industry, medicine, aviation and automotive. Our qualified expert team actively supports customers and suppliers in the development of new components and assemblies. The complex and miniaturized turned parts up to ø30 mm are our core competence. We have innovative strategies and a high level of vertical integration in the manufacture of short and long turned parts - including further processing, eg heat and surface treatments.
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Walzbachtal, Germany
Member since 2022
Employees200 - 500
Certificates2
Turnover20 - 50 Mil.
Year of foundation1954
Competencies
Technologies
Finishing
| Technologies | Lotsize | Length | Width | Height | Diameter | Weight |
|---|---|---|---|---|---|---|
External cylindrical grinding | 10,000–500,000 | 0–100 mm | — | — | 0–50 mm | — |
Centreless grinding | 10,000–10 M | 5–150 mm | — | — | 2–30 mm | 0–0.25 kg |
Circular honing - internal | 10,000–1 M | 1–30 mm | 1–30 mm | 1–30 mm | 4–20 mm | 0.001–0.25 kg |
Rotofinishing, barrel finishing | 10–10 M | 2–30 mm | 2–30 mm | 2–30 mm | — | — |
Turning
| Technologies | Lotsize | Length | Diameter |
|---|---|---|---|
Turning | 1,000–10 M | 0.2–100 mm | 1–30 mm |
Automatic turning (bar) | 1,000–10 M | 0.2–100 mm | 1–30 mm |
Swiss turning | 1,000–10 M | 0.2–100 mm | 1–30 mm |
Full-range turning (including milling) | 1,000–10 M | 0.2–100 mm | 1–30 mm |
Hard turning | 1,000–10 M | 1–100 mm | 1–20 mm |
Materials
Light metals
Aluminium and aluminium alloysTitanium and titanium alloys
Heavy metals
Copper-zinc alloys (brass)
Steel
Case hardening/tempering steelStainless steel (rust-proof V2A)Stainless steel (rust-proof V4A)Free-cutting/mild steel
Industries
Aerospace and aviation industryAir conditioning, refrigeration and ventilation industryPrecision engineering, mechatronics and opticsRailway and rail vehicles industryMedical technologyAutomation and control engineeringMeasurement and control technique, laboratory equipmentAutomotive and vehicle constructionSpecial purpose machinery manufacturingDrive and gear engineeringHydraulic and pneumatic industryMechanical engineering
Certificates
ISO 9001:2015
EN 9100
Parts & Machines
Parts (12)
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Magnetanker
TechnologyAutomatic turning (bar)
MaterialFree-cutting/mild steel
Dimensions
Length24 mm
Diameter8 mm
Lotsize1500000
ComplexityLow
IndustriesAutomotive and vehicle construction
DescriptionAbmaße: >Ø8 x 24mm
Werkstoff: Magnetventilstahl
Bohrung: Ø3,8
gratfrei + hohe Oberflächenanforderungen der Laufflächen
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Ring
TechnologyAutomatic turning (bar)
MaterialFree-cutting/mild steel
Dimensions
Length5.55 mm
Diameter16 mm
Lotsize100000
ComplexityMedium
IndustriesAutomotive and vehicle construction
DescriptionAbmaße: Ø16x5,55 mm
Werkstoff: 1.0715
Bohrung: Ø12,5
absolute Gratfreiheit an den Steuerkanten erforderlich
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Montageteil
TechnologyAutomatic turning (bar)
MaterialFree-cutting/mild steel
Dimensions
Diameter9 mm
Length20 mm
Lotsize8000000
ComplexityMedium
IndustriesAutomotive and vehicle construction
DescriptionAbmaße: Ø9x20 mm
Werkstoff: 1.0715/Messing
Bohrung: Ø6 +0,01
Lagetoleranzen <0,01mm
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Kolben montiert
TechnologyAutomatic turning (bar)
MaterialStainless steel (rust-proof V2A)
Dimensions
Diameter6.8 mm
Length52 mm
Lotsize500000
ComplexityMedium
IndustriesHydraulic and pneumatic industry
DescriptionAbmaße: Ø6,8x52 mm
Werkstoff: Edelstahl
Hohe Oberflächenanforderungen an Laufflächen- und Steuerkante Formtoleranzen < 0,01mm.
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Düse
TechnologyAutomatic turning (bar)
MaterialStainless steel (rust-proof V2A)
Dimensions
Diameter2.35 mm
Length7.5 mm
Lotsize50000
ComplexityLow
IndustriesHydraulic and pneumatic industry
DescriptionAbmaße: Ø2,35 x 7,5mm
Werkstoff: 1.4125
Bohrung: Ø0,41 ±0,02
Gehärtet HRC 55-62
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Kolbenschiebergruppe
TechnologyAutomatic turning (bar)
MaterialStainless steel (rust-proof V2A)
Dimensions
Diameter15 mm
Length30 mm
Lotsize50000
ComplexityMedium
IndustriesHydraulic and pneumatic industry
DescriptionAbmaße: Ø15 x 30 mm
Werkstoff: 1.4305
Bohrung: Ø6,5 ±0,002
Zylinderform 0,002
Passspiel 0,001-0,003 mm
Kolsterisierung
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Buchse
TechnologyAutomatic turning (bar)
MaterialStainless steel (rust-proof V2A)
Dimensions
Diameter18 mm
Length38 mm
Lotsize20000
ComplexityMedium
IndustriesMedical technology
DescriptionAbmaße: Ø18x38 mm
Werkstoff: 1.4305
Bohrung: Ø10
Bohrung Ø10 aufgrund Oberflächen- und Toleranzanforderungen gehont
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Stift
TechnologyAutomatic turning (bar)
MaterialStainless steel (rust-proof V2A)
Dimensions
Diameter1.1 mm
Length40 mm
Lotsize500000
ComplexityMedium
IndustriesMedical technology
DescriptionAbmaße: Ø1,1x40mm
Werkstoff: härtbarer Edelstahl
präziser Rundlauf des Zapfens zum Konus gefordert
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Gehäuse
TechnologyAutomatic turning (bar)
MaterialFree-cutting/mild steel
Dimensions
Length55 mm
Diameter20 mm
Lotsize50000
ComplexityMedium
IndustriesMedical technology
DescriptionAbmaße: ø20 mm
Werkstoff: 1.4305
Bohrung: ø19
5 Passungen IT7 mit Hüllbedingung
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Scheibe
TechnologyAutomatic turning (bar)
MaterialStainless steel (rust-proof V4A)
Dimensions
Length1.4 mm
Diameter8.2 mm
Lotsize100000
ComplexityLow
IndustriesAerospace and aviation industry
DescriptionAbmaße: Ø8,2x1,4mm
Werkstoff: hochlegierter Edelstahl für die Luftfahrt
Bohrung: ø1,5
absolute Gratfreiheit an allen Fräskanten
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Spitzenträger
TechnologyAutomatic turning (bar)
MaterialAluminium and aluminium alloys
Dimensions
Diameter6 mm
Length3.15 mm
Lotsize30000
ComplexityMedium
IndustriesAerospace and aviation industry
DescriptionAbmaße: Ø6x3,15x2,6
Werkstoff: Aluminium
Absolute Gratfreiheit an den Fräskanten
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Magnetkern (Relais)
TechnologyAutomatic turning (bar)
MaterialFree-cutting/mild steel
Dimensions
Length32 mm
Diameter7 mm
Lotsize250000
ComplexityLow
IndustriesRailway and rail vehicles industry
DescriptionAbmaße: Ø7x32 mm
Werkstoff: 1.0715
Vierkant: 8x15,5
abgewinkelte Schaltkanten
Machinery (13)
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Deco 10 (17 Stück)
ManufacturerTornos
Technology
Swiss turningAutomatic turning (bar)TurningFull-range turning (including milling)
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Deco 13 (8 Stück)
ManufacturerTornos
Technology
Automatic turning (bar)Swiss turningFull-range turning (including milling)Turning
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SR20 (30 Stück)
ManufacturerSTAR
Technology
Automatic turning (bar)Swiss turningFull-range turning (including milling)Turning
4 / 13
TNK/TNL 12 (7 Stück)
ManufacturerTRAUB
Technology
Automatic turning (bar)TurningFull-range turning (including milling)Swiss turning
5 / 13
Deco 20 (2 Stück)
ManufacturerTornos
Technology
Full-range turning (including milling)Automatic turning (bar)TurningSwiss turning
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SW 12 (2 Stück
ManufacturerSTAR
Technology
Automatic turning (bar)Full-range turning (including milling)TurningSwiss turning
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8SP (11 Stück)
ManufacturerTornos
Technology
TurningFull-range turning (including milling)Automatic turning (bar)
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MultiSwiss (8 Stück)
ManufacturerTornos
Control6 Spindeln
Technology
Automatic turning (bar)TurningFull-range turning (including milling)
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MultiSigma (2 Stück)
ManufacturerTornos
Control8 Spindeln
Technology
TurningAutomatic turning (bar)Full-range turning (including milling)Swiss turning
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SA12/16 (5 Stück)
ManufacturerSTAR
Technology
TurningAutomatic turning (bar)Full-range turning (including milling)Swiss turning
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Multistar (2 Stück)
ManufacturerMikron
Control24 Stationen
Technology
TurningFull-range turning (including milling)
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Flexmaster (2 Stück)
ManufacturerWinema
Technology
Full-range turning (including milling)Turning
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TNC-L (6 Stück)
ManufacturerBenzinger
Technology
Hard turning
12 Parts
Automatic turning (bar)12
13 Machinery
Swiss turning8
Automatic turning (bar)10
Turning12
Full-range turning (including milling)12
Hard turning1
Contact
Location
Main locationPrefagstraße 4, 75045 Walzbachtal, Germany
Further locationsWir sitzen im Landkreis Karlsruhe
Company contact
Contact persons
BV
Beatrice Vetter
AM
Andreas Meizinger
VK
Viktor Kistner
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