Technical characteristics and certifications of bearings

Premium quality, on par with the main brands, ensured by the best European suppliers, in compliance with the highest international quality standards (ISO 683-17):

• 100Cr6
• 100CrMnSi6-4
• 100CrMo7-3
• 100CrMo7

Traceability of the raw material up to casting (3.1 certificates).

Use of forgers specialized in the sector (Hot-rolling technology).

Optional: Possibility of using materials optimized according to the application (Remediation: 100Cr6A; Cementation: SAE4320, SAE3311, SAE8620; Stainless: Cronidur 30, M50, AISI440C ...). 

Our special processes meet the highest standards of quality and performance.

• Quality assured thanks to capillary dimensional checks in line.
• Quality of incoming materials constantly checked (Advanced Incoming inspection).
• 2nd and 3rd level personnel for NDT checks.
• State-of-the-art control tools specific for bearings (CMM, roundness gauges, profilometers, roughness gauges ...).

Optional Controls:

• Specialized NDT controls (Nital attack, Metalloscope, Ultrasound). 
• Specialized laboratory technological controls (Metallography, Micro-hardness, Chemical analysis…). 
• Dimensional reports on request.

Optional Certifications:

• CoC
• FAI
• PPAP

• Constant control of environmental and cleaning parameters.
• Complete, high-tech machinery.
• Continuous research into new production technologies (testing wheels, diamonds, tools,…).
• Organization of production processes based on LEAN and Six Sigma logic.
• Continuous monitoring of process capabilities (Cp, Cpk).
• Scheduled and predictive maintenance of the plants.

Spheres:

• Production at the Umbra group plant in Eltmann Germany, the heart of the bearing industry for decades.
• Procurement according to more stringent internal regulations than international standards (ISO 3290).

Rollers:

• Carefully selected premium suppliers.
• Adhering to the most stringent international standards (DIN 5402-1).
• On request: profiles optimized according to the application.

Cages:

• Design and construction of cages in brass, steel, bakelized fabric, polyamide, designed to ensure the best performance.
• On request: cages optimized according to the application.

Seals:

• On request: study and design of sealing systems against contamination in the most severe environments.