Ball and Roller Bearing Rings

Engineered for high-precision bearing applications and dependable manufacturing consistency
  1. Expertise in high-strength bearing steel 100Cr6
  2. End-to-end process control
  3. Flexible co-engineering support

Prosino manufactures ball and roller bearing rings for high-precision applications, combining decades of engineering expertise with a fully integrated production approach. From European-certified raw material sourcing to turning, heat treatment, and finishing, every step is managed in-house to ensure consistent quality, reliability, and customization.

With deep bearing expertise, Prosino supports demanding industries such as machine tools and aerospace, where precision, flexibility, and performance are critical.

Why Choose Prosino Ball and Roller Bearing Rings?

  • Wide dimensional range: ring products from 8 mm bore diameter to 300 mm outer diameter to suit diverse high-precision bearing applications
  • Full manufacturing expertise: from raw material sourcing to turning, heat treatment, and vibro-polishing ensuring top-quality rings
  • Reliable process consistency: every production step is monitored and recorded in Prosino's ERP system for consistent quality
  • Co-engineering support: collaborate with Prosino to optimize geometries and reduce costs for custom bearing projects
  • Flexible production setup: equipped with multi-spindle lathes, CNC lathes, heat-treating lines, and advanced surface treatment capabilities
  • Proven market experience: over 60 million rings sold for super-precision bearings across machine tools, aerospace, hydraulics, and industrial applications

Key features

  • Premium materials: European-sourced raw materials for durable, high-quality bearing rings
  • Precision manufacturing: advanced turning technologies for flexible and accurate production
  • Integrated processes: in-house heat treatment and vibro-polishing for consistent quality
  • Optimized design: 3D CAD studies to improve geometries and bearing performance
  • Custom solutions: EDM-profile tools for tailored ball and roller bearing ring designs
  • Expert support: eechnical advisory and fast problem-solving throughout production

Technical data

Parameter 
Outer diameterUp to 300 mm
Inner diameterFrom 8 to 250 mm
MaterialsEuropean-certified bearing steels (100Cr6, 440C, others upon request)
Heat treatmentOil quenching in batch or continuous furnace
Surface finishingVibro-polishing, black oxide, hard chrome plating, zinc plating, nickel plating
Tolerance classesAccording to customer specifications/industry standards

Applications

Prosino ball and roller bearing rings are used in a wide range of high-precision and demanding applications, including:

  • Machine tools: high-speed and high-precision spindle systems
  • Aerospace: critical components requiring maximum reliability and performance
  • Hydraulic motors: durable solutions for high-load and continuous operation
  • Textile machinery: precision rings for spinning and twisting applications
  • Industrial valves: components for demanding flow control systems
  • Specialized mechanical engineering: custom solutions for complex and high-performance applications
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    Talk to Our Experts

    Get in touch with Prosino's specialists for technical advice, product information, and tailored solutions.

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