Precision machined components for the rail sector

Set of inner and outer rings, cones and cups for the rail sector

PSI produces precision machined components including inner rings and outer rings for the rail sector.
The experience of our industrialisation team, as well as the performance of our range of machines and our testing equipment, enables us to present ourselves as a key partner able to satisfy your requirements in terms of machining high added-value components in medium sized production runs.

We are proficient in the procurement and machining of materials including 100Cr6 or 100CrMo7, originating from bars, tubes, ring-rolled products or forgings.

Dimensions: from Ø40 to Ø900 mm

Machined parts for the rail sector

The different steps of part machining for the railway sector

We work according to the requirements of large contractors and proceed to the prototype, initial samples, PPAP phases then launch into series production and transmission of control reports.

Our control process includes a validation phase at the start of series, automatized control in production then final control before shipment (editing and transmission of a control report).

Our in-house manufacturing process: sawing, turning, milling, cutting, induction hardening, grinding, lapping allows us to guarantee parts with very high added value (location, position, parallelism, precise surface finishing, etc.)

We machine all types of metals and have a perfect knowledge of bearing steels such as 100Cr6 or 100CrMo7 from bars, tubes, circular rolling or forging.

The diversity and versatility of our machine park allows us to adapt to the majority of industrial needs.

Our experience as well as the complementarity of our machine park (turning, machining centresInduction hardening, grindingflat lapping, etc.) allow us to offer complete services through a partnership capable of providing technical and economic solutions by offering adaptations, different sources of supply (forging, foundry, laser cutting, flame cutting, etc.)

Integrating the entire production chain internally ensures responsiveness, technical mastery and quality, and proposals for economic optimization.

Types of blanks used for the manufacture of parts for the railway sector

  • Bars
  • Tubes
  • Forging
  • Foundry
  • Laser cutting
  • Flame cutting
  • Profile

Type of materials used for machining parts for the railway sector

  • Alloyed and non-alloyed steels
  • FGL and FGS grey cast iron
  • Stainless steel
  • Bronze
  • Brass
  • Aluminium
  • Bi-metal

Outer ring – Cup

Size of the outer ring in the cup:

  • Outer cup Ø185 to Ø220


  • Bearing steel forged 100CrMo7

Production rate:

  • 5,000 cups/year

Inner ring – Cone

Size of the 2 cones of the inner ring:

  • 2 inner cones Ø185 to Ø220


  • forged 100Cr6 or 100CrMo7

Production rate:

  • 10,000 cones/year