Custom and Special Ball Bearing Manufacturing in Italy

CPM is recognised as a leading ball bearing manufacturer in Italy and across Europe.
With more than 50 years of experience in designing and manufacturing custom mechanical components, CPM is the ideal partner for companies looking for the supply and development of special, made-to-drawing ball bearings. 

Thanks to its highly flexible manufacturing processes, CPM can produce batches of any size, meeting both high-volume production requirements and low-volume supply needs.

Types of Ball Bearings Manufactured by CPM

CPM’s product range includes several types of special ball bearings, which can be customised in terms of dimensions, materials, treatments and internal components to meet the technical requirements of each industrial application:

  • Deep groove ball bearings
  • Angular contact ball bearings
  • Four-point contact ball bearings

All CPM ball bearings are available within a dimensional range extending from a minimum bore diameter of 10 mm to a maximum outside diameter of 800 mm.

Radial Rigid Ball Bearings

Deep groove ball bearings are versatile, robust and cost-effective mechanical components.
Thanks to their simple geometry, they are primarily designed to support radial loads, while also being able to withstand limited axial loads. 

CPM deep groove ball bearings can be configured in several structural and operating variants:

  • Sealing and lubrication: available in shielded and greased-for-life versions, open and ungreased versions, or configurations designed for direct lubrication within the machine using oil or grease. 
  • Cage options: available with brass, steel or plastic cages. Depending on the operating requirements, full-complement versions without a cage can also be manufactured. 
  • Rotational speed: caged versions are suitable for high rotational speeds. 
  • Surface treatments and coatings: special treatments such as chrome plating, phosphating, zinc plating or black oxide can be applied according to the technical requirements. 
  • Ceramic balls: available for specific applications and operating conditions. 

CPM deep groove ball bearings are mainly manufactured from through-hardened chromium bearing steel or case-hardening steel.
Stainless steel versions are also available for applications with specific environmental or operating requirements. 

Minimum bore diameter: 10 mm
Maximum outside diameter: 800 mm 

Deep groove ball bearings are used across a wide range of industries and machinery, including:

  • Marble-cutting machines
  • Electric motors
  • Textile looms
  • Bicycles

Oblique Contact Ball Bearings

Angular contact ball bearings have a construction similar to that of deep groove ball bearings.
However, they feature a specific raceway geometry designed to support combined loads, with radial and axial loads acting simultaneously. 

  • Single-row configuration: single-row angular contact ball bearings must always be paired with a second bearing mounted in opposition. The paired bearing is normally identical, although bearings with different dimensions or contact angles may be used for specific applications. 
  • Load capacity and speed: as the contact angle increases, the bearing’s axial load capacity also increases. When preloaded, angular contact bearings provide high stiffness and can operate at very high rotational speeds. 
  • Supply options: available in shielded and greased-for-life versions, open and ungreased versions, or configurations designed for oil or grease lubrication within the machine. 
  • Cages and coatings: cages are available in brass, steel or plastic. Protective or functional surface treatments can include chrome plating, phosphating, zinc plating and black oxide. 

Angular contact ball bearings can be manufactured from:

Through-hardened chromium bearing steel
Case-hardening steel
Stainless steel
Special configurations with ceramic balls 

Minimum bore diameter: 10 mm
Maximum outside diameter: 800 mm 

  • Textile looms
  • Planetary gearboxes
  • Machine tools
  • Axles
  • Bottling machines

Four-Point Contact Bearings

Four-point contact ball bearings feature a construction similar to that of angular contact bearings, with an internal geometry specifically designed to support combined loads.
Compared with double-row angular contact bearings or paired single-row angular contact bearings, four-point contact bearings offer the significant advantage of requiring less axial installation space. 

  • Multidirectional load capacity: their special internal geometry enables them to support radial loads, axial loads in both directions and overturning moments. 
  • Structure and components: they are generally manufactured as full-complement ball bearings and incorporate dedicated plastic separators designed to improve rolling performance and operating life. 
  • Stiffness and speed: when preloaded, four-point contact bearings provide high structural stiffness. However, they are not suitable for extremely high rotational speeds. 
  • Configurations and treatments: available in shielded and greased-for-life versions, open versions or configurations lubricated directly within the machine. Surface treatments can include chrome plating, phosphating, zinc plating and black oxide. 

Four-point contact ball bearings can be manufactured from chromium bearing steel using:

Through-hardening
Case-hardening
Induction-hardening processes 

Minimum bore diameter: 10 mm
Maximum outside diameter: 800 mm 

  • Wheel motors
  • Gearboxes for robotics and axis positioning systems
  • Rotary tables
  • Machine tools

Partner for the Production of Custom Ball Bearings

CPM designs and develops made-to-drawing bearing solutions for several key industrial sectors:

  • Food and beverage
  • Agriculture
  • Automotive
  • Bicycles
  • Hydraulic motors
  • Hydraulic motors
  • Medical equipment
  • Robotics
  • Textile machinery
  • Mechanical power transmission

When you need a reliable partner for the manufacture and supply of special, custom-made ball bearings, rely on CPM’s experience.

We bring more than 50 years of technical expertise to every project, supporting customers throughout the development of customised bearing solutions.

Contact us to request further information about our custom ball bearing manufacturing capabilities. 

Frequently Asked Questions About Ball Bearing Manufacturing

CPM manufactures ball bearings within a dimensional range extending from a minimum bore diameter of 10 mm to a maximum outside diameter of 800 mm.

Thanks to the flexibility of its manufacturing processes, CPM can produce both high-volume batches and smaller quantities, providing customised solutions based on each customer’s technical and production requirements.

Deep groove ball bearings are primarily designed to support radial loads, together with limited axial loads.

Angular contact ball bearings feature a specific raceway geometry designed to support combined loads, with radial and axial loads acting simultaneously. 

Four-point contact ball bearings can support radial loads, axial loads in both directions and overturning moments.

They also require less axial installation space compared with double-row angular contact bearings or paired single-row angular contact bearings. 

CPM ball bearings can be manufactured from through-hardened, case-hardened or induction-hardened chromium bearing steel.

Stainless steel versions and special configurations with ceramic balls are also available.

Available surface treatments and coatings include chrome plating, phosphating, zinc plating and black oxide. 

If you are looking for a reliable partner for custom ball bearing manufacturing, trust us at CPM: we put over 50 years of experience at your disposal!

    Contact us for more information

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