Bearing Modification

Our modification program provides customers with flexible solutions to their bearing problems. Through the use of existing inventory we can modify standard products to fit the most specific application requirements. Modifying existing products reduces lead time and increases savings while significantly enhancing the products performance in application. We are equipped to conduct precision and simple modifications, ensuring the bearing will operate efficiently. Bearing modification is part of the industrial bearing Condition Analysis Reclamation (CAR) program. Carter Manufacturing Limited offers a range of bearing modification services to support our customers that push their bearings to the limit.

The bearing modifications are separate from our bearing relubrication services as they fundamentally change the geometry of the bearing assembly. Increasing the radial clearance to account for thermal expansion for high temperature applications can drastically improve bearing performance. Adding anti-rotation features so there is no slippage in the system through a temperature gradient is a way to bring your mechanical system to the next level. 


Carter bearings not only perform these bearing modifications but can also utilize decades of application experience to provide consultation on the best options to achieve your goals.


Our most popular services are shown below:

Oil Holes and Grooves

  • W33 designation

Special Width Requirements

Crown Outer Ring

Taper Roller Bearings Pairs

Seal/Shield Additions

  • Teflon
  • PEEK
  • PTFE

Precision Spacers

  • Tapered Roller Bearing Sets

Dry Film and Specialty Lubricants

Simple Modification

Snap Ring Grooving


  • All grease types for special applications – Mobil 28, Exxon Polyrex EM, Aeroshell #7, Chevron SRI#2, Andok C, Shell Alvania #2, Food grade greases, Kluber greases, Krytox greases, etc.

Seal/Shield Replacements

Special Marking

Special Marking

  • Air pencil
  • Electrochemial
  • Laser engraving

Duplex Grinding

  • Angular contact ball bearings
    • Back-to-Back
    • Face-to-Face
    • Tandem
    • Stacks
  • Deep groove ball bearings

Radial Clearance Changes

  • C3
  • C4
  • C5
  • Custom

Ceramic Hybrid

  • Angular contact ball bearings
  • Deep groove ball bearings

Specialty Cages

  • PEEK, Vespel, Nylon, Bronze, Steel, Phenolic
  • 1-piece machined snap-on
  • 1-piece machined full pocket
  • 2-piece machined riveted

Anti-Rotation holes, grooves, slots

Non-Standard Bore Sizes

  • Enlarging a bearing bore to special dimensions and tolerances

Tapered Bore 1:12

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