Pillow block, mounted unit & linear bearing interchange
Mounted and linear products need installation geometry that is not captured by a simple d×D×B comparison.
On this page4 sections ⌄
What to check
Mounted units
Check bolt pitch, centre height, housing material, insert outer profile, locking collar or set screws and expansion/non-expansion function.
Linear systems
Check rail profile, carriage mounting, preload and accuracy class, seals, lubrication ports and moment capacity. Equal rail width does not establish interchange.
Use a dimensional drawing
Treat an absent mounting dimension as a blocking verification item. The comparison table does not assume missing geometry is identical.
Continue with real catalogue data
Preserve the full model, source description and unknown fields when making your shortlist. This reference website does not sell bearings or certify a replacement.
Related questions and tools
Bearing interchange checklist: beyond matching dimensions
Cross-reference results are candidates for verification. A shared base number or envelope is not a manufacturer-approved replacement statement.
Read and apply →Bearing suffix cross reference: keep the complete marking
A base designation groups possible relatives. Suffixes identify differences that can determine whether a replacement works.
Read and apply →Tapered bearing cross reference: cups, cones & sets
A cone identifier alone does not define every possible cup-and-cone assembly.
Read and apply →OEM & legacy bearing numbers: what this catalogue can verify
OEM, National, Fafnir, Torrington, RHP, SNR, McGill, Dodge and other legacy-number searches need an evidenced identifier relationship, not a similar-looking model.
Read and apply →Reference basis & data limits
Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.
Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.