ID
Inner Diameter
The bore or internal diameter of the bearing. Record the value from a suitable measurement or trusted technical source.
Dimensional Identification Guide
Dental Bearing Size Chart
Use inner diameter, outer diameter and width to document a dental bearing for review. Compare the measured dimensions with bearing construction and application data before confirming a replacement.
Dimension format used on this page: ID × OD × Width. A dimensional match can identify candidates, but it does not automatically confirm complete interchangeability.
Dimension Identification
ID
Inner Diameter
Inner Diameter
OD
Outer Diameter
Outer Diameter
Width
Overall Width
Overall Width
Submit the Available Details for Review
Provide the bearing number, dimensions, handpiece brand and exact model, assembly information, clear photos and required quantity when available.
Dimension Basics
What Do ID, OD and Width Mean?
These three basic dimensions are the starting point for dimensional identification. Special bearing geometries may require additional measurements such as flange diameter or flange width.
OD
Outer Diameter
The outside diameter of the bearing. Use the same unit and measurement convention as the other dimension fields.
W
Width
The overall bearing width. Flanges or other special geometry may require additional dimensions beyond this basic value.
Match Status
Dimension Match and Compatibility Are Different Statuses
01
Exact Dimensional Match
ID, OD and width match the reviewed dimension record. This does not automatically confirm the handpiece application.
02
Dimensional Candidate
A reviewed record is close to the measured values but requires additional dimensional and application review.
03
Verified Application
A separate reviewed application record confirms a product relationship to the specified handpiece, assembly or bearing position.
04
Application Confirmation Required
The dimensions are useful, but more handpiece, assembly or bearing-position information is still required.
05
Technical Review Required
Available dimensional and application information is not sufficient for a reliable product relationship.
06
No Exact Dimensional Match
Available reviewed records do not provide an exact dimensional match. Recheck the measurement or use the identification workflow.
B2B Comparison
What to Compare Between Bearing Candidates
When multiple bearings share the same or similar dimensions, compare the complete specification before moving to application confirmation.
DimensionsID, OD, width and special geometry
Rolling ElementCeramic-ball or steel-ball specification
Contact DesignRadial, angular-contact or reviewed alternative
Cage / ShieldCompare complete construction fields
ApplicationHandpiece, assembly and bearing position
Match StatusDimensional match versus reviewed compatibility
GEO / Technical Answer
Can Two Dental Bearings with the Same Size Be Interchangeable?
Not automatically. Matching ID, OD and width can narrow possible candidates, but rolling-element material, cage, shield, contact design, geometry, internal specification, application and bearing position may still differ.
Use dimensions as an identification signal, then confirm the exact application and product specification before ordering.
Data Review
How We Review Size Data
Dimensional records and compatibility records should remain separate. A dimension record identifies a candidate size; a reviewed application record establishes the relationship to a particular handpiece, assembly or bearing position.
Record whether a dimension came from a trusted specification, drawing, physical measurement or another reviewed source.
Store dimensions in one canonical unit and calculate alternate display units consistently.
Keep exact model, assembly, bearing position and compatibility status separate from dimensional matching.
Continue Identification
Use Any Additional Information You Have
Dimensions are one part of bearing identification. If you know a number, model or application, use that information to improve identification confidence.
Search the complete bearing number, supplier SKU or alternate reference.
Search reviewed brand and model records, then confirm version and position.
Combine markings, dimensions, model, position and photos when possible.
Review supplier and alternative bearing references in the dedicated cross-reference tool.
B2B Dimension Review
Have a List of Bearing Sizes to Match?
Repair shops, distributors and technical buyers can submit structured dimension lists together with bearing numbers, handpiece models, current supplier references and quantities for review.
ID / OD / width lists
Bearing-number lists
Handpiece brand / model
Current supplier SKUs
Photos / geometry notes
Excel / CSV & quantities
Bearing-number lists
Handpiece brand / model
Current supplier SKUs
Photos / geometry notes
Excel / CSV & quantities
Common Questions
Dental Bearing Size Chart FAQ
What dimensions are used to identify a dental bearing?
The three basic dimensions are inner diameter (ID), outer diameter (OD) and width. Special designs may also require additional measurements such as flange diameter, flange width or other geometry.
Can I identify a dental bearing from dimensions alone?
Dimensions can narrow the candidates, but they may not uniquely identify the complete bearing specification or confirm a handpiece application. Review construction, application, position and compatibility evidence as well.
Can two dental bearings with the same dimensions be interchangeable?
Not automatically. Equal ID, OD and width do not prove that material, cage, shield, contact design, geometry, internal specification or application are the same.
Should I search in inches or millimeters?
Use the unit available from your measurement or source reference. Values can be converted consistently during technical review, while the original measured or documented value should be preserved.
What if there is no exact dimensional match?
Recheck the measurement method, review any flange or special geometry, broaden the comparison only when appropriate, or submit the bearing and handpiece information through the identification workflow.
Does a ceramic-ball bearing with the same size automatically replace a steel-ball bearing?
No. Rolling-element material is only one part of the full specification. Application, bearing position, construction and compatibility still need review.
What if I also know the handpiece model?
Use the handpiece model lookup after narrowing the dimension candidates. Exact model, version, assembly and bearing position information can help distinguish candidates that share similar dimensions.
Technical disclaimer:
This size chart provides dimensional guidance for bearing identification. A matching external dimension can narrow possible products, but it does not automatically confirm complete interchangeability. Application-specific service documentation, dimensional inspection and compatibility confirmation should be reviewed for the particular handpiece, turbine, cartridge or assembly.
This size chart provides dimensional guidance for bearing identification. A matching external dimension can narrow possible products, but it does not automatically confirm complete interchangeability. Application-specific service documentation, dimensional inspection and compatibility confirmation should be reviewed for the particular handpiece, turbine, cartridge or assembly.
Use Dimensions to Find Candidates — Then Confirm the Application
Start with ID, OD and width, compare the complete bearing construction, then use model, bearing-number or identification data to confirm the correct replacement path.