SR144TiZ1N bearing overview
SR144TiZ1N is listed in the current product catalog as a high-speed dental bearing with source P/N GS-A7. The same model card shows a 3.175 mm bore, 6.35 mm outside diameter and 2.38 mm width.
Verified source data
| Model | SR144TiZ1N |
|---|---|
| Source P/N | GS-A7 |
| Product type | High-speed dental bearing |
| Bore / ID | 3.175 mm |
| Outer Diameter / OD | 6.35 mm |
| Width | 2.38 mm |
| Dimension order | ID × OD × Width |
| Precision marking | P4 |
| Source speed marking | RPM > 400000 |
The speed value above is retained as a source marking. It is not presented as a maximum, rated or guaranteed assembled-handpiece speed. P4 is retained exactly and is not converted to an ABEC class.
Confirm the exact bearing before ordering
No handpiece-brand or rotor compatibility is established by the current model card. Before requesting a quotation, compare the exact model marking, P/N, ID, OD, width, visible shield or open configuration, outer-ring profile, removed-bearing photographs and the turbine or rotor reference where available.
A shared nominal size does not prove that two bearing models are interchangeable. Use the dental bearing size chart for dimension lookup, the bearing model cross-reference for model and P/N navigation, or send the available evidence through bearing identification.
Related product guidance
Review the high-speed dental bearing guide and the SR144 bearing family guide for selection context. For sourcing assistance, contact us with the required quantity and the identification details listed above.
Specification Source and Limits
Product reference: GS-A7. Source: manufacturer product catalog supplied to DENTORQUE, page 4, panel R2C3.
The source file is titled 轴承2026产品资料.pdf. A controlled revision and publication date are not stated in the supplied catalog; the year in its filename is not an issue-date verification.
Catalog markings are source information, not an independent test report or confirmation of compatibility with a specific handpiece. Exact geometry, assembly version and operating requirements still need to be confirmed for your application.
For questions about this source, contact DENTORQUE and quote GS-A7, page 4, panel R2C3. Read our fitment evidence standard before treating a candidate as a confirmed replacement.
