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 H&Q with the required quantity and the identification details listed above.
