SR144TLZW bearing overview
SR144TLZW is listed in the current product catalog as a high-speed dental bearing with source P/N GS-B2. The same model card shows a 3.175 mm bore, 6.35 mm outside diameter and 2.78 mm width.
Verified source data
| Model | SR144TLZW |
|---|---|
| Source P/N | GS-B2 |
| Product type | High-speed dental bearing |
| Bore / ID | 3.175 mm |
| Outer Diameter / OD | 6.35 mm |
| Width | 2.78 mm |
| Dimension order | ID × OD × Width |
| Precision marking | P4 |
| Source speed marking | RPM > 400000 |
The speed value above is retained as a source marking, not a maximum, rated or guaranteed assembled-handpiece speed. P4 is not converted to an ABEC class. The catalog material string is not split into component attributes without labeled component-level evidence.
Width and identity check
The verified width for GS-B2 is 2.78 mm. A shared 3.175 mm bore and 6.35 mm outside diameter does not prove interchangeability with another SR144-family bearing. Confirm the exact model marking, P/N, all three dimensions, visible face configuration, outer-ring profile and removed-bearing photographs before ordering.
Use the dental bearing size chart for dimension lookup, the bearing model cross-reference for model and P/N navigation, or provide the available evidence through bearing identification. No handpiece-brand or rotor compatibility is established by the current card.
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 identification details.
Specification Source and Limits
Product reference: GS-B2. Source: manufacturer product catalog supplied to DENTORQUE, page 4, panel R3C2.
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-B2, page 4, panel R3C2. Read our fitment evidence standard before treating a candidate as a confirmed replacement.
