| Model | SR144TLZ1WN |
|---|---|
| Part Number | GS-B4 |
| ID×OD×width | 3.175×6.35×2.78 mm |
| Configuration | Radial |
| Cage material | Torlon (PAI) |
| Shields | Integral |
| Ball material | Si3N4 Ceramic |
| Precision | P4 |
| Speed | >400,000 RPM |
How to select this bearing
GS high-speed dental bearing series with straight outer-ring, Torlon (PAI) cage, Si3N4 Ceramic balls, Integral shield. Brother part numbers: GS-B3, GS-B5.
Specification Source and Limits
Product reference: GS-B4. Source: manufacturer product catalog supplied to DENTORQUE, page 4, panel R4C1.
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-B4, page 4, panel R4C1. Read our fitment evidence standard before treating a candidate as a confirmed replacement.

