SR144TLZWN bearing overview
SR144TLZWN is listed in the current product catalog as a high-speed dental bearing with source P/N GS-B1. The same model card shows a 3.175 mm bore, 6.35 mm outside diameter and 2.78 mm width.
Verified source data
| Model | SR144TLZWN |
|---|---|
| Source P/N | GS-B1 |
| 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 retained in the evidence record but is not split into component attributes without labeled component-level evidence.
Width and identity check
The verified width for GS-B1 is 2.78 mm. Do not select this bearing from bore and outside diameter alone: another SR144-family bearing may share the 3.175 mm ID and 6.35 mm OD while using a different width or construction. Compare the exact model marking, P/N, ID, OD, width, visible face configuration, outer-ring profile and removed-bearing photographs.
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 H&Q with the required quantity and identification details.
