HP-HS-M1 High-Speed Bearing – S628-3TL – 3 × 7.5 × 2.5 mm
HP-HS-M1 High-Speed Bearing – S628-3TL – 3 × 7.5 × 2.5 mm
HP-HS-M1 is an independent replacement bearing for professional high-speed dental handpiece repair. It is supplied under our internal HP reference so technicians can compare it with the original bearing before ordering.
Quick Answer
HP-HS-M1 is a S628-3TL high-speed dental handpiece bearing measuring 3 × 7.5 × 2.5 mm (ID × OD × W). It uses 440C rings + Torlon polyimide cage + 440C steel balls and is rated above 400,000 RPM. Match the code, all three dimensions and construction details before ordering.
Technical Specifications
| Internal SKU | HP-HS-M1 |
|---|---|
| Bearing code | S628-3TL |
| Dimensions | 3 × 7.5 × 2.5 mm (ID × OD × W) |
| Rated speed | > 400,000 RPM |
| Material | 440C rings + Torlon polyimide cage + 440C steel balls |
| Application | High-speed dental handpiece repair |
| Net weight | 10 g |
| Packed shipping weight | 20 g |
Before Ordering
- Match the bearing code and all three dimensions with the removed bearing.
- Confirm the ball and cage materials required for the repair.
- Check shield, flange, groove and ring-width details where applicable.
- Installation and functional testing should be completed by a qualified repair technician.
English Bearing Code Reference
Use this table to read common high-speed handpiece bearing designations. The product-specific specifications above take priority whenever a code is not present or the construction differs.
| Code | Meaning |
|---|---|
| S | Material-series prefix. Refer to the product-specific Material row above for the actual ring, cage and ball materials. |
| F | Thrust flange on the outer ring. With a 2.38 mm outer-ring width, the flange is 0.60 mm wide; with a 2.78 mm outer-ring width, it is 0.80 mm wide. For a grooved outer ring (G), the flange is 0.45 mm wide. |
| 628-3 | 628-3 is the basic series used in this designation. The listed dimensions for this SKU are 3 × 7.5 × 2.5 mm (ID × OD × W). |
| K1 / K2 | Angular-contact construction. K1 indicates a separable inner ring; K2 indicates a separable outer ring. Angular-contact versions use a one-piece cage. |
| TA / TL / Ti | Cage material. TA: yellow polyimide; TL: black polyimide (Torlon); Ti: fabric-reinforced phenolic. |
| K / G | Outer-ring profile. K indicates a stepped outer diameter; G indicates a grooved outer diameter. |
| Z / Z1 | Shield configuration. Z indicates a one-sided shield; Z1 indicates an integral one-sided shield. |
| W / W02 | Width code. W means both rings are 2.78 mm wide. W02 means the outer ring is 2.38 mm and the inner ring is 2.78 mm. With no width code, both rings are 2.38 mm wide. |
| N | Ball material. N indicates Si3N4 silicon-nitride ceramic balls. With no N code, the balls are 9Cr18Mo / AISI 440C steel. |
Common Questions
What is HP-HS-M1?
HP-HS-M1 is our internal reference for a S628-3TL replacement bearing. Its listed size is 3 × 7.5 × 2.5 mm (ID × OD × W), with steel balls and a Torlon cage.
How do I confirm that this bearing will fit?
Compare the bearing code and the inner diameter, outer diameter and width with the removed bearing. Then confirm any shield, flange, groove, cage and ball-material requirements. A qualified handpiece repair technician should make the final fitment decision.
Is this an OEM bearing?
No. This is an independent third-party replacement bearing. Brand and model names, when mentioned, are used only to identify compatibility; no manufacturer affiliation or endorsement is claimed.
Compatibility notice: HP-HS-M1 is an internal reseller SKU. This is an independent third-party replacement bearing and is not manufactured, sponsored, authorized or endorsed by the handpiece manufacturer. Final fitment must be verified before installation.
International shipping quote required
Prices exclude international shipping. We will confirm the courier cost before payment and send a PayPal invoice for the products and freight.
Import duties and taxes, if applicable, are the buyer’s responsibility.
Product Information
Compatibility & Fitment
Third-party replacement part for professional dental handpiece repair. Compatibility references identify fitment only and do not indicate manufacture, sponsorship, or endorsement by the referenced brand. Please verify the handpiece model, part dimensions, and photos before ordering. Contact us if you are unsure.
Shipping & Payment
International shipping is quoted separately based on the destination, parcel weight, and courier service. Contact us by WhatsApp or email before payment. After confirmation, we will send a PayPal invoice including the products and shipping. Orders are dispatched only after full payment is received. Import duties and taxes, if any, are the buyer's responsibility.
Warranty & Returns
Please inspect the part before installation. If an item arrives damaged or does not match the confirmed order, contact us promptly with the order number, photos, and a description of the issue. Do not install or use the part. Returns require prior authorization and must follow our Refund Policy. Installed, used, modified, or customer-damaged parts may not be eligible for return, except where required by applicable law.