W&H Handpiece Bearing Cross-Reference Guide
Check your handpiece model below to find the correct bearing kit. All dimensions in mm (ID x OD x W).
| W&H Model (Series) | Handpiece Type | Bearing Size (mm) | Ball Material | Our Part # |
|---|---|---|---|---|
| Synea TA-98 / TA-97 (Vision) | High Speed | 3.175 x 6.35 x 2.78 | Ceramic | SR144TLK |
| Synea Fusion TG-98 | High Speed | 3.175 x 6.35 x 2.78 | Ceramic / Steel | SR144TLK |
| Alegra TE-97 / TE-98 | High Speed | 3.175 x 6.35 x 2.38 | Ceramic | SR144TLZ |
| Trend TC-95 / TC-80 | High Speed | 3.175 x 6.35 x 2.78 | Steel / Ceramic | SR144TLK-C |
| Topair 795 / 798 (Legacy) | High Speed | 3.175 x 6.35 x 2.38 | Ceramic | SR144TLZ |
| Contra Angle (WA-99 / WA-56) | Low Speed | 4.00 x 7.00 x 2.00 | Steel | MR74ZZ |
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Optimized for Synea & Alegra High-Speed Performance
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Focus on Sterilization:
“W&H handpieces are known for their robust sterilization capabilities. Our replacement bearings are equipped with Torlon (Polyamide-imide) cages and high-performance grease that can withstand repeated sterilization cycles up to 135°C (275°F) without degrading. This ensures your Synea or Alegra turbine maintains peak performance even after hundreds of autoclave runs.”
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Focus on Stability:
“For the premium Synea Vision series, stability is key. We utilize ABEC-7 (P4) class tolerances to ensure perfect concentricity. This minimizes run-out and vibration, protecting the delicate chuck mechanism of your W&H turbine and ensuring a bur retention force that meets OEM standards.”
Not sure which bearing fits your W&H handpiece?
Don’t guess. Send us a photo of your turbine or the old bearing. Our technicians will identify the correct ISO part number for you within 1 hour.
FAQ for W&H
Will these bearings fit the newer W&H Synea Fusion LED handpieces?
Yes. The Synea Fusion series typically uses standard bearing sizes (often 3.175×6.35×2.78mm). However, W&H sometimes updates internal specs. We recommend checking our Cross-Reference Table or sending us a photo of your turbine rotor so we can confirm the exact bearing kit for your TG-98 or TG-97 model.
Do you offer ceramic bearings for the older W&H Trend series?
Absolutely. While the original W&H Trend series often came with steel bearings, upgrading to our Ceramic Replacement Bearings is a popular choice for repair shops. Ceramic balls provide a smoother operation and extend the life of these legacy handpieces by reducing friction and heat.
My W&H Alegra turbine is overheating. Is it the bearings?
Overheating in the head of a W&H Alegra is usually a sign of bearing failure or debris accumulation. Replacing the worn bearings with our Shielded Ceramic Kit typically resolves the issue. We also recommend checking the push-button mechanism and cleaning the air/water spray ports during the repair.
What is the warranty on your W&H compatible parts?
We offer a standard warranty on all our dental bearings against manufacturing defects. For wholesale partners and repair shops, we provide a satisfaction guarantee—if the bearings do not fit your specific W&H model as described, we will replace them or offer a full refund.