Smooth Ceramic for Sirona / Dentsply Bearing 3.175 x 6.35 x 2.778 mm
Versatile, High-Performance Ceramic Bearings – DØ 3.175 mm x DØ 6.35 mm x B 2.778 mm
These precision-engineered ceramic bearings are manufactured by multiple top-tier suppliers and offered in various configurations, featuring different ball materials (ceramic or steel) and retainer types (Torlon®, Phenolic) to suit diverse performance requirements in dental handpieces.
Specifically designed to withstand rotational speeds exceeding 400,000 RPM and high axial/radial loads, these bearings are engineered for optimal performance in high-speed dental turbines.
Dimensions (Inner diameter x Outer diameter x Width):
- DØ 3.175 x DØ 6.35 x B 2.778 mm
*Compatible with OEM Part Numbers
- 05288500
- 05288200
- 04378600
- 02770712
- 07003000
- 06307900
Suitable for Models:
- SiroBoost
- SiroPure P Control
- SiroPure P Mini
- SiroPure P Racer
- T1 Control SN > 502 000
- T1 mini SN > 502 000
- T2 Control SN < 600 000
- T2 mini SN > 600 000
- T2 Racer
- T3 mini SN > 600 000
- T3 Racer
- T4 Racer
Engineered for high-speed, low-friction rotation and extended service life, these bearings are ideal replacements in turbine heads of air-driven handpieces. Options include hybrid ceramic variants for superior heat resistance and quieter operation.
Key Features:
✔ ABEC-7 or ABEC-9 rated precision
✔ Extended RPM range up to 400,000+
✔ Corrosion-resistant materials
✔ Reduced vibration and noise
✔ Long service life under demanding clinical conditions

