High Speed SR144TiZN 3.175×6.35×2.38mm Hybrid Ceramic Miniature Ball Bearing for Dental Handpiece

Product Overview

SR144TiZN Hybrid Ceramic Dental Bearing – Precision Engineering for High-Speed Turbine Handpieces

In modern dentistry, high-speed turbine handpieces operate at extreme rotational speeds—up to 450,000 RPM—while enduring repeated sterilization cycles in autoclaves. The bearings inside these handpieces are among the most rigorously scrutinized components in the entire bearing industry, with tolerances tighter than almost any other application.The SR144TiZN Hybrid Ceramic Dental Bearing is precision-engineered to meet these exacting demands, delivering the reliability, smoothness, and longevity that dental professionals require.

Key Features:

• Hybrid Ceramic Construction
  Hybrid ceramic technology is widely considered the gold standard for high-speed dental applications.Silicon Nitride (Si3N4) ceramic balls offer exceptional wear resistance, while being approximately 40% harder and 60% lighter than steel balls.This lightweight design significantly reduces centrifugal force at speeds above 400,000 RPM, generating less vibration, lowering operating temperatures, and achieving a service life 2–3 times longer than traditional all?steel bearings.

• High Precision
  Dental bearings are manufactured to extremely tight tolerances. The SR144TiZN is rated ABEC-7 (ISO P4), ensuring that radial runout is minimized to less than 0.0025mm. ABEC-7 precision ensures ultra-smooth, low-friction performance, reduces noise and vibration, and prevents premature wear on the turbine shaft and chuck components.

• Surface Finish TiZN Technology
  The “TiZN” designation indicates an advanced surface coating or treatment on the stainless steel components. For the SR144TiZN, this surface treatment enhances corrosion resistance, reduces friction, and helps the bearing withstand repeated autoclave cycles without degradation—a critical requirement for dental bearings.
• High Temperature Resistance
  Dental bearings are exposed to constant heating and cooling cycles during autoclave sterilization. With an operating temperature range extending to +150°C (dependent on cage material), the SR144TiZN maintains dimensional stability and lubricant integrity even after repeated sterilization cycles.
• Long Life
  Under normal operating conditions, the SR144TiZN delivers a clinical service life of more than 6 months—substantially longer than standard steel bearings. This extended lifespan translates directly to reduced downtime, fewer turbine rebuilds, and lower overall maintenance costs for dental practices.
• Low Noise
  High-speed dental turbines generate significant audible noise. The SR144TiZN’s hybrid ceramic construction and precision manufacturing reduce vibration and noise levels, achieving operating noise below 70 dB—comparable to normal conversation levels—contributing to a more comfortable clinical environment.

The SR144TiZN hybrid ceramic bearing is compatible with high-speed handpieces from virtually all major dental equipment manufacturers, including:

KaVo、NSK、W&H、Sirona、Midwest、Bien-Air、Star、Castellini

Applications

• High-speed dental turbine handpieces

• Dental laboratory micromotors

• Surgical Handpieces

• Veterinary dental equipment