High-Speed 400 000 rpm Low-Noise Stainless Steel Hybrid Ceramic Ball SR144 Dental Handpiece Bearing

Product Overview

High-Performance Dental Handpiece Bearings: Precision Engineered for Reliability

For dental handpiece manufacturers, repair technicians, and distributors, the bearing is the heart of the tool’s performance. Our specialized dental handpiece bearings are meticulously engineered to deliver the precise combination of ultra-high speed capability, minimal vibration, and extended operational life that modern dental practices require. Each component is produced under controlled, clean conditions to meet the rigorous standards of the medical device industry.

Key Features:

• High Precision
  * Dental bearings must maintain extremely tight tolerances to ensure precise positioning and operation of the dental bur at high speeds. The dimensional tolerances typically exceed the ABEC-7 standard for high-speed instrument bearings.
  * High precision in the surface finish and relative roundness of the inner and outer raceways ensures consistent high-speed performance throughout the life of the dental handpiece.

• High-Speed Capability
  * These bearings operate at extremely high speeds, typically reaching 350,000 to 450,000 revolutions per minute (RPM) under an air pressure of 200-250 Kpa.

• Corrosion and Wear Resistance
  * The bearing races are usually made from special corrosion-resistant stainless steel, while the balls are often made from silicon nitride ceramic (Si3N4), which has a low coefficient of thermal expansion.
  * Silicon nitride ceramic balls offer high hardness, wear resistance, corrosion resistance, and self-lubricating properties, allowing them to operate effectively in environments with poor lubrication.
• Low Noise and Low Vibration
  * Compact integral dust cover designs and tighter tolerances help achieve lower bearing noise levels.
  * Lightweight design and self-lubricating features effectively reduce noise and vibration during operation, enhancing patient comfort.
• Heat Resistance
  * High-speed rotation and heavy loads can generate heat, so dental bur bearings are made from heat-resistant materials and designed with effective heat dissipation structures.

Applications

• High-Speed Air Turbine Handpieces
  For cavity preparation, crown work, and removing old fillings.

• Low-Speed Electric & Air-Driven Handpieces
  For polishing, finishing, and prophylaxis.

• Surgical Handpieces
  Used in implantology and oral surgery, where torque and reliability are paramount.

• Endodontic Handpieces
  For root canal procedures.