Dental bearings are a precision mechanical component used in dental instruments. They’re specifically designed to cope with the high rotational speeds, rigorous sterilization processes, and precise operation demands inherent in dental applications. They play a vital role in ensuring the efficiency, accuracy,and reliability of dental procedures.
Features of Dental Bearings
Dental bearings boast several distinctive features:
1.High-Speed Rotation: often above 400,000 RPM; some even up to 500,000 RPM
2.High Precision: to ensure accurate alignment during use
3.Can Endure Autoclave Sterilization Cycles
4.Noise and Vibration Reduction
5.Excellent Durability and Reliability
Classification of Dental Bearings
Dental bearings can be classified based on the following criteria.
1. Based on the Shape
1)Smooth dental bearings: Simple, seamless design offering straightforward assembly and reliable performance.
2)Flanged dental bearings: Characterized by a rim or 'flange' aiding in positioning and prevention of dislocation during operation.
3)Stepped dental bearings: Feature a 'stepped' structure to accommodate different component sizes, enhancing operational stability.
4)Unique dental bearings: Custom-designed bearings tailored to specific application requirements, featuring various modifications.
2. Based on the Seal Type
1)Open Dental Bearings: These are without seals, allowing for maximum lubricant capacity.
2)Shielded Dental Bearings: They come with either a single or double shield to prevent contamination.
3)Integral Shield Dental Bearings: These have one shield integrated into the bearing, offering a balance between protection and lubrication.
3. Based on the Speed
High-speed dental bearings:
1)Ideal for utilization in high-speed turbine handpieces
2)Bearing composition: features a single, standard shield.
3)Materials of balls: stainless steel & ceramic bearing dimensions:
3.175*6.350*2.380mm
3.175*6.350*2.779mm
3.175*7.738*3.571mm
Low-speed dental bearings:
1)Ideally suited for straight handpieces, contra-angle handpieces, micro motors, among other machinery
2)Operates at a standard rotational speed of 20,000-50,000 rpm
3)Boasts a high precision grade P5 (ABEC 5)
4. Based on the Structure
Radial Bearings: These are designed to support radial loads, or loads perpendicular to the shaft.
Angular Contact Ball Bearings: These are designed to support combined radial and axial (thrust) loads in one direction.
