SFR144TLZN 3.175×6.35×2.38mm Dental Flanged Hybrid Ceramic Ball Bearing 500,000 RPM

Product Overview

In the world of ultra high speed precision machinery, standard bearings simply cannot keep up. The SFR144TLZN flanged hybrid ceramic ball bearing is purpose?built for applications where rotational speeds exceed 400,000 RPM and failure is not an option. With an inch-series flange design, P4 (ABEC-7) precision, and advanced hybrid ceramic construction, this bearing delivers the speed, durability, and reliability required by dental turbines, surgical handpieces, and other high-performance rotating equipment.

Key Features

Unmatched Speed Capability

With a maximum rotational speed of 500,000 RPM, the SFR144TLZN is engineered for the most demanding high?speed applications. In dental turbines, this speed enables efficient, precise tooth preparation with minimal patient discomfort. The bearing supports operation at 300,000–480,000 RPM with stable performance.

Extended Service Life

Under normal operating conditions, the SFR144TLZN delivers a service life exceeding 8 months with minimal maintenance requirements. The combination of ceramic balls, Torlon cage, and precision manufacturing reduces wear, extends bearing life, and minimizes costly downtime for replacement.

Superior Corrosion Resistance

The AISI 440C stainless steel rings and Si3N4 ceramic balls are fully resistant to corrosion. The bearing withstands repeated autoclave sterilization at 120–135°C without degradation, as well as exposure to oral acidic and alkaline environments.

Secure, Reliable Mounting

The integrated flange simplifies installation and ensures positive axial location, eliminating the need for complex housing features and reducing assembly time.

Ultra-Low Friction and Quiet Operation

The ceramic balls and Torlon cage work together to minimize friction, reducing heat generation and enabling smoother, quieter operation. This is particularly valuable in dental applications where patient comfort is paramount.

Applications

The SFR144TLZN is the bearing of choice for the most demanding high?speed, high?precision applications:

Dental Turbine Handpieces

The primary application. The bearing is used in high?speed dental handpieces for cavity preparation, crown preparation, and other restorative procedures. Its 500,000 RPM speed capability and autoclave resistance make it essential for modern dental practice.

Surgical Handpieces and Medical Devices

High-speed surgical drills, orthopedic saws, and other powered surgical instruments benefit from the bearing’s precision, corrosion resistance, and ability to withstand sterilization.

Precision Instruments

Measuring equipment, optical scanners, and laboratory instruments requiring ultra-smooth, high-speed rotation.

Micro Motors and Spindles

Miniature high-speed motors and grinding spindles where space is limited but performance is critical.