Bearings for the Medical Industry 

There are a wide variety of medical applications, the following bearings are some of the more commonly utilized in medical devices. For our full product listing, click here.

Miniature ball bearings have an outside diameter of less than 3/8" (<9.525 mm) or are small bearings with an outside diameter less than or equal to 1/2" (≤12.7 mm) having a ratio of outside diameter to inside diameter equal to or less than two.

Instrument ball bearings are not limited to certain sizes. They are precision ball bearings that must meet two or more of the following criteria: low or uniform starting or running torque; smooth operation or vibration limitations; a definite contact angle or preload or both; high cleanliness standards.

Ball bearings can support moderate radial loads and moderate axial loads (parallel to the shaft). They can operate at high speeds. Ball bearings with shields or seals for protection can be lubricated to last for the operating life. 

Linear bushing bearings and linear way bearings incorporate several rows of re-circulating balls or rollers for low-friction and precise linear motion. Linear bushing bearings use a round shaft and linear way bearings have a rectangular-shaped track.

Sub-assemblies incorporate precision bearings and components manufactured to the most exacting specifications. AST can conduct design reviews and provide assemblies manufactured to your specifications or ours. Our highly skilled technicians can provide you with a reliable assembly at significant cost savings.

Precision in Diagnostic Imaging Systems

Diagnostic imaging systems, such as MRI machines, CT scanners, and ultrasound devices, rely on precise motion control for capturing detailed images of the human body. Bearings, particularly precision bearings like ceramic or hybrid bearings, are utilized in the gantry systems of these imaging devices to ensure smooth rotation and accurate positioning of the imaging components.

The high precision and stability provided by bearings are essential for obtaining clear and accurate diagnostic images, aiding healthcare professionals in diagnosing and treating medical conditions effectively.

Surgical Equipment and Robotics

In surgical procedures, precision and accuracy are critical for successful outcomes and patient safety. Bearings play a vital role in surgical equipment, including robotic surgical systems, laparoscopic instruments, and microsurgical devices. 

Miniature bearings with high precision and low friction properties enable the precise movement of surgical tools and robotic arms, allowing surgeons to perform complex procedures with enhanced dexterity and control. Their smooth and reliable motion helps in minimizing tissue trauma, reducing recovery times, and improving patient outcomes.

Prosthetics and Orthopedic Devices

Bearings are integral components in prosthetic limbs, orthopedic implants, and joint replacement systems, where they facilitate smooth articulation and movement.

In orthopedic devices such as knee and hip implants, bearings made of biocompatible materials like titanium or ceramic ensure durability, stability, and long-term functionality.

By providing low friction and wear-resistant properties, bearings enhance the mobility and comfort of patients with prosthetic or orthopedic devices, restoring their quality of life and mobility.

Drug Delivery Systems

Precision bearings also play a crucial role in drug delivery systems, including infusion pumps, insulin pumps, and implantable drug delivery devices. These devices rely on precise control of fluid flow and dosage accuracy to administer medications to patients safely and effectively.

Bearings with high precision and low torque characteristics ensure smooth operation and accurate dosing, minimizing the risk of over or under-medication and enhancing patient care and treatment outcomes.