THK | Medical Devices

In medical device applications, precision and reliability aren't just performance metrics — they are patient safety requirements. THK's linear motion components play a vital role in a wide range of medical equipment, from diagnostic imaging systems and laboratory automation to surgical robots, infusion pumps, and prosthetic devices. The smooth, accurate, and consistent motion that THK's LM Guides, Ball Screws, and cross-roller rings provide is essential in environments where even the smallest deviation can affect the accuracy of a diagnosis or the outcome of a procedure. THK's components are available in configurations suited for cleanroom and sterile environments, with options for corrosion-resistant materials, low-outgassing lubricants, and compact form factors that meet the space constraints of modern medical device design. As medical technology advances — with devices becoming more precise, more automated, and more integrated into clinical workflows — the demand for motion components that can reliably support that evolution continues to grow. THK's engineering expertise and commitment to quality make it a trusted supplier for medical device manufacturers around the world.

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Ball Screw

The Ball Screw is a high-efficiency feed screw with the ball making a rolling motion between the screw axis and the nut. Compared with a conventional sliding screw, this product has drive torque of one-third or less, making it most suitable for saving drive motor power.

Ball Spline

The Ball Spline is a rolling guide spline bearing. This is an innovative product with a ball rolling on a groove connected to the shaft, realizing allowable loads greater than with linear bushing and enabling torque transmission while making linear movements.

Cam Follower

The Cam Follower is a compact bearing with a high-rigidity shaft and a built-in needle bearing. Most suitable as a guide roller for cam mechanisms and linear motion of automated machines and dedicated machines.

Cross Roller Guide

The Cross Roller Guide is a limited stroke linear guide that has precision rollers orthogonalized alternately. This product provides rigid yet supple linear motion and is particularly suitable for linear guidance where high rigidity and supple movement is demanded.

Cross Roller Ring

With the Cross-Roller Ring, cylindrical rollers are arranged crosswise, with each roller perpendicular to the adjacent roller, in a 90゜V groove, separated from each other by a spacer retainer. This design allows just single bearing to receive loads in all directions including, radial, axial and moment loads. Since the Cross-Roller Ring achieves high rigidity despite the minimum possible dimensions of the inner and outer rings, it is optimal for applications such as joints and swiveling units of industrial robots, swiveling tables of machining centers, rotary units of manipulators, precision rotary tables, medical equipment, measuring instruments and IC manufacturing machines.

Linear Actuators

Actuators simplify the design and construction of systems by combining separate components, including Linear Motion Guides, drive system (ball screw, belt, or rack & pinion), and base frame, into one part.
This simplification results in a very compact design as well as significant cost savings. Actuators are a very easy way to quickly build up multi-axis systems, streamlining design time, and allowing to focus on performance instead of implementation.

Linear Motion Guide

The LM Guide (Linear Motion Guide) is our main product, incorporating a part with a linear rolling motion into practical usage for the first time in the world. It realizes the development of high-precision, high-rigidity, energy-saving, high-speed machines with long service lives.

Lubrication

An assortment of lubrication associated products is available to maintain sufficient lubrication of machines.

Roller Follower

The Roller Follower is a compact and highly rigid bearing system. It contains needle bearings and is used as a guide roller for cam discs and straight motion. Since its outer ring rotates while keeping direct contact with the mating surface, this product is thickwalled and designed to bear an impact load.

Slide Rail

Slide Rail model FBL is a thin, compact, lightweight and ultra-low price slide unit for finite motion. It has two rows of balls placed between an inner rail (made of a steel sheet roll-formed with precision) and an outer rail. The balls are evenly spaced by a cage press-molded with precision, thus eliminating friction between balls and achieving a smooth slide mechanism.