Summarized below are broad categories of THK products.

Retainer-embedded roller guides

- Ultra super rigid, difficult load, low friction
- Global standard dimensions (installation compatible)

The retainer-embedded roller guides adopt a roller retainer to prevent the introduction of skew, realizing low-friction smooth motions. They are ultra super rigid roller guides that offer long maintenance-free operation.

Ball-retainer-embedded LM guides

- Ensures long life and long-term maintenance free operation.

The ball-retainer-embedded LM guides are retained by ball retainers and circled so that they are free from mutual friction between the balls. In addition, a grease pocket is formed between the balls and retainer. This increases the grease's retention capability, ensuring long maintenance free operation.

LM guides

- Rolling linear guides available in a wide variety of types

The THK's LM guides form epoch-making motion systems that make linear motions into rolling motions. They apply the rotation theory of the "well base ball bearing," which is the easiest to use and most economical rolling bearing, to the linear motion parts. The type of contact between the rolling surface and the ball has been transformed from "rolling contact" toward "surface contact" by providing R-shaped grooves with a radius close to that of the balls on the rolling surface.

Ball spline

- Realize torque-transferable direct-acting rolling motions.

A ball spline is an epoch-making direct motion system in which the balls embedded in the spline external cylinder can convey torque while making a linear motion smoothly in the rolling groove of the precisely ground spline shaft.

High-precision ball screws

- Can offer a highly precise rolling feed mechanism.

A wide variety of high-precision ball screws are available as standard parts so that the users can select the most suitable part according to their application. Also available as a series are a line of nut-screwing ball screws which are suitable not only for conventional shaft rotation use but also for nut screwing.

Rolling ball screws

- Provide low-cost rolling lead screws.

THK's rolling ball screws are low-cost lead screws which adopt a screw shaft that is subjected to thread rolling and special surface grinding finishing instead of an expensive screw ground shaft.

Linear bushings

- Inexpensive yet highly precise direct motion systems

THK's linear bushings are direct motion systems that, used in combination with a hardened shaft, give infinite linear motions. Since their load balls and hardened shaft make point contacts, they set up linear motions at a minimum frictional resistance and offer highly precise smooth motions though their permissible load is rather low.

Cross roller rings

- A single bearing can carry loads that are put in all directions.

Since cross roller rings are arranged so that they alternate orthogonally with each other on a 90-degree V-groove-shaped rolling surface through spacer retainers; a single bearing can carry loads that are put in all directions, including radial, axial, and moment loads.

Rotary series

- Available are a series of cam and roller followers.

THK's cam and roller followers are compact and rigid bearings which, incorporate needle bearings, and are used as cam mechanisms and linear motion guide rollers, respectively.

Spherical joints

- Spherical bearing/rot-end ring ball series

THK's spherical bearings are self-aligning slide bearings for carrying heavy loads. The rot end provides play-free and extremely smooth rotational and oscillating motions. The ring balls excel in wear resistance and realize clearance-free smooth motions.

Actuators

- Actuators that make use of the LM guide technology

These are a series of actuators that combine guides, ball screws, and linear motors. THK offers a line of actuators in wide variations including one-shaft type and those which permits 2 or 3 shafts to be combined.

Units

- An orchestration of THK technologies

Units refer to tables that combine the LM guide and ball screws in an XY configuration and offer high-precision feeds. They are the results of combining THK's best technologies and include standard tables, hollow tables, and tables that automatically correct misalignments.