Let's introduce our product lines. Summarized below are broad categories of THK
products. For further information about the products, refer to our technical support site.
Retainer-embedded roller guides
Ultra super rigid, difficult load, low friction
Global standard dimensions (installation compatible)
Ball-retainer-embedded LM guides
Ensures long life and long-term maintenance free operation.
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.
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
Ball spline
Realize torque-transferable direct-acting rolling motions.
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.
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.
Rolling ball screws
Provide low-cost rolling lead screws.
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.
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
Cross roller rings
A single bearing can carry loads that are put in all directions.
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.
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.
Spherical joints
Spherical bearing/Rod End Link Ball series
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.
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
Units
An orchestration of THK technologies
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 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.
