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/rot-end ring 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.
