It is used in a wide range of industries such as machinery, semiconductor and LCD manufacturing equipment, industrial robots, medical and welfare, transportation equipment, construction, and aerospace!
Linear guides are mechanical components that apply bearings, which were originally realized through rotational motion, to enable light and straight movement. In ISO, they are referred to as "Recirculating linear ball bearings," in JIS as "ball circulation linear bearings," and in the machine tool industry as "linear guideways." They are also known by several other names, such as "linear ball guides," and are sometimes referred to as "linear bearings" in the context of bearings for linear motion. THK Corporation calls them LM guides (Linear Motion Guides). Various information about LM guides can be found on the THK Technical Support Site. You can access it through the related links. If you do not have an ID, please register for a new account (free) first. ■ Content available on the THK Technical Support Site - Features by product model number - Product FAQs - Catalog download page (THK Catalog Center) - CAD data download page - Simple product selection - Lifetime calculation tool Additionally, there is a wealth of technical information related to LM guides.
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basic information
■Features ▢ Moves lightly without gaps By adopting a rolling guide, it moves lightly without gaps compared to a sliding guide. ▢ Infinite linear motion is possible Since the balls circulate infinitely, the stroke can be extended to the length of the rail. ▢ High allowable load The rolling surface is shaped like an R groove, resulting in "surface contact" between the balls and the rolling surface. Compared to "point contact" type linear motion system products, the allowable load is about 13 times greater. Even with a similar allowable load, it can be designed more compactly compared to "point contact" type linear motion system products. ■Product Options ▢ Measures against foreign matter contamination Options are available to address dust, chips, spatter, etc. There are also measures against foreign matter contamination from the back of the block. ▢ Measures against damage due to insufficient lubrication Lubrication devices are available that can extend the maintenance interval for lubrication. ▢ With linear encoder Products equipped with a linear encoder that enables high-precision positioning are also available.
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Applications/Examples of results
■ Examples of Applications in Industrial Fields ▢ Machine Tool Sector: Machining centers, milling machines, NC lathes, planomillers, CNC hobbers, surface grinding machines ▢ Semiconductor and LCD Manufacturing Equipment Sector: Glass edge polishing units, glass substrate transport devices, table units for probing LCD glass substrates, quartz crucible outer diameter measuring machines ▢ Industrial Robot Sector: 5-axis closed-link structure robots, welding robots, SCARA robots, dual-arm robots ▢ Medical and Welfare Sector: X-ray machines, automatic blood analysis devices, medical X-ray CT machines, electric wheelchair bathing devices, surgical support robots ▢ Transportation Equipment Sector: Single-passenger helicopters, platform doors, electric four-wheel vehicles, train auxiliary seats ▢ Architecture and Construction Sector: Building seismic control devices, seismic isolation systems for single-family homes, seismic isolation systems for buildings, shield machines ▢ Aerospace Sector: Seat slide mechanisms, aircraft rivet hole drilling machines,
Company information
THK pioneered the "rolling" of linear motion components in machines in 1972 and developed the "linear motion system." The development of this "linear motion system" has led to increased precision, speed, labor-saving, and improved efficiency in machinery, enabling energy-efficient equipment design. All of THK's technology is focused on providing greater lightness and precision to the "movement" of various mechanisms, bringing numerous innovations to the world. 【THK's Main Product Areas】 1. Mechanical Component Parts: - Development, manufacturing, and sales of LM guides, ball splines, ball screws, electric actuators, etc. 2. Mechatronics Related Products: - Precision XY stages, linear motor actuators, etc. 3. Automotive Parts: - Link balls, rod ends, etc. 4. Robotics: - Pick and place robots "PPR," transport robots "SIGNAS," service robots "SEED-Solutions" (including display robots and temperature measurement robots), etc. 5. Seismic Isolation: - Seismic isolation tables TSD, seismic isolation modules TGS.
