Your cart is empty
THK Bearings
THK is a global leader in motion control and bearing solutions, offering advanced linear motion products designed for precision and reliability.
THK Bearings
THK, founded in 1971, is a leading manufacturer of linear motion systems, bearings, and precision components. Known for their Linear Motion (LM) guides, THK revolutionized machine performance and now serves industries worldwide, including robotics, medical, and automation.
About THK
Founded in 1971 in Tokyo, Japan, THK Co., Ltd. transformed the industrial sector with the invention of the Linear Motion (LM) Guide — a groundbreaking technology that enabled machines to perform smooth and highly precise linear movements. This innovation positioned THK as a global leader in motion control and precision engineering. The name “THK” embodies the company’s core principles: Toughness, High Quality, and Know-how, which remain central to its mission of delivering advanced solutions across a wide range of industries.
Today, THK operates globally, with manufacturing and distribution facilities in Asia, North America, and Europe. Its product portfolio spans a wide range of motion control systems, bearings, and precision components that power industries such as aerospace, robotics, medical equipment, automotive manufacturing, and semiconductor production. Known for its strong emphasis on research and development, THK is continuously pushing the boundaries of motion control technology, including advancements in IoT-enabled systems such as OMNIedge, which integrates data-driven monitoring into manufacturing processes.
THK’s commitment to sustainability and efficiency extends beyond its products, as the company adopts environmentally friendly practices across its global operations. By blending innovation with reliability, THK remains at the forefront of the motion control and precision engineering sectors, providing solutions that meet the evolving needs of modern industries.
THK PRODUCT
THK offers a comprehensive range of motion control systems and bearing solutions tailored to precision engineering applications. Below is a detailed overview of their key product categories:
| Category | Description | Part Numbers |
| Linear Motion (LM) Guides | Track rollers designed for motion systems requiring low friction and high durability, are used in conveyors and automation. | SHS, HSR, SSR, HRW, RS |
| Ball Screws | High-efficiency components are designed to convert rotational motion into linear motion. Ideal for CNC machines, actuators, and robotics. | BTK, BIF, BNS, BNF, BLK |
| Ball Splines | Enable torque transfer and linear motion simultaneously. Commonly used in robotics and industrial automation systems. | LBS, LBF, LBKH |
| Cross-Roller Rings | Compact and rigid rotational bearings for applications requiring high precision and load capacity, such as robotics and precision instruments. | RB, RE, RU, RA |
| Electric Actuators | Integrated motion units that combine LM guides and ball screws, provide compact, high-performance solutions for automation and robotics. | KR, SKR, GL, SL |
| Linear Motor Actuators | High-speed actuators powered by linear motors, ideal for applications requiring precise and fast linear motion, such as semiconductor equipment. | Type GL, Type SKR |
| Cam Followers | Track rollers designed for motion systems requiring low friction and high durability, are used in conveyors and automation. | CF, CFT, CR, CRC |
| Roller Followers | Cylindrical bearings for heavy loads and high-speed applications in industrial equipment. | NAST, NART, NURT |
| LM Stroke | Compact linear bearings for short-stroke operations, suitable for compact machinery and precision instruments. | ST, LST |
| Slide Pack and Rails | High-performance sliding mechanisms provide smooth motion in applications such as cabinets, machinery enclosures, and light-duty automation. | FBL, FBW |
| IoT Solutions: OMNIedge | An IoT-based system for monitoring bearing performance in real-time. Ideal for predictive maintenance and enhancing manufacturing efficiency. | OMNIedge-enabled systems |
THK Key Product Offerings (LM Guide pioneers)
A machine’s moving parts are considered rolling, linear, or a combination of both.
Rolling bearings were developed over 100 years ago and rolling contact became the standard for industry. This development was essential to the Industrial Revolution. Linear motion came many years later and is considered as important or more so in the evolution of motion control.
THK solved the problem of linear motion, previously considered too difficult. THK applied its unique technological capabilities, and in 1972, it became the first company in the world to develop and commercialize the Linear Motion (LM) Guide.
THK linear motion systems made for rapid improvements in the accuracy, speed, and labor-saving potential of advanced mechatronic instruments. With THK’s LM Guides, machine tools and industrial robots became ultra-precise. THK’s LM guides are widely specified in semiconductor manufacturing equipment and operate in submicron units. THK LM guides are specified for use in liquid crystal manufacturing lines, railway carriages, assistive vehicles, medical equipment, skyscrapers, and amusement devices.
Other THK Linear Motion Products
THK also manufactures the following linear products:
LM GuideBall Spline, Spline Nut Linear Bushing, LM Stroke Precision Linear Pack Cross-Roller Guide, Cross-Roller Table Linear Ball Slide, LM Roller, Flat Roller, Slide Pack Slide Rail.
THK Linear LM Guides and other THK products are available from stock from Distributor warehouses. For assistance contact Pacific International Bearing Sales at [email protected].
Bearings
Filters
Show all itemsBore Diameter (d)
Outside Diameter (D)
Width (B)
Contact Angle
Bearing Arrangement
Brand
Precision
Ring Material
Ball Material
Preload
Dynamic Load(Cr)
Static Load(C0r)
Speed Rating Grease
Speed Rating Oil
Closure
Radial Clearance
Flanged
Lubrication
Inner Ring Bore (d)
Outer Ring O.D. (D)
Outer Ring Bore (d1)
Inner Ring O.D. (D1)
Height (H)
Radius (rs)
Load Rating (Ca)
Load Rating (Coa)
Max Speed Greasex100
Max Speed Oil x100
Cage Material
Washer Material
Dynamic Load Cap (C)
Static Load Cap (C0)
Note
(D) Roller Diameter
(B) Roller Width
(SD) Stud Diameter
(SL) Stud Length
Bearing Dyn. Cap.
(d) Inside Diameter
Length (L)
Under Roller Diameter (Fw)
Width (C)
Width Inner Ring (B1)
Total Length (l2)
Raceway Inner Ring F
Outer Eye Diameter
Dynamic Load AxialCA
Width Total (T)
Height (T)
Static Load Axial ca
Speed Limit (RPM)
(TL) Thread Length
F
A
G
Reference Speed
Dynamic CapacityLBF
Series
L1
L2
Thread Direction
Thread Type
Please enter at least 3 characters
Swipe to view more table
Bore (d)
O.D. (D)
Width (B)
Closure
Product
Files
Price
Product Added to Cart and Back Orders
Product Added to Back Orders
15 items added to cart, can be ordered and shipped today.
Within 24 hours, our sales team will contact you about the 10 Back Ordered products.
Feel free to contact us for more info – 1-800-228-8895
PIB Sales will contact you within 24 hours regarding your 25 Back Ordered items