ＴＨＫ List of Products and Services

The THK electric actuator Compact Series KR-RL is an LM guide actuator that employs left and right screws in the KR model. By using a single motor to perform the symmetrical "open" and "close" movements, it enables a wide range of applications such as gripping, measuring, and positioning. Additionally, its four-direction load structure allows for use in any orientation. The modular design significantly reduces the number of components in the product, streamlining procurement, delivery management, design, and assembly processes, which shortens the lead time to complete the equipment. As a result, it is utilized in various devices, including robot arm end effectors, screw tightening machines, cutting devices, and dispensers. Furthermore, the related links provide more detailed product descriptions, product catalogs, user manuals, 2D and 3D CAD files, selection materials, and a wealth of technical information. Please take a look at these as well.

• Power Transmission Equipment

The THK electric actuator Compact Series KSF (featuring a large-diameter ball screw) is an LM guide actuator based on the KR model. By increasing the diameter of the ball screw, it achieves a long stroke of up to 1500mm while maintaining the same size as conventional products, enabling a maximum speed of 2500mm/s and a maximum acceleration/deceleration of 4G, which improves productivity by approximately 40% through reduced cycle times. Additionally, with a long lifespan of 20,000km, it enhances operational efficiency and reduces the inventory of spare parts. Due to its high speed and long stroke features, it has been adopted for the automation of workpiece packing tasks previously performed by operators, resulting in reduced labor costs and shorter packing cycle times. It is also used in the nozzle operation part of sealing devices, where suppressing the vibrations of the nozzle tip with a large overhang has improved productivity. Furthermore, the related links provide more detailed product descriptions, product catalogs, operation manuals, 2D and 3D CAD files, selection materials, and a wealth of technical information. Please take a look at these as well.

• Power Transmission Equipment

The THK Electric Actuator Economy Series ET is a thin, lightweight electric turntable capable of multi-point positioning. With one-direction continuous rotation, speed control, and four-direction mounting, it can operate according to the application of the device. It transmits motor output to the rotating table with high efficiency while maintaining a low product height. It is used in rotating parts of index tables that require high precision and in the rotating mechanisms of hand parts of Cartesian multi-axis robots where reducing load on the lower axis is necessary. Additionally, the related links provide more detailed product descriptions, product catalogs, user manuals, 2D and 3D CAD files, selection materials, and a wealth of technical information. Please take a look at those as well.

• Power Transmission Equipment

The THK electric actuator Economy Series EG can securely grip workpieces by pinching or holding from the inside, depending on the shape of the mounting claw, even in postures where moments are applied. It is used in the hand parts of vertical multi-joint robots that require stable gripping under moment loads, as well as in the end effectors (hand parts) of Cartesian multi-axis robots that require actions such as pinching, gripping, and holding from the inside. Additionally, the related links provide more detailed product descriptions, product catalogs, user manuals, 2D and 3D CAD files, selection materials, and a wealth of technical information. Please take a look at those as well.

• Power Transmission Equipment

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.

• Other machine elements
• Milling machine
• Semiconductor inspection/test equipment

■Introduction of Registered Products - Linear Motion Systems (LM Guides, Ball Splines, Ball Bushings, Precision Linear Packs, Cross Roller Guides, Ball Guides, Cross Roller Tables, Linear Ball Slides, LM Rollers, Flat Rollers, Slide Packs, Slide Rails, Spline Nuts, Utility Slides) - Feed Screws (Ball Screws, Sliding Screws) - Cross Roller Rings (Cross Roller Rings, Multi-Row Angular Roller Rings) - Rotary Series (Cam Followers, Roller Followers) - Spherical Joints (Spherical Bearings, Rod Ends, Link Balls) - Electric Actuator Series - Linear Motor Actuator Series - Sile Bearings (KSL/KSH, KST) You can access the CAD download page from the related links in the THK online service. If you do not have an ID, please register for a new account (free) first.

• Other machine elements

- I would like to easily identify the model numbers I need based on usage conditions and dimensions. - I would like to create a list of model numbers for the usage conditions and dimensions I want. For those with such requests, we have prepared THK Designer. 【THK Designer Supported Products】 - LM Guides (including individual blocks, rails, and accessories) - Ball Screws (including peripheral equipment) - Electric Actuators - Ball Splines - Rotating Mechanism Parts - Cam Followers - Rotating Mechanism Parts - Roller Followers - Linear Guide Parts - Linear Bushings - Linear Guide Parts - LM Strokes - Linear Guide Parts - Cross Roller Guides - Linear Guide Parts - Cross Roller Tables - Linear Guide Parts - Precision Linear Packs - Link Mechanism Parts - Link Balls - Link Mechanism Parts - Rod Ends - Lubrication Related Products - Grease and Grease Guns Each selected product page is linked to catalogs, CAD data, reference drawings, etc. Price and delivery estimates can also be requested. By registering as a member (free), you can use the optimal product selection tool.

• Other machine elements

The THK lifespan calculation tool is a free online service. <Features> - Capable of calculating product lifespan tailored to the customer's equipment configuration (e.g., uneven load, etc.) - Main products available include LM guides, ball screws, and electric actuators - Ability to save calculation results (up to 10) and export to PDF sheets - Easy to recall results for recalculation You can access the THK technical support site, which includes the lifespan calculation tool, from the related link. If you do not have an ID, please register as a member (free).

• Other machine elements

The export eligibility determination refers to the process of assessing whether a product falls under the goods and technologies regulated by the "Foreign Exchange and Foreign Trade Act (Foreign Exchange Act)" when exporting. If you export without this determination, it will be a violation of the Foreign Exchange Act, so caution is required. THK provides an online service for customers' export customs procedures, where you can apply for an eligibility determination certificate online from the export eligibility determination page of the THK online service. Please enter the relevant page from the related link. If you do not have an ID, you can use this page by registering as a new member (free of charge).

• Other machine elements

■What is SDS SDS stands for "Safety Data Sheet," which is a document that contains information about the hazards and harmful effects of chemical substances. It is provided by businesses when transferring or supplying chemical substances and products containing chemical substances to other businesses. The following information is included: - Information about the manufacturer and supplier - Basic hazard and toxicity information - Information for safe handling THK has prepared a download page for SDS, making it easily accessible. ■Countries with Download Page - Japan - United States - United Kingdom - Italy - Germany - France - Brazil ■Notes Due to character limits, Japan, the United States, and the United Kingdom are listed under "Basic Information," while Italy, Germany, France, and Brazil are listed under "Applications/Examples." There is also a contact point for inquiries for countries not listed on the download page. The actual sheets can be found on the linked page. Please enter through the SDS button in the "Support/Inquiries" section. If you do not have an ID, you can view them after completing the free membership registration on the THK Technical Support site.

• Other machine elements

The THK catalog download is a service that allows you to view and download the latest catalogs and instruction manuals. Some discontinued products are also included in the instruction manuals. To access the THK catalog download, please enter through the viewing link. If you do not have an ID, you can use the service by registering for a new account (free of charge). We offer catalogs for THK's main products, including linear motion systems and electric actuators, as well as for seismic isolation systems, industrial robots, service robots, products for transportation fields such as automobiles, railways, and aircraft, and new field catalogs such as low-torque shaft units for vertical axis wind turbines.

• Other machine elements

We have prepared over 500 FAQs for 31 types of THK products. Our technical terminology dictionary is also well-stocked, so please take a look. Please enter the FAQ page of the THK online service from the related links. If you do not have an ID, you can view it by completing a simple membership registration (free of charge).

• Other machine elements

THK Online Service is a free online technical support service. You can access the THK Online Service through the related links. Those without an ID can use it after registering as a member (free of charge).

• Other machine elements

We have added a large size lineup to the compact series of electric actuators, retainer type "SKR."

• Actuator
• Other FA equipment

The THK electric actuator compact series KRF (full cover type) is compatible with a wide range of industries, including the electronics component industry, machine tool industry, and pharmaceuticals and food industry. Its strong rigidity helps suppress vibrations, enabling uniform painting, making it suitable for workpiece painting equipment. Additionally, by leveraging its compactness, it reduces the size of tool loss detection devices for machine tools, achieving cost reductions for the equipment. Furthermore, the related links provide a wealth of technical information, including detailed product descriptions, product catalogs, user manuals, 2D and 3D CAD files, a list of compatible control devices, selection materials, specifications, and dimension drawings. Please take a look at these as well.

• Actuator
• Other FA equipment

The THK electric actuator controller series TSC/TLC/THC is a controller that is easy to operate simply by specifying the position information, while being equipped with a wealth of features. It achieves a lower price compared to conventional controllers. All THK position controllers can be used with the common PC setup tool D-STEP or the digital operator TDO, eliminating the need to purchase new operation tools to match the controller. Additionally, a single network unit TNU can be used in conjunction with the TJU (branch unit) to connect up to 16 axes of TSC, TLC, and THC in a mixed configuration. Furthermore, the related links provide a wealth of technical information, including detailed product descriptions, product catalogs, user manuals, and 2D CAD files. Please take a look at these as well.

• Actuator
• controller

THK's electric actuator Press Series PCT/PC is used for applications such as precision pressing, workpiece press-fitting, and riveting. The PC, with our unique compact structure, allows for a shorter overall product length and minimal width, enabling space-saving and cost reduction for equipment. It is adopted in cutting devices and horizontal press-fitting devices, achieving high efficiency through smooth operation and high-precision repeat positioning. By electrifying hydraulic pneumatic cylinders, it is possible to reduce the number of components and running costs. Additionally, on the related links, we have prepared a wealth of technical information, including more detailed product descriptions, product catalogs, instruction manuals, 2D and 3D CAD files, compatible control devices, specifications, and dimensional drawings. Please take a look at this as well.

• Actuator
• Other FA equipment

The THK electric actuator multi-axis series MA (ball screw type, motor-driven) is a series of multi-axis combinations that includes brackets, cable chains, and bearing supports. In the compact series (compact and high rigidity), there are two types of combination orientations: [horizontal-wall mounted] and [horizontal-horizontal]. In the universal series (high speed, high load capacity, long stroke), three types of combinations are possible: [horizontal-wall mounted], [wall mounted-vertical (slider fixed)], and [wall mounted-vertical (base fixed)]. Additionally, on the related links, we have prepared a wealth of technical information, including more detailed product descriptions, product catalogs, user manuals, 2D CAD files, assembly instructions, compatible control devices, specifications, and dimension drawings. Please take a look at this as well.

• Actuator

The THK electric actuator Universal Series US (ball screw type, motor-driven) is optimal for transporting heavy loads and high-speed transport with a maximum load capacity of 130 kg, a maximum stroke of 1700 mm, and a maximum speed of 2200 mm/s. Additionally, it is designed for easy assembly by customers. Therefore, it is used in welding robots that require long strokes and high rigidity, as well as in cell inspection devices that require high-speed movement in the lifting section. Furthermore, the related links provide a wealth of technical information, including detailed product descriptions, product catalogs, user manuals, 2D and 3D CAD files, a list of compatible control devices, actuator combinations, selection materials, specifications, and dimensional drawings. Please take a look at these as well.

• Actuator
• Other FA equipment

This is a mechanism that combines the "LM Guide (linear motion guide)," which is adopted in various industries such as machine tools and semiconductor manufacturing equipment and has a proven track record of reliability, with dampers (damping devices). It can accommodate heavy loads of up to 3000 kgf/m² and protects valuable assets such as servers, precision equipment, and artworks from earthquakes. Additionally, it is possible to achieve seismic isolation for entire floors, such as server rooms and operation centers.

• others

The THK Electric Actuator Economy Series ES/EC is compact, affordable, and multifunctional, making it suitable for a wide range of applications. It is used as a replacement for air cylinders in mechanisms for feeding engine parts on conveyors and in the lifting devices for pharmaceutical extrusion. The electrification improves positioning control and contributes to space-saving designs by lowering the rail profile height, making the equipment lighter and more compact. Its simple structure also reduces the number of components. By adopting the QZ lubrication system for the ball screw, long-term maintenance-free operation has been achieved. Additionally, the related links provide more detailed product descriptions, product catalogs, user manuals, 2D and 3D CAD files, a list of compatible control devices, specifications, and dimensional drawings, among other technical information. Please take a look at these as well.

• Actuator
• Other FA equipment

THK's electric actuator linear motor series CCM (small coreless rod type) achieves smooth movement even at low speeds. Additionally, it employs a linear encoder, enabling high-precision positioning control. It is also used in printers that require smooth movement at low speeds for high-resolution printing. Furthermore, the related links provide more detailed product descriptions, product catalogs, user manuals, 2D and 3D CAD files, specifications, dimensional drawings, and a wealth of technical information. Please take a look at those as well.

• Actuator

The LM guide with ball retainers in the SPR/SPS series, which achieves ultra-high rigidity surpassing roller guides and low waviness comparable to static pressure guidance, is newly introduced.

• Metal bearings

The SBN type high-speed ball screw with ball retainers eliminates collisions and mutual friction between the balls, and improves the retention of lubricants by installing ball retainers between the balls. This results in reduced noise, excellent torque characteristics, and long-term maintenance-free operation. The return piece creates an ideal circulation structure that scoops the balls in the tangential direction, enhancing the strength of the circulation section and achieving a permissible DN value of 130,000. (Note: DN value = ball center diameter × revolutions per minute) The preloading method adopts an offset preload method that shifts the lead at the center of the nut. As a result, the overall length of the nut is shorter and more compact compared to the double nut type. Additionally, as an option for long-term maintenance-free operation, a lubrication device for ball screws (QZ) developed for this purpose, as well as a wiper ring that prevents foreign matter from entering the inside of the nut even in harsh environments, have been standardized.

• Assembly Machine
• Other semiconductor manufacturing equipment
• Power Transmission Equipment

The SBK type high-speed ball screw with ball retainers is a large lead ball screw designed to eliminate collisions and mutual friction between balls, thereby improving grease retention. As a result, it achieves low noise, high speed, and long-term maintenance-free operation. Furthermore, the ideal circulation structure that scoops the balls in the tangential direction (see Figure 2) enables high-speed use at a DN value of 210,000. (*DN value = ball center diameter × revolutions per minute)

• Machining Center
• Other industrial robots
• nut

The use of austenitic stainless steel for components such as rails, mounting plates, and stoppers has improved corrosion resistance. Additionally, the newly designed rails and sliders achieve a 5dB reduction in noise and higher rigidity compared to conventional products.

• Other conveying machines
• Power Transmission Equipment
• Assembly Jig

The LG type features a circular arc groove (rolling groove) with four rows, eliminating the need for a rotation stop mechanism for the outer cylinder. Additionally, compared to the same size of the linear bush LM type, the rated load is significantly improved. Therefore, replacing the linear bush with a guide ball bush allows for compactness, cost reduction, and extended lifespan of the guide unit.

• Assembly Machine
• Commercial printers
• Food Conveyor Equipment

The adoption of newly developed low to medium vacuum dedicated labyrinth end seals and low to medium vacuum grease has achieved stable rolling resistance.

• Semiconductor inspection/test equipment
• Other clean room equipment and facilities
• Other semiconductor manufacturing equipment

A special oil-free LM guide optimized for use in high vacuum environments where oil cannot be used. It utilizes a newly developed fixed lubrication S film for the rolling elements. Additionally, since no grease is used and all components are made of stainless steel, it achieves low outgassing and low dust generation.

• Oxidation/Diffusion Device
• Ion implantation equipment
• Other clean room equipment and facilities

The adoption of roller retainers prevents roller skew, resulting in low friction and smooth operation, achieving long-term maintenance-free ultra-high rigidity roller guides.

• Grinding Machine
• Machining Center
• Injection Molding Machine

The utility slide UGR can handle heavy loads with its slim body, making it suitable for a wide variety of applications such as residential and office equipment, and enabling compact device design and high flexibility in design.

• Metal bearings
• Inspection fixture
• Interior parts

Features of THK Seismic Isolation Table TSD Type 1. Instant response to shaking 2. No fixed installation required 3. Easy expansion through connection 4. Load capacity of 30 to 1200 kg 5. Maintenance-free

• Microscope
• Anti-vibration, earthquake-proof, vibration-isolating devices
• others

The SBKH type ball screw with ball retainers is a ball screw that enables high load capacity and high-speed use (up to 92 m/min). It combines the high load performance of our HBN type high-load ball screw with ball retainers and the high-speed performance of the SBK type high-speed ball screw.

• Other machine elements

The SDA shape is a compact ball screw with a ball retainer that employs an end cap circulation method.

• Other machine elements

The ball is held in a cage with a spherical ball holder, and the ball rolls on the rolling surface of the four-row circular arc groove of the precision ground LM rail and LM block.

• Other machine elements

The SBN type high-speed ball screw with ball retainers eliminates collisions and mutual friction between the balls, and improves the retention of lubricants by installing ball retainers between the balls. This has resulted in reduced noise, excellent torque characteristics, and long-term maintenance-free operation.

• nut

The balls roll on the precision-ground rolling surfaces of the four-row LM rail and LM block, and the ball rows are circulated by the ball retainer and the end plate incorporated in the LM block. Each ball row is arranged at a contact angle of 45° to ensure a constant equivalent load in four directions (radial, reverse radial, and lateral) acting on the LM block, allowing for use in any posture while applying a well-balanced preload. This maintains a consistently low friction coefficient while enhancing rigidity in all four directions. With a low cross-sectional height and a high-rigidity design of the LM block, high-precision and stable linear motion can be achieved.

• Other FA equipment
• Other machine elements

The balls roll on the four-row rolling surfaces that are precisely ground on the LM rail and LM block, and the ball rows are circulated by the ball retainer and the end plate incorporated in the LM block. The adoption of this ball retainer enables a wide, high-rigidity LM guide that is low-noise, maintenance-free for a long period, and offers excellent high-speed performance.

• Other machine elements

The LM guide SRS type with ball retainers features a structure that incorporates two rows of rolling surfaces within a compact body, allowing it to bear loads in all directions. It can be used in space-constrained areas and locations where moments are applied, all with a single axis. Furthermore, the adoption of ball retainers eliminates mutual friction between the balls, resulting in excellent high-speed performance, low noise, good sound quality, long lifespan, and long-term maintenance-free operation.

• Other machine elements

The adoption of roller retainers enables low friction and smooth operation, achieving long-term maintenance-free performance in this ultra-high rigidity roller guide.

• Other machine elements

The balls roll on the four-row rolling surfaces that are precisely ground on the LM rail and LM block, and the ball rows are circulated by the end plate incorporated in the LM block. The R guide, which achieves high-precision arc motion, is a product developed with a new concept based on the highly proven four-direction equal load type LM guide HSR.

• Other machine elements

Based on the SRG type roller guide with a retainer, the rail has been made wider and features two rows of LM rail mounting holes, resulting in excellent mounting strength and stability. Additionally, the adoption of a roller retainer allows for low friction and smooth movement, achieving a maintenance-free experience over the long term, making it an ultra-high rigidity roller guide.

• Other machine elements

The two rows of rolling surfaces, precisely ground on the LM rail and LM block, allow the balls to roll and circulate through the ball rows, thanks to the end plate incorporated in the LM block. The LM block holds the balls in place with a retaining plate, preventing them from falling out. The two rows of balls rolling on the LM rail have an angular contact structure that makes contact with each rolling surface at a 45° angle. When assembled in the same plane (by combining two LM rails and an LM block used in the same plane), they can bear the same load in four directions (radial, reverse radial, and lateral). Moreover, due to the low profile height, a compact and stable linear guide mechanism is achieved. It is relatively easy to adjust the gaps and has excellent ability to absorb mounting errors.

• Other machine elements

The balls roll on the four-row rolling surfaces precisely ground on the LM rail and LM block, and the ball retainer and end plate integrated into the LM block circulate the ball rows. By adopting this ball retainer, mutual friction between the balls is eliminated, and the grease retention capability is improved, resulting in low noise, excellent high-speed performance, and achieving long life with long-term maintenance-free operation.

• Other machine elements

The balls roll on the precision-machined four-row rolling surfaces of the LM rail and LM block, and the ball rows are circulated by the ball retainer and the end plate incorporated in the LM block. This is an integrated LM guide that has a similar internal structure to the proven LM guide SHS type with a ball retainer, arranged in a cross shape with the backs aligned, combining two LM rails. The SCR type allows for a perpendicular linear motion system without the need for a conventional saddle, simplifying the structure of the X-Y motion and enabling compact design.

• Other machine elements