Ball recirculating guides
Precision Linear Guides and Carriages for Every Industrial Requirement
AirTac Linear Guides and Carriages: Reliability and Cost-effectiveness for INDUSTRIAL AUTOMATION
The AirTac linear guides and their corresponding carriages are designed to ensure consistent smoothness, precision, and reliability in industrial automation applications. Thanks to their robust construction and optimized sliding technology, they reduce friction and wear, ensuring a long operational life with minimal maintenance.
Featuring an excellent quality-price ratio, AirTac guides and carriages are ideal for assembly machines, material handling systems, light automation systems, and numerous other industrial applications, offering a high-performance and cost-effective solution for every requirement.
THK Linear Guides and Carriages: Precision, Durability, and Advanced Technology
The THK linear guides and their corresponding carriages represent the ideal solution for industrial applications requiring high precision, reliability, and long service life. Thanks to caged ball and roller recirculation technology (“caged ball” and “caged roller”), they offer smooth and silent movement, reducing friction, wear, and maintenance requirements.
Designed to withstand high loads and ensure consistent movement even under demanding conditions, THK guides and carriages ensure stable performance and a superior operational life. The quality of materials and THK technological innovation make them the perfect choice for machine tools, automation systems, robotics, and numerous other precision applications.
HSR Series
Ball Recirculation Technology
This is THK's original guide, and it was the first four-way ball recirculation guide introduced to the market. Due to the track geometry and unique support, the balls do not fall out when the carriage is removed from the guide. The balls roll on four precision-ground raceways machined into the LM rail and within the carriage, where the recirculation end caps, integrated into the LM carriage, facilitate ball recirculation.
Each row of balls is positioned at a 45° contact angle, ensuring that the rated loads applied to the LM carriage are uniform in all four directions (radial, reverse radial, and lateral), thus allowing the LM guide to be used in any orientation. Furthermore, the LM carriage can receive a well-balanced preload, which increases rigidity in all four directions while maintaining a low and constant friction coefficient.
HSV Series
Ball Recirculation Technology
This is THK's original guide, and it was the first four-way ball recirculation guide introduced to the market. Due to the track geometry and unique support, the balls do not fall out when the carriage is removed from the guide. The balls roll on four precision-ground raceways machined into the LM rail and within the carriage, where the recirculation end caps, integrated into the LM carriage, facilitate ball recirculation.
The HSV series inherits the most significant characteristics of the renowned HSR series. Similarly, these four-way ball recirculation carriages run on high-precision ground guides, feature a ball retention system, and their recirculation end cap structure ensures smooth and quiet movement.
Moreover, each row of balls is positioned at a 45° contact angle, which effectively equalizes the rated loads applied to the carriage in all four directions (radial, inverse radial, and lateral), allowing the guide to be used in any orientation. Their design characteristic provides the guide with a significant ability to compensate for installation misalignments that could affect stroke precision.
As for the HSV carriage, its compact design enables high precision and smooth movement. Furthermore, a well-balanced preload enhances its rigidity in all four directions while maintaining a constant and low friction coefficient. Its compactness makes the HSV guide an ideal solution for applications where limited mounting space is a critical factor.
Finally, the absence of differential slip – even under preload or high partial loads – ensures fluid motion, making the guide particularly wear-resistant and suitable for extended operating cycles.
HCR Series
Ball Recirculation Technology
Featuring a structure virtually identical to that of the well-established HSR guide model, and offering equal load capacity in all four directions, this circular guide is a newly developed product that enables highly precise circular motion.
Multiple carriages can move independently on the same rail. By strategically placing them at load points, an efficient structural design can be achieved. This model enables highly precise, backlash-free circular motion, distinguishing it from sliding guides or roller guides. Assembly is straightforward, requiring only the mounting of the rail and carriages with screws.
It enables circular motion even on diameters of 5 m or larger, which is not feasible with conventional bearings. Furthermore, utilizing this model simplifies the assembly, disassembly, and reassembly of circularly moving structures.
This model is capable of accommodating loads in all directions due to its configuration, which is virtually identical to that of the HSR model.
HRW Series
Ball Recirculation Technology
This is a low-profile guide, beneficial for applications requiring the support of significant moments on the carriage.
Due to the track geometry and unique support, the balls do not fall out when the carriage is removed from the guide. The balls roll on four precision-ground raceways machined into the LM rail and within the carriage, where the recirculation end caps, integrated into the LM carriage, facilitate ball recirculation.
Each row of balls is positioned at a 45° contact angle, ensuring that the rated loads applied to the LM carriage are uniform in all four directions (radial, reverse radial, and lateral), thus allowing the LM guide to be used in any orientation. Furthermore, the LM carriage can receive a well-balanced preload, which increases rigidity in all four directions while maintaining a low and constant friction coefficient.
HR Series
Ball Recirculation Technology
The HR guide is a newly developed product that enables highly precise circular motion.
Multiple carriages can move independently on the same rail. By strategically placing them at load points, an efficient structural design can be achieved. This model enables highly precise, backlash-free circular motion, distinguishing it from sliding guides or roller guides. Assembly is straightforward, requiring only the mounting of the rail and carriages with screws.
It enables circular motion even on diameters of 5 m or larger, which is not feasible with conventional bearings. Furthermore, utilizing this model simplifies the assembly, disassembly, and reassembly of circularly moving structures.
This model is capable of accommodating loads in all directions due to its configuration, which is virtually identical to that of the HSR model.
NR Series
Ball Recirculation Technology
The NR guide model accommodates heavy radial loads and is a product developed for the machine tool industry.
It features extremely high load and damping capacity, as well as strong resistance to impact and vibration.
Compared to roller guides, it offers a higher static load capacity despite its more compact structure.
The unique geometry of the ball raceways allows this guide to better withstand radial loads compared to lateral loads.
HDR Series
Ball Recirculation Technology
Ideal for single-rail applications, the HDR model features a rigid design suitable for systems engineered with a single LM rail. This enables single-axis linear systems to be more compact and lightweight.
It incorporates a ball contact structure with high rigidity in the Mc direction, facilitating single-axis applications even when a moment is applied in that direction. The ball raceways of the HDR model are positioned on the sides of the LM rail, making it difficult for foreign matter to accumulate. For enhanced product effectiveness, cover plates can also be installed, further improving contamination protection performance.
The HDR model features a range of interchangeable LM blocks and rails that can be freely combined, provided they are of the same size.
HRX Series
Ball Recirculation Technology
The HRX is an LM guide that utilizes rollers as rolling elements for enhanced rigidity.
On the HRX, each row of rollers is arranged with a 45° contact angle, ensuring the LM block receives an equal load rating in all directions (radial, reverse radial, and lateral), thereby providing high rigidity in every direction.
The HRX range offers interchangeable products that meet specifications by freely combining LM blocks and LM rails with the same model number.
Other Models
Ball Recirculation Technology
The telescopic slide is a cost-effective linear guide with limited stroke, constructed from precision roll-formed steel sheet.
Thin, compact, and easy to install, this product is suitable for numerous applications requiring linear guides.
It is a new product specialized in handling furniture components, featuring lightweight properties and compact dimensions.
THK Linear Guides - Special Environments
THK Linear Guides - Vacuum Applications
THK Linear Guides - High-Temperature Applications
THK Linear Guides - Applications in Corrosive Environments
THK was the world's first manufacturer to introduce caged ball linear motion guides to the market.
This technology eliminates collisions between balls and allows a lubricant film to be maintained between each ball, thereby significantly extending the required lubrication intervals.
It also drastically reduces noise and increases the maximum permissible translation speeds.
SSR Series
Caged Ball Recirculation Technology
This is THK's original guide, and it was the first four-way ball recirculation guide introduced to the market. Due to the track geometry and unique support, the balls do not fall out when the carriage is removed from the guide. The balls roll on four precision-ground raceways machined into the LM rail and within the carriage, where the recirculation end caps, integrated into the LM carriage, facilitate ball recirculation.
Each row of balls is positioned at a 45° contact angle, ensuring that the rated loads applied to the LM carriage are uniform in all four directions (radial, reverse radial, and lateral), thus allowing the LM guide to be used in any orientation. Furthermore, the LM carriage can receive a well-balanced preload, which increases rigidity in all four directions while maintaining a low and constant friction coefficient.
SHS Series
Caged Ball Recirculation Technology
Thanks to the raceway geometry, caging, and special support, the balls do not fall out if the carriage is removed from the guide. The balls roll on four precision-ground raceways machined into the LM rail and within the carriage, where the recirculation end caps, integrated into the LM carriage, enable ball recirculation.
Each row of balls is positioned at a 45° contact angle, ensuring that the rated loads applied to the LM carriage are uniform in all four directions (radial, reverse radial, and lateral), thus allowing the LM guide to be used in any orientation.
Furthermore, the LM carriage can receive a well-balanced preload, increasing rigidity in all four directions while maintaining a low and constant friction coefficient.
SHW Series
Caged Ball Recirculation Technology
This model features a low profile and wide guide to withstand high moments in the transverse direction to the rail. It has a crossed 45° ball contact, providing equal load capacity in all directions.
The SHW model, featuring a wide LM rail and a low center of gravity, is optimal for applications requiring space-saving and high rigidity against moment Mc. Each row of balls operates with a 45° contact angle, ensuring that the loads applied to the LM carriage are uniform in all four directions (radial, reverse radial, and lateral), thus allowing the LM guide to be used in any orientation and for a wide range of applications.
The self-aligning capability, thanks to THK's unique face-to-face circular arc raceway configuration (DF configuration), allows for the absorption of mounting errors even with a preload, thereby achieving smooth, uniform, and highly precise linear motion.
The use of cages eliminates friction between the balls and retains lubricant, resulting in low generation of polluting micro-particles.
SPR/SPS Series
Caged Ball Recirculation Technology
This advanced LM guide achieves extremely low waviness and exceptionally high rigidity by incorporating 8 rows of raceways within the guide.
These models utilize 8 rows of raceways, small-diameter balls, and super-long blocks to achieve very low waviness and ultra-high rigidity, surpassing conventional LM guides. This approach substantially increases the number of effective balls and minimizes the amplitude of the rotating element in motion.
These new models are comparable to hydrostatic guides; ball deformation is minimized to achieve extremely high rigidity, even surpassing roller guides, thereby contributing to enhanced equipment precision.
SPR/SPS models are capable of accommodating loads in all four directions: radial, reverse radial, and lateral.
SRG/SRN Series
Caged Ball Recirculation Technology
SRG and SRN models are ultra-rigid roller guides that utilize roller cages to enable low friction, smooth motion, and achieve long-term maintenance-free operation.
These models utilize 8 rows of raceways, small-diameter balls, and super-long blocks to achieve very low waviness and ultra-high rigidity, surpassing conventional LM guides. This approach substantially increases the number of effective balls and minimizes the amplitude of the rotating element in motion.
These models achieve extremely high rigidity by employing rollers as rolling elements, which are less prone to deformation and have a total length 1.5 times greater than their diameter. Each row of balls is positioned at a 45° contact angle, ensuring the LM block receives equal load in all four directions (radial, reverse radial, and lateral), thereby guaranteeing high rigidity in every direction.
The use of roller cages eliminates friction between rollers and enhances grease retention, allowing for long-term maintenance-free operation.
SRW Series
Caged Ball Recirculation Technology
The SRW model, based on the SRG model's roller guide with cage technology, features a wider rail and two rows of mounting holes for the LM guide, achieving high mounting strength and stability.
The use of roller cages enables low friction and smooth motion. Consequently, the SRW model is an ultra-high rigidity roller guide that allows for long-term maintenance-free operation.
Due to its wide rail, which can be secured to the table using two rows of mounting bolts, its strength is significantly enhanced. Furthermore, given the wide transverse raceway spacing, the SRW model is structurally robust for momentary loads (MC moment) in the rolling direction.
SRS Series
Caged Ball Recirculation Technology
This is THK's original guide, and it was the first four-way ball recirculation guide introduced to the market. Due to the track geometry and unique support, the balls do not fall out when the carriage is removed from the guide. The balls roll on four precision-ground raceways machined into the LM rail and within the carriage, where the recirculation end caps, integrated into the LM carriage, facilitate ball recirculation.
Each row of balls is positioned at a 45° contact angle, ensuring that the rated loads applied to the LM carriage are uniform in all four directions (radial, reverse radial, and lateral), thus allowing the LM guide to be used in any orientation. Furthermore, the LM carriage can receive a well-balanced preload, which increases rigidity in all four directions while maintaining a low and constant friction coefficient.
EPF Series
Ball Recirculation Technology
Thanks to the raceway geometry, caging, and special support, the balls do not fall out if the carriage is removed from the guide. The balls roll on four precision-ground raceways machined into the LM rail and within the carriage, where the recirculation end caps, integrated into the LM carriage, enable ball recirculation.
Each row of balls is positioned at a 45° contact angle, ensuring that the rated loads applied to the LM carriage are uniform in all four directions (radial, reverse radial, and lateral), thus allowing the LM guide to be used in any orientation.
Furthermore, the LM carriage can receive a well-balanced preload, increasing rigidity in all four directions while maintaining a low and constant friction coefficient.
RSR3 Series
Ball Recirculation Technology
This model features a low profile and wide guide to withstand high moments in the transverse direction to the rail. It has a crossed 45° ball contact, providing equal load capacity in all directions.
The SHW model, featuring a wide LM rail and a low center of gravity, is optimal for applications requiring space-saving and high rigidity against moment Mc. Each row of balls operates with a 45° contact angle, ensuring that the loads applied to the LM carriage are uniform in all four directions (radial, reverse radial, and lateral), thus allowing the LM guide to be used in any orientation and for a wide range of applications.
The self-aligning capability, thanks to THK's unique face-to-face circular arc raceway configuration (DF configuration), allows for the absorption of mounting errors even with a preload, thereby achieving smooth, uniform, and highly precise linear motion.
The use of cages eliminates friction between the balls and retains lubricant, resulting in low generation of polluting micro-particles.
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