Precision Linear Motion Guide

The THK HSR-A is a variant of the HSR series featuring an LM block flange with tapped holes for mounting. This design allows secure installation from the top or bottom, making it ideal for applications where the mounting table cannot accommodate through holes for bolts. Like all HSR series models, it incorporates 4-way equal load distribution with 45° contact angle ball rows, high rigidity, self-adjustment capability, and high durability for accurate, smooth linear motion.

The THK HSR-B is a variant of the HSR series featuring an LM block flange with through holes for mounting . This design is specifically used in places where the table cannot have through holes for mounting bolts, as the through holes in the LM block flange allow bolts to be inserted from the top and threaded directly into the table . Like all HSR series models, it incorporates 4-way equal load distribution with 45° contact angle ball rows, high rigidity, self-adjustment capability, and high durability for accurate, smooth linear motion.

The THK HSR-C and HSR-XC are variants of the HSR series featuring LM block flanges with tapped holes for mounting . This design enables mounting from either the top or the bottom, providing flexibility in applications where the table cannot accommodate through holes for mounting bolts . Available in sizes 15 through 65 (with the XC designation typically used for larger sizes), these models retain all core HSR advantages including 4-way equal load distribution, high rigidity, self-adjustment capability, and exceptional durability.

The THK HSR-LC and HSR-XLC are long-block variants of the HSR-C series, featuring the same cross-sectional shape as the HSR-C but with an extended overall LM block length (L) for significantly greater rated load capacity . Available in sizes 15 through 65, the LC type covers sizes 15 to 55 while the XLC type is available for size 65 applications, offering basic dynamic load ratings from 14.2 kN up to 249 kN and static load ratings from 22.9 kN to 323 kN.

The THK HSR-R and HSR-XR are specialized variants of the Global Standard HSR series, designed with a narrower LM block width (W) and tapped mounting holes for applications where table width space is limited . The R type covers sizes 15 through 85, while the XR type is available for larger sizes 65 and 85, offering basic dynamic load ratings from 10.9 kN up to 304 kN and static load ratings from 15.7 kN to 355 kN.

The THK HSR-LR and HSR-XLR are long-block variants of the HSR-R series, featuring the same narrow cross-sectional shape as the HSR-R but with an extended overall LM block length (L) for significantly greater rated load capacity . The LR type covers sizes 15 through 65, while the XLR type is available for smaller sizes 8 through 12 and larger size 65 applications, offering basic dynamic load ratings from 2.1 kN up to 367 kN and static load ratings from 4 kN to 464 kN depending on the model and region.

The THK HSR-YR and HSR-XYR are specialized variants of the Global Standard HSR series, designed specifically for facing applications where two LM Guide units are used opposite each other . Traditionally, such configurations required extensive table machining and presented significant challenges in achieving desired accuracy and adjusting clearance .

The THK HSR-CA and HSR-XCA are specialized variants of the Global Standard HSR series, featuring six tapped holes on the LM block for enhanced mounting flexibility and secure attachment . The CA type covers sizes 20 through 65, while the XCA type is available for larger sizes 65 and 85, offering basic dynamic load ratings from 19.8 kN to 304 kN and static load ratings from 27.4 kN to 355 kN .

The THK HSR-CB and HSR-XCB are specialized variants of the Global Standard HSR series, featuring six through holes on the LM block for applications where the table cannot have through holes for mounting bolts . Available in sizes 20 through 85, these models offer basic dynamic load ratings from 19.8 kN to 304 kN and static load ratings from 27.4 kN to 355 kN .

The THK HSR-HA and HSR-XHA are high-capacity variants of the HSR series, featuring the same cross-sectional shape as the HSR-CA but with an extended overall LM block length (L) for significantly greater rated load capacity . Available in sizes 20 through 150, these models incorporate all the core HSR features: 4-way equal load design with 45° contact angle ball rows, ball retention plates that prevent balls from falling out when the LM rail is withdrawn (except HSR 8, 10, and 12), high rigidity, self-adjustment capability through THK's unique DF circular-arc grooves, and stainless steel options (HAM/XHAM) for corrosion-resistant applications

The THK HSR-HB and HSR-XHB are heavy-duty variants of the HSR series, featuring the same cross-sectional shape as the HSR-CB but with an extended overall LM block length (L) for significantly greater rated load capacity . Available in sizes 20 through 150, these models incorporate all the core HSR features: 4-way equal load design with 45° contact angle ball rows, ball retention plates that prevent balls from falling out when the LM rail is withdrawn (except HSR 8, 10, and 12), high rigidity, self-adjustment capability through THK's unique DF circular-arc grooves, and stainless steel options (HBM) for corrosion-resistant applications.

The THK HSR 100/120/150 HA/HB/HR series comprises large-scale variants of the Global Standard HSR model, specifically engineered for use in large-scale machine tools and building structures . These heavy-duty LM guides are available in three size classes—100, 120, and 150—offering exceptional load capacities with basic dynamic load ratings ranging from 441 to 518 kN and basic static load ratings from 540 to 728 kN, depending on the model and size . The HA and HB models feature nine tapped holes on the LM block, while the HR model is equipped with six tapped holes, providing flexible mounting options for massive industrial equipment .

The THK HRW-CA is a compact, heavy-load LM Guide from the HRW Series, featuring a flanged LM block with tapped holes that allow mounting from the top or bottom. With 45° contact angle ball rows, retainer plates for ball retention (excluding HRW 12/14LR), and DF-set self-adjusting grooves, it delivers uniform rigidity in four directions and smooth motion even under preload or mounting errors—ideal for space-saving, single-rail, or moment-loaded applications.

The THK HRW-CR is a full-ball LM guide from the Wide Rail (HRW) series, featuring an LM block with tapped holes for secure mounting from the top . This model is designed with a wide rail and low overall height — a low-center-of-gravity structure that enables single-axis use in space-constrained applications where moment loads are present and high rigidity is required . Available in sizes 17 through 50, the HRW-CR offers basic dynamic load ratings from 4.31 kN to 62.4 kN and static load ratings from 8.14 kN to 86.3 kN.

The THK HRW-LRM is a specialized variant within the Wide Rail (HRW) series, designed as a long block type with tapped holes in the LM block for secure top-mount installation . Available in compact sizes 12 and 14, this model offers basic dynamic load ratings up to 5.38 kN and basic static load ratings up to 11.4 kN . As with all HRW series models, the HRW-LRM features a wide rail with low overall height — a low-center-of-gravity structure that enables single-axis use in space-constrained applications where moment loads are present and high rigidity is required . The longer block length (L) compared to standard HRW-CR models provides greater rated load capacity while maintaining the same wide, low-profile cross-sectional design.

The THK SHW-CA series is a wide-rail caged ball LM guide featuring an LM block flange with tapped holes for mounting, allowing installation from either the top or the bottom . This series is part of THK's SHW wide-rail family, which utilizes a wide LM rail with a low center of gravity — a structure optimal for applications requiring space saving and large Mc moment rigidity . The SHW-CA combines caged ball technology with a flanged, tapped-hole block design, delivering high rigidity, low noise, long-term maintenance-free operation, and high speed in a space-efficient footprint

The THK SHW-CR series is a wide-rail caged ball LM guide featuring an LM block with tapped holes for mounting, allowing bolts to be inserted from the top only . This series belongs to THK's SHW wide-rail family, which utilizes a wide LM rail with a low center of gravity — a structure optimal for applications requiring space saving and large Mc moment rigidity . The SHW-CR combines caged ball technology with a compact, tapped-block design, delivering high rigidity, low noise, long-term maintenance-free operation, high speed, and low dust generation in a space-efficient footprint

The THK SSR-XW is a specialized variant of the SSR compact radial-type caged ball LM guide, featuring an LM block with a smaller width (W) and tapped holes for mounting . This narrow design is specifically engineered for applications where space for table width is limited, allowing secure installation in tight installations . Available in sizes 15 through 35, the SSR-XW series retains all the core advantages of the SSR family: caged ball technology that eliminates ball-to-ball friction and enhances grease retention for low-noise, high-speed, long-term maintenance-free operation; a low sectional height with radial-optimized ball contact structure for superb planar running accuracy and minimal radial displacement.

The THK SSR-XV is a specialized variant of the SSR compact radial-type caged ball LM guide, featuring the same cross-sectional shape as SSR-XW but with a shorter overall LM block length (L) for applications where space along the axis of motion is extremely limited . This short-block design makes the SSR-XV an excellent space-saving option for compact machinery and installations where both table width and axial length are constrained.

The THK SSR-XTB is a specialized variant of the SSR compact radial-type caged ball LM guide, featuring an LM block flange with through holes that enable mounting from the bottom . This design is optimal for applications where through holes for mounting bolts cannot be drilled on the table, as the LM block can be securely attached from below .

The THK SSR-XSB is a specialized variant of the SSR compact radial-type caged ball LM guide, featuring a flange-type LM block with through holes for bolts mounted from below, and a shorter overall LM block length (L) compared to the SSR-XTB . This series has the same cross-sectional shape as SSR-XTB but is designed as a space-saving short block type, making it optimal for applications where through holes for mounting bolts cannot be drilled on the table and where axial space is severely limited .

The THK SR-W series is a full-ball LM guide from the compact radial-type SR family, featuring an LM block with a smaller width (W) and tapped holes for top-mount installation . This narrow-block design is specifically engineered for applications where table width space is limited, allowing secure bolt mounting directly from above. Available in sizes 15 through 55, the SR-W series offers basic dynamic load ratings from 13.8 kN to 136 kN and static load ratings from 20.5 kN to 179 kN.

The THK SR-TB is a full-ball LM guide from the compact radial-type SR family, featuring a flange-type LM block with through holes for bolts mounted from below . This series has the same height as model SR-W , making it optimal for applications where through holes for mounting bolts cannot be drilled on the table, as the LM block can be securely attached from underneath . Available in sizes 15 through 55, the SR-TB series offers basic dynamic load ratings from 13.8 kN to 136 kN and static load ratings from 20.5 kN to 179 kN.

The THK SR-V series is a space-saving type full-ball LM guide from the compact radial-type SR family, featuring an LM block with a smaller width (W) and tapped holes for top-mount installation, combined with a shorter overall LM block length (L) compared to the SR-W series . Available in sizes 15 through 35, the SR-V series offers basic dynamic load ratings from 9.1 kN to 40.9 kN and static load ratings from 11.7 kN to 46.7 kN.

The THK SR-SB is a space-saving type full-ball LM guide from the compact radial-type SR family, featuring a flange-type LM block with through holes for bolts mounted from below, combined with a shorter overall LM block length (L) compared to the SR-TB series . This series has the same cross-sectional shape as model SR-TB , making it optimal for applications where through holes for mounting bolts cannot be drilled on the table and where axial space is severely limited. Available in sizes 15 through 35, the SR-SB series offers basic dynamic load ratings from 9.1 kN to 40.9 kN and static load ratings from 11.7 kN to 46.7 kN.

The THK NR-RX and NRS-RX are super-heavy load LM guides specifically engineered for machine tool applications requiring high rigidity, vibration resistance, impact resistance, and superior damping capacity . With this type, the LM block has a smaller width (W) and tapped holes, making it ideal for use in places where the space for table width is limited . Available in sizes 25 through 100, these models offer basic dynamic load ratings from 28.4 kN to 376 kN and basic static load ratings from 52.2 kN to 737 kN.

The THK NRS-LRX and NRS-LR are super-heavy load LM guides specifically engineered for machine tool applications requiring high rigidity, vibration resistance, impact resistance, and superior damping capacity . These long-block variants share the same cross-sectional shape as models NR-RX/NRS-RX, but feature an extended overall LM block length (L), resulting in a greater rated load capacity . With this type, the LM block has a smaller width (W) and tapped holes, making it ideal for use in places where the space for table width is limited, while bolts are mounted from above.

The THK NRS-CX is a super-heavy load LM guide from the NRS series for machine tools, featuring an LM block flange with tapped holes that allow mounting from either the top or the bottom . This design is particularly useful in applications where the table cannot accommodate through holes for mounting bolts . Available in sizes 25 through 65, the NRS-CX series offers basic dynamic load ratings from 28.4 kN to 159.8 kN and basic static load ratings from 52.2 kN to 269.4 kN.

he THK NRS-LCX is a super-heavy load LM guide for machine tools, featuring an LM block flange with tapped holes that allow mounting from either the top or the bottom . This long-block variant shares the same cross-sectional shape as model NRS-CX, but has a longer overall LM block length (L), resulting in a greater rated load capacity.

The THK NRS-R series is a super-heavy load full-ball LM guide specifically engineered for machine tool applications requiring high rigidity, vibration and shock resistance, and superior damping characteristics . With this type, the LM block has a smaller width (W) and tapped holes for top-mount bolt installation, making it ideal for use in places where the space for table width is limited . Bolts are mounted from above, allowing secure installation without requiring nut access . Available in sizes 25 through 100, the NRS-R series offers basic dynamic load ratings from 28.4 kN to 376 kN and basic static load ratings from 52.2 kN to 737 kN.

The THK NRS-A series is a super-heavy load, full-ball LM guide for machine tools, featuring an LM block flange with tapped holes that allow mounting from either the top or the bottom . This flange-type slider structure offers a compact design and easy installation, with threaded holes for direct top mounting .

The THK NRS-LA is a super-heavy load, full-ball LM guide for machine tools, featuring an LM block flange with tapped holes that allow mounting from either the top or the bottom . This long-block variant shares the same cross-sectional shape as model NRS-A, but has a longer overall LM block length (L), resulting in a greater rated load capacity.

The THK NRS-B is a super-heavy load, full-ball LM guide for machine tools, featuring an LM block flange with through holes for mounting bolts . This design is specifically used in places where the table cannot have through holes for mounting bolts, as bolts are inserted from the top through the flange holes and threaded directly into the table . Available in sizes 25 through 100, the NRS-B series offers basic dynamic load ratings from 25.9 kN to 376 kN and basic static load ratings from 59.8 kN to 737 kN.

The THK NRS-LB is a super-heavy load, full-ball LM guide for machine tools, featuring an LM block flange with through holes for mounting bolts — a design specifically used in places where the table cannot have through holes for mounting bolts, as bolts are inserted from the top through the flange holes and threaded directly into the table . This long-block variant shares the same cross-sectional shape as model NRS-B, but has a longer overall LM block length (L), resulting in a greater rated load capacity.

The THK SRS-S is a short block variant of the miniature SRS series, specifically designed with an overall LM block length (L) that is less than that of model SRS-M . This series shares the same core advantages as the broader SRS family: a caged ball design with two raceways incorporated into the compact body, enabling the model to receive loads in all directions and to be used in locations where a moment is applied with a single rail.

The THK SRS-WS is a wide short block variant of the miniature SRS series, specifically designed with a longer overall LM block length (L) , a greater block width (W) , and consequently a larger rated load and permissible moment compared to model SRS-S . Despite the increased width and length, the WS series shares the same low cross-sectional height as the standard SRS series, maintaining a compact profile while offering enhanced stability for applications subject to moment loads or requiring higher rigidity.

The THK SRS-M is a standard type of the Miniature Caged Ball LM Guide SRS series . This model has a structure where two raceways are incorporated into the compact body, enabling the model to receive loads in all directions, and to be used in locations where a moment is applied with a single rail . Use of ball cages eliminates friction between balls, thus achieving high speed, low noise, acceptable running sound, long service life, and long-term maintenance-free operation . Available in sizes 5 through 25, the SRS-M series offers basic dynamic load ratings from 0.439 kN to 16.5 kN and basic static load ratings from 0.468 kN to 22.3 kN.

The THK SRS-WM is a wide standard block variant of the miniature SRS series. Compared to the standard SRS-M model, this type has a longer overall LM block length (L), a greater width (W), and consequently a larger rated load and permissible moment.

The THK SRS-N is a long block variant of the miniature SRS series. Compared to the standard SRS-M model, this type has a longer overall LM block length (L) and consequently a greater rated load and permissible moment . It retains the same cross-sectional shape as SRS-M, allowing for drop-in replacement or upgrade on existing SRS-M rails.

The THK HR Heavy-Load Type series is a high-capacity variant of the HR family, engineered for applications requiring greater load capacity while maintaining the compact, low-profile design of the standard HR series . The LM blocks can be mounted from both the top and the bottom, offering flexible installation options.

The THK HR Miniature Wide Short Block is a specialized variant within the HR family, designed with a wider LM block and a shorter overall length to optimize both moment load rigidity and axial space savings . This block type is ideal for applications requiring stable motion under moment loads—such as overhanging or cantilevered axes—where the compact footprint is critical.