The THK Linear Ball Slide With Rack Model LSP SERIES represents a highly integrated linear motion solution, combining a precision linear slide mechanism with a robust rack-and-pinion drive system in a single, compact unit. Engineered for applications requiring both guided linear movement and positive rotary-to-linear power transmission, the LSP SERIES eliminates the need for separate component sourcing and complex assembly, delivering exceptional accuracy, rigidity, and operational efficiency. Its design is characterized by a high-rigidity, high-precision linear ball slide base, upon which a precisely machined rack is mounted, ensuring perfect alignment between the guiding and driving elements.
Key technical features define its superior performance. The linear guideway utilizes a recirculating ball bearing system within a rigid housing, providing smooth, low-friction motion with high load capacity in all directions—radial, reverse-radial, and lateral. The integrated rack is precision-ground from high-grade steel, offering high tooth accuracy and surface hardness for minimal backlash, quiet operation, and long service life. The system is pre-lubricated and often features sealing strips or gaskets to protect the ball tracks and rack from contaminants like dust and chips, making it suitable for harsh environments. Standardization allows for easy integration, with the rack-and-pinion system providing a reliable and direct method for converting the rotary motion of a motor (via a pinion gear) into precise linear travel of the slide block.
The performance advantages of the LSP SERIES are substantial for machine designers and builders. The unified design guarantees inherent alignment between the slide and the rack, which drastically reduces assembly time, minimizes potential alignment errors, and enhances overall system stiffness and positional accuracy. This integrated approach results in a more compact machine footprint compared to systems built from discrete components. The low-friction ball slide mechanism ensures high-speed capability and excellent motion smoothness, while the high-precision rack delivers precise positioning and repeatability. The high rigidity allows the system to withstand significant moments and loads, maintaining stability and accuracy under demanding operating conditions. This combination leads to improved machine throughput, higher product quality, and reduced maintenance requirements.
Typical applications for the THK LSP SERIES are found across industries where precise, powered linear indexing, transfer, or positioning is critical. In industrial automation and machinery, it is extensively used in automated assembly lines, pallet transfer systems, material handling equipment, and precision indexing tables. Within the automotive manufacturing sector, these units are ideal for robotic arm end-effectors, welding gun manipulators, parts transfer mechanisms, and automated inspection stations. For precision equipment, the LSP SERIES is deployed in semiconductor manufacturing apparatus, optical positioning stages, precision measuring instruments, and medical automation devices where clean, accurate, and reliable linear motion is paramount. Its robust and sealed construction makes it a dependable choice for these high-performance, mission-critical applications.
| Model No. | Slider dimensions | Base dimensions | Basic load rating | ||||
| Max. Stroke ls |
Height M ±0.25 |
Width W ±0.25 |
Length L |
Width W1 |
Dynamic rating C |
Static rating C0 |
|
| mm | mm | mm | mm | mm | N | N | |
100 |
25 |
66 |
153.8 |
38 |
882 |
1598 |
|
15 |
13 |
25 |
42 |
12.2 |
68.6 |
118 |
|
25 |
13 |
25 |
67 |
12.2 |
118 |
206 |
|
50 |
13 |
25 |
92 |
12.2 |
157 |
275 |
|
25 |
20 |
44 |
53 |
22.3 |
157 |
284 |
|
50 |
20 |
44 |
83 |
22.3 |
304 |
559 |
|
75 |
20 |
44 |
103 |
22.3 |
392 |
706 |
|
50 |
25 |
66 |
103.8 |
38 |
588 |
1069 |
|
75 |
25 |
66 |
128.8 |
38 |
735 |
1333 |
|