The THK LMIK L SERIES flanged type Square Flange Linear Bushing represents a significant advancement in linear motion technology, engineered to deliver exceptional precision, rigidity, and longevity in demanding industrial applications. This ball bushing linear bushing is characterized by its compact square flange design, which facilitates straightforward and secure mounting onto machine frames, worktables, and automated assemblies. The flange incorporates multiple precision-machined mounting holes, ensuring stable fixation and accurate alignment, which is critical for maintaining system integrity under high loads and dynamic conditions.
Technically, the LMIK L SERIES incorporates a meticulously designed ball recirculation system within its outer sleeve, manufactured from high-carbon chromium bearing steel (SUJ2) for superior wear resistance and durability. The balls are precision-ground to micron-level tolerances, enabling smooth, low-friction travel along compatible shafts. An integral sealing system, often comprising contact or non-contact seals, is incorporated to effectively exclude contaminants such as dust, chips, and moisture while retaining essential lubrication. This design significantly reduces maintenance intervals and prevents premature failure. The bushing’s internal structure ensures even load distribution across all balls, minimizing stress concentrations and enabling high load capacities—both radial and moment loads—without compromising performance.
Performance advantages are substantial and multifaceted. The rigid square flange design provides excellent resistance to torque and tilting moments, enhancing the overall stability of the linear motion system. This results in improved positional accuracy and repeatability, which is paramount for precision tasks. The low coefficient of friction inherent in the ball-to-track interface allows for high-speed operation with minimal heat generation, contributing to energy efficiency and consistent performance over extended periods. Furthermore, the optimized recirculation geometry minimizes noise and vibration, leading to quieter machine operation—a critical benefit in noise-sensitive environments like automotive test facilities or medical device manufacturing.
Typical applications for the THK LMIK L SERIES are diverse, spanning numerous high-performance sectors. In industrial machinery, these bushings are integral to CNC machining centers, where they guide tool carriers and worktables with high precision and rigidity, directly impacting machining accuracy and surface finish quality. Within automotive manufacturing systems, they are employed in robotic welding arms, automated assembly pallets, and precision testing equipment, where reliability under high cyclic loads and environmental contaminants is non-negotiable. For precision equipment, the series finds use in semiconductor fabrication tools, optical positioning stages, and medical diagnostic devices, where smooth, precise, and backlash-free motion is essential for achieving micron-level accuracies. The robust construction and high-performance characteristics make the LMIK L SERIES a preferred component for engineers designing systems that demand reliability, precision, and long-term operational consistency.
| Model No. | Main dimensions | Basic load rating | ||||||||
| Inscribed bore diameter | Outer diameter | Length | Flange diameter | Dynamic rating C |
Static rating C0 |
|||||
dr |
Tolerance | D |
Tolerance | L | Tolerance | D1 | Tolerance | |||
| mm | mm | mm | mm | mm | mm | mm | mm | N | N | |
16 |
— |
28 |
0-0.016 |
70 |
±0.3 |
48 |
0-0.2 |
1230 |
2350 |
|
20 |
— |
32 |
0-0.019 |
80 |
±0.3 |
54 |
0-0.2 |
1400 |
2750 |
|
25 |
— |
40 |
0-0.019 |
112 |
±0.3 |
62 |
0-0.2 |
1560 |
3140 |
|
6 |
— |
12 |
0-0.013 |
35 |
±0.3 |
28 |
0-0.2 |
324 |
529 |
|
8 |
— |
15 |
0-0.013 |
45 |
±0.3 |
32 |
0-0.2 |
431 |
784 |
|
10 |
— |
19 |
0-0.016 |
55 |
±0.3 |
39 |
0-0.2 |
588 |
1100 |
|
12 |
— |
21 |
0-0.016 |
57 |
±0.3 |
42 |
0-0.2 |
657 |
1200 |
|
13 |
— |
23 |
0-0.016 |
61 |
±0.3 |
43 |
0-0.2 |
814 |
1570 |
|