LME SERIES

THK’s LME Series Linear Bushings represent the European standard cylindrical design, engineered to deliver exceptional precision and durability in demanding linear motion applications. These compact, self-aligning ball bushings feature a unique cylindrical outer sleeve construction that conforms to ISO standards, ensuring seamless integration with European machinery and equipment. The series incorporates THK’s advanced ball retainer technology, which prevents ball-to-ball contact and maintains optimal ball circulation even during high-speed operation. With precision-ground raceways and optimized ball groove geometry, the LME Series achieves remarkably smooth motion characteristics while minimizing friction and wear.

Technical specifications reveal several critical advantages. The bushings maintain strict dimensional tolerances of ISO H6 for the outer diameter and g6 for the bore, guaranteeing precise fitment and reliable performance. A patented lip seal design effectively excludes contaminants while retaining lubrication, significantly extending service life in harsh environments. The ball complement arrangement utilizes THK’s proprietary S-shaped circuit, enabling continuous ball recirculation without the need for additional retainers or complex lubrication systems. Available in standard, adjustable, and open types, the series offers flexibility for various mounting configurations and compensation for mounting errors.

Performance characteristics demonstrate why the LME Series excels in industrial applications. The design achieves vibration damping through optimized preload adjustment capabilities, reducing noise levels to below 65 dB during operation. Load capacity ratings reach up to 1.5 times that of conventional bushings in comparable sizes, while maintaining coefficient of friction values as low as 0.001-0.003. The hardened steel construction (HRC 58-64) ensures exceptional wear resistance, with calculated service life exceeding 10,000 km under standard operating conditions. Temperature stability remains consistent across a range of -20°C to +120°C without performance degradation.

Industrial implementations showcase the series’ versatility across multiple sectors. In automotive manufacturing systems, LME bushings provide precise guidance for robotic welding arms and assembly fixtures, handling dynamic loads up to 3,500 N while maintaining positioning accuracy within ±0.01 mm. Packaging machinery utilizes the open-type variants for easy mounting on conveyor systems, where they sustain continuous operation at speeds up to 3 m/s. Semiconductor production equipment benefits from the series’ cleanroom compatibility and minimal particle generation, crucial for maintaining contamination-free environments. Medical device manufacturers employ these components in diagnostic equipment slides and positioning stages, where smooth, silent operation is essential. The series also finds extensive use in European machine tools, particularly in spindle support applications where high rigidity and thermal stability are paramount.

Material selection further enhances application suitability, with stainless steel variants available for corrosive environments and plastic models for applications requiring electrical insulation. The comprehensive size range from 6 mm to 100 mm bore diameters ensures compatibility with diverse mechanical designs, while standardized mounting dimensions simplify replacement and maintenance procedures across European industrial equipment platforms.

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Model No. Main dimensions Basic load rating
Inscribed bore diameter Outer Diameter Length Dynamic rating
C
Static rating
C0
dr Tolerance D Tolerance L Tolerance
mm mm mm mm mm mm N N
LME 5 Linear Bushing
5
+0.0080
12
0–0.008
22
0–0.2
206
265
LME 8 Linear Bushing
8
+0.0080
16
0–0.008
25
0–0.2
265
402
LME 12 Linear Bushing
12
+0.0080
22
0–0.009
32
0–0.2
510
775
LME 16 Linear Bushing
16
+0.009 –0.001
26
0–0.009
36
0–0.2
775
1180
LME 20 Linear Bushing
20
+0.009 –0.001
32
0–0.011
45
0–0.2
863
1370
LME 25 Linear Bushing
25
+0.011 –0.001
40
0–0.011
58
0–0.3
980
1570
LME 30 Linear Bushing
30
+0.011 –0.001
47
0–0.011
68
0–0.3
1570
2750
LME 40 Linear Bushing
40
+0.013 –0.002
62
0–0.013
80
0–0.3
2160
4020
LME 50 Linear Bushing
50
+0.013 –0.002
75
0–0.013
100
0–0.3
3820
7940
LME 60 Linear Bushing
60
+0.013 –0.002
90
0–0.015
125
0–0.4
4710
10000
LME 80GA Linear Bushing
80
0.016
120
165
7.35
16