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Applied Load

The LM Guide is capable of receiving loads and moments in all directions whether they are generated by the mounting orientation and position, the location of the center of gravity of the moving object, the position of the thrust, the acceleration, or the cutting resistance.

Calculating an Applied Load

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Single-Axis Use

Moment Equivalence

When the space to install the LM Guide is limited, you may have to use only one LM block, or two LM blocks in close contact with each other. In such a setting, the load distribution is not uniform. As a result, an excessive load is applied in localized areas (i.e., both ends) as shown in Fig. 2. Continued use under such conditions may result in flaking in those areas, consequently shortening the service life. In such a case, calculate the actual load by multiplying the moment value by any one of the equivalent-moment factors specified in Table 1 to Table 6.

An equivalent-load equation applicable when a moment acts on an LM Guide is shown below.

P Equivalent load per LM Guide (N)
K Equivalent moment factor
M Applied moment (N･mm)
Equivalent Factor

Since the rated load is equivalent to the permissible moment, the equivalent factor to be multiplied when equalizing the MA, MB, and MC moments to the applied load per block is obtained by dividing the load ratings in the corresponding directions. With models other than 4-way equal load types, however, the load ratings in the 4 directions differ from each other. Therefore, the equivalent factor values for the MA and MC moments also differ depending on whether the direction is radial or reverse radial.

Equivalent Factors for the MA Moment
Equivalent Factors for the MB Moment
Equivalent Factors for the MC Moment
C0 Basic static load rating (radial direction) (N)
C0L Basic static load rating (reverse-radial direction) (N)
C0T Basic static load rating (lateral direction) (N)
PR Calculated load (radial direction) (N)
PL Calculated load (reverse-radial direction) (N)
PT Calculated load (lateral direction) (N)
Table 1: Equivalent Factors (Models SHS, SSR, SVR, SVS, SHW, and SRS)
Model No. Equivalent factor in the MA radial direction when one LM block is used Equivalent factor in the MA reverse-radial direction when one LM block is used Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other MB equivalent factor when one LM block is used MB equivalent factor when two LM blocks are used in close contact with each other Equivalent factor in the MC radial direction Equivalent factor in the MC reverse-radial direction
KAR1 KAL1 KAR2 KAL2 KB1 KB2 KCR KCL
SHS 15 1.38×10-1 2.69×10-2 1.38×10-1 2.69×10-2 1.50×10-1
15L 1.07×10-1 2.22×10-2 1.07×10-1 2.22×10-2 1.50×10-1
20 1.15×10-1 2.18×10-2 1.15×10-1 2.18×10-2 1.06×10-1
20L 8.85×10-2 1.79×10-2 8.85×10-2 1.79×10-2 1.06×10-1
25 9.25×10-2 1.90×10-2 9.25×10-2 1.90×10-2 9.29×10-2
25L 7.62×10-2 1.62×10-2 7.62×10-2 1.62×10-2 9.29×10-2
30 8.47×10-2 1.63×10-2 8.47×10-2 1.63×10-2 7.69×10-2
30L 6.52×10-2 1.34×10-2 6.52×10-2 1.34×10-2 7.69×10-2
35 6.95×10-2 1.43×10-2 6.95×10-2 1.43×10-2 6.29×10-2
35L 5.43×10-2 1.16×10-2 5.43×10-2 1.16×10-2 6.29×10-2
45 6.13×10-2 1.24×10-2 6.13×10-2 1.24×10-2 4.69×10-2
45L 4.79×10-2 1.02×10-2 4.79×10-2 1.02×10-2 4.69×10-2
55 4.97×10-2 1.02×10-2 4.97×10-2 1.02×10-2 4.02×10-2
55L 3.88×10-2 8.30×10-3 3.88×10-2 8.30×10-3 4.02×10-2
65 3.87×10-2 7.91×10-3 3.87×10-2 7.91×10-3 3.40×10-2
65L 3.06×10-2 6.51×10-3 3.06×10-2 6.51×10-3 3.40×10-2
SSR 15XW(XTB) 2.08×10-1 1.04×10-1 3.75×10-2 1.87×10-2 1.46×10-1 2.59×10-2 1.71×10-1 8.57×10-2
15XV(XSB) 3.19×10-1 1.60×10-1 5.03×10-2 2.51×10-2 2.20×10-1 3.41×10-2 1.71×10-1 8.57×10-2
20XW(XTB) 1.69×10-1 8.46×10-2 3.23×10-2 1.62×10-2 1.19×10-1 2.25×10-2 1.29×10-1 6.44×10-2
20XV(XSB) 2.75×10-1 1.37×10-1 4.28×10-2 2.14×10-2 1.89×10-1 2.89×10-2 1.29×10-1 6.44×10-2
25XW(XTB) 1.41×10-1 7.05×10-2 2.56×10-2 1.28×10-2 9.86×10-2 1.77×10-2 1.10×10-1 5.51×10-2
25XV(XSB) 2.15×10-1 1.08×10-1 3.40×10-2 1.70×10-2 1.48×10-1 2.31×10-2 1.10×10-1 5.51×10-2
30XW(XTB) 1.18×10-1 5.91×10-2 2.19×10-2 1.10×10-2 8.26×10-2 1.52×10-2 9.22×10-2 4.61×10-2
30XV(XSB) 1.85×10-1 9.24×10-2 4.69×10-2 2.34×10-2 1.27×10-1 3.19×10-2 9.16×10-2 4.58×10-2
35XW(XTB) 1.01×10-1 5.03×10-2 1.92×10-2 9.60×10-3 7.04×10-2 1.33×10-2 7.64×10-2 3.82×10-2
35XV(XSB) 1.58×10-1 7.91×10-2 4.04×10-2 2.02×10-2 1.09×10-1 2.75×10-2 7.59×10-2 3.80×10-2
SVR 25 1.13×10-1 7.28×10-2 2.25×10-2 1.45×10-2 7.14×10-2 1.43×10-2 9.59×10-2 6.17×10-2
25L 9.14×10-2 5.88×10-2 1.85×10-2 1.19×10-2 5.80×10-2 1.17×10-2 9.59×10-2 6.17×10-2
30 1.01×10-1 6.50×10-2 1.89×10-2 1.21×10-2 6.36×10-2 1.19×10-2 8.45×10-2 5.43×10-2
30L 7.56×10-2 4.86×10-2 1.57×10-2 1.01×10-2 4.79×10-2 1.00×10-2 8.45×10-2 5.43×10-2
35 9.19×10-2 5.91×10-2 1.68×10-2 1.08×10-2 5.77×10-2 1.06×10-2 7.08×10-2 4.55×10-2
35L 6.80×10-2 4.37×10-2 1.39×10-2 8.97×10-3 4.31×10-2 8.86×10-3 7.08×10-2 4.55×10-2
45 6.73×10-2 4.33×10-2 1.35×10-2 8.71×10-3 4.25×10-2 8.59×10-3 5.32×10-2 3.42×10-2
45L 5.40×10-2 3.47×10-2 1.10×10-2 7.09×10-3 3.41×10-2 6.97×10-3 5.30×10-2 3.41×10-2
55 5.89×10-2 3.79×10-2 1.14×10-2 7.35×10-3 3.72×10-2 7.24×10-3 4.63×10-2 2.98×10-2
55L 4.55×10-2 2.92×10-2 9.45×10-3 6.08×10-3 2.89×10-2 6.02×10-3 4.63×10-2 2.98×10-2
65 4.85×10-2 3.12×10-2 1.01×10-2 6.48×10-3 3.06×10-2 6.40×10-3 3.91×10-2 2.51×10-2
65L 3.58×10-2 2.30×10-2 7.73×10-3 4.97×10-3 2.28×10-2 4.93×10-3 3.91×10-2 2.51×10-2
SVS 25 1.09×10-1 9.14×10-2 2.17×10-2 1.82×10-2 1.00×10-1 2.00×10-2 9.95×10-2 8.35×10-2
25L 8.82×10-2 7.40×10-2 1.78×10-2 1.50×10-2 8.13×10-2 1.64×10-2 9.95×10-2 8.35×10-2
30 9.71×10-2 8.15×10-2 1.82×10-2 1.52×10-2 8.95×10-2 1.67×10-2 8.78×10-2 7.37×10-2
30L 7.29×10-2 6.11×10-2 1.51×10-2 1.27×10-2 6.72×10-2 1.39×10-2 8.78×10-2 7.37×10-2
35 8.84×10-2 7.42×10-2 1.61×10-2 1.35×10-2 8.14×10-2 1.48×10-2 7.36×10-2 6.17×10-2
35L 6.56×10-2 5.50×10-2 1.34×10-2 1.13×10-2 6.04×10-2 1.24×10-2 7.36×10-2 6.17×10-2
45 6.48×10-2 5.44×10-2 1.30×10-2 1.09×10-2 5.98×10-2 1.20×10-2 5.45×10-2 4.57×10-2
45L 5.22×10-2 4.38×10-2 1.07×10-2 8.94×10-3 4.81×10-2 9.81×10-3 5.44×10-2 4.56×10-2
55 5.67×10-2 4.76×10-2 1.10×10-2 9.24×10-3 5.23×10-2 1.01×10-2 4.78×10-2 4.01×10-2
55L 4.39×10-2 3.68×10-2 9.12×10-3 7.65×10-3 4.05×10-2 8.40×10-3 4.78×10-2 4.01×10-2
65 4.67×10-2 3.92×10-2 9.72×10-3 8.15×10-3 4.30×10-2 8.95×10-3 4.04×10-2 3.39×10-2
65L 3.46×10-2 2.90×10-2 7.46×10-3 6.26×10-3 3.19×10-2 6.88×10-3 4.04×10-2 3.39×10-2
SHW 12 2.48×10-1 4.69×10-2 2.48×10-1 4.69×10-2 1.40×10-1
12HR 1.70×10-1 3.52×10-2 1.70×10-1 3.52×10-2 1.40×10-1
14 1.92×10-1 3.80×10-2 1.92×10-1 3.80×10-2 9.93×10-2
17 1.72×10-1 3.41×10-2 1.72×10-1 3.41×10-2 6.21×10-2
21 1.59×10-1 2.95×10-2 1.59×10-1 2.95×10-2 5.57×10-2
27 1.21×10-1 2.39×10-2 1.21×10-1 2.39×10-2 4.99×10-2
35 8.15×10-2 1.64×10-2 8.15×10-2 1.64×10-2 3.02×10-2
50 6.22×10-2 1.24×10-2 6.22×10-2 1.24×10-2 2.30×10-2
SRS 5M 6.33×10‒1 9.20×10-2 6.45×10-1 9.30×10-2 3.85×10-1
5GM 6.71×10-1 9.15×10-2 6.66×10-1 9.08×10-2 3.85×10-1
5N 5.23×10-1 7.87×10-2 5.32×10-1 7.99×10-2 3.86×10-1
5GN 5.25×10-1 7.97×10-2 5.33×10-1 8.12×10-2 3.84×10-1
5WM 4.48×10‒1 7.30×10-2 4.56×10-1 7.40×10-2 1.96×10-1
5WGM 4.58×10-1 7.39×10-2 4.54×10-1 7.34×10-2 1.96×10-1
5WN 3.31×10-1 5.93×10-2 3.36×10-1 6.02×10-2 1.96×10-1
5WGN 3.31×10-1 5.97×10-2 3.35×10-1 6.05×10-2 1.96×10-1
7S 6.03×10-1 7.65×10-2 6.27×10-1 7.91×10-2 2.58×10-1
7GS 5.92×10-1 7.89×10-2 6.14×10-1 8.17×10-2 2.58×10-1
7M 4.19×10‒1 6.76×10-2 4.18×10-1 6.94×10-2 2.58×10-1
7GM 4.27×10-1 6.04×10-2 4.43×10-1 6.23×10-2 2.34×10-1
7N 2.97×10-1 5.35×10-2 3.07×10-1 5.50×10-2 2.58×10-1
7GN 3.11×10-1 5.35×10-2 3.20×10-1 5.51×10-2 2.58×10-1
7WS 4.67×10-1 6.89×10-2 4.84×10-1 7.08×10-2 1.36×10-1
7WGS 5.23×10-1 6.75×10-2 5.43×10-1 6.95×10-2 1.36×10-1
7WM 3.01×10-1 5.32×10-2 3.00×10-1 5.46×10-2 1.36×10-1
7WGM 2.83×10-1 4.87×10-2 2.93×10-1 5.02×10-2 1.24×10-1
7WN 2.19×10-1 4.16×10-2 2.24×10-1 4.28×10-2 1.36×10-1
7WGN 2.20×10-1 4.17×10-2 2.27×10-1 4.31×10-2 1.36×10-1
  • KAR1: Equivalent factor in the MA radial direction when one LM block is used
  • KAL1: Equivalent factor in the MA reverse-radial direction when one LM block is used
  • KAR2: Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other
  • KAL2: Equivalent factor in the MA reverse radial direction when two LM blocks are used in close contact with each other
  • KB1: MB equivalent factor when one LM block is used
  • KB2: MB equivalent factor when two LM blocks are used inclose contact with each other
  • KCR: MC equivalent factor in the radial direction
  • KCL: MC equivalent factor in the reverse radial direction
Table 2: Equivalent Factors (Models SRS, SCR, EPF, and HSR)
Model No. Equivalent factor in the MA radial direction when one LM block is used Equivalent factor in the MA reverse-radial direction when one LM block is used Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other MB equivalent factor when one LM block is used MB equivalent factor when two LM blocks are used in close contact with each other Equivalent factor in the MC radial direction Equivalent factor in the MC reverse-radial direction
KAR1 KAL1 KAR2 KAL2 KB1 KB2 KCR KCL
SRS 9XS 4.86×10-1 6.89×10-2 5.04×10-1 7.11×10-2 2.17×10-1
9XGS 5.37×10-1 6.77×10-2 5.57×10-1 7.00×10-2 2.17×10-1
9XM 2.95×10-1 5.27×10-2 3.06×10-1 5.43×10-2 2.17×10-1
9XGM 3.10×10-1 5.28×10-2 3.19×10-1 5.44×10-2 2.17×10-1
9XN 2.13×10-1 4.12×10-2 2.19×10-1 4.23×10-2 2.17×10-1
9XGN 2.18×10-1 4.14×10-2 2.24×10-1 4.27×10-2 2.17×10-1
9WS 4.10×10-1 5.73×10-2 4.25×10-1 5.63×10-2 1.06×10-1
9WGS 4.16×10-1 5.80×10-2 4.30×10-1 5.98×10-2 1.06×10-1
9WM 2.37×10-1 4.25×10-2 2.44×10-1 4.37×10-2 1.06×10-1
9WGM 2.41×10-1 4.80×10-2 2.41×10-1 4.13×10-2 1.06×10-1
9WN 1.74×10-1 3.35×10-2 1.78×10-1 3.44×10-2 1.06×10-1
9WGN 1.75×10-1 3.38×10-2 1.73×10-1 3.32×10-2 1.06×10-1
12S 4.55×10-1 5.60×10-2 4.55×10-1 5.60×10-2 1.52×10-1
12GS 5.04×10-1 5.51×10-2 5.04×10-1 5.51×10-2 1.52×10-1
12M 2.94×10-1 4.50×10-2 2.94×10-1 4.50×10-2 1.53×10-1
12GM 2.93×10-1 4.49×10-2 2.93×10-1 4.49×10-2 1.53×10-1
12N 1.86×10-1 3.51×10-2 1.86×10-1 3.51×10-2 1.53×10-1
12GN 1.96×10-1 3.50×10-2 1.96×10-1 3.50×10-2 1.53×10-1
12WS 3.22×10-1 5.00×10-2 3.22×10-1 5.00×10-2 7.97×10-2
12WGS 3.32×10-1 5.07×10-2 3.32×10-1 5.07×10-2 7.97×10-2
12WM 2.00×10-1 3.69×10-2 2.00×10-1 3.69×10-2 7.97×10-2
12WGM 2.07×10-1 3.64×10-2 2.07×10-1 3.64×10-2 7.96×10-2
12WN 1.44×10-1 2.83×10-2 1.44×10-1 2.83×10-2 7.97×10-2
12WGN 1.46×10-1 2.85×10-2 1.46×10-1 2.85×10-2 7.95×10-2
15S 3.56×10-1 4.38×10-2 3.56×10-1 4.38×10-2 1.41×10-1
15GS 3.37×10-1 4.57×10-2 3.37×10-1 4.57×10-2 1.41×10-1
15M 2.17×10-1 3.69×10-2 2.17×10-1 3.69×10-2 1.41×10-1
15GM 2.31×10-1 3.61×10-2 2.31×10-1 3.61×10-2 1.41×10-1
15N 1.43×10-1 2.73×10-2 1.43×10-1 2.73×10-2 1.41×10-1
15GN 1.45×10-1 2.75×10-2 1.45×10-1 2.75×10-2 1.41×10-1
15WS 2.34×10-1 3.76×10-2 2.34×10-1 3.76×10-2 4.83×10-2
15WGS 2.34×10-1 3.81×10-2 2.34×10-1 3.81×10-2 4.84×10-2
15WM 1.67×10-1 2.94×10-2 1.67×10-1 2.94×10-2 4.83×10-2
15WGM 1.63×10-1 2.93×10-2 1.63×10-1 2.93×10-2 4.83×10-2
15WN 1.13×10-1 2.27×10-2 1.13×10-1 2.27×10-2 4.83×10-2
15WGN 1.15×10-1 2.28×10-2 1.15×10-1 2.28×10-2 4.83×10-2
20M 1.80×10-1 3.30×10-2 1.86×10-1 3.41×10-2 9.34×10-2
20GM 2.10×10-1 3.88×10-2 2.10×10-1 3.87×10-2 1.03×10-1
25M 1.14×10-1 2.17×10-2 1.14×10-1 2.17×10-2 8.13×10-2
25GM 1.23×10-1 2.32×10-2 1.23×10-1 2.32×10-2 8.75×10-2
SCR 15S 1.38×10-1 2.69×10-2 1.38×10-1 -
20S 1.15×10-1 2.18×10-2 1.15×10-1 -
20 8.85×10-2 1.79×10-2 8.85×10-2 -
25 9.25×10-2 1.90×10-2 9.25×10-2 1.90×10-2 -
30 8.47×10-2 1.63×10-2 8.47×10-2 1.63×10-2 -
35 6.95×10-2 1.43×10-2 6.95×10-2 1.43×10-2 -
45 6.13×10-2 1.24×10-2 6.13×10-2 1.24×10-2 -
65 3.87×10-2 7.91×10-3 3.87×10-2 7.91×10-3 -
EPF 7M 3.55×10-1 - 3.55×10-1 - 2.86×10-1
9M 3.10×10-1 - 3.10×10-1 - 2.22×10-1
12M 2.68×10-1 - 2.68×10-1 - 1.67×10-1
15M 2.00×10-1 - 2.00×10-1 - 1.34×10-1
HSR 8XS 6.93×10-1 8.37×10-2 6.93×10-1 8.37×10-2 2.91×10-1
8X 4.42×10-1 6.80×10-2 4.42×10-1 6.80×10-2 2.91×10-1
8XL 3.07×10-1 5.58×10-2 3.07×10-1 5.58×10-2 2.91×10-1
10XS 4.70×10-1 6.49×10-2 4.70×10-1 6.49×10-2 2.30×10-1
10X 3.11×10-1 5.37×10-2 3.11×10-1 5.37×10-2 2.30×10-1
10XL 2.32×10-1 4.26×10-2 2.32×10-1 4.26×10-2 2.30×10-1
12XS 3.15×10-1 4.64×10-2 3.15×10-1 4.64×10-2 1.95×10-1
12X 2.08×10-1 3.73×10-2 2.08×10-1 3.73×10-2 1.95×10-1
12XL 1.56×10-1 2.96×10-2 1.56×10-1 2.96×10-2 1.95×10-1
15 1.66×10-1 2.98×10-2 1.66×10-1 2.98×10-2 1.57×10-1
15L 1.18×10-1 2.33×10-2 1.18×10-1 2.33×10-2 1.57×10-1
20 1.26×10-1 2.28×10-2 1.26×10-1 2.28×10-2 1.17×10-1
20L 9.88×10-2 1.92×10-2 9.88×10-2 1.92×10-2 1.17×10-1
25 1.12×10-1 2.02×10-2 1.12×10-1 2.02×10-2 9.96×10-2
25L 8.23×10-2 1.70×10-2 8.23×10-2 1.70×10-2 9.96×10-2
30 8.97×10-2 1.73×10-2 8.97×10-2 1.73×10-2 8.24×10-2
30L 7.05×10-2 1.44×10-2 7.05×10-2 1.44×10-2 8.24×10-2
35 7.85×10-2 1.56×10-2 7.85×10-2 1.56×10-2 6.69×10-2
35L 6.17×10-2 1.29×10-2 6.17×10-2 1.29×10-2 6.69×10-2
45 6.73×10-2 1.21×10-2 6.73×10-2 1.21×10-2 5.20×10-2
45L 5.22×10-2 1.01×10-2 5.22×10-2 1.01×10-2 5.20×10-2
55 5.61×10-2 1.03×10-2 5.61×10-2 1.03×10-2 4.26×10-2
55L 4.35×10-2 8.56×10-3 4.35×10-2 8.56×10-3 4.26×10-2
65 4.49×10-2 9.13×10-3 4.49×10-2 9.13×10-3 3.68×10-2
65L 3.29×10-2 7.08×10-3 3.29×10-2 7.08×10-3 3.68×10-2
85 3.49×10-2 6.94×10-3 3.49×10-2 6.94×10-3 2.78×10-2
85L 2.74×10-2 5.72×10-3 2.74×10-2 5.72×10-3 2.78×10-2
100 2.61×10-2 5.16×10-3 2.61×10-2 5.16×10-3 2.24×10-2
120 2.37×10-2 4.72×10-3 2.37×10-2 4.72×10-3 1.96×10-2
150 2.17×10-2 4.35×10-3 2.17×10-2 4.35×10-3 1.61×10-2
15M2A 1.65×10-1 2.89×10-2 1.65×10-1 2.89×10-2 1.86×10-1
20M2A 1.23×10-1 2.23×10-2 1.23×10-1 2.23×10-2 1.34×10-1
25M2A 1.10×10-1 1.98×10-2 1.10×10-1 1.98×10-2 1.14×10-1
  • KAR1: Equivalent factor in the MA radial direction when one LM block is used
  • KAL1: Equivalent factor in the MA reverse-radial direction when one LM block is used
  • KAR2: Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other
  • KAL2: Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other
  • KB1: MB equivalent factor when one LM block is used
  • KB2: MB equivalent factor when two LM blocks are used in close contact with each other
  • KCR: Equivalent factor in the MC radial direction
  • KCL: Equivalent factor in the MC reverse-radial direction
Table 3: Equivalent Factors (Models SR, NR-X, and NR)
Model No. Equivalent factor in the MA radial direction when one LM block is used Equivalent factor in the MA reverse-radial direction when one LM block is used Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other MB equivalent factor when one LM block is used MB equivalent factor when two LM blocks are used in close contact with each other Equivalent factor in the MC radial direction Equivalent factor in the MC reverse-radial direction
KAR1 KAL1 KAR2 KAL2 KB1 KB2 KCR KCL
SR 15W(TB) 2.08×10-1 1.04×10-1 3.72×10-2 1.86×10-2 1.46×10-1 2.57×10-2 1.69×10-1 8.43×10-2
15V(SB) 3.40×10-1 1.70×10-1 5.00×10-2 2.50×10-2 2.34×10-1 3.37×10-2 1.69×10-1 8.43×10-2
20W(TB) 1.71×10-1 8.56×10-2 3.23×10-2 1.61×10-2 1.20×10-1 2.24×10-2 1.28×10-1 6.40×10-2
20V(SB) 2.69×10-1 1.34×10-1 4.34×10-2 2.17×10-2 1.86×10-1 2.95×10-2 1.28×10-1 6.39×10-2
25W(TB) 1.37×10-1 6.85×10-2 2.57×10-2 1.29×10-2 9.61×10-2 1.78×10-2 1.09×10-1 5.47×10-2
25V(SB) 2.15×10-1 1.08×10-1 3.47×10-2 1.73×10-2 1.49×10-1 2.36×10-2 1.10×10-1 5.48×10-2
30W(TB) 1.14×10-1 5.71×10-2 2.21×10-2 1.10×10-2 8.01×10-2 1.54×10-2 9.16×10-2 4.58×10-2
30V(SB) 1.98×10-1 9.92×10-2 2.98×10-2 1.49×10-2 1.37×10-1 2.01×10-2 9.16×10-2 4.58×10-2
35W(TB) 1.04×10-1 5.21×10-2 1.91×10-2 9.57×10-3 7.30×10-2 1.32×10-2 7.59×10-2 3.80×10-2
35V(SB) 1.70×10-1 8.50×10-2 2.61×10-2 1.31×10-2 1.17×10-1 1.77×10-2 7.59×10-2 3.80×10-2
45W(TB) 9.11×10-2 4.56×10-2 1.69×10-2 8.44×10-3 6.38×10-2 1.17×10-2 5.67×10-2 2.83×10-2
55W(TB) 6.85×10-2 3.42×10-2 1.37×10-2 6.86×10-3 4.80×10-2 9.57×10-3 5.38×10-2 2.69×10-2
NR-X 25 1.19×10-1 7.64×10-2 2.24×10-2 1.43×10-2 7.47×10-2 1.41×10-2 9.69×10-2 6.21×10-2
25L 9.18×10-2 5.87×10-2 1.85×10-2 1.18×10-2 5.78×10-2 1.17×10-2 9.69×10-2 6.21×10-2
25SL 5.13×10-2 3.28×10-2 1.13×10-2 7.24×10-3 3.25×10-2 7.17×10-3 9.69×10-2 6.21×10-2
30 9.95×10-2 6.37×10-2 1.90×10-2 1.21×10-2 6.23×10-2 1.19×10-2 8.55×10-2 5.47×10-2
30L 7.65×10-2 4.89×10-2 1.57×10-2 1.00×10-2 4.82×10-2 9.91×10-3 8.55×10-2 5.47×10-2
30SL 4.27×10-2 2.73×10-2 9.41×10-3 6.02×10-3 2.71×10-2 5.96×10-3 8.55×10-2 5.47×10-2
35 9.08×10-2 5.81×10-2 1.69×10-2 1.08×10-2 5.67×10-2 1.06×10-2 7.17×10-2 4.59×10-2
35L 6.88×10-2 4.40×10-2 1.40×10-2 8.96×10-3 4.32×10-2 8.81×10-3 7.17×10-2 4.59×10-2
35SL 3.66×10-2 2.34×10-2 8.06×10-3 5.16×10-3 2.32×10-2 5.11×10-3 7.17×10-2 4.59×10-2
45 7.02×10-2 4.50×10-2 1.35×10-2 8.64×10-3 4.37×10-2 8.39×10-3 5.31×10-2 3.40×10-2
45L 5.25×10-2 3.36×10-2 1.11×10-2 7.11×10-3 3.31×10-2 7.05×10-3 5.31×10-2 3.40×10-2
45SL 3.20×10-2 2.05×10-2 7.10×10-3 4.54×10-3 2.03×10-2 4.50×10-3 5.31×10-2 3.40×10-2
55 5.92×10-2 3.79×10-2 1.15×10-2 7.36×10-3 3.72×10-2 7.21×10-3 4.66×10-2 2.98×10-2
55L 4.66×10-2 2.98×10-2 9.43×10-3 6.02×10-3 2.92×10-2 5.93×10-3 4.66×10-2 2.98×10-2
55SL 2.13×10-2 1.36×10-2 4.84×10-3 3.10×10-3 1.35×10-2 3.08×10-3 4.66×10-2 2.98×10-2
65 5.12×10-2 3.28×10-2 1.00×10-2 6.40×10-3 3.21×10-2 6.31×10-3 3.93×10-2 2.52×10-2
65L 3.66×10-2 2.34×10-2 7.73×10-3 4.93×10-3 2.31×10-2 4.89×10-3 3.93×10-2 2.52×10-2
65SL 2.02×10-2 1.29×10-2 4.58×10-3 2.93×10-3 1.28×10-2 2.91×10-3 3.93×10-2 2.52×10-2
NR 75 4.21×10-2 2.99×10-2 8.31×10-3 5.90×10-3 3.08×10-2 6.13×10-3 3.16×10-2 2.24×10-2
75L 3.14×10-2 2.23×10-2 6.74×10-3 4.78×10-3 2.33×10-2 5.04×10-3 3.16×10-2 2.24×10-2
85 3.70×10-2 2.62×10-2 7.31×10-3 5.19×10-3 2.71×10-2 5.40×10-3 2.80×10-2 1.99×10-2
85L 2.80×10-2 1.99×10-2 6.07×10-3 4.31×10-3 2.08×10-2 4.55×10-3 2.80×10-2 1.99×10-2
100 3.05×10-2 2.17×10-2 6.20×10-3 4.41×10-3 2.26×10-2 4.63×10-3 2.38×10-2 1.69×10-2
100L 2.74×10-2 1.95×10-2 5.46×10-3 3.87×10-3 2.00×10-2 4.00×10-3 2.38×10-2 1.69×10-2
  • KAR1: Equivalent factor in the MA radial direction when one LM block is used
  • KAL1: Equivalent factor in the MA reverse-radial direction when one LM block is used
  • KAR2: Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other
  • KAL2: Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other
  • KB1: MB equivalent factor when one LM block is used
  • KB2: MB equivalent factor when two LM blocks are used in close contact with each other
  • KCR: Equivalent factor in the MC radial direction
  • KCL: Equivalent factor in the MC reverse-radial direction
Table 4: Equivalent Factors (Models NRS-X, NRS, HRW, and RSX)
Model No. Equivalent factor in the MA radial direction when one LM block is used Equivalent factor in the MA reverse-radial direction when one LM block is used Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other MB equivalent factor when one LM block is used MB equivalent factor when two LM blocks are used in close contact with each other Equivalent factor in the MC radial direction Equivalent factor in the MC reverse-radial direction
KAR1 KAL1 KAR2 KAL2 KB1 KB2 KCR KCL
NRS-X 25 1.15×10-3 9.66×10-2 2.16×10-2 1.81×10-2 1.06×10-1 1.98×10-2 9.51×10-2 7.99×10-2
25L 8.85×10-2 7.44×10-2 1.79×10-2 1.50×10-2 8.14×10-2 1.64×10-2 9.51×10-2 7.99×10-2
25SL 4.97×10-2 4.17×10-2 1.10×10-2 9.20×10-3 4.57×10-2 1.01×10-2 9.51×10-2 7.99×10-2
30 9.58×10-2 8.05×10-2 1.83×10-2 1.53×10-2 8.81×10-2 1.68×10-2 8.4×10-2 7.05×10-2
30L 7.38×10-2 6.20×10-2 1.51×10-2 1.27×10-2 6.79×10-2 1.39×10-2 8.4×10-2 7.05×10-2
30SL 4.14×10-2 3.48×10-2 9.12×10-3 7.66×10-3 3.81×10-2 8.38×10-3 8.4×10-2 7.05×10-2
35 8.73×10-2 7.33×10-2 1.62×10-2 1.36×10-2 8.03×10-2 1.49×10-2 7.04×10-2 5.91×10-2
35L 6.63×10-2 5.57×10-2 1.35×10-2 1.13×10-2 6.10×10-2 1.24×10-2 7.04×10-2 5.91×10-2
35SL 3.55×10-2 2.98×10-2 7.81×10-3 6.56×10-3 3.26×10-2 7.18×10-3 7.04×10-2 5.91×10-2
45 6.78×10-2 5.69×10-2 1.30×10-2 1.09×10-2 6.23×10-2 1.19×10-2 5.22×10-2 4.39×10-2
45L 5.07×10-2 4.26×10-2 1.07×10-2 8.99×10-3 4.66×10-2 9.86×10-3 5.22×10-2 4.39×10-2
45SL 3.10×10-2 2.61×10-2 6.87×10-3 5.77×10-3 2.86×10-2 6.32×10-3 5.22×10-2 4.39×10-2
55 5.71×10-2 4.79×10-2 1.10×10-2 9.24×10-3 5.25×10-2 1.01×10-2 4.58×10-2 3.84×10-2
55L 4.50×10-2 3.78×10-2 9.14×10-3 7.65×10-3 4.14×10-2 8.39×10-3 4.58×10-2 3.84×10-2
55SL 2.07×10-2 1.74×10-2 4.69×10-3 3.94×10-3 1.90×10-2 4.31×10-3 4.58×10-2 3.84×10-2
65 4.93×10-2 4.14×10-2 9.70×10-3 8.15×10-3 4.53×10-2 8.88×10-3 3.86×10-2 3.25×10-2
65L 3.54×10-2 2.97×10-2 7.47×10-3 6.30×10-3 3.25×10-2 6.86×10-3 3.86×10-2 3.25×10-2
65SL 1.95×10-2 1.64×10-2 4.44×10-3 3.73×10-3 1.80×10-2 4.08×10-3 3.86×10-2 3.25×10-2
NRS 75 4.05×10-2 8.01×10-3 4.05×10-2 8.01×10-3 3.20×10-2
75L 3.03×10-2 6.50×10-3 3.03×10-2 6.50×10-3 3.20×10-2
85 3.56×10-2 7.05×10-3 3.56×10-2 7.05×10-3 2.83×10-2
85L 2.70×10-2 5.87×10-3 2.70×10-2 5.87×10-3 2.83×10-2
100 2.93×10-2 5.97×10-3 2.93×10-2 5.97×10-3 2.41×10-2
100L 2.65×10-2 5.27×10-3 2.65×10-2 5.27×10-3 2.41×10-2
HRW 12 2.72×10-1 1.93×10-1 5.16×10-2 3.65×10-2 5.47×10-1 1.04×10-1 1.40×10-1 9.92×10-2
14 2.28×10-1 1.61×10-1 4.16×10-2 2.94×10-2 4.54×10-1 8.28×10-2 1.01×10-1 7.18×10-2
17 1.96×10-1 3.34×10-2 1.96×10-1 3.34×10-2 6.30×10-2
21 1.65×10-1 2.90×10-2 1.65×10-1 2.90×10-2 5.89×10-2
27 1.30×10-1 2.34×10-2 1.30×10-1 2.34×10-2 5.11×10-2
35 8.69×10-2 1.60×10-2 8.69×10-2 1.60×10-2 3.06×10-2
50 6.52×10-2 1.22×10-2 6.52×10-2 1.22×10-2 2.35×10-2
60 5.80×10-2 1.08×10-2 5.80×10-2 1.08×10-2 1.77×10-2
RSX 5M 6.68×10-1 9.11×10-2 6.80×10-1 9.24×10-2 3.86×10-1
5NM 5.25×10-1 8.01×10-2 5.36×10-1 8.12×10-2 3.86×10-1
5WM 4.58×10-1 7.39×10-2 4.65×10-1 7.51×10-2 1.96×10-1
5WNM 3.31×10-1 5.98×10-2 3.36×10-1 6.06×10-2 1.96×10-1
7SM 5.90×10-1 7.87×10-2 6.12×10-1 8.15×10-2 2.59×10-1
7M 4.72×10-1 6.68×10-2 4.87×10-1 6.88×10-2 2.59×10-1
7NM 3.10×10-1 5.18×10-2 3.20×10-1 5.33×10-2 2.59×10-1
7WSM 5.23×10-1 6.75×10-2 5.43×10-1 6.95×10-2 1.36×10-1
7WM 3.10×10-1 5.34×10-2 3.20×10-1 5.50×10-2 1.36×10-1
7WNM 2.21×10-1 4.18×10-2 2.27×10-1 4.32×10-2 1.36×10-1
9SM 5.37×10-1 6.77×10-2 5.57×10-1 7.00×10-2 2.17×10-1
9M 3.10×10-1 5.28×10-2 3.19×10-1 5.44×10-2 2.17×10-1
9NM 2.17×10-1 4.13×10-2 2.24×10-1 4.27×10-2 2.17×10-1
9WSM 4.16×10-1 5.80×10-2 4.30×10-1 5.98×10-2 1.06×10-1
9WM 2.31×10-1 4.31×10-2 2.38×10-1 4.43×10-2 1.06×10-1
9WNM 1.75×10-1 3.38×10-2 1.81×10-1 3.48×10-2 1.06×10-1
12SM 5.04×10-1 5.52×10-2 5.04×10-1 5.52×10-2 1.52×10-1
12M 2.96×10-1 4.55×10-2 2.96×10-1 4.55×10-2 1.52×10-1
12NM 1.96×10-1 3.50×10-2 1.96×10-1 3.50×10-2 1.52×10-1
12WSM 3.32×10-1 5.07×10-2 3.32×10-1 5.07×10-2 7.95×10-2
12WM 2.10×10-1 3.69×10-2 2.10×10-1 3.69×10-2 7.95×10-2
12WNM 1.46×10-1 2.85×10-2 1.46×10-1 2.85×10-2 7.95×10-2
15SM 3.36×10-1 4.58×10-2 3.36×10-1 4.58×10-2 1.41×10-1
15M 2.34×10-1 3.65×10-2 2.34×10-1 3.65×10-2 1.41×10-1
15NM 1.45×10-1 2.75×10-2 1.45×10-1 2.75×10-2 1.41×10-1
15WSM 2.34×10-1 3.81×10-2 2.34×10-1 3.81×10-2 4.82×10-2
15WM 1.66×10-1 2.97×10-2 1.66×10-1 2.97×10-2 4.82×10-2
15WNM 1.15×10-1 2.28×10-2 1.15×10-1 2.28×10-2 4.82×10-2
9M1 3.10×10-1 5.28×10-2 3.19×10-1 5.44×10-2 2.17×10-1
9M1N 2.17×10-1 4.13×10-2 2.24×10-1 4.27×10-2 2.17×10-1
9M1W 2.31×10-1 4.31×10-2 2.38×10-1 4.43×10-2 1.06×10-1
9M1WN 1.75×10-1 3.38×10-2 1.81×10-1 3.48×10-2 1.06×10-1
12M1 2.96×10-1 4.55×10-2 2.96×10-1 4.55×10-2 1.52×10-1
12M1N 1.96×10-1 3.50×10-2 1.96×10-1 3.50×10-2 1.52×10-1
12M1W 2.10×10-1 3.69×10-2 2.10×10-1 3.69×10-2 7.95×10-2
12M1WN 1.46×10-1 2.85×10-2 1.46×10-1 2.85×10-2 7.95×10-2
15M1 2.34×10-1 3.65×10-2 2.34×10-1 3.65×10-2 1.41×10-1
15M1N 1.45×10-1 2.75×10-2 1.45×10-1 2.75×10-2 1.41×10-1
15M1W 1.66×10-1 2.97×10-2 1.66×10-1 2.97×10-2 4.82×10-2
15M1WN 1.15×10-1 2.28×10-2 1.15×10-1 2.28×10-2 4.82×10-2
  • KAR1: Equivalent factor in the MA radial direction when one LM block is used
  • KAL1: Equivalent factor in the MA reverse-radial direction when one LM block is used
  • KAR2: Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other
  • KAL2: Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other
  • KB1: MB Equivalent factor when one LM block is used
  • KB2: MB Equivalent factor when two LM blocks are used in close contact with each other
  • KCR: Equivalent factor in the MC radial direction
  • KCL: Equivalent factor in the MC reverse-radial direction
Table 5: Equivalent Factors (Models RSR and HR)
Model No. Equivalent factor in the MA radial direction when one LM block is used Equivalent factor in the MA reverse-radial direction when one LM block is used Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other MB equivalent factor when one LM block is used MB equivalent factor when two LM blocks are used in close contact with each other Equivalent factor in the MC radial direction Equivalent factor in the MC reverse-radial direction
KAR1 KAL1 KAR2 KAL2 KB1 KB2 KCR KCL
RSR 2N 6.81×10-1 1.28×10-1 6.81×10-1 1.28×10-1 8.69×10-1
2WN 5.10×10-1 9.32×10-2 5.10×10-1 9.32×10-2 4.54×10-1
3M 9.20×10-1 1.27×10-1 9.20×10-1 1.27×10-1 6.06×10-1
3N 6.06×10-1 1.01×10-1 6.06×10-1 1.01×10-1 6.06×10-1
3W 7.03×10-1 1.06×10-1 7.03×10-1 1.06×10-1 3.17×10-1
3WN 4.76×10-1 8.27×10-2 4.76×10-1 8.27×10-2 3.17×10-1
14WV 2.10×10-1 1.47×10-1 3.89×10-2 2.73×10-2 1.69×10-1 3.10×10-2 8.22×10-2 5.75×10-2
20M1V 1.68×10-1 1.18×10-1 2.92×10-2 2.04×10-2 1.35×10-1 2.32×10-2 1.30×10-1 9.13×10-2
20M1N 1.20×10-1 8.39×10-2 2.30×10-2 1.61×10-2 9.68×10-2 1.84×10-2 1.30×10-1 9.13×10-2
HR 918 2.65×10-1 3.58×10-2 2.65×10-1 3.58×10-2 - -
1123 2.08×10-1 3.17×10-2 2.08×10-1 3.17×10-2 - -
1530 1.56×10-1 2.39×10-2 1.56×10-1 2.39×10-2 - -
2042 1.11×10-1 1.80×10-2 1.11×10-1 1.80×10-2 - -
2042T 8.64×10-2 1.53×10-2 8.64×10-2 1.53×10-2 - -
2555 7.79×10-2 1.38×10-2 7.79×10-2 1.38×10-2 - -
2555T 6.13×10-2 1.17×10-2 6.13×10-2 1.17×10-2 - -
3065 6.92×10-2 1.15×10-2 6.92×10-2 1.15×10-2 - -
3065T 5.45×10-2 9.92×10-3 5.45×10-2 9.92×10-3 - -
3575 6.23×10-2 1.08×10-2 6.23×10-2 1.08×10-2 - -
3575T 4.90×10-2 9.42×10-3 4.90×10-2 9.42×10-3 - -
4085 5.19×10-2 9.53×10-3 5.19×10-2 9.53×10-3 - -
4085T 4.09×10-2 7.97×10-3 4.09×10-2 7.97×10-3 - -
50105 4.15×10-2 7.40×10-3 4.15×10-2 7.40×10-3 - -
50105T 3.27×10-2 6.26×10-3 3.27×10-2 6.26×10-3 - -
60125 2.88×10-2 5.18×10-3 2.88×10-2 5.18×10-3 - -
  • KAR1: Equivalent factor in the MA radial direction when one LM block is used
  • KAL1: Equivalent factor in the MA reverse-radial direction when one LM block is used
  • KAR2: Equivalent factor in the MAradial direction when two LM blocks are used in close contact with each other
  • KAL2: Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other
  • KB1: MB equivalent factor when one LM block is used
  • KB2: MB equivalent factor when two LM blocks are used in close contact with each other
  • KCR: Equivalent factor in the MC radial direction
  • KCL: Equivalent factor in the MC reverse-radial direction
Table 6: Equivalent Factors (Models GSR, CSR, MX, JR, NSR, SRG, SRN, and SRW)
Model No. Equivalent factor in the MA radial direction when one LM block is used Equivalent factor in the MA reverse-radial direction when one LM block is used Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other MB equivalent factor when one LM block is used MB equivalent factor when two LM blocks are used in close contact with each other Equivalent factor in the MC radial direction Equivalent factor in the MC reverse-radial direction
KAR1 KAL1 KAR2 KAL2 KB1 KB2 KCR KCL
GSR 15T 1.61×10-1 1.44×10-1 2.88×10-2 2.59×10-2 1.68×10-1 3.01×10-2 - -
15V 2.21×10-1 1.99×10-1 3.54×10-2 3.18×10-2 2.30×10-1 3.68×10-2 - -
20T 1.28×10-1 1.16×10-1 2.34×10-2 2.10×10-2 1.34×10-1 2.44×10-2 - -
20V 1.77×10-1 1.59×10-1 2.87×10-2 2.58×10-2 1.84×10-1 2.99×10-2 - -
25T 1.07×10-1 9.63×10-2 1.97×10-2 1.77×10-2 1.12×10-1 2.06×10-2 - -
25V 1.47×10-1 1.33×10-1 2.42×10-2 2.18×10-2 1.53×10-1 2.52×10-2 - -
30T 9.17×10-2 8.26×10-2 1.68×10-2 1.51×10-2 9.59×10-2 1.76×10-2 - -
35T 8.03×10-2 7.22×10-2 1.48×10-2 1.33×10-2 8.39×10-2 1.55×10-2 - -
CSR 15 1.66×10-1 - 1.66×10-1 - -
20S 1.26×10-1 - 1.26×10-1 - -
20 9.88×10-2 - 9.88×10-2 - -
25S 1.12×10-1 - 1.12×10-1 - -
25 8.23×10-2 - 8.23×10-2 - -
30S 8.97×10-2 - 8.97×10-2 - -
30 7.05×10-2 - 7.05×10-2 - -
35 6.17×10-2 - 6.17×10-2 - -
45 5.22×10-2 - 5.22×10-2 - -
MX 5 4.27×10-1 7.01×10-2 4.27×10-1 7.01×10-2 -
7W 2.18×10-1 4.13×10-2 2.18×10-1 4.13×10-2 -
JR 25 1.12×10-1 2.02×10-2 1.12×10-1 2.02×10-2 9.96×10-2
35 7.85×10-2 1.56×10-2 7.85×10-2 1.56×10-2 6.69×10-2
45 6.73×10-2 1.21×10-2 6.73×10-2 1.21×10-2 5.20×10-2
55 5.61×10-2 1.03×10-2 5.61×10-2 1.03×10-2 4.26×10-2
NSR 20TBC 2.29×10-1 2.68×10-2 2.29×10-1 2.68×10-2 - -
25TBC 2.01×10-1 2.27×10-2 2.01×10-1 2.27×10-2 - -
30TBC 1.85×10-1 1.93×10-2 1.85×10-1 1.93×10-2 - -
40TBC 1.39×10-1 1.60×10-2 1.39×10-1 1.60×10-2 - -
50TBC 1.24×10-1 1.42×10-2 1.24×10-1 1.42×10-2 - -
70TBC 9.99×10-2 1.15×10-2 9.99×10-2 1.15×10-2 - -
SRG 15X 1.23×10-1 2.07×10-2 1.23×10-1 2.07×10-2 1.04×10-1
15XG 1.25×10-1 2.08×10-2 1.25×10-1 2.08×10-2 1.04×10-1
20X 9.60×10-2 1.71×10-2 9.60×10-2 1.71×10-2 8.00×10-2
20XG 9.67×10-2 1.68×10-2 9.67×10-2 1.68×10-2 8.00×10-2
20XL 7.21×10-2 1.42×10-2 7.21×10-2 1.42×10-2 8.00×10-2
20XGL 7.38×10-2 1.39×10-2 7.38×10-2 1.39×10-2 8.00×10-2
25X 8.96×10-2 1.55×10-2 8.96×10-2 1.55×10-2 7.23×10-2
25XG 8.52×10-2 1.51×10-2 8.52×10-2 1.51×10-2 7.23×10-2
25XL 6.99×10-2 1.31×10-2 6.99×10-2 1.31×10-2 7.23×10-2
25XGL 6.69×10-2 1.27×10-2 6.69×10-2 1.27×10-2 7.23×10-2
30X 8.06×10-2 1.33×10-2 8.06×10-2 1.33×10-2 5.61×10-2
30XG 7.90×10-2 1.34×10-2 7.90×10-2 1.34×10-2 5.96×10-2
30XL 6.12×10-2 1.11×10-2 6.12×10-2 1.11×10-2 5.61×10-2
30XGL 6.15×10-2 1.11×10-2 6.15×10-2 1.11×10-2 5.96×10-2
35 7.14×10-2 1.18×10-2 7.14×10-2 1.18×10-2 4.98×10-2
35G 7.37×10-2 1.17×10-2 7.37×10-2 1.17×10-2 4.86×10-2
35L 5.26×10-2 9.67×10-3 5.26×10-2 9.67×10-3 4.98×10-2
35GL 5.37×10-2 9.67×10-3 5.37×10-2 9.67×10-3 4.86×10-2
35SL 4.40×10-2 8.34×10-3 4.40×10-2 8.34×10-3 4.98×10-2
35GSL 4.43×10-2 8.35×10-3 4.43×10-2 8.35×10-3 4.86×10-2
45 5.49×10-2 9.58×10-3 5.49×10-2 9.58×10-3 3.85×10-2
45G 5.53×10-2 9.60×10-3 5.53×10-2 9.60×10-3 3.68×10-2
45L 4.18×10-2 7.93×10-3 4.18×10-2 7.93×10-3 3.85×10-2
45GL 4.19×10-2 7.94×10-3 4.19×10-2 7.94×10-3 3.68×10-2
45SL 3.28×10-2 6.56×10-3 3.28×10-2 6.56×10-3 3.85×10-2
45GSL 3.30×10-2 6.57×10-3 3.30×10-2 6.57×10-3 3.68×10-2
55 4.56×10-2 8.04×10-3 4.56×10-2 8.04×10-3 3.25×10-2
55G 4.61×10-2 8.05×10-3 4.61×10-2 8.05×10-3 3.14×10-2
55L 3.37×10-2 6.42×10-3 3.37×10-2 6.42×10-3 3.25×10-2
55GL 3.40×10-2 6.42×10-3 3.40×10-2 6.42×10-3 3.14×10-2
55SL 2.56×10-2 5.22×10-3 2.56×10-2 5.22×10-3 3.25×10-2
55GSL 2.59×10-2 5.22×10-3 2.59×10-2 5.22×10-3 3.14×10-2
65 3.54×10-2 6.06×10-3 3.54×10-2 6.06×10-3 2.70×10-2
65G 3.44×10-2 6.10×10-3 3.44×10-2 6.10×10-3 2.63×10-2
65L 2.63×10-2 4.97×10-3 2.63×10-2 4.97×10-3 2.70×10-2
65GL 2.65×10-2 4.98×10-3 2.65×10-2 4.98×10-3 2.63×10-2
65SL 1.97×10-2 4.01×10-3 1.97×10-2 4.01×10-3 2.70×10-2
65GSL 1.99×10-2 4.10×10-3 1.99×10-2 4.10×10-3 2.63×10-2
85LC 2.19×10-2 4.15×10-3 2.19×10-2 4.15×10-3 1.91×10-2
100LC 1.95×10-2 3.67×10-3 1.95×10-2 3.67×10-3 1.62×10-2
SRN 35 7.14×10-2 1.18×10-2 7.14×10-2 1.18×10-2 4.98×10-2
35G 7.37×10-2 1.17×10-2 7.37×10-2 1.17×10-2 4.86×10-2
35L 5.26×10-2 9.67×10-3 5.26×10-2 9.67×10-3 4.98×10-2
35GL 5.37×10-2 9.67×10-3 5.37×10-2 9.67×10-3 4.86×10-2
35SL 4.40×10-2 8.34×10-3 4.40×10-2 8.34×10-3 4.98×10-2
35GSL 4.43×10-2 8.35×10-3 4.43×10-2 8.35×10-3 4.86×10-2
45 5.49×10-2 9.58×10-3 5.49×10-2 9.58×10-3 3.85×10-2
45G 5.53×10-2 9.60×10-3 5.53×10-2 9.60×10-3 3.68×10-2
45L 4.18×10-2 7.93×10-3 4.18×10-2 7.93×10-3 3.85×10-2
45GL 4.19×10-2 7.94×10-3 4.19×10-2 7.94×10-3 3.68×10-2
45SL 3.28×10-2 6.56×10-3 3.28×10-2 6.56×10-3 3.85×10-2
45GSL 3.30×10-2 6.57×10-3 3.30×10-2 6.57×10-3 3.68×10-2
55 4.56×10-2 8.04×10-3 4.56×10-2 8.04×10-3 3.25×10-2
55G 4.61×10-2 8.05×10-3 4.61×10-2 8.05×10-3 3.14×10-2
55L 3.37×10-2 6.42×10-3 3.37×10-2 6.42×10-3 3.25×10-2
55GL 3.40×10-2 6.42×10-3 3.40×10-2 6.42×10-3 3.14×10-2
55SL 2.56×10-2 5.22×10-3 2.56×10-2 5.22×10-3 3.25×10-2
55GSL 2.59×10-2 5.22×10-3 2.59×10-2 5.22×10-3 3.14×10-2
65 3.54×10-2 6.06×10-3 3.54×10-2 6.06×10-3 2.70×10-2
65G 3.44×10-2 6.10×10-3 3.44×10-2 6.10×10-3 2.63×10-2
65L 2.63×10-2 4.97×10-3 2.63×10-2 4.97×10-3 2.70×10-2
65GL 2.65×10-2 4.98×10-3 2.65×10-2 4.98×10-3 2.63×10-2
65SL 1.97×10-2 4.01×10-3 1.97×10-2 4.01×10-3 2.70×10-2
65GSL 1.99×10-2 4.10×10-3 1.99×10-2 4.10×10-3 2.63×10-2
SRW 70 4.18×10-2 7.93×10-3 4.18×10-2 7.93×10-3 2.52×10-2
85 3.37×10-2 6.42×10-3 3.37×10-2 6.42×10-3 2.09×10-2
100 2.63×10-2 4.97×10-3 2.63×10-2 4.97×10-3 1.77×10-2
130 2.19×10-2 4.15×10-3 2.19×10-2 4.15×10-3 1.33×10-2
150 1.95×10-2 3.67×10-3 1.95×10-2 3.67×10-3 1.15×10-2
  • KAR1: Equivalent factor in the MA radial direction when one LM block is used
  • KAL1: Equivalent factor in the MA reverse-radial direction when one LM block is used
  • KAR2: Equivalent factor in the MA radial direction when two LM blocks are used in close contact with each other
  • KAL2: Equivalent factor in the MA reverse-radial direction when two LM blocks are used in close contact with each other
  • KB1: MB equivalent factor when one LM block is used
  • KB2: MB equivalent factor when two LM blocks are used inclose contact with each other
  • KCR: Equivalent factor in the MC radial direction
  • KCL: Equivalent factor in the MC reverse-radial direction

Double-Axis Use

Setting Conditions

Set the conditions needed to calculate the applied load and service life in hours for the LM System.

  • Mass: m (kg)
  • Direction of the working load
  • Position of the working point (e.g., center of gravity): ℓ2, ℓ3, h1 (mm)
  • Thrust position: ℓ4, h2 (mm)
  • LM System arrangement: ℓ0, ℓ1 (mm) (No. of units and axes)
  • Velocity diagram, Speed: V (mm/s), Time constant: tn (s), Acceleration: αn (mm/s2)
  • Duty cycle, Number of reciprocations per minute: N1 (min-1)
  • Stroke length: ℓs (mm)
  • Average speed: Vm (m/s)
  • Required service life in hours: Lh (h) Gravitational acceleration g = 9.8 (m/s2)
Applied Load Equation

The load applied to the LM Guide varies with external forces such as the location of the center of gravity of the load, the position of the thrust, inertia generated by acceleration and deceleration during starts and stops, and cutting resistance. In selecting an LM Guide, it is necessary to obtain the value of the applied load while taking into account these conditions.

Calculate the load applied to the LM Guide in each of the examples 1 to 10 shown below.

m

 Mass (kg)

ℓn

 Distance (mm)

Fn

 External force (N)

Pn

 Applied load (radial/reverse-radial direction) (N)

PnT

 Applied load (lateral directions) (N)

g

 Gravitational acceleration (g = 9.8 m/s2)

V

 Speed (m/s)

tn

 Time constant (s)

αn

 Acceleration (m/s2)
Example
Condition Applied Load Equation
1

Horizontal mount (with the block traveling), uniform motion or stationary
2

Horizontal mount, overhung (with the block traveling), uniform motion or stationary
3

Vertical mount, uniform motion or stationary
4

Wall mount, uniform motion or stationary
5

With the LM rails moving, horizontal mount
6

Lateral tilt mount
7

Longitudinal tilt mount
8

Horizontal mount with inertia
9

Vertical mount with inertia
10

Horizontal mount with external force

Note: Load is positive in the direction of the arrow.

Example Calculations

When One LM block is Used

Model No.: SSR20XV1

Gravitational acceleration g = 9.8 (m/s2)
Mass m = 10 (kg)
ℓ1 = 200 (mm)
ℓ2 = 100 (mm)

When Two LM blocks are Used in Close Contact with Each Other

Model No.: SVS25R2

Gravitational acceleration g = 9.8 (m/s2)
Mass m = 5(kg)
ℓ1 = 200 (mm）
ℓ2 = 150 (mm）

Note: Since an LM Guide used in vertical installation receives only a moment load, there is no need to apply a load force (mg).

Selection Criteria

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