THK Miniature Caged Ball LM Guide (SRS)

THK SRS-M Set

A standard type of Miniature Caged Ball LM Guide

Model No. Dimensions Basic load rating
Outer Block Rail Radial
Height
M
Width
W
Length
L
B C S x l Pitch
F
d1xd2xh Dynamic
rating
C(KN)
Static
rating
C0(KN)
SRS7MUU+70LM 8 17 23.4 12 8 M2 x 2.3 15 2.4x4.2x2.3 1.51 1.29
SRS7MUU+85LM 8 17 23.4 12 8 M2 x 2.3 15 2.4x4.2x2.3 1.51 1.29
SRS7MUU+100LM 8 17 23.4 12 8 M2 x 2.3 15 2.4x4.2x2.3 1.51 1.29
SRS7MUU+130LM 8 17 23.4 12 8 M2 x 2.3 15 2.4x4.2x2.3 1.51 1.29
SRS7MUU+145LM 8 17 23.4 12 8 M2 x 2.3 15 2.4x4.2x2.3 1.51 1.29
SRS9XMUU+55LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
2SRS9XMUU+75LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
SRS9XMUU+75LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
2SRS9XMUU+95LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
SRS9XMUU+95LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
2SRS9XMUU+115LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
SRS9XMUU+115LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
2SRS9XMUU+155LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
SRS9XMUU+155LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
2SRS9XMUU+195LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
SRS9XMUU+195LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
2SRS9XMUU+275LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
SRS9XMUU+275LM 10 20 30.8 15 10 M3 x 2.8 20 3.5x6x3.3 2.69 2.75
2SRS12MUU+120LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
SRS12MUU+120LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
2SRS12MUU+170LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
SRS12MUU+170LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
2SRS12MUU+220LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
SRS12MUU+220LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
2SRS12MUU+270LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
SRS12MUU+270LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
2SRS12MUU+320LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
SRS12MUU+320LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
2SRS12MUU+370LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
SRS12MUU+370LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
2SRS12MUU+470LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
SRS12MUU+470LM 13 27 34.4 20 15 M3 x 3.2 25 3.5x6x4.5 4 3.53
2SRS15MUU+150LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
SRS15MUU+150LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
2SRS15MUU+230LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
SRS15MUU+230LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
2SRS15MUU+310LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
SRS15MUU+310LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
2SRS15MUU+430LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
SRS15MUU+430LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
2SRS15MUU+550LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
SRS15MUU+550LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
2SRS15MUU+670LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7
SRS15MUU+670LM 16 32 43 25 20 M3 x 3.5 40 3.5x6x4.5 6.66 5.7

THK SRS-M Block

A standard type of Miniature Caged Ball LM Guide.
SRS-M Block is interchangeable with the SRS-M Rail and Not for use with the SRS-M Set

Model No. Dimensions Basic load rating
Outer Block Radial
Height
M
Width
W
Length
L
B C S x l N Greasing
hole
d
Dynamic
rating
C(KN)
Static
rating
C0(KN)
SRS9XMUU BLOCK 10 20 30.8 15 10 M3 x 2.8 2.4 1.6 2.69 2.75
SRS12MUU BLOCK 13 27 34.4 20 15 M3 x 3.2 3 2 4.00 3.53
SRS15MUU BLOCK 16 32 43 25 20 M3 x 3.5 3 3 6.66 5.70

THK SRS-N Block

The LM block has the same cross-sectional shape as model SRS-M, but has a longer overall LM block length and a greater rated load and permissible moment.
SRS-N Block is interchangeable with the SRS-M Rail and Not for use with the SRS-M Set

Model No. Dimensions Basic load rating
Outer Block Radial
Height
M
Width
W
Length
L
B C S x l N Greasing
hole
d
Dynamic
rating
C(KN)
Static
rating
C0(KN)
SRS9XNUU BLOCK 10 20 40.8 15 16 M3 x 2.8 2.4 1.6 3.48 3.98
SRS12NUU BLOCK 13 27 47.1 20 20 M3 x 3.2 3 2 5.82 5.30
SRS15NUU BLOCK 16 32 60.8 25 25 M3 x 3.5 3 3 9.71 8.55

THK Miniature Rail (SRS-M)

Rail for SRS-M/N Blocks
SRS-M Rail is for SRS-M/N Block. *Not for block of SRS-M Set

Model No. Nominal rail size Maximum length Series Standard pitch F G
SRS9X-55LM RAIL 9 mm 55 mm SRS9X 20 7.5
SRS9X-75LM RAIL 9 mm 75 mm SRS9X 20 7.5
SRS9X-95LM RAIL 9 mm 95 mm SRS9X 20 7.5
SRS9X-115LM RAIL 9 mm 115 mm SRS9X 20 7.5
SRS9X-135LM RAIL 9 mm 135 mm SRS9X 20 7.5
SRS9X-155LM RAIL 9 mm 155 mm SRS9X 20 7.5
SRS9X-175LM RAIL 9 mm 175 mm SRS9X 20 7.5
SRS9X-195LM RAIL 9 mm 195 mm SRS9X 20 7.5
SRS9X-275LM RAIL 9 mm 275 mm SRS9X 20 7.5
SRS9X-375LM RAIL 9 mm 375 mm SRS9X 20 7.5
SRS9X-1000LM RAIL 9 mm 1000 mm SRS9X 20 7.5
SRS12-70LM RAIL 12 mm 70 mm SRS12 25 10
SRS12-95LM RAIL 12 mm 95 mm SRS12 25 10
SRS12-120LM RAIL 12 mm 120 mm SRS12 25 10
SRS12-145LM RAIL 12 mm 145 mm SRS12 25 10
SRS12-170LM RAIL 12 mm 170 mm SRS12 25 10
SRS12-195LM RAIL 12 mm 195 mm SRS12 25 10
SRS12-220LM RAIL 12 mm 220 mm SRS12 25 10
SRS12-245LM RAIL 12 mm 245 mm SRS12 25 10
SRS12-270LM RAIL 12 mm 270 mm SRS12 25 10
SRS12-320LM RAIL 12 mm 320 mm SRS12 25 10
SRS12-370LM RAIL 12 mm 370 mm SRS12 25 10
SRS12-470LM RAIL 12 mm 470 mm SRS12 25 10
SRS12-570LM RAIL 12 mm 570 mm SRS12 25 10
SRS12-1000LM RAIL 12 mm 1000 mm SRS12 25 10
SRS15-70LM RAIL 15 mm 70 mm SRS15 40 15
SRS15-110LM RAIL 15 mm 110 mm SRS15 40 15
SRS15-150LM RAIL 15 mm 150 mm SRS15 40 15
SRS15-190LM RAIL 15 mm 190 mm SRS15 40 15
SRS15-230LM RAIL 15 mm 230 mm SRS15 40 15
SRS15-270LM RAIL 15 mm 270 mm SRS15 40 15
SRS15-310LM RAIL 15 mm 310 mm SRS15 40 15
SRS15-350LM RAIL 15 mm 350 mm SRS15 40 15
SRS15-390LM RAIL 15 mm 390 mm SRS15 40 15
SRS15-430LM RAIL 15 mm 430 mm SRS15 40 15
SRS15-470LM RAIL 15 mm 470 mm SRS15 40 15
SRS15-550LM RAIL 15 mm 550 mm SRS15 40 15
SRS15-670LM RAIL 15 mm 670 mm SRS15 40 15
SRS15-870LM RAIL 15 mm 870 mm SRS15 40 15

THK SRS-WM Set

Has a longer overall LM block length (L), a greater width and a larger rated load and permissible moment than SRS-M.

Model No. Dimensions Basic load rating
Outer Block Rail Radial
Height
M
Width
W
Length
L
B C S x l Pitch
F
d1xd2xh Dynamic
rating
C
Static
rating
C0
mm mm mm mm mm mm mm mm (KN) (KN)
SRS7WMUU+80LM 9 25 31 19 10 M3 x 2.8 30 3.5x6x3.2 2.01 1.94
SRS7WMUU+110LM 9 25 31 19 10 M3 x 2.8 30 3.5x6x3.2 2.01 1.94
SRS7WMUU+140LM 9 25 31 19 10 M3 x 2.8 30 3.5x6x3.2 2.01 1.94
SRS7WMUU+170LM 9 25 31 19 10 M3 x 2.8 30 3.5x6x3.2 2.01 1.94
SRS7WMUU+200LM 9 25 31 19 10 M3 x 2.8 30 3.5x6x3.2 2.01 1.94
SRS7WMUU+260LM 9 25 31 19 10 M3 x 2.8 30 3.5x6x3.2 2.01 1.94
SRS7WMUU+290LM 9 25 31 19 10 M3 x 2.8 30 3.5x6x3.2 2.01 1.94
SRS9WMUU+80LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
SRS9WMUU+110LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
2SRS9WMUU+110LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
SRS9WMUU+140LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
2SRS9WMUU+140LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
SRS9WMUU+170LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
2SRS9WMUU+170LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
SRS9WMUU+200LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
2SRS9WMUU+200LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
SRS9WMUU+260LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
2SRS9WMUU+260LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
SRS9WMUU+290LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
2SRS9WMUU+290LM 12 30 39 21 12 M3 x 2.8 30 3.5x6x4.5 3.29 3.34
SRS12WMUU+110LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
2SRS12WMUU+110LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
SRS12WMUU+150LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
2SRS12WMUU+150LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
SRS12WMUU+190LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
2SRS12WMUU+190LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
SRS12WMUU+230LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
2SRS12WMUU+230LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
SRS12WMUU+310LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
2SRS12WMUU+310LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
SRS12WMUU+390LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
2SRS12WMUU+390LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
SRS12WMUU+470LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
2SRS12WMUU+470LM 14 40 44.5 28 15 M3 x 3.5 40 4.5x8x4.5 5.48 5.3
SRS15WMUU+150LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
2SRS15WMUU+150LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
SRS15WMUU+230LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
2SRS15WMUU+230LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
SRS15WMUU+310LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
2SRS15WMUU+310LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
SRS15WMUU+430LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
2SRS15WMUU+430LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
SRS15WMUU+550LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
2SRS15WMUU+550LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
SRS15WMUU+670LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55
2SRS15WMUU+670LM 16 60 55.5 45 20 M4 x 4.5 40 4.5x8x4.5 9.12 8.55

THK SRS-WM Block

Has a longer overall LM block length (L), a greater width and a larger rated load and permissible moment than SRS-M.
SRS-WM Block is interchangeable with the SRS-W Rail and Not for use with the SRS-WM Set

Model No. Dimensions Basic load rating
Outer Block Radial
Height
M
Width
W
Length
L
B C S x l N Greasing
hole
d
Dynamic
rating
C
Static
rating
C0
mm mm mm mm mm mm mm mm (KN) (KN)
SRS9WMUU BLOCK 12 30 39 21 12 M3 x 2.8 2.3 1.6 3.29 3.34
SRS12WMUU BLOCK 14 40 44.5 28 15 M3 x 3.5 3 2 5.48 5.30
SRS15WMUU BLOCK 16 60 55.5 45 20 M3 x 4.5 3 3 9.12 8.55

THK SRS-WN Block

The LM block has the same cross-sectional shape as model SRS-WM, but has a longer overall LM block length and a greater rated load and permissible moment.
SRS-WN Block is interchangeable with the SRS-M Rail and Not for use with the SRS-M Set

Model No. Dimensions Basic load rating
Outer Block Radial
Height
M
Width
W
Length
L
B C S x l N Greasing
hole
d
Dynamic
rating
C
Static
rating
C0
mm mm mm mm mm mm mm mm (KN) (KN)
SRS9WNUU BLOCK 12 30 50.7 21 12 M3 x 2.8 2.3 1.6 4.20 4.37
SRS12WNUU BLOCK 14 40 59.5 28 15 M3 x 3.5 3 2 7.13 7.07
SRS15WNUU BLOCK 16 60 74.5 45 20 M3 x 4.5 3 3 12.4 12.1

THK Miniature Rail (SRS-W)

Rail for SRS-WM/WN Blocks
SRS-W Rail is for SRS-WM/WN Block. *Not for block of SRS-WM Set

Model No. Nominal rail size Maximum length Series Standard pitch F G
SRS9W-50LM RAIL 9 mm 50 mm SRS9W 30 10
SRS9W-80LM RAIL 9 mm 80 mm SRS9W 30 10
SRS9W-110LM RAIL 9 mm 110 mm SRS9W 30 10
SRS9W-140LM RAIL 9 mm 140 mm SRS9W 30 10
SRS9W-170LM RAIL 9 mm 170 mm SRS9W 30 10
SRS9W-200LM RAIL 9 mm 200 mm SRS9W 30 10
SRS9W-260LM RAIL 9 mm 260 mm SRS9W 30 10
SRS9W-290LM RAIL 9 mm 290 mm SRS9W 30 10
SRS9W-320LM RAIL 9 mm 320 mm SRS9W 30 10
SRS9W-1000LM RAIL 9 mm 1000 mm SRS9W 30 10
SRS12W-70LM RAIL 12 mm 70 mm SRS12W 40 15
SRS12W-110LM RAIL 12 mm 110 mm SRS12W 40 15
SRS12W-150LM RAIL 12 mm 150 mm SRS12W 40 15
SRS12W-190LM RAIL 12 mm 190 mm SRS12W 40 15
SRS12W-230LM RAIL 12 mm 230 mm SRS12W 40 15
SRS12W-270LM RAIL 12 mm 270 mm SRS12W 40 15
SRS12W-310LM RAIL 12 mm 310 mm SRS12W 40 15
SRS12W-390LM RAIL 12 mm 390 mm SRS12W 40 15
SRS12W-470LM RAIL 12 mm 470 mm SRS12W 40 15
SRS12W-550LM RAIL 12 mm 550 mm SRS12W 40 15
SRS12W-1000LM RAIL 12 mm 1000 mm SRS12W 40 15
SRS15W-110LM RAIL 15 mm 110 mm SRS15W 40 15
SRS15W-150LM RAIL 15 mm 150 mm SRS15W 40 15
SRS15W-190LM RAIL 15 mm 190 mm SRS15W 40 15
SRS15W-230LM RAIL 15 mm 230 mm SRS15W 40 15
SRS15W-270LM RAIL 15 mm 270 mm SRS15W 40 15
SRS15W-310LM RAIL 15 mm 310 mm SRS15W 40 15
SRS15W-430LM RAIL 15 mm 430 mm SRS15W 40 15
SRS15W-550LM RAIL 15 mm 550 mm SRS15W 40 15
SRS15W-670LM RAIL 15 mm 670 mm SRS15W 40 15
SRS15W-790LM RAIL 15 mm 790 mm SRS15W 40 15

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