THK NRS85R Linear Guide
THK NRS85R Linear Guide machine tool guide rail allows the load platform to easily move linearly with high precision along the slide rail. Its friction coefficient can be reduced to 1/50 of that of traditional sliding guides, making it easy to achieve μm-level positioning accuracy.
The final unit design between the slide block and the slide rail enables the linear slide rail to withstand loads from up, down, left, and right directions at the same time. The patented return system and simplified structural design allow the linear slide rail to move smoothly and with low noise.
The THK NRS85R Linear Guide is a four-row single arc tooth contact linear slide. It also integrates an ultra-heavy load precision linear slide with optimized structural design. It can increase the load and load by more than 30% compared with other four-row linear slides of the same type. Rigidity capability; equipped with load characteristics in four directions and automatic centering function, which can absorb assembly errors on the installation surface and achieve high-precision requirements.
| Model No | Outer dimensions | LM block dimensions | H₃ | |||||||||||||
| M | Width
W |
Lengtt
L |
B | C | SXl | L1 | T | K | N | f₀ | E | eo | D₀ | Grease nipple |
||
| NRS 25RX NRS 25LRX |
31 | 50 | 82.8 102 |
32 | 35 50 |
M6×8 | 61.4 80.6 |
9.7 | 25.5 | 7.8 | 5.1 | 12 | 4.5 | 3.9 | B-M6F | 5.5 |
| NRS 30RX NRS 30LRX |
38 | 60 | 98 120.5 |
40 | 40 60 |
M8×10 | 72.1 94.6 |
9.7 | 31 | 10.3 | 7 | 12 | 6.5 | 3.9 | B-M6F | 7 |
| NRS 35RX NRS 351RX |
44 | 70 | 109.5 135 |
50 | 50 72 |
M8×12 | 79 104.5 |
11.7 | 35 | 12.1 | 8 | 12 | 6 | 5.2 | B-M6F | 9 |
| NRS 45RX NRS 45LRX |
52 | 86 | 138.2 171 |
60 | 60 80 |
M10×17 | 105 137.8 |
14.7 | 40.4 | 13.9 | 8 | 16 | 8.5 | 5.2 | B-PT1/8 | 11.6 |
| NRS 55RX NRS 551RX |
63 | 100 | 163.3 200.5 |
65 | 75 95 |
M12×18 | 123.6 160.8 |
17.7 | 49 | 16.6 | 10 | 16 | 10 | 5.2 | B-PT1/8 | 14 |
| NRS 65RX NRS 65LRX |
75 | 126 | 186 246 |
76 | 70 110 |
M16×20 | 143.6 203.6 |
21.6 | 60 | 19 | 15 | 16 | 8.7 | 8.2 | B-PT1/8 | 15 |
| NRS 75R NRS 75LR |
83 | 145 | 218 274 |
95 | 80 130 |
M18×25 | 170.2 226.2 |
25.3 | 68 | 18 | 17 | 16 | 9 | 8.2 | B-PT1/8 | 15 |
| NRS 85R NRS 85LR |
90 | 156 | 246.7 302.8 |
100 | 80 140 |
M18×25 | 194.9 251 |
27.3 | 73 | 20 | 20 | 16 | 10 | 8.2 | B-PT1/8 | 17 |
| NRS 100R NRS 100LR |
105 | 200 | 286.2 326.2 |
130 | 150 200 |
M18×27 | 223.4 263.4 |
34.3 | 85 | 23 | 23 | 10 | 12 | 8.2 | B-PT1/4 | 20 |
| LM rail dimensions | Basic load rating | Static permissible moment kN·m | Mass | |||||||||||
| Width
W₁ |
A V |
Height
M₁ |
Pitch
F |
d₁ ×d₂Xh | Length*
Max |
C
kN |
C₀
kN |
MA | Ma | Mc | LM blockkg |
LM railkg/m |
||
| 1 block |
Double blocks |
1 block |
Double blocks |
1 block |
||||||||||
| 25 | 12.5 | 17 | 40 | 6×9.5×8.5 | 3000 | 28.4 34.7 |
52.2 69.6 |
0.457 0.786 |
2.43 3.9 |
0.422 0.727 |
2.25 3.61 |
0.552 0.732 |
0.4 0.5 |
2.9 |
| 28 | 16 | 21 | 80 | 7×11×9 | 3000 | 41.9 51.2 |
75.2 100.2 |
0.785 1.36 |
4.12 6.62 |
0.726 1.26 |
3.82 6.13 |
0.896 1.19 |
0.7 0.9 |
4.2 |
| 34 | 18 | 24.5 | 80 | 9×14×12 | 3000 | 55.5 68.6 |
95.5 129.5 |
1.09 1.95 |
5.88 9.61 |
1.01 1.81 |
5.45 8.9 |
1.36 1.84 |
1 1.3 |
6 |
| 45 | 20.5 | 29 | 105 | 14×20×17 | 3090 | 84.4 101.1 |
151.4 195.9 |
2.23 3.87 |
11.7 18.3 |
2.07 3.57 |
10.8 16.9 |
2.9 3.75 |
1.8 2.3 |
9.5 |
| 53 | 23.5 | 36.5 | 120 | 16×23×20 | 3060 | 108.7 134.1 |
191.6 259.3 |
3.36 5.76 |
17.4 28.4 |
3.1 5.32 |
16.1 26.3 |
4.19 5.67 |
3.3 4.3 |
14 |
| 63 | 31.5 | 43 | 150 | 18×26×22 | 3000 | 159.8 206 |
269.4 387.2 |
5.46 10.9 |
27.8 51.9 |
5.05 10.1 |
25.8 48 |
6.97 10.02 |
6 8.5 |
19.6 |
| 75 | E | 44 | 150 | 22×32×26 | 3000 | 212 278 |
431 566 |
10.6 18.6 |
53.8 87 |
10.6 18.6 |
53.8 87 |
13.4 17.6 |
8.7 11.6 |
24.6 |
| 85 | 35.5 | 48 | 180 | 24×35×28 | 3000 | 264 342 |
531 687 |
14.9 25.4 |
75.3 117 |
14.9 25.4 |
75.3 117 |
18.7 24.2 |
12.3 15.8 |
30.5 |
| 100 | 50 | 57 | 210 | 26×39×32 | 3000 | 376 470 |
737 920 |
25.1 34.6 |
123 174 |
25.1 34.6 |
123 174 |
30.4 38.1 |
21.8 26.1 |
42.6 |
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