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Linear guide standard series products
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Heavy Load Ball TypeLinear Guideway
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THK NRS45CX NRS45CX1SS Linear Guide High Rigidity

Structure and Features

The rolling surface of the steel ball is processed by special equipment and extremely high-precision processing technology. The THK NRS45CX Linear Guide achieves deep groove rolling surface processing that is closer to the ball diameter than previous products. As a result, the high rigidity, vibration and impact resistance, and damping (damping) required for machine tools are improved, making it a type that can withstand heavy loads.

The LM rolling guide of the THK NRS45CX Linear Guide has very high rigidity, so it is structurally susceptible to the misalignment of the center line of the mounting surface and the assembly error. If affected by this, it may shorten the service life and cause poor operation. Please consult THK when selecting.

[Improved damping effect]

When the machine tool (with the THK NRS45CX Linear Guide) is not cutting, the L rolling guide moves lightly as usual. When the machine tool cuts the workpiece, the LM rolling guide bears the cutting load, the contact area between the steel ball and the rolling surface increases, and the rolling motion and sliding motion are mixed together to become appropriate rolling and sliding motion.

[Extremely Reasonable LM Guide]

The NRS type does not produce excessive differential sliding as seen in the Gothic arch groove, and can move lightly during rapid feeding, achieving high positioning accuracy. Therefore, the THK NRS45CX Linear Guide is an extremely reasonably designed LM Guide.


THK model NRS 25CX NRS 25LCX NRS 30CX NRS 30LCX NRS 35CX NRS 35LCX NRS 45CX NHS 45LCX NRS 55CX NRS 55LCX NRS 65CX NRS 65LCX

NRS-CX
Model No. Outer dimensions LM block dimensions H₃
Height

M

Width

W

Length

L

B C S H L1 T T₁ K N fo E eo D₀ Grease
nipple
NRS 25CX
NRS 25LCX
31 72 82.8
102
59 45 M8 6.8 61.4
80.6
14.8 16 25.5 7.8 5.1 12 4.5 3.9 B-M6F 5.5
NRS 30CX
NRS 30LCX
38 90  98
120.5
72 52 M10 8.5 72.1
94.6
16.9 18.1 31 10.3 7 12 6.5 3.9 B-M6F 7
NRS 35CX
NRS 35LCX
44 100 109.5
135
82 62 M10 8.5  79
104.5
18.9 20.1 35 12.1 8 12 6 5.2 B-M6F 9
NRS 45CX
NRS 45LCX
52 120 138.2
171
100 80 M12 10.5 105
137.8
20.6 22.1 40.4 13.9 8 16 8.5 5.2 B-PT1/8 11.6
NRS 55CX
NRS 55LCX
63 140 163.3
200.5
116 95 M14 12.5 123.6
160.8
22.5 24 49 16.6 10 4F 5.2 B-PT1/8 14
NRS 65CX
NRS 65ICX
75 170 186
246
142 110 M16 14.5 143.6
203.6
26 28 1(l 19 15 16 8.7 8.2 B-PT1/8
NRS-CX3
LM rail dimensions Basic load rating Static permissible moment kN·m* Mass
Width

W₁
0
-0.05

W₂ 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 23.5 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
0.6
0.8
2.9
31 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
1.1
1.5
4.2
 34 33 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
1.6
2
6
 45 37.5 29 105 14×20×17 3000 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
2.7
3.6
9.5
 53 43.5 36.5 120 16×23×20 3000 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
4.5
5.9
14
 63 53.5 43 150 18X26×22 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
7.8
11
19.6

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