ST-B linear motion bearing with Short stroke
The ST series linear bearing is precisely grinded into the cylindrical shape. It is assembled with ball retainers and steel balls inside the bushing. The steel balls are arranged in a staggered form, in order to uniformly withstand the load. In addition, the ball retainer undergoing drilling is manufactured from aluminum alloy having light weight and high rigidity, and is able to support high-speed movement. Furthermore, the thrust ring and snap ring are mounted on both sides of the internal bushing surface, in order to prevent the ball retainer out of range.
The linear bearing has the advantages of small friction coefficient, high precision and rigidity, as well as low price. Therefore, this product is widely used in the printing machinery, punching machine, press feeder, roll corrector, textile machine, distortion measurement equipment, optical measuring device, duplicating machine, and so on.
The ST linear motion bearing is characterized by a small coefficient of friction due to the point contact between the balls and the rolling surface. In addition, the balls inside the retainer are separated to allow the linear motion bearing to perform rolling movement with low friction.
Technical Parameters
| Designation |
Max. stroke mm |
Number of rows |
Major dimensions and tolerance |
Basic load rating |
Weight (gf) |
| |
dr |
|
D |
|
L |
l mm |
T mm |
t mm |
d mm |
r mm |
Dynamic C N |
Static Co N |
| mm |
tolerance µ m |
mm |
tolerance µ m |
mm |
tolerance µ m |
| ST 6 |
20 |
3 |
6 |
+22 +13 |
12 |
0 -11 |
20 |
0 -0.2 |
11.3 |
1.1 |
0.5 |
1 |
0.5 |
216 |
147 |
8.9 |
| ST 8 |
24 |
3 |
8 |
15 |
0 -13 |
24 |
17.1 |
1.5 |
0.5 |
1.2 |
22 |
343 |
245 |
15.6 |
| ST 10 |
30 |
3 |
10 |
19 |
20 |
22.7 |
1.5 |
0.5 |
1.2 |
0.5 |
637 |
461 |
28.8 |
| ST 12 |
32 |
3 |
12 |
+27 +16 |
23 |
32 |
24.5 |
1.5 |
0.5 |
1.2 |
0.5 |
1,070 |
913 |
42 |
| ST 16 |
40 |
3 |
16 |
28 |
37 |
29.1 |
1.5 |
0.7 |
1.3 |
0.5 |
1,180 |
990 |
71 |
| ST 20 |
50 |
3 |
20 |
+33 +20 |
32 |
0 -16 |
45 |
35.8 |
2 |
0.7 |
1.5 |
0.5 |
1,260 |
1,170 |
99 |
| ST 25 |
50 |
3 |
25 |
37 |
45 |
0 -0.3 |
35.8 |
2 |
0.7 |
1.6 |
1 |
1,330 |
1,330 |
117 |
| ST 30 |
82 |
3 |
30 |
45 |
65 |
53.5 |
2.5 |
1 |
2 |
1 |
2,990 |
3,140 |
205 |
| ST 35 |
92 |
3 |
35 |
+41 +25 |
52 |
0 -19 |
70 |
58.5 |
2.5 |
1 |
2 |
1.5 |
3,140 |
3,530 |
329 |
| ST 40 |
108 |
3 |
40 |
60 |
80 |
68.3 |
2.5 |
1 |
2 |
1.5 |
4,120 |
4,800 |
516 |
| ST 50 |
138 |
3 |
50 |
72 |
100 |
86.4 |
3 |
1 |
2.5 |
1.5 |
5,540 |
6,910 |
827 |
| ST 60 |
138 |
3 |
60 |
+49 +30 |
85 |
0 -22 |
100 |
86.4 |
3 |
1 |
2.5 |
2 |
5,980 |
8,230 |
1,240 |
| ST 80 |
132 |
3 |
80 |
110 |
100 |
0 -0.4 |
86 |
3 |
1.5 |
2.5 |
2 |
7,840 |
12,200 |
2,050 |
| ST 100 |
132 |
3 |
100 |
+58/+36 |
130 |
0/-25 |
100 |
86 |
3 |
1.5 |
2.5 |
2 |
8,430 |
14,700 |
2,440 |
The ST-B linear bushing has the same size but shorter stroke than the ST series. With the rated load 2 times as large as the ST type, it is used to carry the heavy load. This heavy duty linear bushing adopts the lightweight, space-saving and compact design. Composed of a thin sleeve and steel balls, it can be manufactured with a minimal outside diameter.
Technical Parameters
| Designation |
Max. stroke mm |
Number of rows |
Major dimensions and tolerance |
Basic load rating |
Weight (gf) |
| |
dr |
|
D |
|
L |
mm |
T mm |
t mm |
d mm |
r mm |
Dynamic C N |
Static Co N |
| mm |
tolerance µm |
mm |
tolerance µm |
mm |
tolerance µm |
| ST 8B |
8 |
6 |
8 |
+22 +13 |
15 |
0/-11 |
24 |
0 -0.2 |
17.1 |
1.5 |
0.5 |
1.2 |
0.5 |
549 |
490 |
16.8 |
| ST 10B |
8 |
6 |
10 |
19 |
30 |
22.7 |
1.5 |
0.5 |
1.2 |
0.5 |
1,030 |
931 |
31.2 |
| ST 12B |
8 |
6 |
12 |
+27 +16 |
23 |
0 -13 |
32 |
24.5 |
1.5 |
0.5 |
1.2 |
0.5 |
1,720 |
1,630 |
46 |
| ST 16B |
16 |
6 |
16 |
28 |
37 |
29.1 |
1.5 |
0.7 |
1.3 |
0.5 |
1,910 |
1,980 |
75 |
| ST 20B |
20 |
6 |
20 |
+33 +20 |
32 |
0 -16 |
45 |
35.8 |
2 |
0.7 |
1.5 |
0.5 |
2,060 |
2,320 |
106 |
| ST 25B |
20 |
6 |
25 |
37 |
45 |
0 -0.3 |
35.8 |
2 |
0.7 |
1.6 |
1 |
2,170 |
2,670 |
125 |
| ST 30B |
44 |
6 |
30 |
45 |
65 |
53.5 |
2.5 |
1 |
2 |
1 |
4,800 |
6,270 |
220 |
| ST 35B |
54 |
6 |
35 |
+41 +25 |
52 |
0 -19 |
70 |
58.5 |
2.5 |
1 |
2 |
1.5 |
5,050 |
7,060 |
346 |
| ST 40B |
66 |
6 |
40 |
60 |
80 |
68.3 |
2.5 |
1 |
2 |
1.5 |
6,710 |
9,560 |
540 |
| ST 50B |
88 |
6 |
50 |
72 |
100 |
86.4 |
3 |
1 |
2.5 |
1.5 |
8,970 |
13,800 |
862 |
| ST 60B |
88 |
6 |
60 |
+49 +30 |
85 |
0 -22 |
100 |
86.4 |
3 |
1 |
2.5 |
2 |
9,700 |
16,500 |
1290 |
| ST 80B |
76 |
6 |
80 |
110 |
100 |
0 -0.4 |
86 |
3 |
1.5 |
2.5 |
2 |
12,700 |
24,300 |
2110 |
| ST 100B |
76 |
6 |
100 |
+58/+36 |
130 |
0/-25 |
100 |
86 |
3 |
1.5 |
2.5 |
2 |
13,700 |
29,400 |
2520 |
As a professional standard linear bearing manufacturer and supplier in China, we also offer adjustable type linear bearing, round flange mount linear bearing, SC-UU slide block, SHF horizontal shaft support, and much more.
The LM-UU linear motion bearing is manufactured in line with Asia's mechanical standards, so that it is suitable for use in Asia. The products we offer include many models with the applicable shaft nominal diameter ranging from 3mm to 150mm. They differ in the main dimensions and tolerances, the degree of eccentricity, the maximum radial clearance, and the rated load. Therefore, this linear bearing for Asia market can be used in different sizes and models of machinery, serving to reduce friction and extend life of the equipment.
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