Description
The trains of balls are designed to a contact angle of 45° which enables it to bear an equal load in radial, reversed radial and lateral directions. Therefore, it can be applied in any installation direction. Furthermore, MSA series can achieve a well balanced preload for increasing rigidity in four directions while keeping a low frictional resistance. This is especially suit to high precision and high rigidity required motion.
The patent design of lubrication route makes the lubricant evenly distribute in each circulation loop. Therefore, the optimum lubrication can be achieved in any installation direction, and this promotes the performance in running accuracy, service life, and reliability.
PMI MSA Series Heavy Load Type MSA-A
MSA A/LA
Note: Request for size 55 and 65 MSA-A / MSA-LA carriage, please refer to MSA-E / MSA-LE carriage type.
Note: The basic dynamic load rating C of ball type is based on the 50 km for nomonal life.
The conversion between C for 50 km and C100 for 100 km is C=1.26 x C100.
Note*: Single: Single carriage/ Double: Double carriages closely contacting with each other.
| Unit:mm |
| Model No. | External dimension | Carriage dimension | ||||||||||||||
| Height H |
Width W |
Length L |
W2 |
H2 |
B |
C |
S × l | L1 | T | T1 | N | G | K | d1 | Grease Nipple | |
| MSA 15A |
24 |
47 | 56.3 | 16 | 4.2 | 38 | 30 | M5 × 11 | 39.3 | 7 | 11 | 4.3 | 7 | 3.2 | 3.3 | G-M4 |
| MSA 20A MSA 20LA |
30 | 63 | 72.9 88.8 |
21.5 | 5 | 53 | 40 | M6 × 10 | 51.3 67.2 |
7 | 10 | 5 | 12 | 5.8 | 3.3 | G-M6 |
| MSA 25A MSA 25LA |
36 |
70 | 81.6 100.6 |
23.5 | 6.5 | 57 | 45 | M8 × 16 | 59 78 |
11 | 16 | 6 | 12 | 5.8 | 3.3 | G-M6 |
| MSA 30A MSA 30LA |
42 | 90 | 97 119.2 |
31 | 8 | 72 | 52 | M10 × 18 | 71.4 93.6 |
11 | 18 | 7 | 12 | 6.8 | 3.3 | G-M6 |
| MSA 35A MSA 35LA |
48 |
100 | 111.2 136.6 |
33 | 9.5 | 82 | 62 | M10 × 21 | 81 106.4 |
13 | 21 | 8 | 11.5 | 8.6 | 3.3 | G-M6 |
| MSA 45A MSA 45LA |
60 | 120 | 137.7 169.5 |
37.5 | 10 | 100 | 80 | M12 × 25 | 102.5 134.3 |
13 | 25 | 10 | 13.5 | 10.6 | 3.3 | G-PT1/8 |
| Model No. | Rail dimension | Basic load rating | Static moment rating | Weight | ||||||||||
| Width W1 |
Height H1 |
Pitch P |
E std. |
D × h × d |
Dynamic C kN |
Static Co kN |
Mp kN-m |
MY kN-m |
MR kN-m |
Carriage kg |
Rail kg/m |
|||
| Single* | Double* | Single* | Double* | |||||||||||
| MSA 15A | 15 | 15 | 60 | 20 | 7.5 × 5.3 × 4.5 | 11.8 | 18.9 | 0.12 | 0.68 | 0.12 | 0.68 | 0.14 | 0.18 | 1.5 |
| MSA 20A MSA 20LA |
20 | 18 | 60 | 20 | 9.5 × 8.5 × 6 | 19.2 23.3 |
29.5 39.3 |
0.23 0.39 |
1.42 2.23 |
0.23 0.39 |
1.42 2.23 |
0.29 0.38 |
0.4 0.52 |
2.4 |
| MSA 25A MSA 25LA |
23 | 22 | 60 | 20 | 11 × 9 × 7 | 28.1 34.4 |
42.4 56.6 |
0.39 0.67 |
2.20 3.52 |
0.39 0.67 |
2.20 3.52 |
0.48 0.63 |
0.62 0.82 |
3.4 |
| MSA 30A MSA 30LA |
28 | 26 | 80 | 20 | 14 × 12 × 9 | 39.2 47.9 |
57.8 77.0 |
0.62 1.07 |
3.67 5.81 |
0.62 1.07 |
3.67 5.81 |
0.79 1.05 |
1.09 1.43 |
4.8 |
| MSA 35A MSA 35LA |
34 | 29 | 80 | 20 | 14 × 12 × 9 | 52.0 63.6 |
75.5 100.6 |
0.93 1.60 |
5.47 8.67 |
0.93 1.60 |
5.47 8.67 |
1.25 1.67 |
1.61 2.11 |
6.6 |
| MSA 45A MSA 45LA |
45 | 38 | 105 | 22.5 | 20 × 17 × 14 | 83.8 102.4 |
117.9 157.3 |
1.81 3.13 |
10.67 16.95 |
1.81 3.13 |
10.67 16.95 |
2.57 3.43 |
2.98 3.9 |
11.5 |
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