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| Position tolerances |
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In a ground ballscrew the geometric accuracy of the elements must ensure a perfect rotation of the assembly.
For that IPIRANGA ground ballsrews ground are controlled with the latest technology during the whole process according to the actual requeriments of quality.
Las tolerancias de husillo y tuercas tienen distintos parámetros, en función de los diámetros y longitudes. Las dimensiones sin indicación son en mm y las tolerancias en µm.
|
TEST |
DESCRIPTION |
DATA |
QUALITY CLASS º |
E5 |
Radial run-out control t5 of screw |
d0 |
L5 |
IT1 |
IT3 |
IT5 |
| |
|
|
t5p
para L5 |
16 |
25 |
160 |
20 |
25 |
32 |
25 |
50 |
315 |
50 |
100 |
630 |
100 |
125 |
1250 |
L1/d0 |
t5mp for L1
> 4 L5 |
> |
< |
| |
40 |
40 |
50 |
64 |
40 |
60 |
60 |
75 |
96 |
60 |
80 |
100 |
125 |
160 |
80 |
100 |
160 |
200 |
256 |
E6 |
Radial run-out control t6 of diameter C for bearing Normal conditions:L6<= L when L6 > L, is valid with: t6a <= t7p · L6 / L |
d0 |
L |
t6p for L |
> |
< |
16 |
20 |
80 |
10 |
12 |
20 |
20 |
50 |
125 |
12 |
16 |
25 |
50 |
125 |
200 |
16 |
20 |
32 |
E7 |
Radial run-out control t7 of terminal diameter, relating to diameter C for bearing. Normal condition: L7 <= L when L7 > L is valid with: L7a <= t7p · L7 / L |
d0 |
L |
t7p for L |
> |
< |
| 16 |
20 |
80 |
5 |
6 |
8 |
| 20 |
50 |
125 |
6 |
8 |
10 |
| 50 |
125 |
200 |
8 |
10 |
12 |
E8 |
Axial run-out control t8 on the face support for bearing relating to C. |
d0 |
IT1 |
IT3 |
IT5 |
> |
< |
t8p |
16 |
3 |
3 |
4 |
5 |
63 |
125 |
4 |
5 |
6 |
E9 |
Axial run-out control t9 of lateral face of the flange for preload nuts. |
D6 |
t9p |
> |
< |
28 |
63 |
12 |
16 |
20 |
63 |
125 |
16 |
20 |
25 |
125 |
250 |
20 |
25 |
32 |
E10 |
Axial run-out control t10 of positioning diameter D1, for preloaded nuts. |
D1 |
t10p |
> |
< |
28 |
63 |
12 |
16 |
20 |
63 |
125 |
16 |
20 |
25 |
25 |
200 |
20 |
25 |
32 |
E12 |
Control of dynaminc preload torque of the nuts Tp |
Tpo (Nm) |
for Lu/d0<40
with Lu < 4000 ATpp (% de Tpo) |
> |
< |
0,2 |
0,4 |
35 |
40 |
50 |
0,4 |
0,6 |
30 |
35 |
40 |
0,6 |
1 |
25 |
30 |
35 |
1 |
2,5 |
20 |
25 |
30 |
2,5 |
6,3 |
15 |
20 |
25 |
6,3 |
10 |
- |
15 |
20 |
Tpo (Nm) |
for Lu/d0
< 60 with Lu < 4000 ATpp (% de Tpo) |
> |
< |
0,2 |
0,4 |
40 |
50 |
60 |
0,4 |
0,6 |
35 |
40 |
45 |
0,6 |
1 |
30 |
35 |
40 |
1 |
2,5 |
25 |
30 |
35 |
2,5 |
6,3 |
20 |
25 |
30 |
6,3 |
10 |
- |
20 |
25 |
Tp0 (Nm) |
for Lu >
4000 ATpp (% deTpo) |
> |
< |
- |
0,6 |
No specification |
0,6 |
1 |
- |
40 |
45 |
1 |
2,5 |
- |
35 |
40 |
2,5 |
6,3 |
- |
30 |
35 |
6,3 |
10 |
- |
25 |
30 |
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