# Precision data

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### Positioning Accuracy

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| Measuring system | Bidirectional repeatability |
| ---------------- | --------------------------- |
| 1µm magnetic     | < ± 5.0µm                   |

| Measuring system | Length expansion measuring scale |
| ---------------- | -------------------------------- |
| 1µm magnetic     | 11.0µm/m/°C                      |

***

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### Slide guide

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<figure><img src="/files/9OQIZ35p1PjE1MUEEvzC" alt=""><figcaption></figcaption></figure>
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The ELAX® Ex models use crossed roller guides with hardened rollers.
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The ELAX® Ex linear motor slides are supplied with the following tolerances as standard:
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<table><thead><tr><th width="124" align="right">Ex F20</th><th>Running Accuracy horizontal EYX [µm]</th><th>Running Accuracy vertical EZX [µm]</th><th>Tilt Error QX (roll) [arcsec]</th><th>Tilt Error QY (pitch) [arcsec]</th><th>Tilt Error QZ (yaw) [arcsec]</th><th>Tolerance Constr. Height [mm]</th></tr></thead><tbody><tr><td align="right">Ex 30F20</td><td>± 5</td><td>± 5</td><td>± 50</td><td>± 150</td><td>± 120</td><td>± 0.1</td></tr><tr><td align="right">Ex 50F20</td><td>± 8</td><td>± 8</td><td>± 50</td><td>± 150</td><td>± 130</td><td>± 0.1</td></tr><tr><td align="right">Ex 80F20</td><td>± 10</td><td>± 10</td><td>± 60</td><td>± 170</td><td>± 150</td><td>± 0.1</td></tr><tr><td align="right">Ex 110F20</td><td>± 12</td><td>± 12</td><td>± 60</td><td>± 170</td><td>± 150</td><td>± 0.1</td></tr><tr><td align="right">Ex 150F20</td><td>± 15</td><td>± 15</td><td>± 70</td><td>± 200</td><td>± 170</td><td>± 0.1</td></tr></tbody></table>

Values for unloaded single axis, measured on a flat granite surface.


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