ETA 1100 – interchangeable spare parts
ETA 1100 movement
Which spare parts fit the ETA 1100 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
19Parts with interchange data
29Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of ETA and the original spare-part labels. All information has been carefully checked but is provided without guarantee. Please verify the interchangeability yourself before fitting, especially the height, diameter and execution of the part.
🛒 Spare parts for ETA 1100 in our shop
🔧 Interchangeable parts
| Part no. | Description | Also fits |
|---|---|---|
| 311ISO 70.800 | Upper cap jewel with end-piece, f. balance | |
| 330ISO 70.801 | Lower cap jewel with end-piece, f. balance | |
| 336ISO 70.806 | Upper cap-jewel with end-piece, for escape wheel | |
| 342ISO 70.881 | Bearing-plate, for sweep-second | |
| 343ISO 70.891 | Bearing plate, for sweep second wheel | |
| 346ISO 70.807 | Lower cap jewel with end-piece, f. esc. wh. | |
| 401ISO 51.010 | Winding stem | |
| 407ISO 31.121 | Sliding pinion | |
| 410ISO 31.120 | Winding pinion | |
| 415ISO 31.020 | Ratchet wheel | |
| 420ISO 31.023 | Crown wheel | |
| 422ISO 81.067 | Crown wheel ring | |
| 425ISO 51.120 | Click | |
| 430ISO 61.080 | Click spring | |
| 435ISO 51.050 | Yoke | |
| 440ISO 61.100 | Yoke spring | |
| 443ISO 51.080 | Setting lever | |
| 443/5443ISO 51.080.06/.01 | Setting lever | |
| 702C | Escape wheel and pinion, pivoted, for two end-pieces |
Source: original interchangeability lists of ETA (checked transcription) and checked original spare-part labels · as of 2026-10-18. Height / execution: the part fits only in this height or execution.
🌀 Matching mainspring
Mainspring dimensions for ETA 1100 (height × diameter × thickness × length) and matching mainspring in our shop:
