Mainspring for Aurore 40
Height, diameter, thickness and length
📏 Mainspring dimensions
| GR no. | Height | Diameter | Thickness | Length | Type |
|---|---|---|---|---|---|
| 4447 | 1.60 mm | 7.5 mm | 0.08 mm | 280 mm | Hand-wound, normal end hook |
All dimensions in millimetres. The height of a mainspring is often also called its “width”. Source: Générale Ressorts, mainspring catalogue GR 2 (March 1974), page 21.
🛒 Matching mainspring in our shop
🔄 Alternative mainsprings
Mainspring 1,6x7x0,085x26013,90 € incl. VAT *View item
Mainspring 1,6-7,5-0,08-27011,90 € incl. VAT *View itemSame height, diameter equal or slightly smaller. Please check yourself before ordering.
🔗 According to the catalogue, the same mainspring (GR 4447) also fits
❓ Frequently asked questions
Which mainspring fits the Aurore 40?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.60 × 7.5 × 0.08 × 280 mm (GR 4447, hand-wound, normal end hook).
Is this mainspring available in the shop?
An exact match is not in stock right now, but 2 similar mainsprings are possible alternatives.
Which other calibers use mainspring GR 4447?
According to the catalogue also in Bifora 69 6 3/4 - 8, Bifora 691, Helbros 129, INT.S 36 Z, INT.S 36-21.
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