Mainspring for Amida 151
Height, diameter, thickness and length
📏 Mainspring dimensions
| GR no. | Height | Diameter | Thickness | Length | Type |
|---|---|---|---|---|---|
| 4640 | 1.60 mm | 15.0 mm | 0.16 mm | 540 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 4.
🛒 Matching mainspring in our shop
🔄 Alternative mainsprings
Same height, diameter equal or slightly smaller. Please check yourself before ordering.
🔗 According to the catalogue, the same mainspring (GR 4640) also fits
❓ Frequently asked questions
Which mainspring fits the Amida 151?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.60 × 15.0 × 0.16 × 540 mm (GR 4640, hand-wound, normal end hook).
Is this mainspring available in the shop?
An exact match is not in stock right now, but 1 similar mainsprings are possible alternatives.
Which other calibers use mainspring GR 4640?
According to the catalogue also in Lapanouse 13" - 22, Lapanouse 13/22 - 20, Lapanouse 133, Newmark 13", Oris 91-92-93-13".
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