Mainspring for Chezard 40
Height, diameter, thickness and length
📏 Mainspring dimensions
| GR no. | Height | Diameter | Thickness | Length | Type |
|---|---|---|---|---|---|
| 2918 | 1.20 mm | 8.0 mm | 0.10 mm | 260 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 38.
🛒 Matching mainspring in our shop
Only mainsprings with exactly the same height, thickness and length are shown; the diameter is equal or up to 1 mm smaller – a smaller spring settles in the barrel.
🔗 According to the catalogue, the same mainspring (GR 2918) also fits
❓ Frequently asked questions
Which mainspring fits the Chezard 40?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.20 × 8.0 × 0.10 × 260 mm (GR 2918, hand-wound, normal end hook).
Is this mainspring available in the shop?
Yes, Master Watch Parts currently has 1 matching mainsprings in stock.
Which other calibers use mainspring GR 2918?
According to the catalogue also in Aster 10 1/2 - 23,7, Movado 550, Recta 16/12.
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