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Hamilton 630
Basic Information
| Name | Hamilton 630 |
|---|---|
| Alternative Name | Buren 1321 |
| Base Calibre | Buren 1321 |
| Manufacturer | Hamilton |
| Launch Year | 1965 |
| Caliber Family | Description 628: date for domed dial 629: second, date for domed dial 630: second, date for flat dial Hamilton designations of other Buren calibres will be added, as soon as they become known. Related calibers Hamilton 628, Hamilton 629, Hamilton 630 |
| Is COSC certified | No |
Timegrapher
Beat rate
19,800 bph
Frequency
2.75 Hz
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Technical Details
| Lignes Dimensions | 12.5 ‴ |
|---|---|
| Dimensions | 28.5 mm |
| Height | 3.25 mm |
| Further Measures | Mounting Diameter (Dm): 28.15mm Rotor: 0.35mm Stem height (T): 1.8mm Mounting Height (F): 1.5mm |
| Power Reserve | 54 hours |
| Frequency | 19,800 vph |
| Jewels | 17 |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Shock Protection | Incabloc |
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Automatic |
| Rotor Type | Micro-Rotor |
| Escapement Type | Swiss Lever |
| Control Type | Balance Wheel |
| Winding Type | Automatic (Rotor-Driven) |
| Setting Type | Stem Set (Crown Pull) |
Additional Information
| Hand Sizes | 1.40 x 0.80 x 0.18mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: 1965- micro rotor double excenter regulator for curb pins and stud carrier selfwinding gear with direction switching by a pinion floating between two huge jewels (Fig.4) indirectly driven minute and second allow a low profile (details cf. Buren 1320) since 1966/67 minor modifications of base plate and simplified date driver (cf: Hamilton 629) Other data: balance staff: U3085 stem: W3060 mainspring / battery: 1.0 x 9.5 x 0.10mm |
| Signature | 1967: SX, F, M7, Bulova Watch Co, 12ECACD, Swiss, 30 Jewels; Incabloc (Buren 1321, Bulova 12ECACD) |
| Import Codes |
|
Compatible Parts
116 other caliber(s) share compatible parts with this caliber.
87 compatible part(s) available — Supporter feature.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | May 26, 2026, 4:43:50 AM |
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