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Bulova 10BZAC
Basic Information
| Name | Bulova 10BZAC |
|---|---|
| Manufacturer | Bulova |
| Launch Year | 1959 |
| Caliber Family | Description 10.5" , screw balance: 10BZ: manual wind, sub second 10BZA: automatic, sub second 10BZAC: automatic, sweep second 10BZC: manual wind, sweep second 11.5" , screw balance: 11Af: manual wind, sub second 11AFA: automatic, sub second 11AfAC: automatic, sweep second 11AFACD: automatic, sweep second, date 11AfC: manual wind, sweep second 11AFCD: manual wind, sweep second, date 11AFD: manual wind, sub second, date 11AFF: manual, wind no second 11AFFA: automatic, no second 11.5" , ring balance: 11AL: manual wind, sub second 11ALA: automatic, sub second 11ALAC: automatic, sweep second 11ALACD: automatic, sweep second, date 11ALC: manual wind, sweep second 11ALCD: manual wind, sweep second, date 11ALD: manual wind, sub second, date 11ALL: manual, no second 11ALLA: automatic, no second Likely not all feasable variants were actually were produced. Here only actually existing are listed, probably not all. Related calibers Bulova 10BZ, Bulova 10BZA, Bulova 10BZAC, Bulova 10BZC, Bulova 11AF, Bulova 11AFA, Bulova 11AFAC, Bulova 11AFACD, Bulova 11AFC, Bulova 11AFCD, Bulova 11AFD, Bulova 11AFF, Bulova 11AFFA, Bulova 11AL, Bulova 11ALA, Bulova 11ALAC, Bulova 11ALACD, Bulova 11ALC, Bulova 11ALCD, Bulova 11ALD, Bulova 11ALL, Bulova 11ALLA |
| Is COSC certified | No |
Timegrapher
Beat rate
18,000 bph
Frequency
2.5 Hz
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Technical Details
| Lignes Dimensions | 10.5 ‴ |
|---|---|
| Dimensions | 23.7 mm |
| Height | 5.3 mm |
| Further Measures | Mounting Diameter (Dm): 23.3mm Stem height (T): 1.4mm Mounting Height (F): 1.0mm |
| Power Reserve | 40 hours |
| Frequency | 18,000 vph |
| Jewels | 30 |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Shock Protection | KIF |
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Automatic |
| Rotor Type | Central 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 0.85 x 0.18mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | United States |
| Notes | Remarks: 1959-1963 Other data: balance staff: U3316 stem: W2774 Ranfft mentioned about this caliber: There are variants with this quantity of jewels 23, 30 |
| Signature | 1960: M0, Bulova-U.S.A., 6 Adjustments, Heat- Cold- Isochronism- 3 Positions, 30 Jewels; Kif-Flector |
| Import Codes |
|
Compatible Parts
122 other caliber(s) share compatible parts with this caliber.
128 compatible part(s) available — Supporter feature.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | Apr 23, 2025, 11:31:15 PM |
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