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Bettlach 8501
(EB)
Jewels: 15
Lift Angle: 49°
Power Reserve: 45 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1939-1963
Diameter: 30.5 mm
Height: 4.05 mm
Hands: 1.40 x 0.75 / 0.19 mm
The Bettlach 8501 is a manual wind watch movement that was produced from 1939 to 1963. A total of 3,000,000 units were made during this period. The movement features a Breguet hairspring and was equipped with Incabloc shock protection from 1943 onwards. It incorporates a sub-second function as well.
The Bettlach 8501 features the following functions:
- Incabloc Shock Protection
- Manual Winding
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 1855 | Ordinary/None | Buy staff |
| 1858 | Ordinary/None | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.140 x 320 x 11.5 mm | GR4227 | Manual | Buy mainspring |
| 1.50 x 0.130 x 360 x 11.0 mm | GR4198 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
|---|---|---|---|
| See More |
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Parts Listing
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