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Seiko 5Y30-7B20
Lift Angle: 44°
The Seiko 5Y30-7B20 watch movement is a mechanical movement.
The Seiko 5Y30-7B20 features the following functions:
- Mechanical Movement
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 2457 | Ordinary/None | Buy staff |
| 3385 | Ordinary/None | Buy staff |
| 2460 | Ordinary/None | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.40 x 0.180 x 480 x 15.0 mm | GR3847 | Manual | Buy mainspring |
| 1.40 x 0.180 x 460 x 14.5 mm | GR3846 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| MAINSPRING 1.40-.18-480 15 | MS-55R | GR 3857 | Buy part |
| STAFF, ROLLER .57 | 100/541 | Buy part | |
| STAFF, ROLLER .70 | 100/420 | Buy part | |
| STEM | 200/425F | Buy part | |
| WHEEL, ESCAPE | 702/GRU V4 | Buy part |
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