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Zenith 2540
Ligne: 12'''
Jewels: 1/17/21
Lift Angle: 42°
Power Reserve: 36 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1975
Diameter: 27 mm
Height: 4.6 mm
Hands: 1.80 x 1.30 x 0.20 mm
Base: Bettlach 8800
The Zenith 2540 watch movement features a pin-lever escapement and an indirectly driven minute hand, enabling a big balance and low profile design. Optional shock protection is provided by elastical spiral balance spokes. This movement is commonly associated with the signature 8800. It offers manual winding, a sweep second function, a calendar with the date set by changing from 20:15-24h, and was primarily used during the period around 1975.
The Zenith 2540 features the following functions:
- Calendar
- Date: set by changing 20:15-24h
- Manual Winding
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.35 x 0.130 x 360 x 11.5 mm | Manual | Buy mainspring | |
| 1.35 x 0.135 x 340 x 11.0 mm | GR3518 | Manual | Buy mainspring |
| 1.30 x 0.130 x 340 x 11.0 mm | GR3339 | 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 |
|---|---|---|---|
| BALANCE COMPLETE | 721/1284 | 721/1284 | Buy part |
| CANNON PINION, SS HT 2.70 | 245/856 | 243/BET 8805 | Buy part |
| ESCAPE WHEEL, C/S | 704/305 | 790/2/BET 8800 | Buy part |
| ESCAPE WHEEL, S/S | 705/998 | 790/BET 8800 | Buy part |
| FOURTH WHEEL, SS HT 6.0 | 227/512 | 227/BET 8800 | Buy part |
| HOUR WHEEL, DOUBLE 1.85 | 250/1246 | 2558/BET 8804 | Buy part |
| MAINSPRING 1.30-.13-340 11 | MS-419P | GR 6333 | Buy part |
| PALLET (FINGER) | 710/967 | 800/BET 8800 | Buy part |
| PALLET ARBOR | 72S/330P | 714/BET 8800 | Buy part |
| ROLLER, FINGER | 82S/337R | Buy part | |
| SAMSON MSPG. | 4580 | Buy part | |
| STAFF, REG/SHOCK | 100/2237 | Buy part | |
| STAFF, W/FINGER | 723/1030 | 795/BET 8800 | Buy part |
| STEM, MALE | 360/348 | 360/BET 8800 | Buy part |
| STEM, T6 THREAD 1.20 | 200/1474F | 401/BET 8800 | Buy part |
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