Omega CALIBRE 2628 Kurzanleitung
2628
2628
2628 A
111/2’’’
Ø 25,60 mm
Version A Version B
123
Height on movement 5.20 mm
Power reserve
Number of jewels
Frequency
Lift angle
44 h
27
4 Hz (28’800 A/h)
30° / 38°
48 h
27
3.5 Hz (25’200 A/h)
38°
CALIBRE
2628
Automatic movement, Co-Axial escapement, date, Time zone function, GMT, COSC-certified,
Omega balance system without index. GMT, hour, minute and second hands in centre.
Technical Guide TG-19-C-006-E D
Produced by : pelrom Date: 09.10.2008 3
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D - 2628 /1
Page
Calibre 2628 1
General information for Calibre 2628 3-4
Date correction / Improvements on version B / Complete balance bridge 3
Torques according to the screw threads / Measuring instruments 3
Technical modifications on version «A» and «B» / Hand fitting / Tools / Lubricants 4
Exploded views for Calibre 2628 7-11
Dial side 7
Spare parts list for Calibre 2628 11-14
Spare parts list 11
Specific information for Calibre 2628 15-19
Assembling of escapement system / Lubrication of the escapement 15
Contents
Movement side 8
Movement side 9
Dial side 10
Assembling of the balance bridge / Disassembling of the balance bridge 16
Runners for hands setting and hand setting force / Height of hands 17
Components not requiring epilam coating 18
Special parameter settings / Timing key 19
Spare parts list 12
Spare parts list 13
Spare parts list 14
Differences between calibre 2628A and 2628B 5-6
Differences between calibres 5-6
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D - 2628 /2
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D - 2628 /3
Date correction
The date Correction is not recommended between 10 p.m.
and 2 a.m.
Improvements on version B
Complete balance bridge (Ref. 10.058°)
Chronometer balance bridges are not available
(see CS-Info. Calibre No. 33).
Tightening and untightening torques according to screw
thread size
Screw Ø Tightening torque target cNm Untightening torque mini cNm
Øthreads ≤S 0.50 mm 1.0 0.7
Øthreads S 0.6 mm 1.4 0.8
Øthreads S 0.7 mm 1.8 0.9
Øthreads S 0.8 mm 2.2 1.1
Øthreads S 0.9 mm 2.6 1.3
Øthreads S 1.0 mm 3.0 1.6
Øthreads S 1.2 mm 3.5 2.0
Øthreads S 1.4 and > 4.0 2.5
Type of intervention and the required
«Measure Instrument»
General information for Calibre 2628
Version A Version B
Quality of adjustment:
Good
Quality of adjustment:
Improved
Self-starting: Medium Self-starting: Good
Interventions Minimum equipment required Comments
Complete or Partial maintenance
service Co-Axial 3.5 Hz & 4 Hz
- Watch Expert II (White case)
- Chronoscope M1 (up-dated version)
- Chronoscope S1
Rate adjustment on new watches:
(Co-Axial 3.5 Hz & 4 Hz)
- Watch Expert (red case)
- Wicometer Professionnel
- Chronoscope M1 (old version)
Important: The amplitude will
not be indicated precisely.
This is acceptable for the
rate adjustment only!
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D - 2628 /4
General information for Calibre 2628
Technical modifications on version «A» and «B»
Hand fitting
To fit the hands, the movement must be placed in a suitable,
well-adjusted movement holder.
Tools Ref.
Hand fitting tool kit 507 0011
Movement holder for hand fitting 507 0017
Mainspring winder 502 150 0009
Timing key 506 0042
Tool for checking the escapement
functions 506 0002
Ball bearing set 502 S03 SET
Key-bolt key for oscillating weight 502 200 0361
Holder for oscillating weight 502 100 0381
Lubricants Ref.
Moebius SYNT-A-LUBE 9010 (2ml) 504 200 0001
Moebius HP-500 504 5012
Moebius SYNT HP-1300 Sans Colorant 504 5013
Moebius 9504 504 5014
Kluber P125 504 100 0071
Lubeta V105 504 5005
Intermediate escape wheel
Old version Risk New version Improvements Notes
7222500C30039
Black residues within
the engagement can
cause low amplitude or
a stop of the watch.
The old version is yellow.
7222500C30039
Improvement of surface
and material.
The new version is grey.
Available since 21/2008
The new version must
automatically be assembled
if black residues within the
engagement are visible.
2628A (4 Hz) 2628B (3.5 Hz)
Mainplate
ref. 72226281002007
Engraving 2628A
ref. 7222628B81002007
Engraving 2628B
Balance bridge
ref. 7222500B10058°
ref. 7222500C10058°
Barrel, complete
ref. 7222500B20010 ref. 722112020010
Mainspring
ref. 7222500B20102 ref. 722112020102
Oscillating weight
2628
2628
ref. 72226282201006
2628B
2628B
ref. 7222628B2201006
Second wheel
ref. 722112830027*
96 teeth and eight arms
ref. 7222628B30027*
105 teeth and five arms
Intermediate escape wheel
ref. 7222500B30039
8-leaf pinion
ref. 7222500C30039
10-leaf pinion
Cutout in upper pivot shank
Co-Axial wheel
ref. 7222500B30040
Pinion Ø = 1.999 mm
ref. 7222500C30040
Pinion Ø = 2.119 mm
Pallet fork
Old shape
ref. 7222500B40010
New shape
ref. 7222500C40010
Differences between versions 2628A and 2628B
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D -2628 /5
Differences between versions 2628A and 2628B
2628A (4 Hz) 2628B (3.5 Hz)
Balance complete with stud
Inertia
Diameter
Balance rim thickness
Pivots
Shock absorber
Rate correction with 1 screw-revolution (on both screws)
ref. 7222500B4005021
7.2 (mgcm2)
8.54 mm
0.37 mm
0.08 mm cylindrical
0.09 mm = pivot hole Ø
57 seconds
ref. 7222500C4005021
9.4 (mgcm2)
8.70 mm
0.45 mm
0.07 mm conical
0.08 mm = pivot hole Ø
86 seconds
Stop lever
ref. 722250056070 ref. 7222500C56070
Shock-absorber, upper
ref. 722112070530 ref. 7222500C70530
Shock-absorber, lower
ref. 722112070531 ref. 7222500C70531
In settings, upper
ref. 722112070640 ref. 7222500C70640
In settings, lower
ref. 722112070641 ref. 7222500C70641
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D -2628 /6
Parts listed in order of assembly
1 = 31120
2 = 31121
3 = 5101021
4 = 53022
5 = 5108006
6 = 51050
7 = 51091
8 = 3503 (1x)
9 = 31100
9
5
8
7
4
6
3
1
2
Moebius SYNT HP-1300 Sans Colorant
Moebius 9504
Exploded views - Dial side for Calibre 2628
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D -2628 /7
8
7
6
5
1
3
11
12
18
17
16
15
14
19
920
24
25
10
21
4
23
22
Versions A&B
see page 5
Restrictions:
see page 3
Versions A&B
see page 6
2
13
See page 15
Versions A&B
see page 5
Versions A&B
see page 5
Versions A&B
see page 5
Parts listed in order of assembly
1 = 1004107
2 = 32033
3 = 31023
4 = 31024
5 = 31021
6 = 51120
7 = 81036
8 = 3509 (1x)
9 = 30012
10 = 20010
11 = 31020
12 = 1004107
13 = 3503 (3x)
14 = 30039
15 = 30025
16 = 30027*
17 = 1004807
18 = 3505 (1x)
19 = 30040
20 = 40010
21 = 1005707
22 = 3511 (1x)
23 = 3511 (1x)
24 = 10058°
4005021
Moebius SYNT-A-LUBE 9010
Moebius SYNT HP-1300 Sans Colorant
Moebius SYNT HP-500
Moebius SYNT HP-1300 Sans Colorant
Kluber P125
Exploded views - Movement side for Calibre 2628
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D -2628 /8
Parts listed in order of assembly
1 = 56070
2 = 1203007
3 = 32032
4 = 32031
5 = 32037
6 = 52040
7 = 1205107
8 = 3504 (1x)
9 = 2201006
10 = 3507 (3x)
11 = 3503 (3x)
12 = 52041
13 = 12124
14 = 3506 (1x)
11
12
14
13
1
2
3
4
5
6
9
7
8
10
11
2628
2628
Versions A&B
see page 6
See CS-Info Calibre no. 26 Lubeta V105
When Lubeta V105 is available, do not
use Moebius 9010
Moebius SYNT-A-LUBE 9010
Moebius SYNT HP-1300 Sans Colorant
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D - 2628
Exploded views - Movement side for Calibre 2628
/9
Parts listed in order of assembly
1 = 31083*
2 = 31041
3 = 31100
4 = 31101
5 = 10062
6 = 3503 (1x)
7 = 31101
8 = 33032
9 = 31046*
10 = 33014
11 = 1601006
12 = 3502 (3x)
13 = 91440
14 = 53080
15 = 13111
16 = 3501 (1x)
17 = 13105 (2x)
18 = 3500 (2x)
19 = 3104706*
Moebius 9010
Moebius SYNT HP-1300 Sans Colorant
Moebius SYNT HP-1300 Sans Colorant
Moebius 9504
OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D - 2628
Exploded views - Dial side for Calibre 2628
/10
*
5
6
2
1
7
3
15
16
18
14
8
10
19
13
17
11
12
4
9
Additional lubrication:
See CS-Info Calibre no. 32
Lubrication spot (Moebius 9010, small quantity)
at the exit of the second wheel axe - centre tube.
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