Omega CALIBRE 2628 Technical Manual
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Omega CALIBRE 2628 Technical Manual

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Technical Guide
Produced by : pelrom Date: 09.10.2008
11
1/2'''
Ø 25,60 mm
Height on movement
Power reserve
Number of jewels
Frequency
Lift angle
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.
OMEGA SA
CALIBRE
2628
Version A
44 h
27
4 Hz (28'800 A/h)
30° / 38°
WORLD SERVICE ORGANIZATION
TG-19-C-006-E
3
Version B
1 2 3
5.20 mm
48 h
27
3.5 Hz (25'200 A/h)
38°
GT-19-C-006-E - D - 2628
D
/1

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Summary of Contents for Omega CALIBRE 2628

  • Page 1 3.5 Hz (25’200 A/h) Lift angle 30° / 38° 38° 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. OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D - 2628...

  • Page 2: Table Of Contents

    Differences between calibres Exploded views for Calibre 2628 7-11 Dial side Movement side Movement side Dial side Spare parts list for Calibre 2628 11-14 Spare parts list Spare parts list Spare parts list Spare parts list Specifi c information for Calibre 2628...

  • Page 3: General Information For Calibre 2628

    General information for Calibre 2628 Date correction The date Correction is not recommended between 10 p.m. and 2 a.m. Improvements on version B Version A Version B Quality of adjustment: Quality of adjustment: Good Improved Self-starting: Medium Self-starting: Good Complete balance bridge (Ref. 10.058°) Chronometer balance bridges are not available (see CS-Info.

  • Page 4: Technical Modifi Cations On Version «A» And «B» / Hand Fi Tting / Tools / Lubricants

    General information for Calibre 2628 Technical modifi cations on version «A» and «B» Intermediate escape wheel Old version Risk New version Improvements Notes 7222500C30039 7222500C30039 Black residues within Improvement of surface The new version must the engagement can and material.
  • Page 5 Cutout in upper pivot shank Co-Axial wheel ref. 7222500B30040 ref. 7222500C30040 Pinion Ø = 1.999 mm Pinion Ø = 2.119 mm Pallet fork Old shape New shape ref. 7222500B40010 ref. 7222500C40010 OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D -2628...
  • Page 6 Stop lever ref. 7222500C56070 ref. 722250056070 Shock-absorber, upper ref. 722112070530 ref. 7222500C70530 Shock-absorber, lower ref. 7222500C70531 ref. 722112070531 In settings, upper ref. 7222500C70640 ref. 722112070640 In settings, lower ref. 7222500C70641 ref. 722112070641 OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-006-E - D -2628...

  • Page 7: Dial Side

    Exploded views - Dial side for Calibre 2628 Parts listed in order of assembly 1 = 31120 6 = 51050 2 = 31121 7 = 51091 3 = 5101021 8 = 3503 (1x) 4 = 53022 9 = 31100 5 = 5108006...

  • Page 8: Movement Side

    Exploded views - Movement side for Calibre 2628 Parts listed in order of assembly 1 = 1004107 14 = 30039 2 = 32033 15 = 30025 3 = 31023 16 = 30027* 4 = 31024 17 = 1004807 5 = 31021...
  • Page 9 Exploded views - Movement side for Calibre 2628 Parts listed in order of assembly 1 = 56070 8 = 3504 (1x) 2 = 1203007 9 = 2201006 3 = 32032 10 = 3507 (3x) 4 = 32031 11 = 3503 (3x)

  • Page 10: Dial Side

    Exploded views - Dial side for Calibre 2628 Parts listed in order of assembly 1 = 31083* 11 = 1601006 2 = 31041 12 = 3502 (3x) 3 = 31100 13 = 91440 4 = 31101 14 = 53080 5 = 10062...

  • Page 11: Spare Parts List For Calibre 2628

    Spare parts list for Calibre 2628 Main plate, pre-assembled Version Reference Reverser maintaining plate Version Reference 2628A 72226281002007 2628A 722112012124 2628B 7222628B1002007 2628B Barrel bridge Version Reference Date indicator maintaining plate Version Reference 2628A 2628A 7222500B1004107 722112813105 2628B 2628B Wheel train bridge...

  • Page 12: Spare Parts List

    Spare parts list for Calibre 2628 Ball bearing Version Reference Hour wheel Version Reference 2628A 2628A 722112022040 722112831046* 2628B 2628B Oscillating weight bolt Version Reference Hour wheel, 24 hours Version Reference 2628A 2628A 722112022042 72211203104706* 2628B 2628B Intermediate wheel Version Reference...

  • Page 13: Spare Parts List

    Spare parts list for Calibre 2628 Date wheel Version Reference Stop lever Version Reference 2628A 2628A 722250056070 722112833032 2628B 2628B 7222500C56070 Pallet fork Version Reference Shock-absorber, upper Version Reference 2628A 7222500B40010 2628A 722112070530 2628B 7222500C40010 2628B 7222500C70530 Balance complete with stud...

  • Page 14: Spare Parts List For Calibre 2628

    Spare parts list for Calibre 2628 Screw for date jumper Version Reference maintaining plate 2628A 72211283501 2628B Screw for display Version Reference mechanism platform 2628A 72211283502 2628B Screw for setting lever jumper Version Reference 2628A 72211203503 2628B Screw for minute train bridge...

  • Page 15: Specifi C Information For Calibre 2628

    Specifi c information for Calibre 2628 1.0 Assembling of the escapement system Fig. 1.0 Key points The order of assembly must be respected (See page 11). After assembling, the escapement functions must be checked accurately with the corresponding tool. The pallet bridge positions the co-axial wheel and the pal- let fork.

  • Page 16: Runners For Hands Setting And Hand Setting Force / Height Of Hands

    Specifi c information for Calibre 2628 3.0 Runners for hand setting and hand setting force Nbr. of runners for Minimum force Maximum force Support Description Movement holder hand setting (jewel) GMT hand Hour hand 507 0017 Minute hand Second hand 3.2 Height of hands...
  • Page 17 Specifi c information for Calibre 2628 4.0 Components that must not be epilam-treated after cleaning Description Reference Balance assembled on the balance bridge * 40055 + 10058° Complete balance 40055 Pallet fork 40010 In-setting, upper * 70640 In-setting, lower *...

  • Page 18: Special Parameter Settings / Timing Key

    Specifi c information for Calibre 2628 Demagnetise the movement according to Working Instruction 34. Values to be checked Please consult Working Instructions 5 and 28 for instructions and tolerances. Special parameter settings Co-Axial Co-Axial Instrument type Comments 4 Hz calibres 3.5 Hz calibres...

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