EB 8804 – interchangeable spare parts

EB 8804 movement

Which spare parts fit the EB 8804 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

42Parts with interchange data

18Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of EB and the original spare-part labels. All information has been carefully checked but is provided without guarantee. Please verify the interchangeability yourself before fitting, especially the height, diameter and execution of the part.

🛒 Spare parts for EB 8804 in our shop

Bettlach EB 8800 PART 307 Regulator EB 8801 8802 8804 8806 ... 883710,90 € incl. VAT *View item ›

🔧 Interchangeable parts

Part no.	Description	Also fits
163/1ISO 80.400	Center pipe	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8827 EB 8837
181ISO 20.040	Barrel for drilled core	EB 8800 2e EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
197ISO 20.070.06	Core and ratchet wheel, riveted	EB 8800 2e EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
199ISO 20.062	Barrel axle	EB 8800 2e EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821
200/1ISO 30.014.06	Great wheel, assembled	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
203/5ISO 30.012.06	Intermediate wheel with setting wheel	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
203/5/200/1	Intermediate wheel and pinion	according to original label EB 8800 EB 8801 EB 8802 EB 8805 EB 8806 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
210ISO 30.025	Third wheel	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
220ISO 30.027	Fourth wheel	EB 8800 EB 8802 EB 8806 EB 8808 EB 8810 EB 8814 EB 8816 EB 8820 EB 8821
224ISO 30.027.13	Fourth wheel	EB 8806 EB 8814 EB 8816 Height 464 EB 8806 EB 8814 EB 8816
243/1ISO 31.081.18	Cannon pinion, undrilled, without clam notch, smooth hole	EB 8814 EB 8816 Height 215 EB 8814 EB 8816 Height 270 EB 8814 EB 8816 Height 310 EB 8814 EB 8816
260ISO 31.041	Minute wheel	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8827 EB 8837
301ISO 40.301	Regulator for flat hairspring	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
307ISO 40.301	Regulator with adjustable stud holder, for flat hairspring	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
311ISO 70.800	Upper cap jewel with end-piece	EB 8800 EB 8801 EB 8803 EB 8805 EB 8806 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816
330ISO 70.801	Lower cap jewel with end-piece	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816
334ISO 70.850	End-piece with cap jewels for two wheels	EB 8802 EB 8806 EB 8816
334/1ISO 70.860	Upper cap jewels with end-pieces, for three wheels	1st execution EB 8800 EB 8810 EB 8814 EB 8820 EB 8821 2nd execution EB 8801 EB 8803 EB 8805 EB 8811 EB 8813 EB 8815 EB 8827 EB 8837
401ISO 51.010	Winding stem	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837 according to original label EB 8800 EB 8801 EB 8802 EB 8805 EB 8806 EB 8810 EB 8811 EB 8812 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
407ISO 31.121	Clutch wheel	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
410ISO 31.120	Winding pinion	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
420ISO 31.023	Crown wheel	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
425ISO 51.120	Click	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
430ISO 61.080	Click spring	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
435/1ISO 51.050	Spring yoke	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
443/1ISO 51.080.06	Setting lever, assembled	EB 8800 EB 8801 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837 Height 376 EB 8800 EB 8801 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
450ISO 31.100	Setting wheel	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8837
466ISO 10.210	Lid for winding and setting mechanisms	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821
479ISO 61.090	Pressure spring for setting lever	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821
790ISO 30.041	Pin escape wheel, pivoted	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
790/2ISO 30.041.10	Pin escape wheel for upper end-piece	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
791ISO 40.102.45	Balance staff for finger	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
794ISO 40.055	Balance with finger, regulated	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837 EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
798ISO 40.125	Finger	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
800ISO 40.012	Pin pallet fork for finger	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
820/791ISO 40.102.25	Balance staff for finger and for shock-protecting device	EB 8800 EB 8801 EB 8802 EB 8803 EB 8805 EB 8806 EB 8808 EB 8810 EB 8811 EB 8813 EB 8814 EB 8815 EB 8816 EB 8820 EB 8821 EB 8827 EB 8837
2535ISO 13.105 (13.104	Date indicator guard	EB 8805 EB 8806 EB 8814 EB 8815 EB 8816
2557/1ISO 91.440	Date indicator, transferred	EB 8805 EB 8806 EB 8814 EB 8815 EB 8816
2558ISO 33.010	Double-toothing hour wheel	EB 8805 EB 8806 EB 8814 EB 8815 EB 8816 Height 125 EB 8805 EB 8806 EB 8814 EB 8815 EB 8816 Height 185 EB 8805 EB 8806 EB 8814 EB 8815 EB 8816 Height 225 EB 8805 EB 8806 EB 8814 EB 8815 EB 8816
2621ISO 33.029 (33.030		EB 8805 EB 8806 EB 8814 EB 8815 EB 8816
2628ISO 53.140		EB 8805 EB 8806 EB 8814 EB 8815 EB 8816 EB 8827 EB 8837
2646ISO 53.040		EB 8805 EB 8806 EB 8814 EB 8815 EB 8816

Source: original interchangeability lists of EB (checked transcription) and checked original spare-part labels · as of 2026-10-28. Height / execution: the part fits only in this height or execution.

🌀 Matching mainspring

Mainspring dimensions for EB 8804 (height × diameter × thickness × length) and matching mainspring in our shop:

EB 8800 à 8806: 1.35 × 11.0 × 0.135 × 340 mm (GR 3518)

🔗 Movements sharing the most parts

→ All calibers of EB

❓ Frequently asked questions

Which EB 8804 spare parts also fit other movements?

For the EB 8804, 42 part numbers are listed as interchangeable. Together they fit 18 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the EB 8804?

The most shared parts: EB 8814 (51 parts), EB 8816 (51 parts), EB 8806 (47 parts).

Which mainspring fits the EB 8804?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.35 × 11.0 × 0.135 × 340 mm (GR 3518, hand-wound, normal end hook).