Unitas 187 – interchangeable spare parts

Unitas (UT) 187 movement

Which spare parts fit the Unitas 187 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

31Parts with interchange data

27Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of Unitas (UT) 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.

🔧 Interchangeable parts

Part no.	Description	Also fits
182ISO 20.030	Barrel and cover	Unitas 180
195ISO 20.060	Barrel arbor	Unitas 180
201ISO 30.015	Center wheel	Unitas 180
210ISO 30.025	Third wheel	Unitas 180 Unitas 199
224ISO 30.027.13	Fourth wheel	Unitas 180 Unitas 199
240ISO 31.080	Cannon-pinion	Unitas 180 Unitas 199 Height 225 Unitas 180 Unitas 199 Height 255 Unitas 180 Unitas 199 Height 285 Unitas 180 Unitas 199 Height 315 Unitas 180 Unitas 199 Height 345 Unitas 180 Unitas 199 Height 365 Unitas 180 Unitas 199
250ISO 31.046	Hour wheel	Unitas 180 Unitas 199 Height 120 Unitas 180 Unitas 199 Height 150 Unitas 180 Unitas 199 Height 180 Unitas 180 Unitas 199 Height 210 Unitas 180 Unitas 199 Height 240 Unitas 180 Unitas 199 Height 260 Unitas 180 Unitas 199
260ISO 31.041	Minute wheel	Unitas 180 Unitas 199 Unitas 560 Unitas 570
301ISO 40.301	Regulator for flat hairspring	Unitas 199 Unitas 560 Unitas 570
311ISO 70.800	Upper cap jewel with end-piece	Unitas 180 Unitas 199 Unitas 510 Unitas 520 Unitas 521 Unitas 560 Unitas 570
330ISO 70.801	Lower cap jewel with end-piece	1st execution Unitas 180 Unitas 199 Unitas 285 Unitas 286 Unitas 343 Unitas 497 Unitas 6500
336ISO 70.806	Upper cap-jewel with end-piece, for escape wheel	1st execution Unitas 176 Unitas 199 2nd execution Unitas 180 Unitas 190 Unitas 200 Unitas 200N Unitas 201 Unitas 201N Unitas 510 Unitas 520 Unitas 521 Unitas 630 Unitas 6360 Unitas 6365 Unitas 6470 Unitas 6475 Unitas 6476 Unitas 6480 Unitas 6485 Unitas 6486
346ISO 70.807	Lower cap jewel with end-piece, f. esc. wheel	1st execution Unitas 199
401ISO 51.010	Winding stem	Unitas 199 Unitas 560 Unitas 570
407ISO 31.121	Clutch wheel	Unitas 180 Unitas 199 Unitas 560 Unitas 570
410ISO 31.120	Winding pinion	Unitas 180 Unitas 199 Unitas 560 Unitas 570
415ISO 31.020	Ratchet wheel	Unitas 180
420ISO 31.023	Crown wheel	Unitas 180 Unitas 199
422ISO 81.067	Crown wheel ring	Unitas 180 Unitas 199
425ISO 51.120	Click	Unitas 180 Unitas 199 Unitas 560 Unitas 570
430ISO 61.080	Click spring	Unitas 180 Unitas 199 Unitas 560 Unitas 570
435ISO 51.050	Yoke	Unitas 180
440ISO 61.100	Yoke spring	Unitas 180 Unitas 199 Unitas 560 Unitas 570
443ISO 51.080	Setting lever	Unitas 180 Unitas 199 Unitas 560 Unitas 570
443/5443ISO 51.080.06/.01	Setting lever	Unitas 180 Unitas 199 Unitas 560 Unitas 570
445ISO 51.090	Setting lever spring	Unitas 180 Unitas 199 Unitas 560 Unitas 570
450ISO 31.100	Setting wheel	Unitas 180 Unitas 199 Unitas 560 Unitas 570
702ISO 30.040.12	Escape wheel and pinion, pivoted, for two end-pieces	Unitas 199
704ISO 30.040.10	Escape wheel and pinion, for upper end-piece	Unitas 180 Unitas 199
705ISO 30.040	Escape wheel and pinion	Unitas 180 Unitas 199
710ISO 40.010	Jewelled pallet fork and stat	Unitas 180 Unitas 199 Unitas 560 Unitas 570

Source: original interchangeability lists of Unitas (UT) (checked transcription) and checked original spare-part labels · as of 2026-10-17. Height / execution: the part fits only in this height or execution.