ETA Caliber 2892-260 Minute Wheel

Quantity	Discount (%)	Price
1 - 2	—	$5.00
3 - 4	5 %	$4.75
5 - 9	7 %	$4.65
10 - 14	10 %	$4.50
15+	15 %	$4.25

Quantity

Discount (%)

Price

1 - 2

—

$5.00

3 - 4

5 %

$4.75

5 - 9

7 %

$4.65

10 - 14

10 %

$4.50

15+

15 %

$4.25

Product Description

This is a genuine Swiss-made ETA 2892-260 minute wheel (also called the motion wheel or minute wheel), a critical power transmission gear within the keyless works / setting mechanism of the ETA 2892 and 2892-A2 automatic movements. The 2892‑A2 was introduced in 1975 and became one of the industry‘s most refined ultra‑thin base calibers, serving as the foundation for countless watches from Cartier, IWC, Longines, Breitling, Omega, and other high‑end brands.

In the keyless works, the minute (motion) wheel sits between the setting wheel (ETA 2892‑450) and the hour wheel, directly transferring torque from the setting wheel to the motion‑work when the crown is pulled to the hand‑setting position. It also drives supplementary modules such as the GMT second‑time‑zone hand and the calendar assembly. The engagement and wear condition of this wheel directly determine the smoothness and precision of manual time adjustment.

When the teeth of the minute wheel become worn and compromise torque transmission, or when its bearing surfaces wear out and the wheel wobbles and loses proper engagement, replacing it with this genuine OEM part is the definitive method to restore precise gear‑train action during hand‑setting.

Features & Function

Quantity	Discount (%)	Price
1 - 2	—	$5.00
3 - 4	5 %	$4.75
5 - 9	7 %	$4.65
10 - 14	10 %	$4.50
15+	15 %	$4.25

Genuine Quality: Factory‑produced by ETA Switzerland, brand new, fully compliant with original material and precision standards.

Compatible Movements: ETA 2892 and 2892‑A2 automatic mechanical calibers (21 jewels, 28,800 vph, approx. 42–50h power reserve).

Part Number: ETA 2892.260 / ETA2892‑0260 / ETA 2892‑260 Minute Wheel.

Function in the Gear Train: The minute (motion) wheel serves as a bridge between the keyless works and the motion‑work. In the hand‑setting system, it is positioned between the setting wheel (ETA 2892‑450) and the hour wheel, transmitting torque from the setting wheel to the motion‑work to adjust the minute and hour hands. When the movement is running normally, the motion wheel transfers torque from the going train to safely move the hands.

Modular Compatibility: The ETA 2892 is a tractor movement for many complications. In GMT variants (e.g., caliber 2893‑2), the minute wheel also participates in driving the second‑time‑zone GMT hand. Wear on the minute wheel can lead to positional errors of the GMT hand.

Repair Value: When the minute wheel exhibits worn, chipped teeth, or excessive radial play in its pivots, the result is uneven hand‑setting, a spongy or jumpy feel, and sometimes audible whirring noises. Replacement with this genuine OEM part is the proper solution.

FAQ

Q1: Can I keep using a minute wheel whose teeth show shiny wear flats but no breakage?
A: Replacement is strongly recommended. Polished flats indicate that the metal has been strain‑hardened beyond its elastic limit and the surface of the tooth has begun to micro‑anneal. Continued use will lead to stepped wear patterns or eccentric meshing, resulting in slipping and rough hand‑setting. Given the risk of propagating micro‑cracks, it is best to replace it.

Q2: My watch keeps good time, but the crown feels very stiff when I set the hands. Could the minute wheel be the cause?
A: Possibly. The stiff feel could also be due to overtightened keyless works cover screws, which press down on the minute wheel‘s shoulders. If, after confirming that screw torque is correct, the stiffness remains, the minute wheel teeth (or the teeth of its mating wheel) may be worn or corroded. The wheel should be removed and inspected under magnification.

Q3: When disassembling the keyless works, I lost the axial shim that sits under the minute wheel. What should I do?
A: The minute wheel normally does not rely on a separate shim; its vertical position is defined by the jewels in the mainplate and the keyless works cover. If the cover is worn, the only correct solution is to replace the cover or, in extreme cases, the entire keyless works assembly.

Q4: Will a damaged minute wheel affect the date quick‑set function?
A: Not directly, because the date quick‑set works through a separate gear train. However, if the minute wheel wobbles severely due to wear, it can rub against the date cover plate or shift the position of the hour wheel. This indirect pressure can cause the date mechanism to jam or delay the date change. Whenever the minute wheel is serviced, the date drive train should be checked as well.