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The ETA 2892-1497 Ball Bearing is a genuine Swiss-made component for the ETA 2892 automatic movement family. As an integral part of the automatic winding system, this ball bearing supports the rotor, enabling smooth, low-friction rotation and efficient bi-directional self-winding. This brand new original part is essential for watchmakers restoring proper automatic winding function when the original rotor bearing becomes worn, noisy, or damaged.
Genuine ETA part – authentic Swiss-made component for ETA 2892 and 2890 family calibers
Rotor support system – ball bearing design ensures smooth, low-friction rotor rotation
Bi-directional winding – enables efficient automatic winding regardless of rotor direction
Critical for winding efficiency – worn bearings are a common cause of automatic winding issues in the 2892 movement; a healthy bearing should allow the rotor to swing freely for at least 30 seconds in a damping test
Direct replacement – drop-in replacement for worn or damaged rotor bearings
Part Number: 2892-1497 / 1497
Article Number: 28-2
Compatible Movements: ETA 2890-2, 2892, 2892-2, 2892A2
Movement Diameter: 25.6 mm (11½”’)
Movement Height: 3.60 mm
Jewels: 21
Frequency: 28,800 vph (4 Hz)
Power Reserve: ~42 hours
Shock System: Incabloc
Origin: Switzerland (ETA factory part)
Condition: Brand new
Service and overhaul of ETA 2892 family movements
Automatic winding repair – replacing worn, noisy, or seized rotor bearings
Rotor restoration – ensuring smooth and efficient self-winding performance
Suitable for professional watchmakers and experienced repair technicians
1. Is this a genuine ETA part?
Yes, this is a genuine ETA factory part (reference 2892-1497), made in Switzerland. The ETA 2892-A2 is recognized as ETA’s premium automatic movement, widely used in mid-range and high-end Swiss watches.
2. Which movements is this ball bearing compatible with?
This ball bearing is compatible with ETA 2890-2, 2892, 2892-2, and 2892A2 calibers. The 2892-A2 is a 25.6 mm movement with a slim 3.6 mm height, extensively used by brands such as IWC, Omega, and Cartier.
3. How can I tell if the rotor bearing needs replacement?
A common diagnostic test is the rotor damping test – mount the rotor on pegwood, turn it 90 degrees, and let it swing freely. A healthy ETA 2892 rotor should swing for at least 30 seconds. If it stops much sooner, the bearing is likely worn and needs replacement. Experienced watchmakers note that the 2892 is particularly sensitive to rotor bearing condition.
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