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The ETA 2824/2834/2836-1497 Ball Bearing is a genuine Swiss-made component for the ETA 2824, 2834, and 2836 automatic movement family. As an integral part of the automatic winding system, the 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 2824/2834/2836 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
Direct replacement – drop-in replacement for worn or damaged rotor bearings
Part Number: 2824/2834/2836-1497 / 1497
Article Number: 31-2
Compatible Movements: ETA 2824-2, 2834-2, 2836-2
Movement Diameter: 25.6 mm (11½”’)
Movement Height: 4.60 mm – 2824-2
Jewels: 25
Frequency: 28,800 vph (4 Hz)
Power Reserve: ~38 hours
Origin: Switzerland (ETA factory part)
Condition: Brand new
Service and overhaul of ETA 2824/2834/2836 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 2824/2834/2836-1497), made in Switzerland. The ETA 2824-2 is widely regarded as one of the most robust and reliable mechanical calibers in production.
2. Which movements is this ball bearing compatible with?
This ball bearing is compatible with ETA 2824-2, 2834-2, and 2836-2 movements. The 2824-2 is a 25.6 mm date-only movement introduced in 1982, while the 2834-2 and 2836-2 are its day-date variants.
3. What is the function of the ball bearing in the ETA 2824 movement?
The ball bearing supports the automatic rotor, allowing it to rotate with minimal friction. The ETA 2824 family features a ball-bearing rotor with bi-directional winding, efficiently winding the mainspring regardless of rotor direction.
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