The Miyota 9015 movement is an automatic mechanism of Japanese origin that has been widely used by many mid-range watch manufacturers. This movement was first introduced at the 2010 Baselworld event and has since gained a reputation for its high-quality and reliable performance.
The Miyota 9015 is an updated version of the 8215 movements, with many of the same functions, such as stopping the seconds by pulling the crown or manual winding.
This movement offers precision and accuracy, estimated to be between -10 and +30 seconds per day, but can be adjusted to offer even better accuracy.
In this article, we will take a closer look at the Miyota 9015 movement, its features, and what makes it a popular choice among watch enthusiasts.
Miyota 9015 Technical Sheet
Here is a technical sheet for the Miyota 9015 movement in a table format:
|Movement Type||Automatic mechanical|
|Frequency||28,800 beats per hour (4Hz)|
|Power reserve||42 hours|
|Accuracy||-10 to +30 seconds per day (adjustable to +-5s/d)|
|Size||Diameter: 11.5 lignes (25.6mm)|
|Functions||Hours, minutes, seconds, date display|
Note: Technical specifications may vary slightly depending on the manufacturer’s modifications or adjustments.
How does the Miyota 9015 work?
The Miyota 9015 is an automatic mechanical movement, which means it uses a combination of a rotor and a series of gears to power the watch. When the watch is worn on the wrist, the rotor rotates and winds the mainspring, which stores energy to power the watch.
The Miyota 9015 rotor movement is unidirectional, and it moves on a ball bearing, allowing for a smooth and reliable operation.
The energy stored in the mainspring is then transferred through a series of gears to power the watch’s hands and display the time.
The movement has a frequency of 28,800 beats per hour (4Hz), which means that the balance wheel inside the movement oscillates at a rate of 28,800 times per hour. This high frequency contributes to the movement’s accuracy.
The Miyota 9015 movement also features a stop system, manual winding, and a quick change calendar. The stop system allows the user to stop the second’s hand by pulling out the crown, which makes it easier to synchronize the watch with other timepieces.
The manual winding feature allows the user to manually wind the mainspring if the watch has not been worn for some time. Finally, the quick change calendar feature makes it easy to adjust the date display without having to adjust the time.
Overall, the Miyota 9015 movement is a reliable and accurate mechanism that offers several convenient features for watch enthusiasts.
A bit of history about the Miyota 9015 movement
The Miyota 9015 movement was first introduced by the Citizen Watch Company at the 2009 Baselworld event. The Citizen Watch Company is a Japanese watchmaking company that has been in operation since 1918.
The Miyota brand is a subsidiary of Citizen and is responsible for producing a range of watch movements, including the Miyota 9015.
The Miyota 9015 movement was designed as an updated version of the Miyota 8215 movement, with several improvements and additional features. One of the most notable improvements was the use of a ball bearing for the rotor, which improved the movement’s efficiency and durability.
The Miyota 9015 also featured a higher frequency, a longer power reserve, and a more accurate timekeeping performance than its predecessor.
The Miyota 9015 quickly gained popularity among watch manufacturers as a reliable and affordable alternative to more expensive Swiss-made movements. Many mid-range watch brands started using the Miyota 9015 in their watches, including Steinhart, Helson, and Phoibos.
Today, the Miyota 9015 movement is considered one of the best automatic movements in its price range, known for its accuracy, reliability, and versatility.
Read our article on Seiko NH35 Movement: A Complete Guide for watch enthusiasts
Price and availability
The Miyota 9015 is a type of watch movement that is not very expensive, and you can buy it for about $100 USD. It is often used in mid-range watches, which are not too expensive either. If your watch stops working, you can easily replace the movement with a new one without spending too much money. However, sometimes new models of movements are made, and the old ones stop being m
Read our guide on What are Mechanical Watches? History and operation
n conclusion, the Miyota 9015 Japanese Movement is a high-quality and reliable watch movement that has gained popularity among mid-range watch manufacturers for its precision, durability, and affordability.
With a rotor that runs on a ball bearing, a unidirectional movement of 24 rubies, and a power reserve that can exceed 42 hours, the Miyota 9015 offers accurate and consistent timekeeping performance.
While it may not have the same prestige as Swiss-made movements, the Miyota 9015 offers a cost-effective solution that delivers exceptional value for its price. Overall, the Miyota 9015 is an excellent option for those looking for a quality watch movement without breaking the bank.