MIYOTA/CITIZEN 90S5/9015 Second Wheel 5.28mm

Quantity	Discount (%)	Price
1 - 2	—	$2.50
3 - 4	5 %	$2.38
5 - 9	7 %	$2.33
10 - 14	10 %	$2.25
15+	15 %	$2.13

Quantity

Discount (%)

Price

1 - 2

—

$2.50

3 - 4

5 %

$2.38

5 - 9

7 %

$2.33

10 - 14

10 %

$2.25

15+

15 %

$2.13

Product Description

Quantity	Discount (%)	Price
1 - 2	—	$2.50
3 - 4	5 %	$2.38
5 - 9	7 %	$2.33
10 - 14	10 %	$2.25
15+	15 %	$2.13

This is a genuine MIYOTA second wheel (5.28mm) for the 90S5/9015 movement, made in Japan, designed for 90S5/9015 premium automatic calibers. It serves as the key gear directly driving the sweep seconds hand, positioned at the end of the power flow to ensure smooth, flutter-free hand motion. This product is brand new and original, not a generic replacement part.

Specifications

Brand：MIYOTA (by CITIZEN)

Compatible Movement：90S5 / 9015 automatic calibers

Part Name：Second Wheel (5.28mm) (Sweep Seconds Drive)

Dimension：5.28mm (second wheel arbor height)

Origin：Made in Japan

Quality：Genuine original, brand new

Function：Drives the central sweep seconds hand smoothly

Movement Series：9000-series premium ultra-thin

Movement Height：3.90mm

Movement Size：11½ ligne (25.94mm)

Beat Rate：28,800 bph (4Hz)

Jewels：24

FAQ

1. Is this 5.28mm second wheel an original CITIZEN/MIYOTA genuine part?
Yes. It is an original MIYOTA factory part, made in Japan. The 90S5 and 9015 are MIYOTA’s 9000-series premium ultra-thin mechanical movements, first introduced at BaselWorld 2010.

2. Which movements is this second wheel compatible with?
It fits MIYOTA 90S5 and 9015 automatic calibers. The 9015 is a date movement, while the 90S5 is the open-heart version. Both measure just 3.90mm thick and 11½ ligne. Verify your movement main plate is marked 90S5 or 9015.

3. What happens if the second wheel is damaged?
This second wheel is the key gear directly driving the central sweep seconds in the 9000-series. The 90 series features a redesigned gear train with the seconds hand in the direct power flow, eliminating the “flutter” seen in earlier movements. Damage can cause the seconds hand to stop, wobble, or jam. Timely replacement is critical.

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