---
description: Genuine Omega 8500 intermediate train wheel 7228500A30025 for Caliber 8500/8501. Swiss original wheel train part for movement repair.
title: Omega 8500 Movement Intermediate Train Wheel 7228500A30025 - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/06/8500A30025.jpg
---
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- **Omega 8500 Movement Intermediate Train Wheel 7228500A30025**
[](https://www.soflypart.com/wp-content/uploads/2019/06/8500A30025.jpg)
[](https://www.soflypart.com/wp-content/uploads/2019/06/8500A30025B.jpg)
# Omega 8500 Movement Intermediate Train Wheel 7228500A30025
$75.00
You Saved
| Brand | Choose an option Omega- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $75.00 |
| 3 - 4 | 5% | $71.25 |
| 5+ | 7% | $69.75 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $75.00 |
| 3 - 4 | 5% | $71.25 |
| 5+ | 7% | $69.75 |
Omega 8500 Movement Intermediate Train Wheel 7228500A30025 quantity
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## Product Description
The **Omega 8500 Movement Intermediate Train Wheel (7228500A30025)** is a genuine Swiss-made component for the **Omega Caliber 8500** Co‑Axial automatic movement . As an essential part of the wheel train, this intermediate wheel transmits energy from the barrel system to the escapement, contributing to the movement’s stable timekeeping and 60‑hour power reserve . It is a recognized service part listed in the official Omega 8500 spare parts list, fitted during the wheel train assembly stage .
## Features & Function
- **Genuine Omega part** – authentic Swiss-made component listed for Caliber 8500 and 8501 series
- **Wheel train component** – transmits power from the barrels to the escapement system
- **Critical for timekeeping** – ensures stable energy transfer and consistent rate
- **Service replacement part** – recognized in official Omega technical documentation
- **Precision-engineered** – manufactured to Omega’s factory specifications
## Specifications
- **Part Number**: 7228500A30025
- **Compatible Movements**: Omega Caliber 8500A, 8500B, 8501A, 8501B
- **Movement Diameter**: 29.00 mm
- **Movement Height**: 5.5 mm
- **Jewels**: 39
- **Frequency**: 25,200 vph (3.5 Hz)
- **Power Reserve**: 60 hours (two series-coupled barrels)
- **Escapement Type**: Co‑Axial
- **Origin**: Switzerland (Omega factory part)
- **Condition**: Brand new
## Applications
- **Service and overhaul** of Omega Caliber 8500/8501 series movements
- **Wheel train repair** – replacing worn or damaged intermediate train wheels
- **Timekeeping restoration** – ensuring consistent amplitude and rate
- **Restoration** of De Ville Hour Vision, Seamaster Aqua Terra, and other 8500‑powered models
- Suitable for **professional watchmakers** and **authorized service centers**
## FAQs
**1. Is this a genuine Omega part?**
Yes, this is a **genuine Omega factory part** (reference 7228500A30025), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list as “Intermediate train wheel” .
**2. Which movement versions is this component compatible with?**
This intermediate train wheel is listed for **Omega Caliber 8500A, 8500B, 8501A, and 8501B** versions in the official technical documentation . For the METAS-certified Master Chronometer versions (8900/8901), a different reference may be required . Please verify your movement version before ordering.
**3. What is the function of the intermediate train wheel?**
The intermediate train wheel is part of the **wheel train** that transmits power from the two series‑coupled barrels to the escapement . It works with the seconds wheel and intermediate escapement wheel to deliver stable torque to the Co‑Axial escapement system .
## Why Choose SOFLY Watch Parts?
- Fast worldwide shipping within 3 business days.
- Competitive pricing on Seiko/Hattori calibers.
- 3,000+ watch movements and parts in stock.
- Trusted by watchmakers worldwide.
- Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**.
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As an essential part of the wheel train, this intermediate wheel transmits energy from the barrel system to the escapement, contributing to the movement's stable timekeeping and 60\u2011hour power reserve\u00a0. It is a recognized service part listed in the official Omega 8500 spare parts list, fitted during the wheel train assembly stage\u00a0. Features & Function Genuine Omega part\u00a0\u2013 authentic Swiss-made component listed for Caliber 8500 and 8501 series\u00a0 Wheel train component\u00a0\u2013 transmits power from the barrels to the escapement system\u00a0 Critical for timekeeping\u00a0\u2013 ensures stable energy transfer and consistent rate Service replacement part\u00a0\u2013 recognized in official Omega technical documentation\u00a0 Precision-engineered\u00a0\u2013 manufactured to Omega's factory specifications Specifications Part Number: 7228500A30025 Compatible Movements: Omega Caliber 8500A, 8500B, 8501A, 8501B\u00a0 Movement Diameter: 29.00 mm Movement Height: 5.5 mm Jewels: 39\u00a0 Frequency: 25,200 vph (3.5 Hz)\u00a0 Power Reserve: 60 hours (two series-coupled barrels)\u00a0 Escapement Type: Co\u2011Axial Origin: Switzerland (Omega factory part) Condition: Brand new Applications Service and overhaul\u00a0of Omega Caliber 8500/8501 series movements Wheel train repair\u00a0\u2013 replacing worn or damaged intermediate train wheels Timekeeping restoration\u00a0\u2013 ensuring consistent amplitude and rate Restoration\u00a0of De Ville Hour Vision, Seamaster Aqua Terra, and other 8500\u2011powered models\u00a0 Suitable for\u00a0professional watchmakers\u00a0and\u00a0authorized service centers FAQs 1. Is this a genuine Omega part? Yes, this is a\u00a0genuine Omega factory part\u00a0(reference 7228500A30025), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list as \"Intermediate train wheel\"\u00a0. 2. Which movement versions is this component compatible with? This intermediate train wheel is listed for\u00a0Omega Caliber 8500A, 8500B, 8501A, and 8501B\u00a0versions in the official technical documentation\u00a0. For the METAS-certified Master Chronometer versions (8900/8901), a different reference may be required\u00a0. Please verify your movement version before ordering. 3. What is the function of the intermediate train wheel? The intermediate train wheel is part of the\u00a0wheel train\u00a0that transmits power from the two series\u2011coupled barrels to the escapement\u00a0. It works with the seconds wheel and intermediate escapement wheel to deliver stable torque to the Co\u2011Axial escapement system\u00a0. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2019/06/8500A30025-150x150.jpg","offers":{"@type":"Offer","description":"Product Description The\u00a0Omega 8500 Movement Intermediate Train Wheel (7228500A30025)\u00a0is a genuine Swiss-made component for the\u00a0Omega Caliber 8500\u00a0Co\u2011Axial automatic movement\u00a0. As an essential part of the wheel train, this intermediate wheel transmits energy from the barrel system to the escapement, contributing to the movement's stable timekeeping and 60\u2011hour power reserve\u00a0. It is a recognized service part listed in the official Omega 8500 spare parts list, fitted during the wheel train assembly stage\u00a0. Features & Function Genuine Omega part\u00a0\u2013 authentic Swiss-made component listed for Caliber 8500 and 8501 series\u00a0 Wheel train component\u00a0\u2013 transmits power from the barrels to the escapement system\u00a0 Critical for timekeeping\u00a0\u2013 ensures stable energy transfer and consistent rate Service replacement part\u00a0\u2013 recognized in official Omega technical documentation\u00a0 Precision-engineered\u00a0\u2013 manufactured to Omega's factory specifications Specifications Part Number: 7228500A30025 Compatible Movements: Omega Caliber 8500A, 8500B, 8501A, 8501B\u00a0 Movement Diameter: 29.00 mm Movement Height: 5.5 mm Jewels: 39\u00a0 Frequency: 25,200 vph (3.5 Hz)\u00a0 Power Reserve: 60 hours (two series-coupled barrels)\u00a0 Escapement Type: Co\u2011Axial Origin: Switzerland (Omega factory part) Condition: Brand new Applications Service and overhaul\u00a0of Omega Caliber 8500/8501 series movements Wheel train repair\u00a0\u2013 replacing worn or damaged intermediate train wheels Timekeeping restoration\u00a0\u2013 ensuring consistent amplitude and rate Restoration\u00a0of De Ville Hour Vision, Seamaster Aqua Terra, and other 8500\u2011powered models\u00a0 Suitable for\u00a0professional watchmakers\u00a0and\u00a0authorized service centers FAQs 1. Is this a genuine Omega part? Yes, this is a\u00a0genuine Omega factory part\u00a0(reference 7228500A30025), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list as \"Intermediate train wheel\"\u00a0. 2. Which movement versions is this component compatible with? This intermediate train wheel is listed for\u00a0Omega Caliber 8500A, 8500B, 8501A, and 8501B\u00a0versions in the official technical documentation\u00a0. For the METAS-certified Master Chronometer versions (8900/8901), a different reference may be required\u00a0. Please verify your movement version before ordering. 3. What is the function of the intermediate train wheel? The intermediate train wheel is part of the\u00a0wheel train\u00a0that transmits power from the two series\u2011coupled barrels to the escapement\u00a0. It works with the seconds wheel and intermediate escapement wheel to deliver stable torque to the Co\u2011Axial escapement system\u00a0. Why Choose SOFLY Watch Parts? 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