---
description: Genuine Omega 8500 ratchet wheel 7228500A31020 for Caliber 8500A. Swiss original dual-barrel winding part for movement repair.
title: Omega 8500 Movement Ratchet Wheel | Omega Movement Parts - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/06/8500A31020.jpg
---
[Skip to content](#content)
- [Home](https://www.soflypart.com)
-
- [Products](https://www.soflypart.com/shop/)
-
- [Watch Parts](https://www.soflypart.com/product-category/watch-parts/)
-
- [Genuine Omega Parts](https://www.soflypart.com/product-category/watch-parts/genuine-omega-parts/)
-
- **Omega 8500 Movement Ratchet Wheel 7228500A31020**
[](https://www.soflypart.com/wp-content/uploads/2019/06/8500A31020.jpg)
[](https://www.soflypart.com/wp-content/uploads/2019/06/8500A31020B.jpg)
# Omega 8500 Movement Ratchet Wheel 7228500A31020
$80.00
You Saved
| Brand | Choose an option Omega- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $80.00 |
| 3 - 4 | 5% | $76.00 |
| 5+ | 7% | $74.40 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $80.00 |
| 3 - 4 | 5% | $76.00 |
| 5+ | 7% | $74.40 |
Omega 8500 Movement Ratchet Wheel 7228500A31020 quantity
Add to cart
x
[Checkout](https://www.soflypart.com/checkout/)
- Covers 99% of Repair Needs
- Wholesale Discounts
- Fast Global Shipping
- 24/7 Customer Support
## Product Description
The **Omega 8500 Movement Ratchet Wheel (7228500A31020)** is a genuine Swiss-made component for the **Omega Caliber 8500** Co-Axial automatic movement. This ratchet wheel is a critical part of the dual-barrel winding system, working together with a paired ratchet wheel and the transmission wheel to facilitate the transfer of winding torque between the two series-coupled barrels . It is listed as a service part for Caliber 8500A in the official Omega technical documentation .
## Features & Function
- **Genuine Omega part** – authentic Swiss-made component listed for Caliber 8500A
- **Dual-barrel system component** – works with a second ratchet wheel for series-coupled winding torque transfer
- **Critical for 60-hour power reserve** – forms part of the dual-barrel mechanism
- **Service replacement part** – recognized in official Omega technical documentation
## Specifications
- **Part Number**: 7228500A31020
- **Compatible Movement**: Omega Caliber 8500A
- **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)
- **Winding System**: Bi-directional automatic with dual barrels
- **Origin**: Switzerland (Omega factory part)
- **Condition**: Brand new
## Applications
- **Service and overhaul** of Omega Caliber 8500A movements
- **Winding system repair** – replacing worn or damaged ratchet wheels
- **Power reserve restoration** – ensuring proper torque transfer between the two barrels
- **Restoration** of De Ville Hour Vision, Seamaster Aqua Terra, Constellation, 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 7228500A31020), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list for Caliber 8500A .
**2. Which movement versions is this component compatible with?**
This ratchet wheel is specifically listed for **Omega Caliber 8500A** in the technical documentation . For other versions (8500B, 8500G, and 8900), different references may be required. Please verify your movement version before ordering.
**3. What is the function of the ratchet wheel in the Caliber 8500?**
The ratchet wheel works with a second ratchet wheel in the **dual-barrel system** to transfer winding torque between the two series-coupled barrels . This is essential for the movement’s 60-hour power reserve.
## 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**.
##### Our Popular Items
[](https://www.soflypart.com/product/generic-cartier-tank-wsta0042-4322-sapphire-crystal-18-9mm/)
### [Generic Cartier Tank WSTA0042/4322 Sapphire Crystal 18.9mm](https://www.soflypart.com/product/generic-cartier-tank-wsta0042-4322-sapphire-crystal-18-9mm/)
[](https://www.soflypart.com/product/generic-rolex-caliber-1220-1225-mainspring/)
### [Generic Rolex Caliber 1220/1225 Mainspring](https://www.soflypart.com/product/generic-rolex-caliber-1220-1225-mainspring/)
[](https://www.soflypart.com/product/generic-rolex-4030-mainspring/)
### [Generic Rolex 4030 Mainspring](https://www.soflypart.com/product/generic-rolex-4030-mainspring/)
[](https://www.soflypart.com/product/generic-rolex-2030-2035-mainspring/)
### [Generic Rolex 2030/2035 Mainspring](https://www.soflypart.com/product/generic-rolex-2030-2035-mainspring/)
[](https://www.soflypart.com/product/cartier-caliber-191-mainspring/)
### [Cartier Caliber 191 Mainspring](https://www.soflypart.com/product/cartier-caliber-191-mainspring/)
[](https://www.soflypart.com/product/eta-e03-001-4000-circuit-block-electronic-module/)
### [ETA E03.001-4000 Circuit Block Electronic Module](https://www.soflypart.com/product/eta-e03-001-4000-circuit-block-electronic-module/)
[](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/)
### [Generic Zenith El Primero Chronomaster 02.0310.400 Sapphire Crystal 29.85mm](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/)
[](https://www.soflypart.com/product/generic-breguet-classique-5920-5907-sapphire-crystal-30-5mm/)
### [Generic Breguet Classique 5920/5907 Sapphire Crystal 30.5mm](https://www.soflypart.com/product/generic-breguet-classique-5920-5907-sapphire-crystal-30-5mm/)
[](https://www.soflypart.com/product/hattori-vd55-vd57-circuit-block-electronic-module/)
### [Hattori VD55/VD57 Circuit Block Electronic Module](https://www.soflypart.com/product/hattori-vd55-vd57-circuit-block-electronic-module/)
[](https://www.soflypart.com/product/eta-caliber-2000-1471-stop-pinion/)
### [ETA Caliber 2000-1471 Stop Pinion](https://www.soflypart.com/product/eta-caliber-2000-1471-stop-pinion/)
- [](https://www.soflypart.com/product/generic-omega-seamaster-screw-crown-5-5mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-omega-seamaster-screw-crown-5-5mm/)Watch Parts [Generic Omega Seamaster Screw Crown 5.5mm
](https://www.soflypart.com/product/generic-omega-seamaster-screw-crown-5-5mm/) $25.00
You Saved
- [](https://www.soflypart.com/product/miyota-citizen-5r21-movement-third-wheel/)Quick View [Add to Cart](https://www.soflypart.com/product/miyota-citizen-5r21-movement-third-wheel/)Watch Movement Parts [MIYOTA/CITIZEN 5R21 Third Wheel
](https://www.soflypart.com/product/miyota-citizen-5r21-movement-third-wheel/) $1.00
You Saved
- [](https://www.soflypart.com/product/miyota-citizen-8200-movement-barrel-complete-gold-silver/)Quick View [Add to Cart](https://www.soflypart.com/product/miyota-citizen-8200-movement-barrel-complete-gold-silver/)Watch Movement Parts [MIYOTA/CITIZEN 8200 Barrel Complete Gold/Silver
](https://www.soflypart.com/product/miyota-citizen-8200-movement-barrel-complete-gold-silver/) $9.00
You Saved
- [](https://www.soflypart.com/product/generic-rolex-4130-205-sliding-pinion/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-rolex-4130-205-sliding-pinion/)Watch Parts [Generic Rolex 4130-205 Sliding Pinion
](https://www.soflypart.com/product/generic-rolex-4130-205-sliding-pinion/) $33.00
You Saved
- [](https://www.soflypart.com/product/generic-tissot-t099-427-silver-crown-and-tube-8-80mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-tissot-t099-427-silver-crown-and-tube-8-80mm/)Watch Parts [Generic Tissot T099.427 Silver Crown And Tube 8.80mm
](https://www.soflypart.com/product/generic-tissot-t099-427-silver-crown-and-tube-8-80mm/) $5.00
You Saved
- [](https://www.soflypart.com/product/generic-cartier-panthere-1310-sapphire-crystal-17-6mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-cartier-panthere-1310-sapphire-crystal-17-6mm/)Watch Parts [Generic Cartier Panthere 1310 Sapphire Crystal 17.6mm
](https://www.soflypart.com/product/generic-cartier-panthere-1310-sapphire-crystal-17-6mm/) $45.00
You Saved
- [](https://www.soflypart.com/product/generic-roger-dubuis-kingsquare-rddbks0042-sapphire-crystal-33-5mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-roger-dubuis-kingsquare-rddbks0042-sapphire-crystal-33-5mm/)Watch Parts [Generic Roger Dubuis KingSquare RDDBKS0042 Sapphire Crystal 33.5mm
](https://www.soflypart.com/product/generic-roger-dubuis-kingsquare-rddbks0042-sapphire-crystal-33-5mm/) $360.00
You Saved
- [](https://www.soflypart.com/product/cartier-caliber-1847-pallet-fork/)Quick View [Add to Cart](https://www.soflypart.com/product/cartier-caliber-1847-pallet-fork/)Watch Parts [Cartier Caliber 1847/1904-PS Pallet Fork
](https://www.soflypart.com/product/cartier-caliber-1847-pallet-fork/) $155.00
You Saved
- [](https://www.soflypart.com/product/generic-mido-m024-630-rose-gold-watch-crown-and-tube-7-0mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-mido-m024-630-rose-gold-watch-crown-and-tube-7-0mm/)Watch Parts [Generic Mido M024.630 Rose Gold Watch Crown And Tube 7.0mm
](https://www.soflypart.com/product/generic-mido-m024-630-rose-gold-watch-crown-and-tube-7-0mm/) $7.00
You Saved
- [](https://www.soflypart.com/product/generic-tag-heuer-carrera-calibre-17-cv2110-sapphire-crystal-34-6mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-tag-heuer-carrera-calibre-17-cv2110-sapphire-crystal-34-6mm/)Watch Parts [Generic TAG Heuer Carrera Calibre 17 CV2110 Sapphire Crystal 34.6mm
](https://www.soflypart.com/product/generic-tag-heuer-carrera-calibre-17-cv2110-sapphire-crystal-34-6mm/) $110.00
You Saved
```json
{"@context":"https://schema.org","@graph":[{"@type":["Store","Organization"],"@id":"https://www.soflypart.com/#organization","name":"Sofly","url":"https://www.soflypart.com","logo":{"@type":"ImageObject","@id":"https://www.soflypart.com/#logo","url":"https://www.soflypart.com/wp-content/uploads/2019/12/Sofly-logo.png","contentUrl":"https://www.soflypart.com/wp-content/uploads/2019/12/Sofly-logo.png","caption":"Soflypart","inLanguage":"en-US","width":"180","height":"62"},"openingHours":["Mo,Tu,We,Th,Fr,Sa,Su 09:00-17:00"],"image":{"@id":"https://www.soflypart.com/#logo"}},{"@type":"WebSite","@id":"https://www.soflypart.com/#website","url":"https://www.soflypart.com","name":"Soflypart","publisher":{"@id":"https://www.soflypart.com/#organization"},"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https://www.soflypart.com/wp-content/uploads/2019/06/8500A31020.jpg","url":"https://www.soflypart.com/wp-content/uploads/2019/06/8500A31020.jpg","width":"580","height":"580","caption":"Omega 8500 Movement Ratchet Wheel","inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/#breadcrumb","itemListElement":[{"@type":"ListItem","position":"1","item":{"@id":"https://www.soflypart.com","name":"Home"}},{"@type":"ListItem","position":"2","item":{"@id":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/","name":"Omega 8500 Movement Ratchet Wheel 7228500A31020"}}]},{"@type":"WebPage","@id":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/#webpage","url":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/","name":"Omega 8500 Movement Ratchet Wheel | Omega Movement Parts - Sofly","datePublished":"2019-06-27T10:47:08+08:00","dateModified":"2026-07-28T15:56:56+08:00","isPartOf":{"@id":"https://www.soflypart.com/#website"},"primaryImageOfPage":{"@id":"https://www.soflypart.com/wp-content/uploads/2019/06/8500A31020.jpg"},"inLanguage":"en-US","breadcrumb":{"@id":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/#breadcrumb"}},{"@type":"ProductGroup","name":"Omega 8500 Movement Ratchet Wheel | Omega Movement Parts - Sofly","description":"Genuine Omega 8500 ratchet wheel 7228500A31020 for Caliber 8500A. Swiss original dual-barrel winding part for movement repair.","sku":"210179","category":"Watch Parts","mainEntityOfPage":{"@id":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/#webpage"},"image":[{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2019/06/8500A31020.jpg","height":"580","width":"580"},{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2019/06/8500A31020B.jpg","height":"580","width":"580"}],"url":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/","productGroupID":"210179","hasVariant":[{"@type":"Product","sku":"210179","name":"Omega 8500 Movement Ratchet Wheel 7228500A31020 - Omega","description":"Product Description The\u00a0Omega 8500 Movement Ratchet Wheel (7228500A31020)\u00a0is a genuine Swiss-made component for the\u00a0Omega Caliber 8500\u00a0Co-Axial automatic movement. This ratchet wheel is a critical part of the dual-barrel winding system, working together with a paired ratchet wheel and the transmission wheel to facilitate the transfer of winding torque between the two series-coupled barrels\u00a0. It is listed as a service part for Caliber 8500A in the official Omega technical documentation\u00a0. Features & Function Genuine Omega part\u00a0\u2013 authentic Swiss-made component listed for Caliber 8500A\u00a0 Dual-barrel system component\u00a0\u2013 works with a second ratchet wheel for series-coupled winding torque transfer\u00a0 Critical for 60-hour power reserve\u00a0\u2013 forms part of the dual-barrel mechanism\u00a0 Service replacement part\u00a0\u2013 recognized in official Omega technical documentation\u00a0 Specifications Part Number: 7228500A31020 Compatible Movement: Omega Caliber 8500A\u00a0 Movement Diameter: 29.00 mm\u00a0 Movement Height: 5.5 mm\u00a0 Jewels: 39\u00a0 Frequency: 25,200 vph (3.5 Hz)\u00a0 Power Reserve: 60 hours (two series-coupled barrels)\u00a0 Winding System: Bi-directional automatic with dual barrels\u00a0 Origin: Switzerland (Omega factory part) Condition: Brand new Applications Service and overhaul\u00a0of Omega Caliber 8500A movements Winding system repair\u00a0\u2013 replacing worn or damaged ratchet wheels Power reserve restoration\u00a0\u2013 ensuring proper torque transfer between the two barrels Restoration\u00a0of De Ville Hour Vision, Seamaster Aqua Terra, Constellation, and other 8500-powered 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 7228500A31020), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list for Caliber 8500A\u00a0. 2. Which movement versions is this component compatible with? This ratchet wheel is specifically listed for\u00a0Omega Caliber 8500A\u00a0in the technical documentation\u00a0. For other versions (8500B, 8500G, and 8900), different references may be required. Please verify your movement version before ordering. 3. What is the function of the ratchet wheel in the Caliber 8500? The ratchet wheel works with a second ratchet wheel in the\u00a0dual-barrel system\u00a0to transfer winding torque between the two series-coupled barrels\u00a0. This is essential for the movement's 60-hour power reserve. 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/2019/06/8500A31020-150x150.jpg","offers":{"@type":"Offer","description":"Product Description The\u00a0Omega 8500 Movement Ratchet Wheel (7228500A31020)\u00a0is a genuine Swiss-made component for the\u00a0Omega Caliber 8500\u00a0Co-Axial automatic movement. This ratchet wheel is a critical part of the dual-barrel winding system, working together with a paired ratchet wheel and the transmission wheel to facilitate the transfer of winding torque between the two series-coupled barrels\u00a0. It is listed as a service part for Caliber 8500A in the official Omega technical documentation\u00a0. Features & Function Genuine Omega part\u00a0\u2013 authentic Swiss-made component listed for Caliber 8500A\u00a0 Dual-barrel system component\u00a0\u2013 works with a second ratchet wheel for series-coupled winding torque transfer\u00a0 Critical for 60-hour power reserve\u00a0\u2013 forms part of the dual-barrel mechanism\u00a0 Service replacement part\u00a0\u2013 recognized in official Omega technical documentation\u00a0 Specifications Part Number: 7228500A31020 Compatible Movement: Omega Caliber 8500A\u00a0 Movement Diameter: 29.00 mm\u00a0 Movement Height: 5.5 mm\u00a0 Jewels: 39\u00a0 Frequency: 25,200 vph (3.5 Hz)\u00a0 Power Reserve: 60 hours (two series-coupled barrels)\u00a0 Winding System: Bi-directional automatic with dual barrels\u00a0 Origin: Switzerland (Omega factory part) Condition: Brand new Applications Service and overhaul\u00a0of Omega Caliber 8500A movements Winding system repair\u00a0\u2013 replacing worn or damaged ratchet wheels Power reserve restoration\u00a0\u2013 ensuring proper torque transfer between the two barrels Restoration\u00a0of De Ville Hour Vision, Seamaster Aqua Terra, Constellation, and other 8500-powered 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 7228500A31020), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list for Caliber 8500A\u00a0. 2. Which movement versions is this component compatible with? This ratchet wheel is specifically listed for\u00a0Omega Caliber 8500A\u00a0in the technical documentation\u00a0. For other versions (8500B, 8500G, and 8900), different references may be required. Please verify your movement version before ordering. 3. What is the function of the ratchet wheel in the Caliber 8500? The ratchet wheel works with a second ratchet wheel in the\u00a0dual-barrel system\u00a0to transfer winding torque between the two series-coupled barrels\u00a0. This is essential for the movement's 60-hour power reserve. 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.","price":"80","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/?attribute_pa_brand=brand-omega"}}],"@id":"https://www.soflypart.com/product/omega-8500-movement-ratchet-wheel-7228500a31020/#richSnippet"}]}
```