---
description: Genuine ETA 2824/2834/2836-429 balance axle for ETA 2824 family. Swiss-made balance staff for automatic movement repair and restoration.
title: ETA 2824/2834/2836-429 Balance Axle - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/06/28balancea.jpg
---
[Skip to content](#content)
- [Home](https://www.soflypart.com)
-
- [Products](https://www.soflypart.com/shop/)
-
- [Watch Movement Parts](https://www.soflypart.com/product-category/watch-parts/movement-parts/)
-
- [Watch Parts](https://www.soflypart.com/product-category/watch-parts/)
-
- **ETA 2824/2834/2836-429 Balance Axle**
[](https://www.soflypart.com/wp-content/uploads/2019/06/28balancea.jpg)
[](https://www.soflypart.com/wp-content/uploads/2019/06/28balanceab.jpg)
# ETA 2824/2834/2836-429 Balance Axle
$16.00
You Saved
| Brand | Choose an option ETA- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $16.00 |
| 3 - 4 | 5% | $15.20 |
| 5 - 9 | 7% | $14.88 |
| 10 - 14 | 10% | $14.40 |
| 15+ | 15% | $13.60 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $16.00 |
| 3 - 4 | 5% | $15.20 |
| 5 - 9 | 7% | $14.88 |
| 10 - 14 | 10% | $14.40 |
| 15+ | 15% | $13.60 |
ETA 2824/2834/2836-429 Balance Axle 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 **ETA 2824/2834/2836-429 Balance Axle** is a genuine Swiss-made component for the ETA 2824, 2834, and 2836 automatic movement family. The balance axle (also known as the balance staff) is the central pivot for the balance wheel, serving as the axis around which the balance wheel oscillates and regulates the release of energy from the gear train. This brand new original part is essential for watchmakers restoring correct amplitude and rate accuracy when the original balance staff becomes broken, bent, or worn.
## Features & Function
- **Genuine ETA part** – authentic Swiss-made component for ETA 2824/2834/2836 calibers
- **Balance staff** – central pivot for the balance wheel, enabling oscillation
- **Critical for timekeeping** – directly affects amplitude and rate stability
- **Essential for servicing** – a commonly worn component in the 2824 family
- **Precision-engineered** – manufactured to ETA’s original specifications
## Specifications
- **Part Number**: 2824/2834/2836-429 / 429
- **Compatible Movements**: ETA 2824-2, 2834-2, 2836-2, 2801, 2804, 2816, 2821, 2826-2, 2828, 2930
- **Movement Diameter**: 25.6 mm (11½”’)
- **Movement Height**: 4.60 mm – 2824-2
- **Jewels**: 25
- **Frequency**: 28,800 vph (4 Hz)
- **Power Reserve**: \~38–40 hours
- **Shock Protection**: Etachocs (Standard/Elaborated grades) / Incabloc (Top/Chronometer grades)
- **Origin**: Switzerland (ETA factory part)
- **Condition**: Brand new
## Applications
- **Service and overhaul** of ETA 2824/2834/2836 family movements
- **Balance staff replacement** – replacing broken, bent, or worn pivots
- **Timekeeping restoration** – restoring correct amplitude and rate when balance staff is damaged
- Suitable for **professional watchmakers** and **experienced repair technicians**
## FAQs
**1. Is this a genuine ETA part?**
Yes, this is a **genuine ETA factory part** (reference 429), made in Switzerland. The ETA 2824-2 is a 25.6 mm automatic caliber introduced in 1982 and is widely regarded as one of the most robust and reliable mechanical movements in production .
**2. Which movements is this balance axle compatible with?**
This balance axle is compatible with **ETA 2824-2, 2834-2, 2836-2, 2801, 2804, 2816, 2821, 2826-2, 2828, and 2930** calibers. The 2824-2 has a 38-hour power reserve and beats at 28,800 vph .
**3. What is the function of the balance staff?**
The balance staff is the **central axle** of the balance wheel. It allows the balance to oscillate freely and precisely, which is fundamental to the movement’s timekeeping accuracy. A broken or bent staff will cause erratic rate or complete stoppage. Along with the hairspring, the balance wheel and staff form a harmonic oscillator that regulates the gear train’s pace .
## 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/omega-caliber-8500-barrel-bridge-7228500a1004118/)Quick View [Add to Cart](https://www.soflypart.com/product/omega-caliber-8500-barrel-bridge-7228500a1004118/)Watch Parts [Omega Caliber 8500 Barrel Bridge 7228500A1004118
](https://www.soflypart.com/product/omega-caliber-8500-barrel-bridge-7228500a1004118/) $180.00
You Saved
- [](https://www.soflypart.com/product/rolex-2235-205-sliding-pinion-clutch-wheel/)Quick View [Add to Cart](https://www.soflypart.com/product/rolex-2235-205-sliding-pinion-clutch-wheel/)Watch Parts [Rolex 2235-205 Sliding Pinion Clutch Wheel
](https://www.soflypart.com/product/rolex-2235-205-sliding-pinion-clutch-wheel/) $60.00
You Saved
- [](https://www.soflypart.com/product/generic-tag-heuer-silver-crown-screw-down-5-2mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-tag-heuer-silver-crown-screw-down-5-2mm/)Watch Parts [Generic TAG Heuer Silver Crown Screw Down 5.2mm
](https://www.soflypart.com/product/generic-tag-heuer-silver-crown-screw-down-5-2mm/) $25.00
You Saved
- [](https://www.soflypart.com/product/generic-rolex-sky-dweller-326939-326935-326933-326934-sapphire-crystal-with-gasket/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-rolex-sky-dweller-326939-326935-326933-326934-sapphire-crystal-with-gasket/)Watch Parts [Generic Rolex Sky-Dweller 326939 Sapphire Crystal
](https://www.soflypart.com/product/generic-rolex-sky-dweller-326939-326935-326933-326934-sapphire-crystal-with-gasket/) $45.00
You Saved
- [](https://www.soflypart.com/product/generic-omega-de-ville-prestige-4310-31-00-sapphire-crystal-28-5mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-omega-de-ville-prestige-4310-31-00-sapphire-crystal-28-5mm/)Watch Parts [Generic Omega De Ville Prestige 4310.31.00 Sapphire Crystal 28.5mm
](https://www.soflypart.com/product/generic-omega-de-ville-prestige-4310-31-00-sapphire-crystal-28-5mm/) $35.00
You Saved
- [](https://www.soflypart.com/product/rolex-original-3135-2235-568-axle/)Quick View [Add to Cart](https://www.soflypart.com/product/rolex-original-3135-2235-568-axle/)Watch Parts [Rolex Original Calibre 3135-568 Axle
](https://www.soflypart.com/product/rolex-original-3135-2235-568-axle/) $60.00
You Saved
- [](https://www.soflypart.com/product/generic-roger-dubuis-sapphire-crystal-31-55mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-roger-dubuis-sapphire-crystal-31-55mm/)Watch Parts [Generic Roger Dubuis Sapphire Crystal 31.55mm
](https://www.soflypart.com/product/generic-roger-dubuis-sapphire-crystal-31-55mm/) $110.00
You Saved
- [](https://www.soflypart.com/product/ronda-763-movement-circuit-block/)Quick View [Add to Cart](https://www.soflypart.com/product/ronda-763-movement-circuit-block/)Watch Circuit & Coil [Ronda 763 Circuit Block Electronic Module
](https://www.soflypart.com/product/ronda-763-movement-circuit-block/) $2.00
You Saved
- [](https://www.soflypart.com/product/generic-hublot-king-power-juventus-716-qx-sapphire-crystal-35-5mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-hublot-king-power-juventus-716-qx-sapphire-crystal-35-5mm/)Watch Parts [Generic Hublot King Power Juventus 716.QX Sapphire Crystal 35.5mm
](https://www.soflypart.com/product/generic-hublot-king-power-juventus-716-qx-sapphire-crystal-35-5mm/) $75.00
You Saved
- [](https://www.soflypart.com/product/generic-patek-philippe-nautilus-5712-moonphace-dial/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-patek-philippe-nautilus-5712-moonphace-dial/)Watch Parts [Generic Patek Philippe Nautilus 5712 MoonPhace Dial
](https://www.soflypart.com/product/generic-patek-philippe-nautilus-5712-moonphace-dial/) $280.00
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/2019/06/28balancea.jpg","url":"https://www.soflypart.com/wp-content/uploads/2019/06/28balancea.jpg","width":"580","height":"580","caption":"ETA 2824/2834/2836-429 Balance Axle","inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-balance-axel/#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/eta-2824-2-2834-2-2836-2-movement-balance-axel/","name":"ETA 2824/2834/2836-429 Balance Axle"}}]},{"@type":"WebPage","@id":"https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-balance-axel/#webpage","url":"https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-balance-axel/","name":"ETA 2824/2834/2836-429 Balance Axle - Sofly","datePublished":"2019-06-21T05:56:31+08:00","dateModified":"2026-09-11T13:38:08+08:00","isPartOf":{"@id":"https://www.soflypart.com/#website"},"primaryImageOfPage":{"@id":"https://www.soflypart.com/wp-content/uploads/2019/06/28balancea.jpg"},"inLanguage":"en-US","breadcrumb":{"@id":"https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-balance-axel/#breadcrumb"}},{"@type":"ProductGroup","name":"ETA 2824/2834/2836-429 Balance Axle - Sofly","description":"Genuine ETA 2824/2834/2836-429 balance axle for ETA 2824 family. Swiss-made balance staff for automatic movement repair and restoration.","sku":"210025","category":"Watch Parts > Watch Movement Parts","mainEntityOfPage":{"@id":"https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-balance-axel/#webpage"},"image":[{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2019/06/28balancea.jpg","height":"580","width":"580"},{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2019/06/28balanceab.jpg","height":"580","width":"580"}],"url":"https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-balance-axel/","productGroupID":"210025","hasVariant":[{"@type":"Product","sku":"210025","name":"ETA 2824/2834/2836-429 Balance Axle - ETA","description":"Product Description The\u00a0ETA 2824/2834/2836-429 Balance Axle\u00a0is a genuine Swiss-made component for the ETA 2824, 2834, and 2836 automatic movement family. The balance axle (also known as the balance staff) is the central pivot for the balance wheel, serving as the axis around which the balance wheel oscillates and regulates the release of energy from the gear train. This brand new original part is essential for watchmakers restoring correct amplitude and rate accuracy when the original balance staff becomes broken, bent, or worn. Features & Function Genuine ETA part\u00a0\u2013 authentic Swiss-made component for ETA 2824/2834/2836 calibers Balance staff\u00a0\u2013 central pivot for the balance wheel, enabling oscillation Critical for timekeeping\u00a0\u2013 directly affects amplitude and rate stability Essential for servicing\u00a0\u2013 a commonly worn component in the 2824 family Precision-engineered\u00a0\u2013 manufactured to ETA's original specifications Specifications Part Number: 2824/2834/2836-429 / 429 Compatible Movements: ETA 2824-2, 2834-2, 2836-2, 2801, 2804, 2816, 2821, 2826-2, 2828, 2930 Movement Diameter: 25.6 mm (11\u00bd''') Movement Height: 4.60 mm \u2013 2824-2 Jewels: 25 Frequency: 28,800 vph (4 Hz) Power Reserve: ~38\u201340 hours Shock Protection: Etachocs (Standard/Elaborated grades) / Incabloc (Top/Chronometer grades) Origin: Switzerland (ETA factory part) Condition: Brand new Applications Service and overhaul\u00a0of ETA 2824/2834/2836 family movements Balance staff replacement\u00a0\u2013 replacing broken, bent, or worn pivots Timekeeping restoration\u00a0\u2013 restoring correct amplitude and rate when balance staff is damaged Suitable for\u00a0professional watchmakers\u00a0and\u00a0experienced repair technicians FAQs 1. Is this a genuine ETA part? Yes, this is a\u00a0genuine ETA factory part\u00a0(reference 429), made in Switzerland. The ETA 2824-2 is a 25.6 mm automatic caliber introduced in 1982 and is widely regarded as one of the most robust and reliable mechanical movements in production\u00a0. 2. Which movements is this balance axle compatible with? This balance axle is compatible with\u00a0ETA 2824-2, 2834-2, 2836-2, 2801, 2804, 2816, 2821, 2826-2, 2828, and 2930\u00a0calibers. The 2824-2 has a 38-hour power reserve and beats at 28,800 vph\u00a0. 3. What is the function of the balance staff? The balance staff is the\u00a0central axle\u00a0of the balance wheel. It allows the balance to oscillate freely and precisely, which is fundamental to the movement's timekeeping accuracy. A broken or bent staff will cause erratic rate or complete stoppage. Along with the hairspring, the balance wheel and staff form a harmonic oscillator that regulates the gear train's pace\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/2019/06/28balancea-150x150.jpg","offers":{"@type":"Offer","description":"Product Description The\u00a0ETA 2824/2834/2836-429 Balance Axle\u00a0is a genuine Swiss-made component for the ETA 2824, 2834, and 2836 automatic movement family. The balance axle (also known as the balance staff) is the central pivot for the balance wheel, serving as the axis around which the balance wheel oscillates and regulates the release of energy from the gear train. This brand new original part is essential for watchmakers restoring correct amplitude and rate accuracy when the original balance staff becomes broken, bent, or worn. Features & Function Genuine ETA part\u00a0\u2013 authentic Swiss-made component for ETA 2824/2834/2836 calibers Balance staff\u00a0\u2013 central pivot for the balance wheel, enabling oscillation Critical for timekeeping\u00a0\u2013 directly affects amplitude and rate stability Essential for servicing\u00a0\u2013 a commonly worn component in the 2824 family Precision-engineered\u00a0\u2013 manufactured to ETA's original specifications Specifications Part Number: 2824/2834/2836-429 / 429 Compatible Movements: ETA 2824-2, 2834-2, 2836-2, 2801, 2804, 2816, 2821, 2826-2, 2828, 2930 Movement Diameter: 25.6 mm (11\u00bd''') Movement Height: 4.60 mm \u2013 2824-2 Jewels: 25 Frequency: 28,800 vph (4 Hz) Power Reserve: ~38\u201340 hours Shock Protection: Etachocs (Standard/Elaborated grades) / Incabloc (Top/Chronometer grades) Origin: Switzerland (ETA factory part) Condition: Brand new Applications Service and overhaul\u00a0of ETA 2824/2834/2836 family movements Balance staff replacement\u00a0\u2013 replacing broken, bent, or worn pivots Timekeeping restoration\u00a0\u2013 restoring correct amplitude and rate when balance staff is damaged Suitable for\u00a0professional watchmakers\u00a0and\u00a0experienced repair technicians FAQs 1. Is this a genuine ETA part? Yes, this is a\u00a0genuine ETA factory part\u00a0(reference 429), made in Switzerland. The ETA 2824-2 is a 25.6 mm automatic caliber introduced in 1982 and is widely regarded as one of the most robust and reliable mechanical movements in production\u00a0. 2. Which movements is this balance axle compatible with? This balance axle is compatible with\u00a0ETA 2824-2, 2834-2, 2836-2, 2801, 2804, 2816, 2821, 2826-2, 2828, and 2930\u00a0calibers. The 2824-2 has a 38-hour power reserve and beats at 28,800 vph\u00a0. 3. What is the function of the balance staff? The balance staff is the\u00a0central axle\u00a0of the balance wheel. It allows the balance to oscillate freely and precisely, which is fundamental to the movement's timekeeping accuracy. A broken or bent staff will cause erratic rate or complete stoppage. Along with the hairspring, the balance wheel and staff form a harmonic oscillator that regulates the gear train's pace\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.","price":"16","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-balance-axel/?attribute_pa_brand=eta"}}],"@id":"https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-balance-axel/#richSnippet"}]}
```