---
product_id: 124827345
title: "Ochoos 638RS Bearing 8289 mm (4 Pcs) ABEC-1 Grade 638-2RS Miniature 638 RS Ball Bearings"
brand: "ochoos"
price: "FREE"
currency: NZD
in_stock: false
category: "BISS"
url: https://www.desertcart.nz/products/124827345-ochoos-638rs-bearing-8289-mm-4-pcs-abec-1-grade
store_origin: NZ
region: New Zealand
---

# Ochoos 638RS Bearing 8289 mm (4 Pcs) ABEC-1 Grade 638-2RS Miniature 638 RS Ball Bearings

**Brand:** ochoos
**Price:** FREE
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Ochoos 638RS Bearing 8289 mm (4 Pcs) ABEC-1 Grade 638-2RS Miniature 638 RS Ball Bearings by ochoos
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/124827345-ochoos-638rs-bearing-8289-mm-4-pcs-abec-1-grade)

## Best For

- ochoos enthusiasts

## Why This Product

- Trusted ochoos brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

What is a Ball Bearing?The Function of Ball BearingsFrom small and large motors to car axles to electric fans and hard disc drives (HDDs),&#xA0;ball bearings are used in a wide array of machines for rotary motion.&#xA0;Ball bearings&#xA0;support rotary parts and reduce friction to facilitate the smooth&#xA0;operation of machines.&#xA0;Ball Bearing ComponentsBall bearings are comprised of four major parts: a large ring (outer ring), a small&#xA0;ring&#xA0;(inner ring), balls between the rings (steel balls), and a cage to prevent the&#xA0;balls from&#xA0;hitting each other. The modern structure dates back to around 1500, when&#xA0;Leonardo da Vinci&#xA0;invented ball bearings to reduce friction against the axles of&#xA0;horsedrawn carts. For more&#xA0;than 500 years, the ball bearing has been defined by this&#xA0;simple structure.Miniature Ball Bearings&#xA0;are a type of rolling-element bearing that uses balls to&#xA0;maintainthe separation between the moving parts of the bearing. The purpose of a&#xA0;ball bearing is&#xA0;to reduce rotational friction and support radial and axial loads.&#xA0;Radial Ball bearings can&#xA0;support moderate radial loads and moderate axial loads&#xA0;(parallel to the shaft). They can&#xA0;operate at high speeds . Ball bearings with shields&#xA0;or seals for protection can be&#xA0;lubricated to last for the operating life.&#xA0;Sometimes ball bearings are also called &quot;deep groove ball bearings.&quot;TECHNICAL SPECSItem: 638RS Ball BearingType: Deep Groove Ball BearingMaterial: 52100 Chrome SteelClosures: 2 SealedGrade: ABEC-1Size: 8mm x 28mm x 9mmInner Diameter: 8mmOuter Diameter: 28mmWidth: 9mmDynamic load rating Cr: 4,160 NStatic load rating Cor: 1,780 NChamfer: 0.3 mmQuantity: 1 lot = 4 Pcs Bearings&#xA0;FACTORY STORYItem specifics:Torque capacity: 8*28*9mmSurface roughness: Ra 0.05Material: SteelModel number: 638 2RSStructure: Deep GrooveCoatings: Grease

## Images

![Ochoos 638RS Bearing 8289 mm (4 Pcs) ABEC-1 Grade 638-2RS Miniature 638 RS Ball Bearings - Image 1](https://m.media-amazon.com/images/I/418vwEDtwOL.jpg)
![Ochoos 638RS Bearing 8289 mm (4 Pcs) ABEC-1 Grade 638-2RS Miniature 638 RS Ball Bearings - Image 2](https://m.media-amazon.com/images/I/41hYYo72zEL.jpg)
![Ochoos 638RS Bearing 8289 mm (4 Pcs) ABEC-1 Grade 638-2RS Miniature 638 RS Ball Bearings - Image 3](https://m.media-amazon.com/images/I/4166TUnksHL.jpg)
![Ochoos 638RS Bearing 8289 mm (4 Pcs) ABEC-1 Grade 638-2RS Miniature 638 RS Ball Bearings - Image 4](https://m.media-amazon.com/images/I/41polxU3-zL.jpg)
![Ochoos 638RS Bearing 8289 mm (4 Pcs) ABEC-1 Grade 638-2RS Miniature 638 RS Ball Bearings - Image 5](https://m.media-amazon.com/images/I/41Bh3xJS0AL.jpg)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-28*