---
product_id: 631475863
title: "ELECOM Trackball Replacement Ruby Ball Bearing Unit,Compatible IST Trackball M-IT10 and M-IT11, Gray (M-RS10)"
brand: "elecom"
price: "Bs.21"
currency: BOB
in_stock: false
reviews_count: 5
url: https://www.desertcart.bo/products/631475863-elecom-trackball-replacement-ruby-ball-bearing-unit-compatible-ist-trackball
store_origin: BO
region: Bolivia
---

# ELECOM Trackball Replacement Ruby Ball Bearing Unit,Compatible IST Trackball M-IT10 and M-IT11, Gray (M-RS10)

**Brand:** elecom
**Price:** Bs.21
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** ELECOM Trackball Replacement Ruby Ball Bearing Unit,Compatible IST Trackball M-IT10 and M-IT11, Gray (M-RS10) by elecom
- **How much does it cost?** Bs.21 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/631475863-elecom-trackball-replacement-ruby-ball-bearing-unit-compatible-ist-trackball)

## Best For

- elecom enthusiasts

## Why This Product

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

## Description

■This is a replacement artificial ruby unit for Elecom trackballs compatible with replacement of the support unit. ■The compatible products are M-IT10 series and M-IT11 series of the trackball mouse IST series. (As of November 2023)■Color: Gray ■Dimensions: 8mm (width) x 7mm (depth) x 4mm (height) ■Weight: approx. 1g ■Contents: Artificial ruby unit x 3 pcs, removal tool x 1 pc

Review: なんとも複雑な感想になってしまいますが、ISTの最大の特徴であるベアリングモデルを購入したのですが、シャーッと回転する音が気になったのとカーソルの挙動が落ち着かない印象で、どうにもしっくりこない… とはいえせっかく買ったものですし、こちらの人工ルビーユニットに交換してみたのですが、おお、使い慣れたいつものトラックボールだ！ これが好評なのか悪評なのか自分でも判断が難しいのですが、今現在はとても気に入って愛用しています。 たまに気分転換にまたベアリングに戻してみるのもいいかも。
Review: After about 10 minutes of fiddling I got the installation figured out and it went together in about two minutes. The action is some what smoother but a tad slower. For anyone familiar with folding knives it is like the difference between a PB bushing and ceramic bearing action. Both are good but the roller bearings feel a little bit crisper. I'm leaving them in for now and will update if necessary. One day after installing them I took them out and put the bearings back in. Much prefer the looser feel of the originals.

## Features

- REPLACEMENT BEARINGS - Replacement ruby ball bearing exclusively for trackball IST series.
- PLEASE NOTE- The compatible products are M-IT10 series and M-IT11 series of the trackball mouse IST series. (As of November 2023)
- EASY SWITCHOVER - Easy to replace and refit with the included removal tool.
- CONTENTS - Artificial ruby unit x 3 pieces, removal tool x 1 pieces
- Dimesion - Width 0.3 inch x Length 0.27 inch x Height 0.15 inch, Weight : 0.03oz

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CNB8ZY2S |
| Additional Features | Ruby Ball Beairng |
| Antenna Location | Indoor |
| Are Batteries Included | No |
| Are Batteries Required | No |
| Brand | ELECOM |
| Button Quantity | 5 |
| Color | Grey |
| Compatible Devices | Personal Computer |
| Connectivity Technology | USB |
| Customer Reviews | 3.8 3.8 out of 5 stars (35) |
| Hand Orientation | Right |
| Hardware Platform | PC |
| Item Dimensions L x W | 7L x 8W millimeters |
| Item Type Name | Trackball |
| Item Weight | 0.03 Ounces |
| Manufacturer | ELECOM |
| Mfr Part Number | M-RS10 |
| Minimum Required Operating System Version | Windows 10 |
| Model Name | M-RS10 |
| Model Number | M-RS10 |
| Movement Detection | Trackball |
| Operating System | Windows 10 |
| Power Source | Corded Electric |
| Style Name | Modern |
| Unit Count | 3 Count |

## Product Details

- **Brand:** ELECOM
- **Colour:** Grey
- **Connectivity technology:** USB
- **Movement detection technology:** Trackball
- **Special features:** Ruby Ball Beairng

## Images

![ELECOM Trackball Replacement Ruby Ball Bearing Unit,Compatible IST Trackball M-IT10 and M-IT11, Gray (M-RS10) - Image 1](https://m.media-amazon.com/images/I/61-k5wGZQ2L.jpg)
![ELECOM Trackball Replacement Ruby Ball Bearing Unit,Compatible IST Trackball M-IT10 and M-IT11, Gray (M-RS10) - Image 2](https://m.media-amazon.com/images/I/71Ao00Y7i2L.jpg)
![ELECOM Trackball Replacement Ruby Ball Bearing Unit,Compatible IST Trackball M-IT10 and M-IT11, Gray (M-RS10) - Image 3](https://m.media-amazon.com/images/I/61tH6A6lpEL.jpg)
![ELECOM Trackball Replacement Ruby Ball Bearing Unit,Compatible IST Trackball M-IT10 and M-IT11, Gray (M-RS10) - Image 4](https://m.media-amazon.com/images/I/612qYn484IL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***A on 14 August 2025*

なんとも複雑な感想になってしまいますが、ISTの最大の特徴であるベアリングモデルを購入したのですが、シャーッと回転する音が気になったのとカーソルの挙動が落ち着かない印象で、どうにもしっくりこない… とはいえせっかく買ったものですし、こちらの人工ルビーユニットに交換してみたのですが、おお、使い慣れたいつものトラックボールだ！ これが好評なのか悪評なのか自分でも判断が難しいのですが、今現在はとても気に入って愛用しています。 たまに気分転換にまたベアリングに戻してみるのもいいかも。

### ⭐⭐⭐⭐⭐ Review
*by O***F on 29 January 2025*

After about 10 minutes of fiddling I got the installation figured out and it went together in about two minutes. The action is some what smoother but a tad slower. For anyone familiar with folding knives it is like the difference between a PB bushing and ceramic bearing action. Both are good but the roller bearings feel a little bit crisper. I'm leaving them in for now and will update if necessary. One day after installing them I took them out and put the bearings back in. Much prefer the looser feel of the originals.

### ⭐⭐⭐ Review
*by J***. on 17 March 2026*

I got a set of these for my Huge Pro, after my original Huge got on my nerves with poor wireless performance in my new desk setup. The mouse is great, but the roller bearings feel jittery. Okay, so what to do? Install the same ruby co tact bearings they had in the original Huge! Right? Well, sort of. These bearings are ruby, sure (UV testing show it). They fit in roughly the same positions as the old Huge. The feel is good in motion. But, contrary to the whole concept of hardened contact bearings, there's friction involved. I have to press into the ball just more than I'd say is comfortable to get the needed traction to overcome the initial friction of the bearings. There's a 'stickiness' when starting motion as you overcome a coefficient of friction that should not exist with these. Oddly, I can use the old ball from my Huge in my Huge Pro and these bearings feel far better. This makes me wonder if the ball itself changed to favor the roller bearings and not rubies. However, better is not great, and both balls feel great in the old mouse. I think the build of these may be to blame. The original Huge had rubies embedded into the plastic directly (maybe glued, maybe heat set?). These have the removable interface to house them, and they feel in there tight... but the i terface itself can tilt and rock in the slots they install into. This adds a certain slop where the rubies may be out of ideal alignment for proper contact with the trackball. That slop doesn't matter with roller bearings, because rollers use that slop to function. If they made a more secure mounting option, these might fare better. I'm hesitant to glue (UV resin, rather) these into the mouse permanently so they slop is removed. Also worth noting a flaw: If you remove these bearings, there is a strong chance the rubies will pop out the housings from the shock force. They are not secured well, and a hint of super glue can fix that if you apply it carefully (I used the end of a toothpick) before setting the ruby back in place. This further makes me thing the build quality or engineering are not quite right with these replaceable bearings. Installation is easy once you understand how the sockets work. Place the bottom in most of the way, then rock the top into place; the whole mechanism just sets when doing that. As for removal, the provided hook tool works fine—just commit to the fact that the bearing will violently pop out and fall into the trackball well rather than stay in your control. I cover the well with my second hand to contain the buggers, as a roller bearing flew a few feet away, even. Easy to do, just also easy to lose parts on removal as well. I'll keep using the roller bearings for now. These ruby bearings will likely replace them when the rollers get sluggish, and I'll be gluing the rubies in permanently to make them lower tolerance. Shame these involve risking a permanent installation to (hopefully) work properly.

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-04-27*