---
product_id: 48541939
title: "2PCS 6903 Ceramic Bearing 17x30x7mm 6903-2RS Si3N4 Ceramic Ball Bearing ABEC-5"
brand: "hmmbw"
price: "KSh7887"
currency: KES
in_stock: true
reviews_count: 8
category: "Hmmbw"
url: https://www.desertcart.co.ke/products/48541939-2pcs-6903-ceramic-bearing-17x30x7mm-6903-2rs-si3n4-ceramic-ball
store_origin: KE
region: Kenya
---

# ABEC-3 precision ±0.005mm Hybrid ceramic + steel build Durable PA66 low-friction cage 2PCS 6903 Ceramic Bearing 17x30x7mm 6903-2RS Si3N4 Ceramic Ball Bearing ABEC-5

**Brand:** hmmbw
**Price:** KSh7887
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Ride Smooth, Ride Fast – Bearings That Keep You Ahead

## Quick Answers

- **What is this?** 2PCS 6903 Ceramic Bearing 17x30x7mm 6903-2RS Si3N4 Ceramic Ball Bearing ABEC-5 by hmmbw
- **How much does it cost?** KSh7887 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/48541939-2pcs-6903-ceramic-bearing-17x30x7mm-6903-2rs-si3n4-ceramic-ball)

## Best For

- hmmbw enthusiasts

## Why This Product

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

## Key Features

- • **Fit & Forget:** Compact 17x30x7mm size fits seamlessly into your bike wheel for a quick upgrade that lasts.
- • **Ready to Roll:** Comes pre-lubricated with premium grease for instant, maintenance-free performance.
- • **Precision Perfected:** ABEC-3 rating ensures minimal runout (±0.005mm) for flawless, high-performance cycling.
- • **Hybrid Ceramic Power:** Steel races combined with Si₃N₄ ceramic balls for unmatched durability and ultra-smooth rotation.
- • **Friction? What Friction?:** Low-friction PA66 polymer cage reduces drag, boosting speed and efficiency on every ride.

## Overview

These 2PCS 6903 hybrid ceramic ball bearings feature steel races paired with Si₃N₄ ceramic balls, delivering superior durability and reduced friction. Rated ABEC-3 for precision with ±0.005mm runout, and equipped with a low-friction PA66 polymer cage, they come pre-lubricated with premium grease. Sized 17x30x7mm, they are ideal for cycling applications requiring smooth, reliable performance and quick installation.

## Description

Product Note: Seal cap colors are randomly assorted—each variant meets the same high-performance standards, guaranteeing consistent quality across all units. Package Includes: 2 × 6903 ABEC-3 Precision Hybrid Bearings (dimensions: 17x30x7mm). Engineered for reliability, reduced friction, and long-term durability, these bearings are ideal for precision applications.

Review: Good - Quality 100%
Review: amazing feel, smooth bearings in my bike wheel - they fit perfect, took 10min to replace two bearings in one wheel. much better feeling wheel

## Features

- ✔Type: Hybrid ceramic ball bearing
- ✔ Material: Steel races + Si₃N₄ ceramic balls
- ✔ Precision: ABEC-3 rating (±0.005mm runout)
- ✔ Cage: PA66 polymer (low friction)
- ✔ Lubrication: Premium grease included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0755W113H |
| Bearing Number | 6903 2RS |
| Bearing Type | Ball Bearing |
| Best Sellers Rank | #203,059 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,422 in Deep-Groove Ball Bearings |
| Brand | HMMBW |
| Brand Name | HMMBW |
| Compatible Lubricant | Oil, Grease |
| Customer Reviews | 4.2 out of 5 stars 82 Reviews |
| Item Dimensions | 1.18 x 1.18 x 0.28 inches |
| Item Height | 7 millimeters |
| Item Thickness | 7 Millimeters |
| Item Weight | 20 Grams |
| Item dimensions L x W x H | 1.18 x 1.18 x 0.28 inches |
| Manufacturer | Shanghai |
| Material | Si3N4+Bearing Steel |
| Material Type | Si3N4+Bearing Steel |
| Outside Diameter | 30 Millimeters |
| UPC | 711202205307 |

## Product Details

- **Brand:** HMMBW
- **Material:** Si3N4+Bearing Steel
- **Item dimensions L x W x H:** 1.18 x 1.18 x 0.28 inches
- **Item Weight:** 20 Grams
- **Bearing Number:** 6903 2RS

## Images

![2PCS 6903 Ceramic Bearing 17x30x7mm 6903-2RS Si3N4 Ceramic Ball Bearing ABEC-5 - Image 1](https://m.media-amazon.com/images/I/711P0gQNtgL.jpg)
![2PCS 6903 Ceramic Bearing 17x30x7mm 6903-2RS Si3N4 Ceramic Ball Bearing ABEC-5 - Image 2](https://m.media-amazon.com/images/I/71Mty77Ee2L.jpg)
![2PCS 6903 Ceramic Bearing 17x30x7mm 6903-2RS Si3N4 Ceramic Ball Bearing ABEC-5 - Image 3](https://m.media-amazon.com/images/I/71sKq0yunKL.jpg)

## Questions & Answers

**Q: Does it come in pairs?**
A: 2pcs = 2 pieces.  Yes.  Two.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by M***S on October 27, 2024*

Quality 100%

### ⭐⭐⭐⭐⭐ amazing feel, smooth bearings in my bike wheel
*by D***L on September 17, 2024*

they fit perfect, took 10min to replace two bearings in one wheel. much better feeling wheel

### ⭐⭐⭐⭐ Looks like good bearings
*by M***V on September 30, 2023*

The internal diameter is 16.5 mm, not 17. Unable to install to my bike front hub.

## Frequently Bought Together

- 2PCS 6903 Ceramic Bearing 17x30x7mm 6903-2RS Si3N4 Ceramic Ball Bearing ABEC-5
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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-26*