High Speed MR18338 Bicycle Hub Bearing with Z/RS Seals

High Speed MR18338 Bicycle Hub Bearing with Z/RS Seals

⚙️Product Description:

The MR18338 Z / RS deep groove ball bearing is a lightweight, low‑friction, and high‑precision bearing widely used in high‑performance bicycle wheelsets, hubs, and pulley systems.
Its deep‑groove raceway provides excellent radial load capacity while maintaining smooth, efficient rotation.

You can select the sealing type based on your needs:

      • Z (Metal Shield) – Lower rolling resistance, higher RPM

      • RS (Rubber Seal) – Superior protection against dust, water, and mud

⚙️Technical Parameters:

⚙️Main Features:

• Deep groove design for smooth and quiet rotation

• Lightweight structure ideal for performance wheelsets

• Optional Z/RS sealing for efficiency or enhanced protection

• Precision‑ground raceways for extended durability

• Pre‑lubricated for long service life

• Supports high‑speed hub applications

 

Bearings No.	d*D*H(mm)	WT(KG)	Bearings No.	d*D*H(mm)	WT(KG)
12267RS	12*26*7	0.0151	19307RS	19*30*7	0.0234
15267RS	15*26*7	0.0124	190537RS	19.05*37*9	0.004
152610RS	15*26*10	0.012	19317RS	19*31*7	0.023
16257RS	16*25*7	0.014	19379RS	19*37*9	0.037
16287RS	16*28*7	0.014	22317RS	22*31*7	0.032
17287RS	17*28*7	0.0131	22379RS	22*37*9	0.037
163110RS	16*31*10	0.0258	215317RS	21.5*31*7	0.014
173110RS	17*31*10	0.0254	24377RS	24*37*7	0.019
6805-RD	25*37*6	0.02	24378RS	24*37*8	0.0232
30406RS	30*40*6	0.018	18338RS	18*33*8	0.023

 

⚙️Bearing Applications:

Perfect for road bikes, MTB, gravel bikes, and various performance wheelset applications.

• 

  Road Bikes 
• 

  Mountain Bikes
• 

   City Commuter Bikes

 

 

⚙️Precautions:

1. Keep clean	2. Use with caution	3. appropriate tool	4. Hot-loading	5. Be careful of rust
Dust will have a bad effect on the bearing, so keep the surrounding clean.	Strong impact during use can easily cause scratches and indentations.	Avoid replacing existing tools, and use appropriate tools.	Bearings are precision parts, so hot installation is recommended.	Sweat on your hands during operation will cause rust, so it is best to wear gloves.

⚙️Obtain Certificate:

About Rimao

Since its establishment in 2011, Rimao Bearing has combined international vision with local wisdom and injected innovative ideas into every bearing and pulley with its profound industry accumulation and unremitting pursuit of technology. We have not only passed CE and ROHS certification, but also set a new benchmark in the industry and led the development trend of the bearing industry.

 

We are not just a ball bearing and roller bearing importer and wholesaler. We provide real solutions to help you achieve the product and design goals set by your customers. With more than 20 years of production and sales experience, tens of thousands of models and specifications, we look forward to cooperating with you!