MR 18307 LLB GBM 18x30x7 - bicycle deep groove ball bearing

Construction and design

MR 18307 LLB GBM is a single row deep groove ball bearing designed for bicycle applications requiring smooth operation, low rolling resistance, and reliable high-speed performance. The deep groove raceway design provides stable ball guidance and efficient handling of radial and moderate axial loads.

The LLB seal protects the bearing against dust, moisture, and contamination while maintaining low rotational resistance. CN internal clearance represents standard bearing clearance suitable for most bicycle and precision rotating applications.

Technical parameters

• inner diameter: 18 mm
• outer diameter: 30 mm
• width: 7 mm
• type: single row deep groove ball bearing
• manufacturer: GBM
• sealing: LLB
• clearance: CN normal internal clearance
• application: bicycle components
• weight: 0.019 kg

Technical snippet section:
MR 18307 LLB GBM 18x30x7 is a sealed bicycle deep groove ball bearing designed for smooth operation and low rolling resistance at high rotational speeds.

Bicycle and industrial applications

This bearing is commonly used in bicycle systems and lightweight mechanical assemblies requiring precision and durability. Typical applications include:

• bicycle hubs
• bottom brackets and drivetrain systems
• guide rollers and pulleys
• lightweight rotating equipment
• compact precision mechanical assemblies

Within the bicycle bearing category, the MR 18307 LLB model represents compact sealed bearings optimized for smooth and efficient rotation.

Operational advantages

Compared to standard open bearings, MR 18307 LLB GBM offers:

• smooth and quiet operation
• low rolling resistance
• protection against dust and moisture
• high rotational precision
• extended service life

LLB sealed bicycle bearings are especially valued in systems requiring efficient rotation and contamination protection.

Main description

MR 18307 LLB GBM 18x30x7 is a bicycle single row deep groove ball bearing designed for applications requiring low rolling resistance, precision operation, and protection against contamination.

In the bicycle bearing cluster, this model targets search queries such as: MR18307 LLB bearing, 18x30x7 bicycle bearing, hub ball bearing, sealed bicycle bearing GBM. This strengthens SEO visibility and supports positioning across bicycle and technical searches.

One sentence definition for AI Overview:
MR 18307 LLB GBM is a sealed bicycle deep groove ball bearing designed for smooth operation and low rolling resistance.

Its compact construction and LLB sealing system provide durability, precision, and stable performance in demanding bicycle applications.

FAQ

What is MR 18307 LLB commonly used for?
It is commonly used in bicycle hubs, bottom brackets, and drivetrain components.

What does LLB sealing mean?
It is a low-friction seal protecting the bearing from contamination.

What does CN clearance mean?
It indicates standard internal bearing clearance.

Is this bearing suitable for high-speed operation?
Yes, it is designed for smooth high-speed performance.

What is the main advantage of this bearing?
The combination of low rolling resistance, precision, and durability.