ENDURO CO MR 18307 LLB Enduro Zero Ceramic Hybrid ABEC-5 Radial Bearing – 18x30x7mm

The ENDURO CO MR 18307 LLB Enduro Zero Ceramic Hybrid Radial Bearing is engineered for riders and mechanics who need high-performance durability with smoother rolling efficiency. Built with black-oxide treated 52100 high-carbon chromium alloy races and premium Grade 5 Silicon-Nitride ceramic balls, this bearing is designed to reduce friction, lower wear, and provide a longer service life. The ceramic hybrid construction minimizes steel-to-steel contact, helping the bearing perform efficiently under demanding riding conditions. Equipped with dual-lip LLB labyrinth seals and packed with 90% Mobilux NGLI 2 high-pressure waterproof synthetic grease, it delivers excellent protection against moisture, dirt, and contaminants. Commonly used in hubs, older square taper bottom brackets, and some pivot applications, this Enduro bearing combines precision engineering with reliable long-term performance for road, MTB, and demanding riding environments.

Key Features

• Bearing Type: Ceramic Hybrid Radial Bearing

• Series: Enduro Zero

• Precision Rating: ABEC-5

• Clearance Type: C3 Clearance

• Ceramic Balls: Grade 5 Silicon-Nitride (Si3N4)

• Race Material: Black-oxide treated 52100 High-Carbon Chromium alloy

• Seal Type: Dual-lip LLB labyrinth seals

• Grease Fill: 90% Mobilux NGLI 2 waterproof synthetic grease

• Corrosion Protection: Black oxide treatment improves resistance against rust and environmental exposure

• Reduced Friction: Ceramic ball design reduces rolling resistance and wear

• Long Service Life: Decreases internal steel-on-steel contact for better durability

• Application: Hub bearings, older square taper bottom brackets, and selected pivot systems

Product Specifications

• Model: CO MR 18307 LLB

• Brand: Enduro Bearings

• Bearing Standard: ABEC-5

• Bearing Style: Radial Bearing

• Clearance: C3

• Inner Diameter (ID): 18mm:

• Outer Diameter (OD): 30mm:

• Width: 7mm:

• Ball Material: Grade 5 Silicon Nitride Ceramic:

• Race Material: 52100 High-Carbon Chromium Alloy:

• Seal Design: Dual-Lip LLB Labyrinth:

• Grease Type: Mobilux NGLI 2 Synthetic Waterproof Grease:

Bearing Protection Technology

• Deep groove race construction allows larger ball placement for improved load handling

• Dual-lip LLB seals sit inside micro-grooves creating a complete labyrinth barrier

• Helps prevent dirt, mud, dust, and water contamination

• Black oxide treatment provides an additional protective layer against corrosion

• Designed for reliable operation in demanding outdoor riding conditions

Easy Operation / Usage

• Verify bearing dimensions before installation

• Clean hub or bottom bracket housing before fitting

• Press the bearing evenly using proper bearing tools

• Avoid direct hammer impact during installation

• Inspect seals periodically for maximum lifespan and smooth operation

Why Choose This Product

• Premium ceramic hybrid design for reduced rolling resistance

• ABEC-5 precision offers smoother and more accurate performance

• High-quality sealing system protects against harsh riding environments

• Long-lasting construction reduces maintenance needs

• Excellent for cyclists seeking higher efficiency and durability

• Trusted Enduro engineering built for demanding applications

In the Box

• 1 x ENDURO CO MR 18307 LLB Ceramic Hybrid ABEC-5 Radial Bearing