Best Bearings for Lawn Mowers: Sizes, Types, and What to Use

Quick Answer: The most common bearings used in lawn mowers are 6203, 6204, and 6205. For durability, 2RS sealed bearings are usually the best choice because they protect against dirt, grass, and moisture.

If you’re repairing or maintaining a lawn mower, choosing the right bearing is critical. The wrong bearing can wear out quickly, especially in environments with dirt, grass, and moisture.

This guide explains the most common bearing sizes used in lawn mowers and which types last the longest.

Most Common Lawn Mower Bearing Sizes

Lawn mowers use standard deep groove ball bearings. The most common sizes include:

• 6203 – Smaller applications and light-duty components
• 6204 – Medium-duty mower parts
• 6205 – Heavy-duty use, spindles, and larger assemblies

These bearings are widely used because they are reliable, easy to replace, and available in multiple seal types.

Best Bearing Type for Lawn Mowers

2RS (Rubber Sealed Bearings) – BEST OPTION

For most lawn mower applications, 2RS bearings are the best choice.

• Keep out dirt and grass debris
• Resist moisture and water exposure
• Require less maintenance
• Last longer in outdoor environments

Since lawn mowers operate in rough conditions, protection matters more than speed.

ZZ Bearings – SECOND OPTION

ZZ bearings can work, but they are better suited for cleaner environments.

• Some dust protection
• Higher speed capability
• Less protection than 2RS

They may not last as long in heavy grass, dirt, or wet conditions.

Open Bearings – NOT RECOMMENDED

Open bearings are rarely used in lawn mowers because they are exposed to dirt and moisture.

• No protection
• Require constant lubrication
• Short lifespan in outdoor conditions

Where Are Bearings Used in Lawn Mowers?

Bearings are commonly found in:

• Blade spindles
• Wheel hubs
• Electric motors
• Pulleys and belt systems

The spindle area is especially demanding, which is why using sealed bearings is critical.

How to Choose the Right Bearing

• Match the exact size (example: 6205)
• Choose sealed (2RS) for protection
• Consider load and usage conditions
• Avoid open bearings for outdoor use

Where to Buy Lawn Mower Bearings

If you need a common size like 6205 with sealed options, you can view it here:

Shop 6205 Bearings (Open, ZZ, 2RS Options)

Bulk Orders for Repair Shops

If you repair multiple mowers or run a shop, buying bearings in bulk can save time and money.

Request Bulk Pricing Here

Final Thoughts

For lawn mowers, durability matters more than speed. That’s why 2RS sealed bearings are usually the best choice.

Choosing the right size and seal type will help your equipment last longer and reduce maintenance over time.