Foifatt 20-Inch Lawn Mower Blade Compatible with Ryobi 40V – Half-Moon + Square Mount, Hardened Steel

Foifatt AC04029 is a 20-inch hardened-steel replacement lawn mower blade engineered to fit Ryobi 40V cordless mower models with the half-moon + square center hole.

If your Ryobi 40V brushless mower needs a new cutting edge, this Foifatt AC04029 blade offers an affordable, heavy-duty replacement designed for long life and clean cuts. It’s manufactured from hardened steel to resist wear and reduce the frequency of replacements. Before ordering, verify that your current blade has the specific “half-moon + square” center hole pattern so the blade mounts securely and runs true.

Will this blade fit my Ryobi 40V brushless mower?

The AC04029 was made to fit several Ryobi 40V brushless models that use a 20-inch blade with the half-moon + square mounting hole. Check your mower’s model number and compare the center hole pattern on your old blade to ensure compatibility. If the hole pattern doesn’t match, the blade will not seat or lock properly.

• Compatible models include PBLLM05, RY401170/RY401017, RY401180/RY401018.
• Verify the “half-moon + square” center hole before purchase.
• Not an original equipment manufacturer (OEM) part; fits same models as described.

How durable and sharp is the Foifatt AC04029 blade?

Made from hardened steel, this blade is designed to withstand typical lawn conditions and repeated impacts. It resists edge deformation and holds a cutting profile longer than soft metal alternatives. Regular sharpening and annual replacement will keep your mower cutting cleanly.

• Hardened-steel construction for improved wear resistance.
• Engineered to shed clippings and reduce buildup for consistent performance.
• Recommended replacement frequency: roughly once per year for most homeowners.

What cutting performance can I expect on different lawns?

The 20-inch Foifatt blade delivers a precise finish on typical residential turf, helping prevent clumping and promoting even discharge. Its geometry minimizes grass wrap-up beneath the deck and helps the mower mulch or side-discharge efficiently depending on your mower’s settings. For thick, wet, or rocky conditions, inspect the blade often for nicks and rebalance after sharpening.

• Designed to limit clippings buildup for cleaner cuts.
• Suits mulching and side-discharge use on compatible mower setups.
• Inspect and rebalance after hitting rocks or stumps to avoid vibration.

How do I install and maintain this replacement blade?

Installation follows standard mower blade replacement steps: disconnect battery, tilt mower to access the blade, unbolt the spindle, swap blades, and torque fasteners to the manufacturer’s spec. Keep the blade clean, sharpen as needed, and store in a dry place to prevent corrosion. Always follow safety guidelines and use proper tools.

• Disconnect the mower battery before starting any work.
• Use correct torque and a block to prevent blade rotation during removal.
• Sharpen with a file or grinder evenly; recheck balance after sharpening.

Who this is for: The Foifatt AC04029 blade is intended for homeowners and lawn-care enthusiasts who own compatible Ryobi 40V brushless mowers and want a durable, cost-effective replacement blade. It’s a practical choice if you need a hardened-steel 20-inch blade with the half-moon + square mounting pattern and prefer a reliable third-party alternative to OEM parts. Buyers who are unsure about fit should inspect their existing blade’s center hole and model numbers before purchasing.