Rotary Corp Blade Straight 22" X 3/8" Universal

What It Is

The Rotary Corp Blade Straight 22" x 3/8" is a universal replacement blade for walk-behind lawn mowers with a 22-inch cutting deck. It’s designed for standard residential mowing of grass and light weeds, not for mulching or bagging unless your deck is specifically set up for a straight blade.

Fitment & Compatibility

This blade fits any mower with a 22-inch deck that uses a 3/8-inch center hole. Before buying:

• Measure your deck width – must be exactly 22 inches (blade length is 22 inches tip-to-tip).
• Check your center hole diameter – it must be 3/8 inch. Some newer mowers use a 5/8-inch or 1-inch hole; this won’t fit those.
• Verify blade mount type – this is a straight blade, not a mulching or high-lift blade. It works with most standard single-blade mowers (e.g., Toro, Craftsman, Husqvarna, Murray, MTD). Check your owner’s manual for OEM part number cross-reference (e.g., 42-100, 742-0426, 490-500-M091).
• Aftermarket note – Rotary Corp is a well-known aftermarket brand. It’s not OEM, but it meets or exceeds SAE J1964 blade standards. Confirm your deck’s blade adapter/centering pin matches a 3/8-inch hole.

Key Things to Know

• Quality – Made from heat-treated, tempered steel. Sharp out of the box, but edge life is average for a budget blade. Resharpenable.
• Installation difficulty – Easy. Use a socket wrench (3/8-inch drive) and a block of wood to lock the blade. Torque to 30-40 ft-lbs; overtightening can strip the adapter or blade.
• Common gotchas – Straight blades don’t create strong lift. If your mower has a mulching plug or bagger, this blade may leave clumps. Also, some 22-inch decks use a 21-inch blade – measure twice.
• No vibration issues – Balanced well from factory, but check balance after sharpening.

Should You Buy It

This blade is a solid value for a standard, no-frills replacement on a 22-inch push mower used for basic grass cutting. If you need a mulching, high-lift, or bagging blade, or your mower uses a different center hole size, skip it. For the price, it’s a dependable choice for budget-conscious DIYers who don’t need specialized blade performance.