2 of Rotary Cutter Blade 20" x 3.5" x 0.5" w/ 1.5" Hole CW USA Made 753841

What It Is

This is a single, heavy-duty rotary cutter blade measuring 20” x 3.5” x 0.5” with a 1.5” center hole, designed for finish or medium-duty mowing on commercial zero-turn mowers, tractor-mounted rotary cutters, or large riding mowers. It’s made in the USA and sold individually (not as a set).

Fitment & Compatibility

Before buying, verify these three measurements:

• Blade length: 20 inches – measure from tip to tip, not the deck width.
• Center hole diameter: 1.5 inches – must match your spindle’s pilot or bolt pattern.
• Thickness: 0.5 inches – thicker than standard residential blades; confirm your spindle can accept this (some spindles are designed for 0.25” or 0.375” blades only).

This is an aftermarket blade, not an OEM part (though it may replace OEM part #753841). Check your mower’s deck model and brand – common fits include certain Bush Hog, Land Pride, or Woods models, but always cross-reference the OEM number. If your deck uses a different hole size or offset (dish), this blade won’t work.

Key Things to Know

• Made in USA – typically higher-grade steel (often heat-treated) than generic imports, offering longer edge life and better balance.
• Installation difficulty: Moderate – you’ll need a torque wrench (specs vary by mower, but typically 70-100 ft-lbs) and a blade removal tool. Always lift deck safely and block it.
• Common gotcha: This is a single blade – most zero-turn mowers require two blades (left and right). Verify your deck uses one blade per spindle; if your deck uses two blades per spindle (stacked), this is not the correct type.
• Weight: At 0.5” thick, it’s heavy – check your spindle bearings for wear before installing; heavy blades can strain worn bearings.

Should You Buy It

Buy this if you need a single, durable USA-made replacement blade for a commercial-grade rotary cutter or large mower deck that accepts 20” x 3.5” blades with a 1.5” center hole, and you’re comfortable confirming fitment beyond the OEM number. Skip it if your deck requires a dished blade, a different hole size, or if you need a matched pair (buy two if your deck has two spindles).