KANXAJJY M143520 Medium-Lift Lawn Mower Blades 3-Pack for 54" Deck – 18-7/8" 13/16" Hole

KANXAJJY M143520 three-pack medium-lift blades are direct-fit replacements for John Deere UC22010/M143520, engineered for 54-inch decks to restore cutting performance on compatible lawn tractors.

If your mower is leaving uneven clippings, tearing grass, or producing a thin, scalped finish, fresh blades designed to match OEM fit and lift can make the biggest difference. These three 18-7/8" medium-lift blades mirror the original mounting hole and dimensions for a tidy installation on many John Deere 54" decks. They’re heat-treated steel with the thickness and center hole size meant to align with common tractor models, so you can swap them in without modifying the deck.

Will these blades fit my John Deere model?

Check the part numbers and deck size first: these blades replace John Deere M143520 and UC22010 and are intended for 54-inch cutting decks. Confirm your deck is 54" and that your current blade has a 13/16" center hole and matching shape before purchasing to ensure compatibility.

• Replaces OEM numbers: John Deere M143520 and UC22010, Windsor 50-4441.
• Designed for 54" decks — blade length 18-7/8", width 2-3/4", thickness 0.197".
• Verify center hole: 13/16" and matching profile to avoid fit issues.
• Fits many models including Z425, Z445, X340, X380 and select GX series.

How do medium-lift blades affect cutting and bagging?

Medium-lift blades balance airflow and discharge: they lift grass enough for a clean cut while avoiding the strong suction of high-lift designs that can overload some decks. That makes them a sensible choice when you want good bagging and side-discharge without compromising engine load or deck airflow.

• Create steady airflow to lift grass for an even cut.
• Support both side-discharge and bagging on compatible decks.
• Reduce unnecessary strain compared to high-lift blades in some systems.
• Maintain a finer clippings discharge for cleaner lawns.

What are the key specs and installation points I should know?

Each blade is 18-7/8" long, 2-3/4" wide and 0.197" thick, with a 13/16" center mounting hole. Installation is straightforward: remove old blades, match hole shape and bolt pattern, then torque the mounting hardware to the tractor manufacturer’s specification for safe operation.

• Blade dimensions: 18-7/8" length, 2-3/4" width, 0.197" thickness.
• Center hole: 13/16" — confirm shape before ordering.
• Package contains three blades — replace all blades for balanced cutting.
• Use manufacturer torque specs when fastening blades to spindles.

How long will these replacement blades last and how should I maintain them?

Blade lifespan depends on use, terrain, and whether blades hit hard objects, but routine sharpening and avoiding impacts extend service life. Inspect blades for nicks and balance after each sharpening cycle; replace immediately if you find significant bends or cracks to maintain safety and cut quality.

• Sharpen blades periodically for crisp cutting and reduced turf stress.
• Check blade balance after every sharpening to avoid vibration.
• Avoid cutting rocky or gravel-filled areas to prevent damage.
• Replace blades in matched sets (all three) to keep deck balance.

Who is this for? These KANXAJJY M143520 medium-lift blades suit owners of John Deere and compatible tractors with 54" decks who need an OEM-style replacement without modifying deck components. Ideal for homeowners and groundskeepers seeking reliable, dimension-matched blades to restore cutting performance, improve bagging or discharge, and maintain even, healthy-looking turf. Always verify your model and center hole shape before ordering to ensure a correct fit.