Articles
Practical notes on mower blades for the people who buy and fit them — blade types, OEM numbers, steel grades and sourcing.
How Mower Blades Are Made: From Steel to Sharp Edge
A mower blade is made by cutting 40Mn steel to profile, hardening it to 45–50 HRC, then flattening, balancing and polishing it. The process turns a flat strip into a sharp, balanced cutting edge ready for the field.
10B38 Boron Steel vs 40Mn Mower Blades
Boron steel such as 10B38 adds hardenability at lower alloy cost than 40Mn, but 40Mn manganese steel remains our standard for 45-50 HRC blades. Choose 10B38 when a spec or extra through-hardness calls for it.
What Hardness Should a Mower Blade Be? 45-50 HRC
A mower blade should sit in the 45-50 HRC range: hard enough to hold a cutting edge, tough enough to absorb impacts without cracking. Harder is not better, and softer is not safer.
The Universal Mower Blade Myth Explained
A universal mower blade fits only a narrow overlap of decks. True fitment depends on the centre-hole pattern, blade length and rotation hand, and those differences are why no one blade suits every mower.
How to Tell If a Mower Blade Is Upside Down
A mower blade is upside down when its lifting sail faces the ground instead of the deck, pushing air down instead of lifting grass. Check the sail, stamp and bend before you bolt it on.
How to Read a Mower Blade Part Number
A mower blade part number carries the brand prefix, the profile digits and a type suffix. Reading all three tells you the deck, the shape and the blade style before you order.
Left-Hand vs Right-Hand Mower Blades
Left-hand and right-hand mower blades differ by rotation direction. A right-hand blade spins clockwise and lifts on the right; a left-hand blade spins counter-clockwise. Match the hand to your spindle.
Mower Blade Center Hole Types Explained
A mower blade centre hole comes in round, star, keyed and multi-bolt forms. The shape decides whether the blade seats on the spindle, so match it before you order.
Mower Blade Offset and Pitch Explained
Mower blade offset is the step from the centre hole to the cutting plane; pitch is the blade's angle of attack. Both set cut height and deck clearance, not only the fit.
Simplicity Mower Blade Replacement by Number
Simplicity mower blades are matched by the stamped part number and confirmed with deck width and centre-hole type, because the brand's decks follow the AYP/Snapper spindle pattern shared with several North American labels.
Poulan Pro Mower Blade Replacement by Number
Poulan Pro mower blades are matched by the stamped OEM number and confirmed with deck width and centre-hole type, because the brand shares the AYP/Husqvarna spindle pattern with several labels.
Murray Mower Blade Cross Reference by Number
Murray mower blades are matched by the part number stamped near the centre hole and confirmed by deck width and centre-hole type — so a replacement seats correctly and cuts cleanly.
Gravely Mower Blades: Deck Size & Fitment Guide
Gravely mower blades are matched by deck width, centre-hole type, length and lift — not by the model name alone — so the blade seats on the spindle and cuts cleanly.
Ferris Mower Blades: Deck Size & Fitment Guide
Ferris mower blades are matched by deck width, centre-hole type, length and lift — not by the model name alone — so the blade seats on the spindle and cuts cleanly.
Hustler Blade Cross Reference: Find the Right Number
Hustler mower blades carry a stamped part number that matches length, centre hole, thickness and lift to your deck. A correct cross reference uses that number plus your deck width to find a replacement that seats and cuts.
Bad Boy Mower Blade Numbers: Fitment Guide
Bad Boy mower blades carry part numbers stamped near the centre hole. A correct replacement matches the number with deck width, centre-hole type, thickness and lift — not the number alone.
Scag Mower Blade OEM Numbers: Cross-Reference Guide
Scag mower blades carry OEM part numbers stamped near the centre hole. A correct cross reference matches the number with deck width, centre-hole type, thickness and lift — not the number alone.
Exmark Mower Blade Cross Reference by Part Number
Exmark mower blades carry part numbers stamped on the blade and listed in the parts manual. A correct cross reference matches length, centre hole, thickness and lift type — not just the number.
Ariens Mower Blade Replacement by Part Number
Ariens mower blades are identified by a stamped part number, and the correct replacement must match that number with your deck width and centre-hole type. Read the stamping on the old blade to order a blade that seats and cuts correctly.
MTD Mower Blade Cross Reference by Number
MTD builds decks for several household brands, so a single 942- or 742- blade number often crosses to Cub Cadet, Troy-Bilt, Craftsman and Yard Machines. Match the number with deck width and centre hole to order a blade that seats and cuts correctly.
Husqvarna Mower Blade Cross Reference by Number
Husqvarna decks use AYP-family 532- part numbers, so many blades cross to Craftsman, Poulan and AYP. Match the stamped number with deck width and centre hole to get a blade that seats and cuts correctly.
Troy-Bilt Mower Blade Replacement by OEM Number
Troy-Bilt decks come from the MTD family, so its blades share the 942- and 742-series numbers with Cub Cadet, Craftsman and MTD. Match the number with deck size, centre hole and lift to get a blade that seats correctly.
Cub Cadet Mower Blade OEM Numbers by Deck Size
Cub Cadet blades use the MTD-family 942- and 742-series format, so many numbers cross to Craftsman, Troy-Bilt and MTD. A correct match pairs the number with deck size, centre hole and lift.
Craftsman Mower Blade Cross Reference by Number
Craftsman blades are built on shared MTD-family tooling, so many numbers cross to Cub Cadet, Troy-Bilt and MTD. A correct match pairs the number with deck size, centre hole and lift.
Honda Mower Blade Replacement: HRX & HRR Fitment
Honda mower blades are replaced when the edge is rounded, nicked or bent, and the correct replacement is found by matching the stamped part number to your deck width and blade mounting pattern.
Toro Mower Blade OEM Numbers: Cross-Reference Guide
Toro mower blades carry OEM numbers stamped near the centre hole and on the deck plate. A correct match pairs that number with deck width, centre-hole type and lift — not the number alone.
John Deere Blade Cross Reference by GX and AM Numbers
John Deere mower blades carry GX and AM part numbers stamped on the blade and the deck plate. A correct cross reference matches length, centre hole, thickness and lift type — not just the number.
High-Lift Blades for Bagging: How They Work
High-lift blades for bagging use a steeply curved sail that throws clippings upward into the grass catcher instead of leaving them on the lawn. They suit dry, open turf where a collected finish is wanted.
Flail Mower Blades Explained
A flail mower blade is a short, replaceable knife on a pivoting arm that shreds grass and brush into mulch and folds back on impact, making it safer on rocky or sloped ground.
Trimmer Blade vs Line Head
A trimmer blade cuts thick weeds and light brush that would snap a line head instantly, while a line head trims grass and edging safely near stones and fences.
Brush Cutter Blade Types
Brush cutter blade types range from light 4-tooth knives for grass to heavy brush blades for saplings and nylon discs for tidy edging — pick by what you actually cut.
Riding Mower Blade Selection Guide
Riding mower blades must match the deck's cutting width, centre-hole pattern, and blade count before anything else — only then does lift profile decide how the cut looks.
Zero Turn Mower Blades Explained
Zero turn mower blades are deck-specific cutting members that run at higher tip speeds than most other decks, so they must match the deck's length, centre-hole pattern, and lift profile before anything else.
Commercial vs Residential Mower Blades
Commercial mower blades are built thicker and hardened for all-day cutting, while residential blades are lighter for weekly mowing. The real differences are in steel thickness, hardness, and how long the edge survives continuous load.
Mulching Blades for Leaves: Shred, Don't Bag
For autumn leaves, a mulching blade is the right tool: it keeps clippings under the deck and cuts them into a fine mulch that returns nutrients to the soil instead of going into a bag.
Mower Blade for Wet Grass: Why High-Lift Stops Clogging
A high-lift blade is the practical choice for wet grass: its deep airfoil throws damp clippings clear instead of letting them mat under the deck. Keep the edge sharp and the deck clean.
Low Lift vs High Lift Mower Blades: Which to Choose?
Lift is the upward bend at the back of a blade that controls airflow. Low lift suits dusty ground and side discharge; high lift fills a bagger fast. Match lift to how you collect clippings.
Toothed vs Straight Mower Blades: Which Cuts Better?
Toothed blades shred leaves and tough stems with a serrated edge; straight blades make a single clean cut and keep airflow free. Pick the edge to match the material you actually cut.
Gator Blades vs Mulching Blades: What Actually Changes?
Gator blades are a toothed mulching pattern, not a different blade. Here is how the serrated edge changes the cut — and when a standard mulching blade is the better choice.
How to Sharpen Lawn Mower Blades: Angle and Tools
A sharp blade cuts clean; a dull one tears the grass and strains the engine. Here is the angle, the tools, and the point where you should replace the blade instead of sharpening it again.
How to Measure a Mower Blade Before You Order
A part number is faster when you have one. When you do not, these five measurements are what actually decide whether the blade fits.
Mower Blade Steel and Hardness: 40Mn, 45-50 HRC
Steel grade and hardness are the two numbers that decide how a blade ages. Here is what they mean — and how to check that a supplier is telling the truth.
How to Match a Mower Blade to an OEM Part Number
An OEM number is the shortest path to the right blade. Here is where to find it, how to read it, and where cross-referencing goes wrong.
Mulching vs High-Lift Blades: Which Do You Need?
The blade type changes airflow, not just the edge. Here is what each type actually does to your cut — and what decides whether it fits at all.
Ordering Mower Blades from China: A Buyer's Checklist
Steel grade, hardness reports, MOQ and tooling — the six things to pin down before you place a first order with a blade factory.