Rotary mower blades for Kubota 54" deck — pack of 3, 18 11/16" length, 1 1/8" center hole, direct-fit replacement

Three replacement rotary mower blades engineered to match Kubota 70000-25004 / 76529-34330 specifications for 54" decks, each blade measuring 18 11/16" with a 1 1/8" center hole.

These Rotary 6265 blade sets are made as direct-fit replacements for a number of Kubota part numbers and popular aftermarket equivalents. Sold as a pack of three, each blade is cut to the diagonal length from tip to tip and finished with a 1 1/8" center mounting hole to fit mowers that use 1 1/8" spindle shafts. Because manufacturers sometimes change blade lengths and center-hole diameters over time, confirm fitment by checking your machine's owner or parts manual or measuring your existing blade before ordering.

Will these blades fit my Kubota mower?

They are designed to replace Kubota part numbers 70000-25004 and 76529-34330 and several aftermarket equivalents. Fitment depends on your deck size and spindle shaft diameter, so confirm measurements before purchase.

• Pack contains three blades for a 54" mower deck
• Diagonal blade length: 18 11/16" (cutting tip to cutting tip)
• Center mounting hole: 1 1/8" inner diameter to match 1 1/8" spindles
• Replaces: KUBOTA 70000-25004, 76529-34330, OREGON 91-436, STENS 330-542, SUNBELT B1SB91436, WINDSOR 50-4490

How do I confirm the blades will mount correctly?

Measure the old blade diagonally from tip to tip and check the center hole diameter if you don’t have the original part number. The assembly should match both the 18 11/16" length and 1 1/8" center hole to ensure proper seating on the spindle.

• Remove one blade and measure edge-to-edge across the diagonal
• Use calipers to measure the inside diameter of the center hole
• Compare measurements to the blade specs before installation
• Refer to your mower’s owner/parts manual for the recommended part number

What performance should I expect after installing these blades?

When properly installed and balanced, these blades restore cutting width and geometry for a uniform cut across the 54" deck. They are blank replacement blades meant for standard mowing; for specialized tasks like mulching or bagging, verify compatibility with your deck and attachments.

• Restores intended cutting width for 54" decks
• Sharp, straight edges reduce scalping when balanced correctly
• Pack of three ensures full-deck replacement at once
• Use standard blade bolts and torque to manufacturer specs

Are there any installation tips or cautions?

Always follow safe procedures: disconnect the spark plug, wear gloves, and use the correct tools and torque settings. Replacing all deck blades as a set keeps blade balance consistent and reduces vibration.

• Disconnect spark plug before working under the deck
• Rotate blades so cutting edges face the correct mowing direction
• Tighten blade bolts to your mower manufacturer’s torque specification
• Check blade balance and sharpen as needed for best results

Who this is for: Lawn care professionals and owners of compatible Kubota walk-behind or zero-turn mowers with 54" decks and 1 1/8" spindle shafts who need a reliable three-blade replacement. This product suits anyone who prefers buying a full deck set at once to maintain even cutting performance and reduce vibration. If you’re unsure about fitment, measure your existing blades or consult your equipment manual before ordering to ensure a correct match.