2020 Oregon Catalog

Lawn Mower Blades

Common Blade Measurements

Center Hole Dimensions / Diameter

Top View

Length

Width

Outer Hole Dimensions / Diameter

Center to Center

L-Cut: Counterclockwise rotating blade; cutting-edge is on opposite side of blade.

Side View

Thickness

Oset

.030"

Right-End View

30˚

Air Lift

Blade Arbor Hole Types

5 or 7-Point Star Center holes may be 5 or 7-point star shaped.

The two sizes of the 6-point star. If your blade spindle has a bolt and lock washer that holds the blade to the machine, you would use the 11/16" star or “Y” blade

5-Point Star

7-Point Star

Square or Rectangular The MTD built blades on many walk-behind lawn mowers have a “bow-tie” hole. In this case the Oregon replacement blade will have a rectangular center hole which will fit on the bow-tie pat- tern on the blade adapter. Bow-Tie Rectangular Bow-Tie / Rectangular

5-Point Star

7-Point Star

B

If your blade is secured with a large flange nut, then you would use the 5/8" star or “Y” blade

Bow-Tie 5-P int Star

Rectangular 7-Point Star

Bow-Tie / Rectangular

6-Point Star

“Y”Center Hole

6-Point Star “Y”Center Hole

MTD Blades The MTD built blades (Bolens, Cub Cadet, Troy-Bilt, White, Yard Machine and Yardman) may have a 6-point star. Oregon replace- ment blades will have a “Y” shaped center hole which will fit exactly on the 6-point star on the blade spindle.

Bow-Tie

Rectangular

Bow-Tie / Rectangular

6-Point Star

“Y”Center Hole

6-Point Star “Y”Center Hole

6-Point Star

“Y”Center Hole

6-Point Star “Y”Center Hole

LG  353

Lawn Mower Blades

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