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John Deere Blade Comparison

John Deere Blade Comparison

Application-specific design

Comparison is of John Deere blades against comparable competitive blades (blades not manufactured by John Deere, but sold to fit the same equipment).

Stake Test Results

Blade Comparisons
Features  John Deere Rotary Blade Competitive blade
Size of center hole: Perfectly sized to spindle alignment boss. Center hole too large leads to moderate blade and deck vibration.
Location of center hole:  Hole is located in exact center of blade. Mislocated center holes leads to serious vibration and blade-to-blade contact.
Flatness of blade/spindle contact area: Blade remains flat while tightening blade bolt. As blade is tightened, ends do not remain flat and blades become misaligned.
Material and Heat Treatment Combines carbon with boron and other materials to provide hardenability for long life without brittleness. Some competitive companies sell hardness only, compromising safety with brittle blades. Others don't control the material or heat-treating process, resulting in blades that are too soft and wear quickly or are too hard and brittle.
                             Rigorous Testing
Fatigue Test: Blades shaken over 6 million cycles to simulate abusive environment.  
Stake Test: Blade approaches 200 mph, then encounters 1-inch steel rod. Blade must BEND, not fragment (see results above). Aftermarket blade fragments in stake test. (See results above)
Field Test: All new blades are tested at field test sites in Wisconsin and Florida for wear and longevity.  

Kings, IL
12223 East Route 64
Rochelle, IL 61068
Rockford, IL
854 Simpson Rd
Rockford, IL 61102
(815) 489-0700
Sycamore, IL
8680 State Route 64
Sycamore, IL 60178
(815) 899-3580