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Disc Blades

Whether it’s smooth disc blades to churn up loose dirt or aggressive notched blades to tear through heavy wet soils and thick crop residues, Wiese has your disc harrow needs covered. By listening to our farmers, customers, and friends for nearly a century we produce the greatest disc harrow blades on the market. The blades are carefully engineered to easily and cleanly break up the top layer to create an ideal bed for planting and mitigating erosion risks. By using only materials of the highest grades these blades are built to keep an edge and hold their profiles in even the most unyielding ground.

Standard Concavity Disc Blades

Name Thickness Diameter Gauge Concavity
Plain Disc Blade 14″ x 0.118″ 0.118” (3mm) 14” 11 1.50”
Plain Disc Blade 16″ x 0.118″ 0.118” (3mm) 16” 11 1.50”
Plain Disc Blade 18″ x 0.128″ 0.128” (3.25mm) 18” 10 1.75”
Plain Disc Blade 18″ x 0.157″ 0.157” (4mm) 18” 8 1.75”
Plain Disc Blade 20″ x 0.138″ 0.138” (3.5mm) 20” 9 2”
Plain Disc Blade 20″ x 0.177″ 0.177″ (4.5mm) 20” 7 2”
Plain Disc Blade 22″ x 0.177″ 0.177” (4.5mm) 22” 7 2.5”
Plain Disc Blade 22″ x 0.236″ 0.236” (6.0mm) 22” 3 2.5”
Plain Disc Blade 24″ x 0.236″ 0.236” (6.0mm) 24” 3 3”
Plain Disc Blade 24″ x 0.312″ 0.315” (5/16”) (8.0mm) 24” N/A 3”
Plain Disc Blade 26″ x 0.236″ 0.236” (6.0mm) 26” 3 3.5”
Plain Disc Blade 26″ x 0.312″ .315″ (5/16”) (8.0mm) 26” N/A 3.5”
Plain Disc Blade 28″ x 0.312″ 0.315” (5/16”) (8.0mm) 28” N/A 4.25”
Plain Disc Blade 32″ x 0.354″ 0.360” (9.0mm) 32” N/A 4.75”
Plain Disc Blade 36″ x 0.472″ 0.472” (12.0mm) 36” N/A 5.125”
Name Thickness Diameter Gauge Concavity
Notched Disc Blade 14″ x 0.118″ 0.118” (3mm) 14” 11 1.50”
Notched Disc Blade 16″ x 0.118″ 0.118” (3mm) 16” 11 1.50”
Notched Disc Blade 18″ x 0.128″ 0.128” (3.25mm) 18” 10 1.75”
Notched Disc Blade 18″ x 0.157″ 0.157” (4mm) 18” 8 1.75”
Notched Disc Blade 20″ x 0.138″ 0.138” (3.5mm) 20” 9 2”
Notched Disc Blade 20″ x 0.177″ 0.177” (4.5mm) 20” 7 2”
Notched Disc Blade 22″ x 0.177″ 0.177” (4.5mm) 22” 7 2.5”
Notched Disc Blade 22″ x 0.236″ 0.236” (6mm) 22” 3 2.5”
Notched Disc Blade 24″ x 0.236″ 0.236″ (6mm) 24” 3 3”
Notched Disc Blade 24″ x 0.312″ 0.315” (5/16”) (8mm) 24” N/A 3”
Notched Disc Blade 26″ x 0.236″ 0.236″ (6mm) 26” 3 3.5”
Notched Disc Blade 26″ x 0.312″ 5/16” (8mm) 26” N/A 3.5”
Notched Disc Blade 28″ x 0.312″ 0.315” (5/16”) (8mm) 28″ N/A 4.25”
Notched Disc Blade 32″ x 0.354″ 0.360″ (9mm) 32” N/A 4.75”
Notched Disc Blade 36″ x 0.472″ 0.472″ (12mm) 36” N/A 5.125”

Flat-center Disc Blades to fit IH

Name Thickness Diameter Gauge Concavity
Plain Flat-Center Disc Blade 18″ x 0.157″ 0.157” (4mm) 18” 8 1.5″
Plain Flat-Center Disc Blade 20″ x 0.177″ 0.177” (4.5mm) 20” 7 2”
Plain Flat-Center Disc Blade 22″ x 0.157″ 0.177” (4.5mm) 22” 7 2.5”
Plain Flat-Center Disc Blade 22″ x 0.236″ 0.236” (6mm) 22” 3 2.5”
Plain Flat-Center Disc Blade 24″ x 0.236″ 0.236” (6mm) 24” 3 3”
Plain Flat-Center Disc Blade 26″ x 0.236″ 0.236” (6mm) 26” 3 3.5”
Name Thickness Diameter Gauge Concavity
Notched Flat-Center Disc Blade 18″ x 0.157″ 0.157” (4mm) 18” 8 1.5”
Notched Flat-Center Disc Blade 20″ x 0.177″ 0.177” (4.5mm) 20” 7 2”
Notched Flat-Center Disc Blade 22″ x 0.177″ 0.177” (4.5mm) 22” 7 2.5”
Notched Flat-Center Disc Blade 22″ x 0.236″ 0.236” (6mm) 22” 3 2.5”
Notched Flat-Center Disc Blade 24″ x 0.236″ 0.236” (6mm) 24” 3 2.5”
Notched Flat-Center Disc Blade 26″ x 0.236″ 0.236” (6mm) 26” 3 2.5”

Deep-cone Disc Blades to fit John Deere

Name Thickness Diameter Gauge Concavity
Plain Flat-Center Disc Blade 18″ x 0.157″ 0.157” (4mm) 18” 8 1.5″
Plain Flat-Center Disc Blade 20″ x 0.177″ 0.177” (4.5mm) 20” 7 2”
Plain Flat-Center Disc Blade 22″ x 0.157″ 0.177” (4.5mm) 22” 7 2.5”
Plain Flat-Center Disc Blade 22″ x 0.236″ 0.236” (6mm) 22” 3 2.5”
Plain Flat-Center Disc Blade 24″ x 0.236″ 0.236” (6mm) 24” 3 3”
Plain Flat-Center Disc Blade 26″ x 0.236″ 0.236” (6mm) 26” 3 3.5”
Name Thickness Diameter Gauge Concavity
Notched Flat-Center Disc Blade 18″ x 0.157″ 0.157” (4mm) 18” 8 1.5”
Notched Flat-Center Disc Blade 20″ x 0.177″ 0.177” (4.5mm) 20” 7 2”
Notched Flat-Center Disc Blade 22″ x 0.177″ 0.177” (4.5mm) 22” 7 2.5”
Notched Flat-Center Disc Blade 22″ x 0.236″ 0.236” (6mm) 22” 3 2.5”
Notched Flat-Center Disc Blade 24″ x 0.236″ 0.236” (6mm) 24” 3 2.5”
Notched Flat-Center Disc Blade 26″ x 0.236″ 0.236” (6mm) 26” 3 2.5”

Special Concavity Disc Blades to fit Miller

Name Thickness Diameter Gauge Concavity
Plain Miller Front Hub Disc Blade 24″ x 0.236″ 0.236” (6mm) 24” 3 2.625”
Plain Miller Front Hub Disc Blade 26″ x 0.236″ 0.236” (6mm) 26” 3 3.00”
Name Thickness Diameter Gauge Concavity
Notched Miller Front Hub Disc Blade 24″ x 0.236″ 0.236” (6mm) 24” 3 2.625”
Notched Miller Front Hub Disc Blade 26″ x 0.236″ 0.236” (6mm) 26” 3 3.00”
Notched Miller Rear Hub Disc Blade 24″ x 0.236″ 0.236” (6mm) 24” 3 3.75”
Notched Miller Rear Hub Disc Blade 26″ x 0.236″ 0.236” (6mm) 26” 3 4.00”

Center Holes for Disc Blades

Name To Fit Axle or Arbor Size Dual or Single Punch
114S 1-1/4″ square Single
112S 1-1/2″ square Single
118R 1-1/8″ round Single
112R 1-1/2″ round Single
134R 1-3/4″ round Single
2R 2″ round Single
781 7/8″ square or 1″ round Dual
1118 1″ square or 1-1/8″ square Dual
1814 1-1/8″ square or 1-1/4″ square Dual
HEX 1″ hexagon Single