Hard-Surfaced Blade RH, large drum

Where does this product go and how is it installed?

Knives are mounted to the drum rotors can spin either clockwise or counter clockwise. Always install tungsten carbide up 

What is this product used for?

Used for cutting off the forage being harvested near the bottom of the stalk. The fingers of the gathering drums then feed it into the throat of the forage harvester. 

When to replace this product?

Blades should be replaced when there is no tungsten carbide hard surface left, or the rotor if out of balance. 

For milled aggressive cutting knives see KK129957 and KK129956 for better cutting in wet and weedy conditions. 

Hard-Surfaced Blades with Tungsten Carbide Edge:

• Advanced Coating Technology:
  • These blades feature a hard-facing coating coupled with a wear-sharp surface.
  • The hard-faced side boasts exceptional durability, prolonging the blade's lifespan.
• Self-Sharpening Advantage:
  • Uniquely designed to wear asymmetrically—the back side wears faster than the hard-faced side.
  • As it wears, the backside gradually forms a sharp edge, effectively self-sharpening during use.
• Tungsten Carbide Enhancement:
  • Embedded with tungsten hard-facing for added resilience and longevity.
  • This tungsten edge ensures consistent sharpness, enhancing cutting efficiency.
• High Popularity:
  • Widely acclaimed and highly sought-after due to its self-sharpening feature and extended lifespan.

These hard-surfaced blades epitomize innovation, utilizing advanced coating technology and a self-sharpening mechanism. The combination of hard-facing and tungsten enhancements ensures prolonged durability and consistent cutting performance, making them a popular choice among users seeking longevity and self-maintenance in their replacement blades.

• To fit Kemper™ 3000 - 4-row, 445, 4500, JD® 676 6-row, (large drum only)
• To fit John Deere® 678, 778 & 460 large drum rotary heads
• JD® 770 SN before 125396
• JD® 770+ SN after 125397
• 8 required per drum
• Drum turns clockwise

Why Kooima Ag?
Kooima Ag has been manufacturing high-quality replacement agricultural products since 1989. With years of experience, we are committed to providing durable, dependable parts at cost savings to our customers.