Rasp Bar for New Holland Harvester

A rasp bar is a key component in the threshing drum of a New Holland harvester, responsible for separating grains from the crop by rubbing it against the concave. Made from high-strength steel with a hardened surface, it ensures efficient threshing, minimal grain damage, and long-lasting performance in tough harvesting conditions.

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Description

Manufacturing Process

  1. Material Selection – High-carbon steel or alloy steel is chosen for strength and wear resistance.
  2. Cutting & Shaping – Steel bars are cut and formed into the required rasp bar shape.
  3. Teeth Formation – Teeth or ridges are either cast, milled, or welded onto the bar for effective threshing.
  4. Heat Treatment – Hardening and tempering enhance durability and resistance to wear.
  5. Surface Coating – Protective coatings (e.g., powder coating, zinc plating) prevent corrosion.
  6. Quality Testing – The bars undergo hardness tests, wear resistance checks, and dimensional inspections before final use.

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