Round HSS Machine Reamer, 40 mm

Product Details

An HSS (High-Speed Steel) Machine Reamer is a cutting tool used in machining operations to finish holes with a high degree of precision and accuracy. Unlike drills, which are primarily used for creating holes, reamers are specifically designed to refine and enlarge existing holes to tight tolerances. HSS machine reamers are made from high-speed steel, a material known for its durability, heat resistance, and ability to maintain sharpness even at high cutting speeds. Key Features of HSS Machine Reamers: Material: High-Speed Steel (HSS): HSS is a highly durable material that allows the reamer to withstand high cutting temperatures and maintain its cutting performance. HSS reamers are ideal for general-purpose machining tasks where cost-effectiveness and performance are required. Cutting Edges: The cutting edges of the HSS machine reamer are typically ground to a precise geometry to achieve a smooth finish and accurate hole size. Reamers are designed with multiple cutting edges to evenly distribute the cutting forces, reducing wear and providing a better finish. Taper or Parallel Designs: HSS machine reamers come in tapered or parallel (straight) designs, depending on the application. Tapered reamers are used for enlarging holes with a slight taper. Parallel reamers maintain a consistent diameter throughout the length of the tool and are commonly used for finishing precise, straight holes. Helix Angle and Flute Design: The flute design and the helix angle (spiral of the cutting edges) of the reamer are optimized to provide effective chip removal and reduce friction during operation. This ensures smooth operation and reduces the risk of tool binding or excessive wear. Diameter Tolerance: Reamers are typically used to achieve precise diameter tolerances that drills cannot provide. An HSS reamer can be used to enlarge a hole to a specific size with an accuracy of a few microns. Coatings: While uncoated HSS reamers are commonly used for general purposes, some reamers are coated with materials like TiN (Titanium Nitride) or TiCN (Titanium Carbonitride) to enhance wear resistance, reduce friction, and extend tool life, especially when machining tough materials. Types of HSS Machine Reamers: Straight Flute Reamers: Purpose: These reamers have straight flutes and are designed for general-purpose reaming. They are typically used for through-holes or when the hole depth is shallow. Applications: Straight flute reamers are ideal for use in ferrous and non-ferrous materials, and they are commonly used in industries like automotive, aerospace, and toolmaking. Spiral Flute Reamers: Purpose: Spiral flute reamers have a helical cutting edge designed to carry chips out of the hole more efficiently. They are ideal for blind holes (holes that do not go all the way through the material) where chip removal can be challenging. Applications: Commonly used for aluminum, brass, and soft steels where chip removal is crucial for efficiency. Adjustable Reamers