Metal Drill Bit EPA EN-SM4.0

EPA EN-SM4.0 – a spiral drill bit for metal with a cylindrical shank, designed for drilling holes in structural steels, cast iron, non-ferrous metals (aluminum, copper, brass), as well as plastic and wood. Made from high-quality high-speed steel (HSS), ensuring high strength, wear resistance, and durability. Suitable for use in hand drills and stationary machines. The drill has a standard length and a sharpening angle of 118°, making it versatile for both household and professional tasks.

Features

• Type: Metal drill bit, spiral, with cylindrical shank.
• Diameter: 4.0 mm.
• Material: High-speed steel (HSS, analog to R6M5).
• Overall length: ~75 mm (standard series, exact length may vary).
• Working length: ~43 mm (exact length depends on the model).
• Sharpening angle: 118°.
• Precision class: A1 (ground) or B (rolled, depending on batch).
• Hardness: 60–62 HRC.
• Application: Drilling holes in steels with strength up to 900 MPa, cast iron, non-ferrous metals, plastic, and wood.
• Standards: Compliant with GOST 10902-77, DIN 338.
• Features:
  • Spiral design for efficient chip removal.
  • High wear resistance and heat resistance.
  • Suitable for both household and professional tasks.
  • Not designed for drilling hardened steels or materials with high hardness.

Advantages

• Versatility: suitable for metals, plastic, and wood.
• High strength and durability due to HSS steel.
• Efficient chip removal thanks to spiral design.
• Affordable price with good quality for household and semi-professional use.
• Compatibility with most drills and machines due to cylindrical shank.

Application

• Drilling holes in structural steels, cast iron, aluminum, copper, brass.
• Working with plastic and wooden materials.
• Use in construction, repair, furniture production, automotive repair.
• Limitations:
  • Not suitable for drilling stainless steel or hardened materials (HSS-Co cobalt drills are recommended).
  • Do not use without cooling during intensive work (coolant is recommended).
  • Avoid excessive pressure to prevent overheating or breakage.

Instructions for use

1. Check the condition of the drill: ensure there are no damages or dullness.
2. Secure the drill in the drill or machine chuck, ensuring reliable fixation.
3. Set the appropriate rotational speed: for steel – 1500–2000 rpm, for aluminum – higher (up to 3000 rpm).
4. Clean the material surface of dirt and rust.
5. When drilling metal, use a lubricant-cooling liquid (oil, emulsion) to extend the drill’s service life.
6. Drill with moderate pressure, avoiding overheating.
7. After use, clean the drill from chips and store in a dry place