Ruko Spiral Drill Bit 11.5 x 142 x 94 mm DIN 338 Article No.: 228115

Ø 11.5 x 142 x 94 mm. This high-performance spiral drill bit has been specially designed for portable use in drills and cordless screwdrivers (best performance for material thickness up to 5.0 mm). The three-flat shank ensures excellent fixation in the chuck with minimal effort. Additionally, the shank allows for optimal power transmission. No slipping of the drill bit!

The 135º high-performance cutting edge provides very high centering accuracy, especially in hand-held applications with the cordless screwdriver. The cutting edge prevents slipping when drilling into curved surfaces.

Increased battery life due to reduced cutting forces. The black chamfer enhances wear resistance and prevents cold welding and buildup of cutting edges. The 40º helix angle allows for perfect and rapid chip removal, ensuring high cutting speeds with increased stability and accuracy.

HSS Co 5: High-performance high-speed steel with 5% cobalt content. High toughness and heat resistance, suitable for drilling in hard-to-machine materials with a strength of up to 1100 N/mm².

• Pointing: Cross-ground according to DIN 1412 C
• Core: normal
• Standard: DIN 338
• Flute profile: wide, for better chip removal
• Surface: gold / black oxidized surface
• Ø Tolerance: h8
• Cutting material: HSSE Co 5
• Cutting direction: right-hand cutting
• Spiral angle: 40°
• Tip grinding: conical mantle grinding
• Tip angle: 135°

Technical Data
Product type: Metal & Steel Drill Bit
Diameter (mm): 11.5
Overall length (mm): 142
Spiral length (mm): 94
Shank: Three-flat shank.