Ruko Twist drill 12.5 x 151 x 101 mm DIN 338

Ruko Spiral Drill Bit 12.5 x 151 x 101 mm DIN 338 Item No.: 228125

Ø 12.5 x 151 x 101 mm. This high-performance spiral drill bit has been specifically designed for portable use in drills and cordless screwdrivers (best performance up to 5.0 mm material thickness). 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 build-up edges. The 40º helix angle enables perfect and rapid chip removal, ensuring high cutting speeds with increased stability and accuracy.

HSS Co 5: High-performance high-speed steel with a 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.

Point geometry: Cross grind 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
Helix angle: 40°
Tip grind: cone-shaped grind
Tip angle: 135°

Technical Data
Product type: Metal & Steel Drill Bit
Diameter (mm): 12.5
Total length (mm): 151
Spiral length (mm): 101
Shank: Three-flat shank.