RUKO SPB-DIN345 37.0mm HSS-E Morse Taper Drill Bit

The RUKO SPB-DIN345 37.0mm HSS-E twist drill bit is built for demanding drilling in high-alloy steels, stainless steel, cast iron, non-ferrous metals, and plastics. Its Morse taper shank (MK4) ensures a secure, self-locking fit in machine spindles, eliminating slippage under heavy loads. The fully ground HSS-E (cobalt alloyed high-speed steel) body provides high heat resistance and wear resistance, while the bright surface finish reduces chip adhesion. With a 130° point angle and conical point grind (Form A), this bit centers accurately and cuts efficiently. The h8 tolerance on the diameter guarantees precise hole sizing.

Highlights

• Morse taper shank MK4 for positive drive and quick tool changes
• HSS-E with cobalt for high heat resistance and long tool life
• Fully ground from solid for superior accuracy and surface quality
• Bright finish reduces friction and improves chip flow
• Conical point (Form A) with 130° point angle for easy centering
• Diameter tolerance h8 for consistent hole dimensions

In daily use

This drill bit excels in machine shops and maintenance operations where large holes must be produced in tough materials. The Morse taper shank transmits high torque without slipping, while the robust core and two flutes provide stable chip evacuation. The 205 mm cutting length allows deep hole drilling, and the 375 mm overall length fits most radial drills and machining centers. For best results, use with appropriate cutting fluid and recommended speeds for the workpiece material.

Full specifications

• Drill bit type: Twist drill bit
• Material: HSS-E (High-Speed Steel with Cobalt)
• Standard: DIN 345
• Diameter: 37.0 mm
• Morse taper size: MK4
• Total length (l1): 375 mm
• Cutting length (l2): 205 mm
• Point angle: 130°
• Shank type: Morse taper shank
• Surface finish: Bright
• Manufacturing process: Fully ground
• Tolerance: h8
• Direction of cut: Right-hand
• Number of flutes: 2
• Point grind: Conical point (Form A)
• Recommended application: High-alloy steels, stainless steel, cast iron, non-ferrous metals, plastics
• Core thickness: Standard
• Heat resistance: High

Final note

RUKO SPB-DIN345 37.0mm HSS-E Morse taper drill bit – precision and durability for large-diameter drilling in demanding materials.