Spiral Type HSS-G Drill Bits for Metal

Specifications

In compliance with DIN338, made of high-speed steel, fully polished, with cylindrical shank, running at right-side rotation with the sharpening angle of 118°.

Advantages

• prompt removal of swarf and cuttings
• high resilience
• high wear-resistance
• longer service life
• high heat resistance with no loss of its mechanical properties
• good cutting characteristics
• can be reconditioned

Application area

• the drill bits with a sharpened angle of 118° of multi-purpose applications are perfect for drilling in soft and medium-hard metals
• drilling of relatively deep holes
• accepted by all types of power drills and drill presses

Recommendations for operation

• the drill bit hardness must be greater than that of the material to be drilled
• the best way is to start drilling at a low speed and gradually increase it in the process
• we recommend to cool the drill bit using oil or fluid coolant
• use a shorter drill bit, if applicable
• we recommend using lower speeds for the hard materials and higher speeds - for softer materials

Notes

Recommendations for reconditioning
The process of resharpening consists in grinding off the worn-out part of the drill bit and sharpening the drill's cutting edge. The best way for reconditioning is to use a special drill bit sharpening machine.
After the reconditioning, the drill bit must be symmetrical, smooth and free from chippings, burrs and burnings, and the proper value of cutting edge angle must be maintained.

Packing

Compact plastic case with a latch