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A-gradeglassdrillbits,1/2GASshank,self-sharpen,drilling

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A-gradeglassdrillbits,1/2GASshank,self-sharpen,drilling

004-2

MODEL: ZR-004

A-grade glass drill bits, 1/2 GAS shank, self-sharpen, drilling more than 10,000pcs holes, length 75mm,85mm or 95mm
The previous: MODEL: ZR-004SS
Next: MODEL: ZR-003SS

MODEL: ZR-004

DIAMETER: 4mm-100mm

Length: L75,L85,L95

A-grade glass drill bits, 1/2 GAS shank, self-sharpen, drilling more than 10,000pcs holes, length 75mm,85mm or 95mm

Instructions of A type glass drill bit

(suit to model ZR-003/ZR-004/ZR-003SS/ZR-004SS)

1. Advantages: sharp and durable, shelf-sharpen,small chipping, high efficiency and so on. It is the best choice for household appliances glass, electronic glass, shower room glass, and architectural glass.

2. Using parameters

Drill diameter (mm)

Glass thickness (mm)

Feeding speed (mm/s)

Glass thickness (mm)

Feeding speed (mm/s)

Optimal Rotating Speed(rpm)

4-8

3-5mm

0.8-1.5mm

5-19mm

1.2-2

3800-4500

9-30

3-5mm

0.8-1.5mm

5-19mm

1.2-2.5

3800-4200

31-50

3-5mm

0.8-1.5mm

5-19mm

1-2

3500-3800

51-70

3-5mm

0.8-1.2mm

5-19mm

1-1.5

3000-3200

71-100

3-5mm

0.8-1.0mm

5-19mm

1-1.2

2800-3000

Remarks: drill bits diameter≥70mm,the minimum speed must be not less than 2800rpm)

3. This type drills must ensure sufficient pressure of the internal cooling water during use, if possible pls add external water spray. The cooling water’s pressure determines the cooling effect when the diamond segment drill the glass at high speed and whether the chip removal smoothly, which will directly affect the service life and sharpness of the drill bit. Correct use of this drill bit: each bit can drill glass depth of 50m-70m, 10mm glass can drill more than 15000 holes;

4. This drill is self-sharpen. Please do not feed more than 1.5mm per second in the first 100 holes in use. After 100 holes, it can be gradually accelerated. In order to achieve the best effect in the use of the drill bit, Please use it correctly, thank you for your cooperation!

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