Betalent twist drill bits are manufactured by Walter 5-axil grinding machine base on submicron grain size tungsten carbide rods, which enable the edge very sharp and a high wear-resistance. In terms of design, the 118 ° double back angle design ensures the accurate positioning of the bit at the start of the drilling, which convenient the drilling, and the U-shaped groove chip removal design ensures smooth chip removal. Lots of standard twist drill bits (left-hand and right-hand) and straight shank drills (left-hand and right-hand) are stored in Betalent carbide warehouse, ready to ship, irregular size or special design carbide twist drill bits can be customized.
d=D Cutting dia.(mm) | Lc Cutting length(mm) | L Overall length (mm) |
0.80-1.00 | 12 | 50 |
1.05-1.50 | 14 | 50 |
1.55-5.00 | 18 | 50 |
2.05-2.50 | 20 | 50 |
2.55-3.00 | 25 | 50 |
3.05-4.00 | 25 | 50 |
4.05-4.50 | 25 | 50 |
4.55-5.00 | 25 | 50 |
5.05-6.00 | 25 | 50 |
6.05-6.50 | 30 | 60 |
6.55-7.00 | 30 | 60 |
7.05-7.50 | 40 | 75/80 |
7.55-8.00 | 40 | 75/80 |
8.05-8.50 | 40 | 75/80 |
8.55-9.00 | 40 | 75/80 |
9.05-9.50 | 40 | 75/80 |
9.55-10.00 | 40 | 75/80 |
10.05-10.50 | 45 | 100 |
10.55-11.00 | 45 | 100 |
11.05-11.50 | 50 | 100 |
11.55-12.00 | 50 | 100 |
Remark:
1. Tolerance of d is within 0.005mm.Standard size in stock, ready to ship.
2. Accept customize.
3. Tip angle 118°，d tolerance within 0.005mm
d=D Cutting dia.(mm) | Lc Cutting length(mm) | L Overall length (mm) |
1.05-1.55 | 10 | 30 |
1.60-2.00 | 15 | 40 |
2.05-2.50 | 18 | 40 |
2.55-3.00 | 18 | 40 |
3.05-3.50 | 22 | 40 |
3.55-4.00 | 25 | 50 |
4.05-5.00 | 25 | 50 |
5.05-5.50 | 25 | 50 |
5.55-6.00 | 25 | 50 |
6.05-6.50 | 28 | 60 |
6.55-7.00 | 28 | 60 |
Remark:
1. Tolerance of d is within 0.005mm.Standard size in stock, ready to ship.
2. Accept customize.
3. Tip angle 118°，d tolerance within 0.005mm
Xiamen Betalent Carbide Co., Ltd is a professional twist drill manufacturers, we provide tungsten carbide cutter, twist fluted drill, twist drills for sale, weldon shank twist drill bits, precision twist drill set, micro twist drill chuck set, tungsten carbide products, etc. Want to know more? Please contact us.
