tricone bit
1. size from 6 to 12 1/4 inch
2.long service life, high reliability
3.drilling in hard formations and high abr
JSSWT Steel tooth bit with high efficiency
SWT series steel tooth bit with high efficiency can solve these problems ,with strong wear resistant teeth and fast ROP,bit can work more stably, which is more suitable for drilling in soft or middle soft formations with high rotary speed..
The size range of SWT series bit is from 8 1/2 to 17 1/2 inch ,and IADC varies from 117 to 127
.for example:9 1/2 SWT 127.
Bit size | API regular pin | Recommended make up torque | |
Inch | Mm | Inch | KN·M |
3 3/4 | 95.3 | 2 3/8 | 4.1~4.7 |
3 7/8 | 98.4 | 2 3/8 | 4.1~4.7 |
4 1/8 | 104.8 | 2 3/8 | 4.1~4.7 |
4 1/4 | 108.0 | 2 3/8 | 4.1~4.7 |
4 1/2 | 114.3 | 2 3/8 | 4.1~4.7 |
4 5/8 | 117.5 | 2 7/8 | 6.1~7.5 |
4 3/4 | 120.7 | 2 7/8 | 6.1~7.5 |
5 1/2 | 139.7 | 3 1/2 | 6.1~7.5 |
5 5/8 | 142.9 | 3 1/2 | 9.5~12.2 |
5 2/3 | 143.9 | 3 1/2 | 9.5~12.2 |
5 3/4 | 146.1 | 3 1/2 | 9.5~12.2 |
5 7/8 | 149.2 | 3 1/2 | 9.5~12.2 |
6 | 152.4 | 3 1/2 | 9.5~12.2 |
6 1/8 | 155.6 | 3 1/2 | 9.5~12.2 |
6 1/4 | 158.8 | 3 1/2 | 9.5~12.2 |
6 5/8 | 168.3 | 3 1/2 | 9.5~12.2 |
6 3/4 | 171.5 | 3 1/2 | 9.5~12.2 |
7 1/2 | 190.5 | 3 1/2 | 9.5~12.2 |
7 5/8 | 193.7 | 4 1/2 | 16.3~21.7 |
7 7/8 | 200.0 | 4 1/2 | 16.3~21.7 |
8 3/8 | 212.7 | 4 1/2 | 16.3~21.7 |
8 1/2 | 215.9 | 4 1/2 | 16.3~21.7 |
8 5/8 | 219.1 | 4 1/2 | 16.3~21.7 |
8 3/4 | 222.3 | 4 1/2 | 16.3~21.7 |
9 1/2 | 241.3 | 6 5/8 | 38~43.4 |
9 5/8 | 244.5 | 6 5/8 | 38~43.4 |
9 7/8 | 250.8 | 6 5/8 | 38~43.4 |
10 1/2 | 266.5 | 6 5/8 | 38~43.4 |
10 5/8 | 269.9 | 6 5/8 | 38~43.4 |
11 | 279.4 | 6 5/8 | 38~43.4 |
11 5/8 | 295.3 | 6 5/8 | 38~43.4 |
12 | 304.8 | 6 5/8 | 38~43.4 |
12 1/4 | 311.7 | 6 5/8 | 38~43.4 |
12 5/16 | 312.7 | 6 5/8 | 38~43.4 |
12 3/8 | 314.3 | 6 5/8 | 38~43.4 |
12 7/16 | 315.9 | 6 5/8 | 38~43.4 |
12 5/8 | 320.7 | 6 5/8 | 38~43.4 |
13 1/2 | 342.9 | 6 5/8 | 38~43.4 |
13 5/8 | 346.1 | 6 5/8 | 38~43.4 |
13 3/4 | 349.3 | 6 5/8 | 38~43.4 |
14 1/2 | 368.3 | 7 5/8 | 46.1~54.2 |
14 3/4 | 374.7 | 7 5/8 | 46.1~54.2 |
15 1/2 | 393.7 | 7 5/8 | 46.1~54.2 |
16 | 406.4 | 7 5/8 | 46.1~54.2 |
17 1/2 | 444.5 | 7 5/8 | 46.1~54.2 |
18 7/8 | 479.4 | 7 5/8 | 46.1~54.2 |
20 | 508.0 | 7 5/8 | 46.1~54.2 |
22 | 558.8 | 7 5/8 | 46.1~54.2 |
24 | 609.6 | 7 5/8 | 46.1~54.2 |
26 | 660.4 | 7 5/8 | 46.1~54.2 |
36 | 900 | 6 5/8 | 46.1~54.2 |
API RLLER CONE BIT TOLERANCES
API roller cone bit tolerances
Out side diameter of bit | O.Dtolerances | |
Inch | Inch | Mm |
3 3/8~13 3/4 | 0~0.0313(1/32) | 0~0.79 |
14 ~ 17 1/2 | 0~0.0625(1/16) | 0~1.57 |
17 5/8~26 | 0~0.0938(3 /32 | 0~2.38 |
