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Product Details:
Payment & Shipping Terms:
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| Bearing Type: | Sealed Friction Bearing With Gauge Protection | Cutting Material: | TCI |
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| Standard: | API-7-1, ISO 9001:2008 | Series: | FA |
| IADC: | 517 | Supplementary Features: | G : Reinforced Gauge Protection |
| Application 1: | Water Well Drilling | Application 2: | Shallow Oil Well Drilling |
| High Light: | FA517G Tricone Rock Bit,12 1/4" hdd drill bits,Water Well Drilling Tricone Rock Bit |
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12 1/4" FA517G, Tricone Rock Bit, Water Well Drilling Bit , Medium Hard Formation , IADC 517
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
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Types & IADC Code |
417 |
437 447 |
517 527 |
517 527 |
537 547 |
617 627 |
637
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WOB |
KN/mm(Bit Dia.) |
0.4~0.9 |
0.4~0.9 |
0.35~1.0 |
0.35~1.0 |
0.5~1.0 |
0.6~1.1 |
0.7~1.2 |
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Lb/in. (Bit Dia.) |
2285~5142 |
2285~5142 |
2000~5714 |
2000~5714 |
2857~5714 |
3428~6285 |
4000~6857 |
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Rotation Speed (Rpm) |
140~60 |
240~70 |
125~50 |
~60 |
110~50 |
100~40 |
80~4 |
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Bearings
- Functions:
• Support radial load
• Support thrust or axial loads
• Secure the cone on the leg
- Supporting loads is achieved by outer and nose bearing
- Ball and friction bearings secure the cone on the leg
- Two different bearing are available: antifriction and friction
- Antifriction bearings or roller are two types: Roller-ball-roller (RBR), and roller-ball-friction
- RBR, nose roller; intermediate ball; and outer roller
- The ball secure the cone
- Size influenced by journal angle and cone size
- RBR suffers from spalling of the races of the pin
- RBR bit have short life than Friction Bearing Bit
- Normally used with bit with diameter greater than 12.25 in with adequate space and in situation where high rotary speed is required
Contact Person: Jade
Tel: 0086-10-63405086
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