8 1/2 Inch Three Roller Tricone Drill Bit for Hard Rock Drilling - API Standard Connections
Price:
Negotiate
MOQ:
1 pcs
Delivery Time:
Negotiable
Brand:
ROSCHEN
Product Description
Three Roller Tricone Drill Bit Overview
The 8 1/2 inch tricone drill bit is engineered for hard rock drilling applications in oil, gas, and geological exploration. Its performance directly impacts drilling quality, efficiency, and operational costs.
Available Sizes
Comprehensive size range from 3 7/8" (98mm) to 26" (660mm), including standard 8 1/2" (216mm) configuration.
Operating Principles
Under weight pressure and drill string rotation, the bit's teeth crush and penetrate rock while generating shear forces. This dual-action mechanism efficiently breaks rock formations through impact crushing and cutting action.
Technical Specifications
Classification Types
- Bearing Type: Rolling and plain bearings
- Sealing Type: Rubber seal and metal seal
- Tooth Type: Indentation (carbide teeth) and milling gear (steel teeth)
Standard Connection Sizes
| Bit Size Range | Standard Pin Connection |
|---|---|
| 2 1/2" to 2 3/4" | A - AW Rod |
| 2 7/8" to 3 3/8" | N4 Rod |
| 3 1/2" to 4 1/2" | 2 3/8" API |
| 4 5/8" to 5" | 2 7/8" API |
| 5 1/8" to 7 3/8" | 3 1/2" API |
| 7 1/2" to 9 3/8" | 4 1/2" API |
| 9 1/2" to 14 3/8" | 6 5/8" API |
| 14 1/2" to 18 1/2" | 6 5/8" API or 7 5/8" API |
| 18 5/8" to 26" | 7 5/8" API or 8 5/8" API |
| 27" and larger | 8 5/8" API |
Key Features & Advantages
- Wide adaptability to soft, medium, and hard geological formations
- High penetration rates with optimized cutting efficiency
- Advanced bearing systems with floating elements for enhanced durability
- High-precision metal seals for reliable performance under pressure
- Temperature-resistant grease capable of withstanding 250°C
- Carbide teeth with superior wear resistance and cutting capability
Operational Guidelines
- Maintain clean mud systems to prevent nozzle clogging
- Control drilling speed to avoid sudden resistance changes
- Regularly inspect and maintain pump systems
- Monitor and adjust drilling parameters based on formation conditions
- Apply gradual pressure increases during initial drilling phases
Contact Information
ROSCHEN INC.
Skype: ROSCHEN.TOOL, ROSCHEN_GROUP
WeChat: +86-137 6419 5009; +86-135 8585 5390
WhatsApp: +86-137 6419 5009; +86-135 8585 5390
Email: roschen@roschen.com; roschen@roschen.net
Website: www.roschen.com; www.roschen.net
Keywords: tricone roller bit, rock drilling equipment, oil drill bits, water well drilling, roller cone bits
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
ROSCHEN GROUP
Location
65 EAST XINHUAN ROAD, SHANGHAI, CHINA
Contact Person
Bill, George, Michael