6 1/4 Inch Tricone Roller Bit , Hard Rock Drill Bits Fast Drilling Rate API Standard

IADC537 6-1/4"  tricone bits with "O" ring seal and journal bearing

Product Details

• IADC code: 537
• Bearing type: "O"ring sealed journal bearing
• Circulation type: center flush fluid
• Cutting structure: tungsten carbide inserts
• Gage bevel protection: hard metal
• Lug/shirttail protection: regular/hard metal with inserts
• Pin connection: 3-1/2'' API reg

We took the following factors into consideration when designing

Journal angle determines the overall aggressiveness of the bottom hole profile. Soft formation rock bits employ a 33 degree angle while hard formation rock bits employ a 36 degree angle. Increased rate of penetration (ROP) can be achieved by offsetting the ceter line of the cone away from the center of bit rotation. This produces more on-bottom action. The higher the offset the greater the scraping and gouging action on bottom. Oversize angle controls the diameter of the cone at gage. Soft to medium formation tricones employ a more round cone profile and a larger cone angle. This creates a bottom hole action of gouging and scraping. Hard formation bits employ a smaller cone angle and a flatter cone profile. This creates a bottom hole action of crushing. Oversize angle controls the diameter of the cone at gage. Soft formation tricones employ a higher oversize angle; thus, escalating gage action and cone diameter. Hard formation bits have very little or no oversize angle. This reduces the action on gage and also reaming of gage inserts. Intermesh is the distance the top of a tooth or button bit insert extends into the grooves of adjacent cones. This spacing allows for cleaning of formation and prevents packing. Projection is the height of the button or tooth. Pitch is the space between teeth or inserts.

Hard to Very-Hard Formation

Application : For use in abrasive consolidated formations with compressive strength above 400 Mpa such as taconite, quartzite and banded iron formations

Cutting structure: These bits are characterized by closely spaced conical or spherical inserts with medium to low projection. This configuration promotes good penetration rates in hard, consolidated and very abrasive formations. Smaller carbide inserts are provided on the gage and inner rows or hard metal is deposited in the nose area to contain shell erosion and improve performance.

• Compression Strength: 60,000 – 100,000 psi
• Drilling Speeds: 50 – 90 rpm
• Jet Circulation: All sizes
• Weight on Bit (WOB): 4,000 – 7,500 lbs/in of bit diamete

INTERRELATIONSHIP BETWEEN INSERTS REQUIREMENTS AND THE FORMATION

Advantage:

1. Tianying rock roller bit feature an improved cutting structure, with wear and fracture resistant tungsten carbide inserts, designed to maximize penetration rates.
2. Bearings are refined and strengthened.
3. Rock drilling bits are carefully engineered to maximize productivity and lower total drilling costs.

Main Products We Provide

We mainly provide Tricone Bits(Rock Drilling Bits), DTH Bits and PDC Bits for mining rock drill , water well drilling and oil well drilling.

Don’t see the bit you are looking for? Give us a call, we can customize any bit to fit your unique circumstances.

1). Tricone Bits:

a). Type: Tungsten Carbide Insert (TCI)

b). Formation Application: Soft to Hard Formation

c). Size Available: 3''~26''

d). Popular IADC Code: IADC545,645,725,735,745,825,835

2). DTH Bits:

a). Type: Tungsten Carbide Insert (TCI)

b). Formation Application: Soft to Hard Formation

c). Size Available: 2.8''~26''

d). Popular IADC Code: IADC117/137, 217/237, 317/337, 417/437, 517/537, 617/637

3). PDC Bits:

a). Type: Matrix Body and Steel Body

b). Formation Application: Soft to Hard Formation

c). Size Available: 3 1/2''~26''

d). Popular IADC Code: 121/122/123, 221/223/224, 323/324/332/333/334/343,

423/424/432/433/443