Product Description
Model 300 Drilling diameter 300 (mm)
Dimensions 300 (mm)
This series of drilling tools are universal rock reaming tools for non-excavation and crossing construction industries. Our company produces various types of cone reamers.
Suitable for all types of non-excavation and crossing rigs, suitable for various strata. The size covers 300-2000mm.
According to the characteristics of the rig and the different formations, the most suitable tooth profile and bearing structure are selected.
Hydraulic rock breaking. Smooth slag discharge, reducing slag accumulation.
The welding process is guaranteed to prevent overheating of the welding.
The tri-cone bit is a high-reliability bit suitable for vertical and directional wells.This series of bits, while inheriting the superior bearing quality of the conventional hj series bits, adjusts the cutting structure, alloy tooth material and steel tooth welding material, which improves the bit adaptation Capabilities of various complex formations.
Its structural characteristics:
1. The bearing adopts high-precision radial sliding and two thrust bearings; the surface of the palm bearing is hard-coated with hard alloy layer, and the roller bearing is inlaid with silver-plated anti-friction alloy, which improves the bearing capacity and anti-seizure capacity.
2. Use high-precision metal seals. The metal seal consists of a pair of carefully designed and processed metal seal rings as the axial dynamic seal of the bearing. Two highly elastic rubber energy supply rings are located in the palm and roller seal areas as static seals. The optimized seal compression ensures two The metal ring seal surfaces are in good contact at all times.
3. The steel ball locks the roller to adapt to high speed.
4. The all-rubber oil storage bag that can limit the pressure difference and prevent drilling fluid from entering the lubrication system provides a good lubrication guarantee for the bearing system.
5. New type of grease that can withstand high temperature of 250 ° c and wear resistance.
6. The insert bit adopts high-strength, high-toughness cemented carbide teeth, and the optimized design of the number of rows, the number of teeth, the height of the exposed teeth and the unique alloy tooth profile fully utilizes the high wear resistance and excellent cutting ability of the insert . A new type of wear-resistant material is applied to the tooth surface of the steel tooth bit to maintain the high mechanical drilling speed of the steel tooth bit while improving the cutting tooth life of the bit.
Applicable formations for steel tooth drills:
Soft formation with low compressive strength and high drillability
2. Medium to medium hard formations with high compressive strength
3. Semi-abrasive and abrasive hard formations
4. Extremely hard formation with low compressive strength and high drillability
Applicable formations for tooth bit:
1. Soft to medium formations with low compressive strength
2. Medium-hard formation with high compressive strength
3. Semi-abrasive and abrasive hard formations
4. Highly abrasive extremely hard formation
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