1. Elastomer (Rubber) Sealed Roller Bearing Bit | |
Cutting Structure | The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit. |
Gauge Structure | Multiple gauge protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life. |
Sealed Bearing Structure | 1.Abrasion resistance and seizure resistance of the bearing are improved. |
Main Type Available | Size: 5 7/8",6",6 1/2",7 1/2", 7 7/8",8 1/2",9 1/2", 9 5/8",9 7/8",12 1/4",13 5/8",14 3/4",15",15 1/2",17 1/2",22",24",26", etc. |
2. Air Cooling Roller Bearing Steel Tooth Bit | |
Cutting Structure | The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit. |
Gauge Structure | Gauge protection with gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability. |
Sealed Bearing Structure | Air cooling roller bearing package. Balls lock the cone which reduces the probability of cone-dropping to minimum. |
Main Type Available | Size:5 7/8",6",6 1/2",7 1/2", 7 7/8",8 1/2",9 1/2", 9 5/8",9 7/8",12 1/4",14 3/4",17 1/2", etc. |
3. Non-Sealed Roller Bearing Steel Tooth Bit | |
Cutting Structure | The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces. |
Sealed Bearing Structure | Non-sealed roller bearing. Drilling fluid can enter the bearing directly for cooling; Balls lock the cone which reduces the probability of cone Cdropping to minimum. |
Main Type Available | Size: 2 3/8",3",3 5/8:",3 7/8",4",4 1/2",4 5/8",4 3/4",6",6 1/2",7 1/2", 7 7/8",8 1/2",9 1/2", 9 5/8",9 7/8",10 5/8",12 1/4", 17 1/2",etc. |
Specifications
Specifications 1>Meet with API Spec7-1 &ISO 9001:2008 2>Good quality and after-sale service 3>30 years experience in it.
Steel tooth rock bit Main structure features
1. Journal bearing. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. The load capacity and seizure resistance of the bearing is greatly improved.
2. Bits is made of the more wear resistance high saturated buna-N with the increased seal section and precisely designed sealing flange in the cone sealing area increased the reliability of the seal.
3. The bit bearing can be ball locked or ring locked. Bit with ring lock bearing can stand high weight on bit and bit with ball lock bearing can be applied to high rotary speed drilling.
4. All rubber compensator is used which can limit pressure differential and prevent drilling fluid from entering the lubrication system and this provides the bearing system with good assurance of lubrication.
5. New type of grease that can sustain high temperature up to 250°C is utilized.
6. High wear resistance and excellent cutting ability of the insert bit are given full play by using carbide compacts of high strength and high toughness in combination with optimized compact numbers and rows, the exposure height and special shaped compacts. For steel tooth bit, the tooth surface is hardfaced with new type of wear resistant material and thus extended working life of the cutting structure while still maintaining high ROP.
Product predominance
