Hunan New Diamond Construction Machinery Co., Ltd.
|Place of Origin:||Hunan, China (Mainland)|
|Brand Name:||New Diamond|
|Model Number:||6 1/4" 412 159mm Tricone drill Bits|
|Minimum Order Quantity:||Negotiable|
|Packaging Details:||Carton packaging and wooden box packing|
|Delivery Time:||5-8 work days|
|Payment Terms:||L/C, T/T, Western Union|
|Supply Ability:||According to order quantity|
|IADC Code:||412||Circulation Type:||Jet Air|
|Pin Connection:||3 1/2” API||Metric Bit Diameter:||159mm|
|Product Weight:||20KG||Weight On Bit:||6,250-12,500Ibs|
milled tooth drill bit,
roller cone drill bit
· Carefully check the bits appearance and to check the bits threaded end face,whether the serial number on the box and certificate.
· Selection of WOB and RPM should be within the limits of the recommended parameters, higher WOB and RPM cannot be used simultaneously.
· Drilling process must operate smoothly, find that there is Bie jump on abnormal phenomenon, should be timely analysis and take effective measures
· The bit should be kept indoor with dry and well ventilated conditions at 10-33℃ and kept from sunshine and rain. Stored under such conditions, quality of bit is guaranteed for 3 years.
|Bit Diameter||IADC||Applications||Special Features(Cutting Structure,Lug Protection)||Weight||PIN Conn||Operating Suggestions WOB/RPM|
|6 1/4” 159mm||412||Very soft formations with low compressive strengths and high drillability.||Chisel on gage,conical on inner rows;Hardmetal on lug;Wear resistant carbide on shirttail lip and lug.||44||20||3 1/2” API||6,250-12,500Ibs/120-90RPM|
Based on the calculating of the load distribution on the bearing components,all shareate bits incorporate bearings that have optimal geometry and load distribution designed to give maximum bearing life.
1. Non-Sealed Bearings
Bearing Type:Roller-Ball-Roller-Thrust Button without seal.
2. Sealed Bearings
Bearing Type:O-Ring Seal-Roller-Ball-Roller-Thrust Button. See
·The seal keeps the mud,cuttings,air and water ouside the bearings.
·The bearing works in lubricant and friction conditions,this results in less bearing wear and longer bearing life.
Contact Person: Rick.liao