8 1/2" Rock Cutter Roller Cone Single Bit

• Customization: Available
• Customized: Customized
• Standard: AISI, API
• Model NO.: 8.5
• Type: Center Drill Bit
• Material: High Carbon Steel
• Usage: Well Drilling
• Machine Type: Drilling Tool
• Processing Type: Forging
• Advantage: High-Efficiency ,Wear Resistant
• Bearing Type: Journal /Roller Bearing Bit
• Transport Package: Wooden Case
• Specification: 8.5"
• Trademark: LONGYUE
• Origin: Hebei, China
• HS Code: 8207199000
• Production Capacity: 200 Pieces/Week
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 15.000kg
• Lead Time: 10 days (1 - 1000 Pieces) ; To be negotiated ( > 1000 Pieces)

Product Description

 

Product Description

8 1/2  IADC637 Roller Cones for Piling/Drum

 

Basial Specification
IADC Code	117,127,126,217 417,437,517,537 617,627,637,737
Bit Size	7 1/2'',8 1/2'' 9 7/8'',12 1/4''
Tooth Type	wide teeth,chisel insert
Bit Weight	18kg
Meterial	tungsten carbide insert,inlaid friction-reducing alloy
Bearing	Metal sealed bearing Rubber sealed bearing
Lubrication and seal	Adopt advanced grease
Pressure control system	The advanced compensator
Thrust faces	Hardfaced with wear resistant alloy
Nozzles	Three nozles,Center nozzle can be customized
Gauge protection	On the Shirttail:More carbide inserts increase gauge holding capability and bearing life

 

Recommended Drilling Parameters
IADC	WOB(kn/mm)	RPM(r/min)	Formations
117	0.30-0.753	180-60	very soft formation with low compressive strenght and high drillability,such as caly,mudstone,chalk,etc.
127	0.30-0.85	180-60	soft formation with low compressive strength and high drillability,such as mudstone,gypsum,soft limestone,etc.
217	0.35-0.95	150-60	soft to medium hard formations with high compressive strength,such as medium soft shale,sandstone,limestone,etc.
437	0.35-0.9	240-70	soft formation with low compressive strenght and high drillability,such as caly,mudstone,chalk,soft limestone,etc.
517	0.35-1.0	140-60	medium soft formation with low compressive strength and high drillability,such as mudstone,sandstone,shale,etc.
537	0.45-1.0	120-50	medium soft to medium hard formation with low compressive strength,such as medium shale,sandstone,medium limestone,etc.
617	0.45-1.1	90-50	medium hard to hard formation witj high compressive strength,such as hard shale,limestone,dolomite,etc.
637	0.5-1.2	80-40	hard to very hard formation with high compressive strength,such as hard limestone,dolomite,marble,etc.
NOTE the upper limits of WOB and RPM in above table should not be used simultaneously

 

Countries that our company have already exported:United States, Australia, Costa Rica, Guatemala, Azerbaijan, Congo, Myanmar, Peru, Singapore, Oman, Indonesia, Philippines, India, Switzerland, Ukraine, Turkey, Bolivia, Romania, Kenya, Vietnam, South Africa, Kuwait, Mozambique, Ecuador, France.

Exhibition
Certificates

 

Packaging & Shipping

FAQ
1. How to get an exact quotation?
Answer: Please send us detailed information as below:
-Tricone bits(Diameter, IADC code)
-PDC bits(Matrix or Steel body, blades quantity, cutter size, etc)
-Hole opener(Diameter, size of pilot hole, hardness of rocks, thread connection of your drill pipe, etc.)
-Roller cutters(Diameter of cones, model number, etc.)

A simple way is sending us photos .
Besides above, if possible please provide more information as below:
Drilling depth in vertical well drilling, Drilling length in HDD, hardness of rocks, Capacity of drill rigs, application(oil/gas well drilling, or water well drilling, or HDD, or foundation).
Incoterm: FOB or CIF or CFR, by plane or ship, port of destination/discharge.
The more information provided, the more exact quotation will be offered.

2. About lead time,payment terms, delivery ?
Answer: We always have regular models available in stock, prompt delivery is one of our advantages. Mass production depends on quantity of order.
We accept all regular payment terms including L/C, T/T, etc.
We are near from Beijing airport and Tianjin(Xingang) seaport, transportation from our factory to Beijing or Tianjin only takes one day, fast and very economical inland charges.