Roller Cone Mining Bit

Product Name: Roller Cone Mining Bit
Model Number: 9 7/8 K832
Place of Origin: China

The strength and  (http://maplered.com)  wear resistance of inserts are improved by using carbide inserts
with high strength and  (http://maplered.com)  high wear resistance.Surface of the high precision bearing
heat treated by using advanced heat treatment process to improve the load capacity
and  (http://maplered.com)  service life of the bearing.The service life of the bearing is further
extended by adopting harder and  (http://maplered.com)  more wear resistant Material  (http://g654.org)  for thrust bearing.Preventing
reflux structure has dual function, it can avoid air Counter  (http://GialloFiorito.com) flow and  (http://maplered.com) 
dust entering into bearing when the air-compressor stop working accidentally; and  (http://maplered.com) 
separate air and  (http://maplered.com)  water in order to avoid water entering into bearing when it
works normally to prolong the life of bearing.

Uses and  (http://maplered.com)  Applicable Ranges of the Bit:
Uses: The bit is used for air drilling, e.g., for drilling operations in open coal
mine, iron mine and  (http://maplered.com)  non-ferrous mine.
Applicable ranges: The bit is applicable for drilling hard and  (http://maplered.com)  very hard formations
with high compressive strength and  (http://maplered.com)  high abrasiveness, such as magnetite quartzite,
quartzite, Granite  (http://tanbrown.org) , hard sand  (http://maplered.com) Stone  (http://g603.net) , dolomite, chert and  (http://maplered.com)  ironStone  (http://g603.net) , etc.
Basic Specifications of the Bit:  

Weight on bit (WOB):                350,00 - 70,000lbs 
Rotary speed:                       90 - 65RPM
Basic Specifications of the Bit:
IADC code:                        8-3-2
Rock Bit Diameter:                  9 7/8 inches (about 250mm)
Type of the bearing:                 roller-ball-roller-thrust button
Cutting structure:
      Top row and  (http://maplered.com)  inner rows:        ovoid compacts
      Heel row:                    ovoid compacts 
Operating Recommendations:
Shank:                        6 5/8" REG (API) 
Weight:                        59 kg