Bearing Structure

Features of C133 Series

                        Type C133-537                       Type C133-637      Type C133-637(Full covered)

Developed in year 2013, this square arm roller cone bits is almost the first square arm roller cone bits famous in foundation rock piling field in China and the world, it is still in hot selling from year 2013 by its high cost-performance, so we name it "Classical Roller Cone Bits-Generation 1" in piling field.

The first batch for testing in Shenzhen China at year 2013 reached 65 meters depth in drilling 120MPa hardness rocks, high drilling speed and perfect performance makes it popular in China and South-East Asia rapidly and copied by many factories.

One set of classical roller cone bits has Cone 1, Cone 2, Cone 3, they have same shapes, length of Tungsten Carbide inserts(teeth) with bit-thirds (1/3) of Tri-cone bits, the 3 cones works together could get higher penetrating rate and faster drilling down speed to save cost.

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Technical specification of roller cone bit C133

Raw Material
Cone	20CrNiMo
Arm	20CrNiMo
Tooth	Tungsten Carbide Inserts
Tooth Type
Tooth Qty.&Diameter	Cone1: 43PCS / 13mm, Cone2: 45PCS / 13mm, Cone3: 41PCS / 13mm
Tooth Height	Total height: 17mm, inside height: 10.5mm, outside height: 6.5mm
Bearing and Lubrication
Tungsten carbide enhanced on bearing	A Yes   B Yes   C No
Grease Lubrication & Bearing Seal	O-ring Seal. Inject grease NOT by vacuum machine.

Oil/Gas Well Drilling-Water Well Drilling-HDD(Trenchless)-Foundation Piling