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Tricone Bits
26in IADC115(660.4mm)
IADC:115
ID:WFN660.4
Design Specifications
 O-ring sealed journal bearing Journal bearing structure with head bearing hardfaced and cone bearing silver plated to improve load capacity and anti-galling ability of the bearing. More wear and high-temperature resistant highly s
 Cutting structure Hardfaced gage and tooth surfaces.
 Hardfacing on shirttail This feature can provide better protection for seal and bearing to extend the bit’s service life.
Technical specifications
IADC Code: 115
Weight: 742 KG
Package: 71×72×94 cm
Operating Parameters
Recommended operating parameters:
Bit Pressure: 0.5 ~ 0.85 KN
Rotary Speed: 70 ~ 120 r/min
Pumping Pressure: 10 ~ 22 Mpa
Sediment Concentration: < 0.5%

The above parameters are only for reference. Optimized parameters are determined by drilling process and lithology of formations on site.


tricone bit nozzle and assembled size       

Bit  diameterNozzle outer diameterassembled lengthNozzle exit diameter (inner diameter)
in   mm mmmmmm
3 1/2~5 1/288.9~139.720.317.54~10
5 5/8~7 3/8142.9~187.323.619.05~16
7 1/2~8 1/4190.5~209.629.821.07~18
8 3/8~14 5/8212.7~371.533.027.08~20
≥14 3/4≥374.640.927.010~22
Note: the assembled lenght is length from nozzle inlet to retaining ring groove

Download PDF :
26in IADC115(660.4mm)

Applicable formations:

Very soft: such as soft marl, clay, salt, etc.

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