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Parameter

Description:

Parameter

Series: rubber rings-rolling bearings(SRM¡Á¡Á¡ÁG)

Description:

Characteristic of bearing structure:

 1. S.U.GSRM¡Á¡Á¡ÁG   series tricone bit use Precise metal face sealed. The two dynamic axial sealing rings of the sealing system are metal seals, and two highly elastic rubber energizers are seated separately in head and cone sealing areas functioning as static seals. Optimized sealing compression ensures good contact between the two metal sealing faces at all times.

2. Sizes of bearing journal and rollers are made larger by arranging the rollers in recesses in cone body.

4. New type of wear resistant grease that can sustain high temperature up to 250¡ãC is utilized.

5. Shirttail and head OD are hardfaced for enhanced gage protection. Center nozzle is equipped for bits of larger sizes.

Characteristic ofPredominance technology

S.U.G SRM ¡Á¡Á¡ÁG series tricone bit is metal face sealed roller bearing bit. Using metal face seal (MFS)--the most advanced sealing technology in the world, this series of bit can perform consistently in drilling applications where high RPM and medium to low WOB are required, and is the ideal tool for downhole motor drilling and high speed rotary drilling applications.

S.U.G available sizes and types of SRM ¡Á¡Á¡ÁG series tri-cone bits£º

Bit size

Bit type

API Regular Pin
£¨in£©

Recommended make-up torque for bit shank£¨KN.m£©

Inch
(in)

Metric
(mm)

12 1/4

311.2

    SRM415G¡¢  SRM435G

6 5/8

37.9¡«43.3

Note: Bit sizes (from 8¡åto 17-1/2¡å) and types that are not shown in above table can be customized cording to specific

drilling requirements. For insert bit, special T and S features and optional features H, Y, L, G and C can be added. For

steel tooth bit, optional features T, L, G and C can be added to the bit

S.U.G aecommended operating parameters of RM ¡Á¡Á¡ÁG series roller cone bits

Bit type

Normal OB
kN/mm
£¨bit dia.£©

Rotary Speed£¨rpm£©

Cutting structure

Applicable formation

SRM415

0.20¡«0.60

350¡«80

Large dia. offset crested scoop compacts in inner row, wedge compacts in outer row, and inequable spaced compacts arrangement

Very soft with very low compressive strength, such as shale, clay, sandstone and soft limestone, etc.

SRM435

0.20¡«0.70

350¡«80

Large dia. offset crested scoop compacts in inner row, wedge compacts in outer row

Soft with low compressive strength, such as shale, clay, sandstone, soft limestone, salt bed and hard gypsolyte, etc.