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8 1/2'' Replaceable Single Roller Cone Bit for Rotary Drilling Rigs

high quality
Availability:
Quantity:

8 1/2'' IADC 637 Replaceable Type

Features:

Bigger cone ,TCI covers full cones, longer working life

Shirttail hard enhanced by Tungsten Carbide

Journal sealed bearing with TCI protection on heel of cones

14mm conical-ball TCI

Drilling for  hard  rock hardness more than 100MPa, bigger diameter  Inserts brings higher wear resistance and lower inserts breakage rate.

_MG_3060-1_副本

Size

8 1/2''

6A1A6221 6A1A6223

IADC Code:

6-3-7

Bearing:

Journal bearing

Sealing:

O-ring

Cutting structure:

Conical

Rows/Qty:

6/48 7/52  

Shirttail/Lug

Welding carbide &

adding inserts



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Hejian Hengji Bit Manufacture Co.,LTD  is specialized in researching and production of rock drilling bits , mainly includes tricone bits, PDC bits, HDD hole opener, foundation single roller cutters, drag bits and related tools with advanced CNC machines and R&D team.

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Junziguan industrial zone, hejian city, hebei province
+86-317 3213999
+86-18232837832
+86-18232837832
+86-18232837832
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