hole opener

Hole Opener is made of tough heat treated alloy steel for maximum strength. Cutter arms, equipped with removable cutter, are hard faced and welded on body. Cutters are available in three types: type SM for soft to medium formation, type MH for medium to hard formation and type XH for hard formation. The hole openers have three or six jet tubes with replaceable nozzles, so that jet streams quickly clean the enlarged hole.
Material: AISI 4145H
Type: fixed diameter
Cutter type: SM MH XH
Length: 50"~90"
Hole size range: 12-1/4" 17-1/2" 26" 36"
Connection Thread: IF FH REG

Hole Size (in)	No. of Cutter	Pilot Hole Size (in)	Fishing Neck Length (in)	Fishing Neck Dia (in)	Top Conn.	Bore (in)	Overall Length (in)
17 1/2	3	10 1/2	18	9 1/2	7 5/8 Reg.	2 1/4	59
26	3	17 1/2	18	10	7 5/8 Reg.	3	69
36	3	24	20	9	7 5/8 Reg.	3	75
36	4	28	43	10	7 5/8 Reg.		100

• 
• 
•