Junk mill bit (JMB)
The junk mill bit is designed for milling cement and sand plugs, casing components, packer plugs, and other downhole metal debris. Use of hybrid cutting structure significantly enhances operational performance and broadens the tool’s range of applications.
Characteristics:
Designation
JBM-83
JBM-85
JBM-95
External diameter, mm
83
85
95
Length, mm
223
223
223
Number of watercourses
3
3
3
Thickness of the working surface, mm
20
20
20
Rotation frequency,no more, rpm
200
200
200
Axial load, kN
5...20
5...20
5...20
Thread*
Z-65
Z-65
Z-65
Mass, kg
6,1
6,2
7,0
