Special junk mill with combined cutting structure
The special junk mill special end mill with combined cutting structure is designed for milling metal debris, packer plugs, hydraulic fracturing (frac) ports, and cement sheaths during coiled-tubing–assisted workover and well intervention operations in oil, gas, and geological exploration wells.
Characteristics:
Designation
28SJM-56
28SJM-57
28SJM-68
28SJM-70
28SJM-85
28SJM-86
28SJM-95
OD, mm
56
57
68
70
85
86
95
Length, mm
455
455
455
455
515
515
515
Thickness of working surface, mm
15
15
15
15
15
15
15
Rotary speed, rpm, max
175
175
175
175
175
175
175
Axial load, kN
5...20
5...20
5...20
5...20
5...20
5...20
5...20
Thread*
Z-45
Z-45
Z-45
Z-45
Z-65
Z-66
Z-66
Weight, kg
6,5
6,6
8,9
9,1
18,3
18,6
20,1
