Integral Lifting Sub is a specialized tool for lifting drilling tool during drilling. It is divided into two structures for sloping shoulder and straight shoulder.
Specification of Integral Lifting Sub
|
Norminal size
D±0.08
(1/32
mm(in)
|
I.D
d/mm
|
External Thread
|
Lift End
|
|||||
|
Types of Thread
|
O.D
Dp±0.08
(±1/32)
Mm(in)
|
Bevel
Dia.
Df/mm
|
Length of Action
Lpb/mm
|
O.D
Db±0.08
Mm
|
Corner Radius of Shoulder End
Rse±0.04
Mm
|
Length of Action
Lb/mm
|
||
|
71.0(2 7/8)
|
31.8
|
NC23
|
79.4(3 1/8)
|
76.2
|
250.0
|
111.1
|
4.8
|
100.0
|
|
44.5
|
NC26(2 3/8)
|
88.9(3 1/2)
|
82.9
|
|||||
|
88.9(3 1/2)
|
54.0
|
NC31(2 7/8)
|
104.8(4 1/8)
|
100.4
|
127.0
|
|||
|
50.8
|
NC35
|
120.7(4 3/4)
|
114.7
|
|||||
|
68.3
|
NC38(3 1/2IF)
|
127.0(5)
|
121.0
|
|||||
|
127.0(5)
|
71.4
|
NC44
|
152.4(6)
|
144.5
|
168.3
|
6.4
|
||
|
158.8(6 1/4)
|
149.2
|
|||||||
|
82.6
95.3
|
NC46(4IF)
|
158.8(6 1/4)
|
150.0
|
|||||
|
165.1(6 1/2)
|
154.8
|
|||||||
|
171.5(6 3/4)
|
159.5
|
|||||||
|
NC50(4 1/2IF)
|
177.8(7)
|
164.7
|
||||||
|
184.2(7 1/4)
|
169.5
|
|||||||
|
NC56
|
196.8(7 3/4)
|
185.3
|
300.0
|
|||||
|
203.2(8)
|
190.1
|
|||||||
|
6 5/8REG
|
209.6(3 1/4)
|
195.7
|
||||||
|
NC61
|
228.6(9)
|
212.7
|
||||||
|
7 5/8 REG
|
241.3(9 1/2)
|
223.8
|
||||||
|
NC70
|
247.7(9 3/4)
|
232.6
|
||||||
|
254.0 (10)
|
237.3
|
|||||||
|
NC77
|
279.4(11)
|
260.7
|
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