Reddi-Arm Operator’s Manual
Page 51
Mandako Agri Marketing (2010) Ltd.
7.3 HYDRAULIC FITTING TORQUE
Tightening Flare Type Tube Fittings*
1. Check flare and flare seat for
defects that might cause
leakage.
2.
Align tube with fitting before
tightening.
3. Lubricate connection and hand
tighten swivel nut until snug.
4.
To prevent twisting the tube(s),
use two wrenches on the
connector body and with the
second tighten the swivel nut
to the torque shown.
•
The torque values shown are
based on lubricated
connections as in reassembly.
Pipe Rigid - Tapered Pipe Threads (NPTF, N/NF) - Carbon Steel
Pipe Size
Turns-from-finger
Max ft-lbs
Max N-m
1/8” (-2)
3/4 - 1 3/4
12
16
1/4” (-4)
3/4 - 1 3/4
25
34
3/8” (-6)
3/4 - 1 3/4
40
54
1/2” (-8)
1/2 - 1 1/2
54
73
3/4” (-12)
1/2 - 1 1/2
78
106
1” (-16)
1/2 - 1 1/2
112
152
1 1/4” (-20)
1/2 - 1 1/2
154
209
1 1/2” (-24)
1/2 - 1 1/2
211
286
2” (-32)
1/2 - 1 1/2
300
407
For reference only, Source: Air-Way Manufacturing Co. - Carbon Steel Hydraulic
Stud End O-Ring Boss (ORB) SAE (U/UF)
Carbon Steel
Tube Size
Thread UNF-2A
Max ft-lbs
Max N-m
-2
5/16” - 24
6-7
8-9
-3
3/8” - 24
8-9
11-12
-4
7/16” - 20
13-15
18-20
-5
1/2” - 20
17-19
23-26
-6
9/16” - 18
22-24
29-33
-8
3/4” - 16
40-43
49-53
-10
7/8” - 14
43-48
59-64
-12
1 1/16” - 12
68-75
93-102
-14
1 3/16” - 12
90-99
122-134
-16
1 5/16” - 12
112-123
151-166
-20
1 5/8” - 12
146-161
198-218
-24
1 7/8” - 12
154-170
209-231
For reference only, Source: Air-Way Manufacturing Co. - Carbon Steel Hydraulic
O-Ring Face Seal Fitting (ORFS) (F/FF)
Tube Size
Turns-from-finger
Torque ft-lbs
Torque N-m
-4
9/16 - 18
10-12
14-16
-6
11/16 - 18
18-20
24-27
-8
13/16 - 16
32-35
43-47
-10
1 - 14
46-50
60-68
-12
1 3/16 - 12
65-70
90-95
-16
1 7/16 - 12
92-100
125-135
-20
1 11/16 - 12
125-140
170-190
-24
2 - 12
150-165
200-225
For reference only, Source: Air-Way Manufacturing Co. - Carbon Steel Hydraulic
