Torque - Hydraulic Tubes And Fittings - Norwood Kwik-Till HSD2500 Operator's Manual

Torque – Hydraulic Tubes and Fittings
Standard torque data for hydraulic tubes and fittings
Tubing OD
Size
Inches mm
4 1/4 6.4
5 5/16 7.9
6 3/8 9.5
8 1/2 12.7
10 5/8 15.9
12 3/4 19.1
14 7/8 22.2
16 1 25.4
20 1-1/4 31.8
24 1-1/2 38.1
32 2 50.8
The above torque figures are recommended for plain,
cadmium or zinc plated fittings, dry or wet installations and
swivel nuts either swagged or brazed. These torques are not
recommended for tubes 12.7 mm ( 0.5 in) OD and thicker with
wall thickness of 0.889 mm ( 0.035 in) or less. The torque
is specified for 0.889 mm ( 0.035 in) wall tubes on each
application individually.
Tube Nuts for 37° Flared Fittings
Thread Size
7/16-20
1/2-20
9/16-18
3/4-18
7/8-14
1-1/6-12
1-3/16-12
1-5/16-12
1-5/8-12
1-7/8-12
2-1/2-12
7 - SPECIFICATIONS
ft-lbs Nm
Min Max Min
9 12 12
12 15 16
21 24 29
35 40 47
53 58 72
77 82 104
90 100 122
110 120 149
140 150 190
160 175 217
225 240 305
7-4
O-Ring Boss Plugs, Adjustable
Fitting Lock Nuts, Swivel JIC -
37 ° Seats
ft-lbs
Max Min Max
16 6 10
20 10 15
33 15 20
54 25 30
79 35 40
111 60 70
136 70 80
163 80 90
204 95 115
237 120 140
325 250 300
Nm
Min Max
8 14
14 20
20 27
34 41
47 54
81 95
95 109
108 122
129 156
163 190
339 407