Komatsu 930E-4, Руководство по эксплуатации и техническому обслуживанию

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STANDARD TIGHTENING TORQUES
STANDARD CHARTS AND TABLES
SAE Grade 5 And Grade 8 Capscrews
The following specifications apply to required
assembly torques for all grade 5 and grade 8
capscrews.
NOTE: Capscrew threads and seats shall be
lubricated when assembled. Unless instructions
specifically recommend otherwise, these standard
torque values are to be used with simple lithium base
chassis grease (multi-purpose EP NLGI) or a rust-
preventive grease (see list, previous page) on the
threads.
NOTE: Torques are calculated to give a clamping
force of approximately 75% of proof load. The
maximum torque tolerance shall be within ±10% of
the torque value shown.
In the following table under Capscrew Size, the first
number represents the shank diameter (in.).
The
second number represents threads per inch.
Example: 7/16 - 20
7/16 = shank diameter (7/16 inch (0.438 inch))
20 = threads per inch
Table 2-2
Standard Tightening Torque for SAE Hex
Head Capscrew And Nut Assembly
Cap-
screw
Size
Torque
Grade 5
Torque
Grade 8
N·m ft·lb kg·m N·m ft·lb kg·m
1/4-20 9.5 7 0.97 13.6 10 1.38
1/4-28 10.8 8 1.11 14.9 11 1.52
5/16-18 20.3 15 2.07 28 21 2.90
5/16-24 22 16 2.21 30 22 3.04
3/8-16 34 25 3.46 47 35 4.84
3/8-24 41 30 4.15 54 40 5.5
7/16-14 54 40
5.5
79 58 8.0
7/16-20 61 45 6.2 84 62 8.57
1/2-13 88 65 9 122 90 12.4
1/2-20 95 70 9.7 129 95 13.1
9/16-12 122 90 12.4 169 125 17.3
Standard Tightening Torque for SAE Hex
Head Capscrew And Nut Assembly
Cap-
screw
Size
Torque
Grade 5
Torque
Grade 8
N·m ft·lb kg·m N·m ft·lb kg·m
9/16-18 129 95 13.1 183 135 18.7
5/8-11 169 125 17.3 237 175 24.2
5/8-18 183 135 18.7 258 190 26.2
3/4-10 298 220 30.4 420 310 42.8
3/4-16 319 235 32.5 454 335 46.3
7/8-9 475 350 48.4 678 500 69.2
7/8-14 508 375 51.9 719 530 73.3
1.0-8 712 525 72.6 1017 750 103.7
1.0-12 759 560 77.4 1071 790 109.3
1.0-14 773 570 78.8 1085 800 110.6
1 1/8-7 881 650 89.9 1424 1050 145
1 1/8-12 949 700 96.8 1546 1140 158
1 1/4-7
1234 910 125.9 2007 1480 205
1 1/4-12 1322 975 134.8 2142 1580 219
1 3/8-6 1627 1200 166 2630 1940 268
1 3/8-12 1776 1310 181 2874 2120 293
1 1/2-6 2142 1580 219 3471 2560 354
1 1/2-12 2305 1700 235 3756 2770 383
2-4 930E-4