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Locknut

Approximate

Torque

Clamping Force

(ft-lb)

(lb)

10-20 10-20 10-20 10-20 12-35

1,620-3,240 1,340-2,680 1,070-2,140 940-1,880 950-2,770

23-50 32-60 39-70 50-80 64-90

1,450-3,170 1,690-3,170 1,750-3,140 1,970-3,140 2,220-3,120

67-100 82-125 99-150 131-175 152-200

2,090-3,120 2,330-3,540 2,560-3,880 3,130-4,190 3,360-4,430

173-250 197-275 222-325 248-375 277-425

3,610-5,220 3,840-5,350 4,060-5,940 4,280-6,480 4,520-6,950

345-475 380-550 380-550 380-550 380-550

5,360-7,380 5,620-8,120 5,340-7,740 4,900-7,080 4,510-6,540

380-550 380-550 380-550

4,190-6,070 3,910-5,660 3,680-5,330

ENGINEERING

Locknut Torque

Locknut torques are standardized regardless of the type of locknut used. Acceptable locknut torques for dry thread engagement are shown in the following table. Bearing locknuts shall be tightened using a torque wrench and a two-point locknut wrench or other suitable torque wrench adapter.

Reference MIL-B-17931F

140 150 160

100 105 110 120 130

75 80 85 90 95

50 55 60 65 70

25 30 35 40 45

Bearing Bore (mm)

10 12 15 17 20

E22

102800

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