RITEWAY ROCK PICKER 250, Operator'S Manual & Parts

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18
ROCK PICKER 250
Torque Chart
Nominal
Thread Size
Grade 2 Grade 5 Grade 8
Clamping
Load
Tightening
Torque
Clamping
Load
Tightening
Torque
Clamping
Load
Tightening
Torque
Coarse Thread
1/4 - 20 1,300 lbs 65 in - lbs 2,000 lbs 100 in - lbs 2,850 lbs 143 in - lbs
5/16 - 18 2,150 lbs 134 in - lbs 3,350 lbs 210 in - lbs 4,700 lbs 305 in - lbs
3/8 - 16 3,200 lbs 20 ft - lbs 4,950 lbs 31 ft - lbs 6,950 lbs 44 ft - lbs
7/16 - 14 4,400 lbs 30 ft - lbs 6,800 lbs 50 ft - lbs 9,600 lbs 70 ft - lbs
1/2 - 13 5,850 lbs 49 ft - lbs 9,050 lbs 75 ft - lbs 12,800 lbs 107 ft - lbs
9/16 - 12 7,500 lbs 70 ft - lbs 11,600 lbs 109 ft - lbs 16,400 lbs 154 ft - lbs
5/8 - 11 9,300 lbs 97 ft - lbs 14,500 lbs 151 ft - lbs 20,300 lbs 211 ft - lbs
3/4 - 10 13,800 lbs 173 ft - lbs 21,300 lbs 266 ft - lbs 30,100 lbs 376 ft - lbs
7/8 - 9 11,425 lbs 166 ft - lbs 29,435 lbs 430 ft - lbs 41,550 lbs 606 ft - lbs
1 - 8 15,000 lbs 250 ft - lbs 38,600 lbs 640 ft - lbs 54,540 lbs 900 ft - lbs
Fine Thread
1/4 - 28 1,500 lbs 75 in - lbs 2,300 lbs 115 in - lbs 3,250 lbs 163 in - lbs
5/16 - 24 2,400 lbs 150 in - lbs 3,700 lbs 230 in - lbs 5,200 lbs 325 in - lbs
3/8 - 24 3,600 lbs 23 ft - lbs 5,600 lbs 35 ft - lbs 7,900 lbs 50 ft - lbs
7/16 - 20 4,900 lbs 36 ft - lbs 7,550 lbs 55 ft - lbs 10,700 lbs 78 ft - lbs
1/2 - 20 6,600 lbs 55 ft - lbs 10,200 lbs 85 ft - lbs 14,400 lbs 120 ft - lbs
9/16 - 18 8,400 lbs 79 ft - lbs 13,000 lbs 112 ft - lbs 18,300 lbs 172 ft - lbs
5/8 - 18 10,600 lbs 110 ft - lbs 16,300 lbs 170 ft - lbs 23,000 lbs 240 ft - lbs
3/4 - 16 15,400 lbs 193 ft - lbs 23,800 lbs 298 ft - lbs 33,600 lbs 420 ft - lbs
7/8 - 14 12,610 lbs 184 ft - lbs 32,480 lbs 473 ft - lbs 45,855 lbs 668 ft - lbs
Torque Chart