Efco DS Series User Manual

BRUSCHCUTTERS DS 2200 - DS 2400
pag. 11
Workshop manual
3. FASTENER TORQUES
3.2 Imperial inch Fastener Torque Values
Grade 1 Grade 2b Grade 5, 5.1 or 5.2 Grade 8 or 8.2
Lubricated a Dry a Lubricated a Dry a Lubricated a Dry a Lubricated a Dry a
SIZE N●m lb-ft N●m lb-ft N●m lb-ft N●m lb-ft N●m lb-ft N●m lb-ft N●m lb-ft N●m lb-ft
1/4 3.7 2.8 4.7 3.5 6 4.5 7.5 5.5 9.5 7 12 9 13.5 10 17 12.5
5/16 7.7 5.5 10 7 12 9 15 11 20 15 25 18 28 21 35 26
3/8 14 10 17 13 22 16 27 20 35 26 44 33 50 36 63 46
7/16 22 16 28 20 35 26 44 32 55 41 70 52 80 58 100 75
1/2 33 25 42 31 53 39 67 50 85 63 110 80 120 90 150 115
9/16 48 36 60 45 75 56 95 70 125 90 155 115 175 130 225 160
5/8 67 50 85 62 105 78 135 100 170 125 215 160 215 160 300 225
3/4 120 87 150 110 190 140 240 175 300 225 375 280 425 310 550 400
7/8 190 140 240 175 190 140 240 175 490 360 625 450 700 500 875 650
1 290 210 360 270 290 210 360 270 725 540 925 675 1050 750 1300 975
1-1/8 470 300 510 375 470 300 510 375 900 675 1150 850 1450 1075 1850 1350
1-1/4 570 425 725 530 570 425 725 530 1300 950 1650 1200 2050 1500 2600 1950
1-3/8 750 550 950 700 750 550 950 700 1700 1250 2150 1550 2700 2000 3400 2550
1-1/2 1000 725 1250 925 990 725 1250 930 2250 1650 2850 2100 3600 2650 4550 3350
DO NOT use these hand torque values if a different
torque value or tightening procedure is given for
a specic application. Torque values listed are for
general use only and include a ±10% variance
factor. Check tightness of fasteners periodically.
DO NOT use air powered wrenches.
Shear bo lts are de signed to fa il u nder
predetermined loads. Always replace shear bolts
with identical grade.
Fasteners should be replaced with the same
grade. Make sure fastener threads are clean and
that you properly start thread engagement. This
will prevent them from failing when tightening.
When bolt and nut combination fasteners are
used, torque values should be applied to the NUT
instead of the bolt head.
Tighten toothed or serrated-type lock nuts to the
full torque value.
“Lubricated” means coated with a lubricant
such as engine oil, or fasteners with phosphate
and oil coatings.
“Dry” means plain or zinc plated without any
lubrication.
“Grade 2” applies for hex cap screws (Not Hex
Bolts) up to 152 mm (6 in.) long. “Grade 1”
applies for hex cap screws over 152 mm (6
in.) long, and for all other types of bolts and
screws of any length.
a.
b.

Efco DS Series Specifications

General

Brand	Efco
Model	DS Series
Category	Brush Cutter
Language	English