Kalmar DRF420-60S5, Maintenance Manual

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UDRF01.04GB
Maintenance manual DRF 400–450
10 F Technical data – Technical data
page –
Tightening torques,
recommendations
The tightening torques in the following table are recommendations
when tightening bolts and nuts.
When torquing using a machine, for example, bolt runner, the tight-
ening torque should be reduced by approx. 5%.
For mild surfaces (hardness below 200 HB), washer shall be used
under both bolt head and nut. Alternatively, use flange bolt or flange
nut.
Tighten to the prescribed torque without stopping.
Recommended tightening torque may vary depending on surface
treatment. Certain combinations of nut and bolt require lubrication
according to the table below.
State Bolt Nut Lubrication
1 untreated untreated oil
2 bright-galvanized untreated or bright-galvanized dry or oil
3 hot-galvanized untreated dry or oil
Quality 8.8 10.9 12.9
State 1 2 3 1 1
Fine M-thread
M81 27 Nm 24 Nm 30 Nm 39 Nm 46 Nm
M101,25 54 Nm 48 Nm 61 Nm 78 Nm 91 Nm
M121,25 96 Nm 85 Nm 108 Nm 135 Nm 162 Nm
M161.5 230 Nm 205 Nm 260 Nm 323 Nm 388 Nm
M181.5 330 Nm 294 Nm 373 Nm 466 Nm 559 Nm
M-thread
M4 3.2 Nm 2.9 Nm 3.6 Nm 4.6 Nm 5.5 Nm
M5 6.4 Nm 5.7 Nm 7.2 Nm 9.1 Nm 11 Nm
M6 11 Nm 9.8 Nm 12.5 Nm 16 Nm 19 Nm
M8 26 Nm 24 Nm 30 Nm 38 Nm 45 Nm
M10 52 Nm 47 Nm 59 Nm 74 Nm 89 Nm
M12 91 Nm 81 Nm 103 Nm 128 Nm 154 Nm
M16 220 Nm 198 Nm 250 Nm 313 Nm 375 Nm
M20 430 Nm 386 Nm 490 Nm 620 Nm 732 Nm
M24 750 Nm 668 Nm 848 Nm 1050 Nm 1270 Nm
M30 1480 Nm 1317 Nm 1672 Nm 2080 Nm 2500 Nm
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