Spearhead 9561210, Handbook

Page: 38 / 46

8999070: v3 03/09/2018
Page 6.10 of 6.10 pages Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
6.14 Torque settings
6.14.1 General torque settings
CAUTION!
This table refers to bolts without a torque setting specified above. Please check the “Specific
Torque
Settings” Section 6.14.2. Where a specific torque setting is given it should be used instead of the
information below.
The figures shown are for the torque moment for bolts of normal metric thread quality 8.8 black and/or galvanised and
ungreased when tightened on a smooth surface or a plain washer.
Thread Diameter (mm) Nm + 10% - 0
5 6
6 10
8 26
10 52
12 90
14 144
16 225
20 436
22 594
6.14.2 Specific torque settings
CAUTION! This table refers to bolts that MUST be tightened to the figure shown. Where a specific torque
setting
is given it should be used instead of the information shown in the “General Torque Settings”; Section
6.14.1.
Fastener Torque Setting (Nm)
P.T.O. shaft shear bolt 26
Outer gearbox mounting
bolts
225
Central gearbox
mounting bolts
90
Flexible coupling bolts 90
Blade carrier bolts 225
Cutting blade bolts 225
Rotor hub castle nut(s) Refer to Section 6.9