Technibike E-MTB - Bolted Connections

25
Bolted connections
It is vital that all bolted connections
on the bicycle have the correct
torque in order to ensure that they
are secure. Too much torque can damage
the screw, nut or component. Always use a
torque spanner to tighten screw joints. You
are not able to correctly tighten these bolted
connections without this specialist tool!
If a component species a torque
for its bolted connections, then this
should be strictly adhered to.
Please read the instructions provided by the
manufacturer, which lists the correct mount-
ing torques.
Bolted connection Torque
Crankset arm, steel 30 Nm
Crankset arm, alumin-
ium
40 Nm
Pedals 40 Nm
Front wheel nut 25 Nm
Rear wheel nut 40 Nm
Stem expander bolts 8 Nm
Threadless stem
clamping bolts
9 Nm
Bar-ends – Clamping
bolts on the bars
10 Nm
Bolted connection Torque
Seat post clamping
bolt M8
20 Nm
Seat post clamping
bolt M6
14 Nm
Screw of seat rails to
seat post clamp
20 Nm
Brake blocks 6 Nm
Dynamo attachment 10 Nm
Differences for carbon components:
Bolted connection Torque
Front derailleur bracket
attachment screw
3 Nm*
Shift lever attachment
screw
3 Nm*
Brake lever attachment
screw
3 Nm*
Handlebars - stem
clamping
5 Nm*
Stem - fork tube
clamping
4 Nm*
Bolted
connection
Thread
Torque
Max.
Seat post clamp,
loose
M 5 4 Nm*
Seat post clamp,
loose
M 6 5,5 Nm*
Bolted
connection
Thread
Torque
Max.
Derailleur hanger M 10 x 1 8 Nm*
Bottle holder M 5 4 Nm*
Bottom bracket BSA according to
manufactur-
er’s instruc-
tions*
Brake caliper, disk
brake, Shimano
(IS and PM)
M 6 6 – 8 Nm
Brake caliper,
disk brake, AVID
(IS and PM)
M 6 8 – 10 Nm
Brake caliper, disk
brake, Magura (IS
and PM)
M 6 6 Nm
General torque for bolted connections
In general, the following torques can be used for
bolted connections:
Dimen-
sions
Screw quality
8.8 10.9 12.9
Unit
M 4 2.7 3.8 4.6 Nm
M 5 5.5 8.0 9.5 Nm
M 6 9.5 13.0 16.0 Nm
M 8 23.0 32.0 39.0 Nm
M 10 46.0 64.0 77.0 Nm
* Use of carbon assembly paste is recommended