KSB Multitec - Page 22

Multitec
When tightening shaft nuts, the following has to be observed :
The shaft nuts must be tightened according to the values indicated in the table “Tightening Torques of Shaft Nuts”.
Tightening of the Shaft Nuts of the Multitec
Shaft nuts without lockwasher
Does not apply to drive side of MTC 32/50/65 with self-locking shaft nut.
Tightening torques for shaft nuts
Drive End Non-drive End
Size A, B, C, D E, F, V A, B, E, F, V C, D
Nut Nm Nut Nm Nut Nm Nut Nm
80
1
) 80
1
) 80
1
)
MTC 32 M 25x1,5 40 (***) M25x1,5 40 (***) M 25x1,5 40 M 25x1,5 40
100 (*)
80
1
) 80
1
) 80
1
)
MTC 50 M 30x1,5 40 (***) M 25x1,5 40 (***) M 30x1,5 40 M 30x1,5 40
120 (*)
100
1
) 80
1
) 100
MTC 65 M 35x1,5 50 (***) M 30x1,5 40 (***) M 35x1,5 50 M 35x1,5 50
150 (*)
150
1
) 150
1
) 150
1
)
MTC 100
M 42x1,5
50 M 42x1,5 50 M 42x1,5 50 M 42x1,5 50
(2x)
150 (*) 150 (*) 150 (*)
200
1
) 200
1
) 200
1
)
MTC 125
M 52x1,5
60 M 52x1,5 60 M 50x1,5 60 M 52x1,5 60 (***)
(2x)
200 (*) 200 (*) 200 (*)
250
1
) 250
1
) 250
1
)
MTC 150
M 62x1,5
80
M 62x1,5
80 M 60x1,5 80
M 62x1,5
80
(2x)
250 (*)
(2x)
250 (*) 250 (*)
(2x)
250 (*)
1) loosen after first tightening
(*) block when tightening first nut
(**) self-locking nut
(***) bend over lockwasher
Tightening of the Shaft Nuts of the Multitec
Nut with lockwasher - (drive end and non-drive end for versions C and D)
M1 1.) Tighten nut with torque M1, then loosen again
M2 2.) Tighten with torque M2 and bend over lockwasher
Nut with counter-nut - drive end (and non-drive end for versions C and D)
M1 1.) Tighten first nut with torque M1, then loose again
M2 2.) Tighten first nut with torque M2
M3 3.) Tighten second nut with torque M3, at the same time block first nut
Nut with counter-nut - drive end (except for versions C and D)
M1 1.) Tighten first nut with torque M1
M2 2.) Tighten second nut with torque M2, at the same time block first nut
Self-locking nut - old design MTC E/F/V 32/50/65 (drive side) No torques specified.
No torques given
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