6159924120_04
8 / 9 09/2021
There are three design equations to comply with:
l < d x A/C + B l < d x D/C + E *
l < d x (k1 x C + k2 + k3/C)/1000 + K *
*: equations applicable only when all the constants are set to values in the table below.
where:
l mm Total shaft + socket length measured fully extended from the front bearing to socket
tip
d mm Pattern diameter on wheel multis or minimum distance between spindle shafts
C Nm Tightening torque
A, B, D, E -Constants depending on module size (refer to the table below)
k1, k2, k3
and K
-Constants depending on module size (refer to the table below)
Overall recommendations:
• Make sure that the screw is quality class 12.9 and that the correct torque is applied (Refer to Figure
A page 13).
• If the application requires a longer shaft length "l" than calculated with the equations, it is advised to
select a greater size of square drive.
DESIGN LIMITATIONS FOR MULTI SPINDLES (TELESCOPIC 43-51-60)
Tool
model
Telescopic
module part
number
A B D E K1 K2 K3 K
EFD 3/8” 6153970135 60 -10 - - -3.75 -156 25 650 57
EFDE 1/2“ 6153970175 180 -20 518 -1.25 -1.25 -180 64 250 40
EFDE 3/4“ 6153970145 195 -20 570 - - - - 40
Output shafts of modules 6153970175 (3/4") and 6153970145 (1/2") have a common design and
can be swapped.