HBK U9C, Mounting Instructions

Page: 19 / 144

17
U9C
MECHANICAL INSTALLATION
You will find the diameters of the knuckle eyes and shafts and their recommended
tolerances in the table below.
Knuckle eyes
Nominal
diameter
Hole fitting
size
Recommended shaft
fitting size
1-Z8/100kg/ZGW 5
H7 g6
1-U9/20kg/ZGWR 10
1-U9a/50kg/ZGW 16
Tab. 7.2 Recommended fitting sizes/tolerances for shaft and hole
Customer’s construction
Customer’s shaft holder
Shaft
Play based on recommended fitting
size,
see Tab. 7.2, page 17
Threaded connector for mount­
ing on force transducers
Fig. 7.3 Example diagram of installation with knuckle eye
CAUTION
If a shaft with an overly small diameter is used, the bearing of the knuckle eye will be sub­
jected to linear load. This subjects the inner bearing shell to excessive load, which can lead
to damage and, if forces are high, can cause the knuckle eye bearing to break.
Select the shaft as recommended in the mounting instructions.