24
■
9-2. 3.7kW
It is usually sufficient to monitor the operational status of the brake, but be aware of the following while
brake function is not well:
The brake lining becomes worn and brake toque will be lower, due to the force of friction between the
brake plate
⑪
, the armature
④
and the lining
⑤
. It is necessary to change the lining in case the thickness
will become below limit.
It is necessary to clean up every 6 months the brake lining wear.
(1) Brake structure
(2) Brake inspection and gap adjustment
It is necessary to adjust the gap when the thickness of lining and gap reach limit, otherwise brake will be
not able to function well. Depending on usage condition, the lining and gap may reach to limit, Lining limit
as following.
Brake gap and lining limit
⑦
Yoke
⑦
Stud bolts
⑬
Hub
②
Coil
⑧
Liner
⑭
Silencer fitting
③
Spring
⑨
Distance collar
⑮
O-ring
④
Armature
⑩
Hexagon nut
⑯
Brake cover
⑤
Lining
⑪
Brake plate
⑰
Clip
⑥
Bracket
⑫
Water proof packing
⑱
Key
Motor kw
3.7kW
(
200V
)
3.7kW
(
400V
)
Brake type
VNB371K
(
NB-31186
)
VNB371K
(
NB-31187
)
Initial lining (mm)
12.0
Lining limit (mm)
9.6
Gap standard (mm)
0.3
Gap limit (mm)
0.6
★