12
Common
5. Coupling with Other Machines
5-3 Coupling
hollow shaft type
with other machines
(1) Attachment and Removal of Hollow shaft and Driven Shaft
(a) Attachment to Driven Shaft
Apply molybdenum disulfide grease to the surface of driven shaft and inner diameter of hollow shaft. Insert the gearmotor or
reducer to driven shaft.
Pound the end surface of hollow shaft lightly with a wooden hammer when the fitting is tight.
Do not pound casing and oil seal for this purpose. Jigs as shown in Fig. 8 can help smooth insertion when the fitting is especially
tight.
Fig.8 Coupling jig
e
c
b
a
d
(a) .......... Retaining ring
(b) .......... Spacer
(c) .......... Thrust bearing
(d) .......... Nut
(e) .......... Bolt
Hollow shaft conforms to JIS H8.
Make the fitting between hollow shaft and driven shaft when there is shock load or when the radial load is large. (js6 or k6 of JIS
standard is recommended for driven shaft.)
(b) Uncoupling from driven shaft
Make sure there is no excess force between casing and hollow shaft. Jig as shown in Fig. 9 can help smooth removal.
Prepare jig and parts for attachment, fixing, and removal by yourself.
g
h
A
i
f
A
(f) ............Spacer
(g) .......... Upper bolt
(h) .......... Disc
(i) ........... Retaining ring
Fig.9 Uncoupling jig
