2 Attaching Chains, V-Belts, Gears, etc.
①
②
③
・
・
・ The chain is too loose.
・
3 Attaching and Detaching a Driven Shaft to/from AF3S Type Hollow Shaft
●Attaching a Driven Shaft to the Reducer Hollow Shaft
①
②
③
④
⑤
Tensions for belt and chain
are correct.
The tension of the Chains/V-Belts and the coupling of the gear must be perpendicular to the
center of the shaft.
In any connection, connect the units precisely, so that the center of the shaft of the reducer
and that of the other equipment are parallel.
The positions of pulley and
sprocket are also correct.
In case impact does not apply in the uniform load, loose fit is recommended for the fit tolerance
of driven shaft. In case shock load or heavy radial load is applied to the shaft, the fit should be
tighter. The bore of the hollow shaft is machined to conform to "JIS H8" tolerance.
The length of the driven shaft and the fixing key are recommended to be within the area
where "H8" tolerance for the fixed side bore is required.
It is recommended to minimize the fluctuation of the driven shaft below 0.05 at the shaft
edge. The greater fluctuation may give harmful effect to the reducer.
The sprocket is positioned
in the reverse direction so
that the load point moves
to the shaft edge.
When attaching, be sure to smear extreme pressure agent (molybdenum disulfide, etc.) on the
surface of driven shaft and the bore of the hollow shaft to avoid seizing, and insert the reducer
to the driven shaft.
If the fitting is too tight, for smooth insertion, knock on the hollow drive shaft end gently with
plastic hammer. In this case be sure not to hit the casing. Smoother insertion can be obtained if
you prepare jigs shown in the figure below.
Tension of the V-Belt: Excessive tensioning may result in damage to the bearings of the shaft.
Tension of the Chain: Excessive tensioning may result in damage to the bearings of the shaft. If
the chain is installed loosely, shock load will occur when the drive shaft starts rotation, and this
can result in damage to the reducer and the other equipment. Therefore, adjust the tension of
the chain properly.
Driven Shaft
Key
Area where the tolerance
of the bore should be
within "H8"
Hollow
Shaft
Area where the tolerance
of the bore should be
within "H8" (fixed side).
Spacer
Nut (Output shaft can be
inserted by tightening
the nut.)
Bolt
Bearing
Oil Seal
Figue-1
※Spacer, nut, bolt, key and
other parts for bearing should
be prepared by customer.
Connecting
machine
sprocket
Connecting
machine
Proper Way of Use
Bad Example
6
