6 Hyponic® Operating and Maintenance Manual
Hyponic® Operating and Maintenance Manual 7
www.SumitomoDrive.com
Series Frame Size Type Bolt Size
RNFJ(M)
RNFX(M)
RNFM
1120
Through Hole
M6
1220, 1230 M8
1320, 1330, 1340 M10
1420, 1430, 1440
1520, 1521, 1522
M12
1530, 1540 M16
1630, 1631,
1632,1633, 1640
M20
Connecting to the Driven Machine
1. Mount the gearmotor on a rigid surface.
2. Ensure there is no restriction for mounting angle.
3. Use hexagon socket head bolts when mounting RNF series (flange-mount type). See Table 2 for bolt sizes.
a. V belts, keep parallelism and eccentricity β if the pulleys within 20’ as shown on Figure 4.
b. Couplings, align according to the coupling manufacturer’s recommendation.
c. Chains, sprockets or gears, select a pitch circle diameter at least 3 times the shaft diameter. For chain tension,
please refer to the chain manufacturer recommendation and keep tension angle perpendicular to the shaft.
Table 2. Flange Mount Bolt Size.
Flange or Foot Mount
Solid Shaft Type
When mounting connected equipment, do not apply impact or excessive axial or radial load to the shaft. The
bearing could be damaged, or the collar could come off.
Excessively loose chains will cause a jolt upon start-up that may damage the Hyponic® unit and the driven
machine. Excessive tension of V-belts or chain may cause bearing failure.
1. Mount the connecting device, such as a coupling, chain, sprocket, gear or V-pulley, on the shaft as close as possible
to the shaft collar as shown in Figure 2. This places the load point between the center of the shaft and the shaft
collar.
2. We recommend using end cap screws or interference fit on the connecting device to avoid possible bearing
damage from excessive force or thrust load that may be applied to the shaft while fitting the connecting device
(Figure 3).
3. When connecting the Hyponic® unit to the driven machine with:
Fig. 2
Fig. 4
Fig. 3
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