A screw conveyor drive consists of three sub-
assemblies listed below.
Reducer-Includes speed reducer, shaft retainer,
retainer bolt and lockwasher.
lockwashers, a lip type seal, 2 braided type seals
and seal retaining ring.
Drive Shaft-Includes shaft and key
Make certain none of the parts have been damaged
in shipment. Any shipping damage should be promptly
reported to the carrier. Read all instructions in this
manual before attempting to assemble or install the
Screw Conveyor Drive. It is important that assembly be
performed in the following sequence and that each step
be completed before continuing to the next.
Place reducer on blocks so that it lays flat with the
input shaft down.
Position adapter on reducer output hub so that small
end (end with 12 holes) rests on reducer. Select the
4 mounting holes to match the shaft used (see Fig.
Place adapter screws and lockwashers through
adapter and thread into reducer. Do not tighten.
Select either lip type or braided type seals and install
Lip Type Seals. Place seal in adapter so that spring
faces out. Seal should be tapped evenly into place
in the adapter with a soft hammer, applying force
only on the outer corner of the seal. Fill cavity
between lips of seal with grease. Install seal retainer
ring by tapping with a hammer. Apply grease to
adapter section of shaft (middle section). Slide
shaft, keyseated end first, into adapter and through
reducer. Note: Be extremely careful when sliding
adapter section of shaft through seal to prevent seal
lips from being damaged or rolled over.
Braided Type Seals. Flatten both seals with a soft
hammer. Place seals in adapter, one on top of the
other with joints offset from each other. Lay retaining
ring loosely on top of seals. Slide shaft, keyseated
end first, into adapter and through reducer. Take
care to clear the seals with the adapter section of the
shaft, Once shaft has bottomed, seat retainer ring by
simultaneously hitting the face of the ring on
opposite sides of the shaft with two hammers.
Carefully place reducer on its side. Rotate shaft to
align keyseats in shaft and output hub and install
key. Install shaft retainer, lockwasher and bolt.
Tighten bolt to torque specified in Table 4 on page 8.
Lay reducer on blocks with input shaft down and
tighten adapter bolts to torque specified in Table 4
on page 8.
If waste packing is to be used, it may be installed
through access hole provided in the adapter. Waste
packing, not furnished with screw conveyor drive,
may be used as a separate seal option or in
combination with either the lip or braided seals.
Determine the running positions of the screw
conveyor drive. Running positions are shown in Fig.
2. Note that the reducer is supplied with 7 plugs; 5
around the sides of the reducer for horizontal
installations and 1 on each face for vertical
installations. These plugs must be arranged relative
to the running positions as follows:
Horizontal Installations-Install the magnetic drain
plug in the hole closest to the bottom of the reducer.
Throw away the tape that covers the filler/ventilation
plug in shipment and install plug in topmost hole. Of
the 3 remaining plugs on the sides of the reducer,
the lowest one is the minimum oil level plug.
Vertical Installations-Install the filler/ventilation plug
in the hole provided in the top face of the reducer
housing. Use the hole in the bottom face for the
magnetic drain plug. Of the 5 remaining holes on
the sides of the reducer, use a plug in the upper
housing half for the minimum oil level plug.
unexpectedly started, turn off and
lock out or tag power source before
proceeding. Failure to observe these
precautions could result in bodily