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USE THIS DIAGRAM FOR THE C200 AND C250 MASTER COMBOGEAR
TORQUE ARM MOUNTING POSITIONS
Torque arm mounting is a common mounting for
hollow-shaft units. The reducer hollow output shaft is
slipped over and supported by the shaft extension of
the head pulley. Torque reaction is taken by a torque
arm (radius arm) and tie rod arrangement, preferably
in tension. Typically, brackets are bolted to the foot
holes of the gearcase to provide an attachment point
for the tie rod. The opposite end of the tie rod is
anchored (through a flexible joint) to the machine
frame or floor. Since shafts and attachments seldom
run true, the reducer may have eccentric movement.
The tie rod and anchor joints must have enough
freedom of movement to prevent metal fatigue in any
of the torque reaction components. The proper
orientation of the tie rod is at right angles (up to +/-20
degrees is normally acceptable) to a line between the
point of attachment of the torque arm to the reducer
and the output shaft. This is designated as the "radius
arm" in Figure 3. Tie rod kits are available from Master.
INPUT SEALING SYSTEM
The MASTER ComboGear reducer (Fig. 4)
incorporates the RELIALUBE system and requires no
scheduled maintenance. Seals are normal wear items,
strongly effected by operating environment, and may
require periodic replacement.
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