Lubrication & installation – Grove Gear Helical-Worm Cast Iron (S Series) User Manual

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Fax: (262) 878-1968


Lubrication & Installation


lubricant which is recommended for Helical Worm Gear Drives
in most applications, especially those subject to low start up
temperature and/or high operating temperature. This
lubricant is a synthesized hydrocarbon based material which
provides longer lubrication intervals because of its increased
resistance to thermal and oxidative degradation. This
decreases maintenance costs. Further economy is realized
because of the increased efficiency of units lubricated with
operated at temperatures considerably above 225°F (107°C).
However, the factory should always be contacted prior to
operating at high temperatures as damage may occur to seals
or other components. Lubricant manufacturer and GROVE
GEAR should be contacted when substituting a premium
lubricant where MOBILGEAR SYNTHETIC lubrication is
recommended. GROVE GEAR should also be contacted for
proper lubricant selection for ambient temperatures below
40°F (4°C) or intermittent duty.

Do not mix nonsynthetic and synthetic oil in

the unit.

If unit is used in the food or drug industry

(including animal food) consult the petroleum supplier or
GROVE GEAR for recommendation of lubricants which meet
the specifications of FDA, USDA and/or other authoritative
bodies having jurisdiction. Standard lubricants are not suitable
for these applications or these industries.


Make certain that the power supply is

disconnected before attempting to service or install the unit,
or remove or install any components. Lock out the power
supply, and tag it to prevent unsuspected application of


For safety, purchaser or user should provide

protective shields over all shaft extensions and any moving
apparatus mounted on the unit. The user is responsible
for checking all applicable safety codes in his area and
providing suitable shields.

A unit cannot be used as an integral part of a

machine super-structure which would impose additional
loads on the unit other than those imposed by the torque
being transmitted, or by any shaft mounted power
transmitting device such as sprockets, pulleys, or couplings.

Units ARE NOT to be considered fail safe or self

locking devices. If these features are required, a properly sized,
independent holding device must be utilized.

For safe operation and to continue the unit

warranty, when installing, reinstalling, or replacing a factory
installed fastener for servicing purpose, or to accommodate
the mounting of guards, shields or other light load imposing
devices, or for mounting the unit, it becomes the
responsibility of the purchaser or user to properly determine
the quality, grade of fastener, thread engagement, load
carrying capacity, tightening, torque, and the means of torque


Flexible couplings to input and output shafts are
recommended because they minimize excessive bearing and
shaft loading caused by misalignment. Follow coupling
manufacturer’s installation directions.

Shaft Mounted Models

GROVE GEAR recommends application of an anti-seize
compound, such as Dow-Corning® 1000 High Temperature
Anti-seize Paste or Never-Seez®, to the driven shaft during
installation. This assists in preventing fretting corrosion and
aids in unit removal. Driven shaft should be supported
independently with pillow block bearings. A suitable Torque
Arm must be provided and can be ordered separately (not
supplied) to keep unit from rotating. A torque arm pad can be
attached to any of the four available mounting surface
locations of the unit. Install and position Torque Arm at 90°
angle to a line drawn between the center of the output
hollow bore and the bolt that attaches the Torque Arm to the
Torque Arm Pad of the unit. The Torque Arm should be
positioned to be in tension, NOT compression, based on
output rotation of the gear drive. (Refer to Figure 1). A rigid
torque arm an cause bearings to “load up” and cause
premature bearing failure. To prevent this, provide a slight
amount of “float” at the torque arm pivot points.

Inspect shafts and components for paint, burrs,

or other imperfections before installing components. Do not
use excessive force or pounding to install components onto
unit shafts, as this may cause damage to shafts, bearings, or

Preventative Maintenance

Keep shafts and vent plug clean to prevent foreign particles
from entering seals or gear case. Inspect periodically for oil

Sheaves and Sprockets

When mounting sheaves or sprockets, they should be located
as close to the Helical Bevel Gear Drive as possible. Excessive
overhung load could result in premature failures of bearings
or shaft. Refer to the general catalog or contact your local
distributor for overhung load ratings.

Any brakes that are used in conjunction with a

unit must be sized or positioned in such a way so as to not
subject the unit to loads beyond the capacities published in
the current catalog.

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