Pulsafeeder Pulsalube 8 GS Ultra, Operation & Maintenance Manual

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FLEXBLOC
™
(SI/SID SERIES) WORM GEAR
LUBRICATION GUIDELINES
RETAIN FOR FUTURE USE
U10810 - 1 of 2
1. Importance of Proper Lubrication
Proper gearbox lubrication is essential in order to reduce fric-
tion, heat, and component wear. Lubricants reduce heat and
wear by inserting a protective “fluid boundary” between
mating parts and preventing direct metal to metal contact.
Lubricants also help prevent corrosion and oxidation, mini-
mize foam, improve heat transfer, optimize reducer efficien-
cy, absorb shock loads and reduce noise.
2. Factory Oil-Filled / Maintence-Free
NORD modular worm gear units are inherently maintence-
free, factory oil filled, and supplied with a high-quality, long-
life, synthetic oil which is intend to be suitable for the life of
the gear unit.
FLEXBLOC ™ SI worm gear units are filled at time of assembly
to a universal oil fill, allowing for many mounting position
possibilities. See user manual U13300.
3. Standard oil type
FLEXBLOC ™ (SI/SID) worm gear units are factory filled with
synthetic poly glycol oil. Food-grade polyglycol oil is option-
al. The specific oil type and viscosity grade are displayed on
the reducer nameplate. See user manual 11060 for specific
FLEXBLOC
™ (SI/SID) worm lubrication types and options.
STOP
HARMFUL SITUATION
STOP
In worm gears avoid using extreme pressure (EP) gear oils
containing sulfur-phosphorous chemistries; these additives
can react adversely with bronze worm gears, and acceler-
ate wear.
4. Efficiency
It is important to consider the following, when ordering worm
gears.
• Worm gears reach their peak rated efficiency, after they
undergo a natural run-in process (up to 25 hours operating
time at maximum rated load). Catalog published power and
torque figures are based upon the rated efficiency after the
run-in is complete.
• Worm gears have naturally lower startup efficiencies
compared to operating efficiencies. As input speed increases
the enhanced hydrodynamic effects of the oil result in less
tooth friction and increased worm gear efficiency.
IMPORTANT NOTE
Worm gear reducers applied in cold temperature service , may
require increased motor power for the following reasons:
• Lower operating temperatures, cause lubrication viscosity
to increase in both the gearbox and in the moving areas
of the driven machine.
•
Worm-gears have naturally lower start-up efficiencies
compared to operating efficiencies.
• In extreme cases, one might need to consider increasing
the motor power and lowering the oil viscosity
5. Optional Vent Kits
FLEXBLOC™ (SI) worm gear units are designed to operate
sealed or vented. As a standard the modular worm gear units
are factory oil filled and supplied with oil plugs in the hous-
ing, making vent plugs optional. See user manual U14800 for
vent locations.
NORD can supply an AUTOVENT ™ or an open vent with each
gear unit size. If a vent is desired the type must be speci-
fied at the time of order. Reducer vents are sealed with a
transportation plug that must be removed prior to gear unit
start-up.
Type Transportation
Seal
Installation Part Number
AUTOVENT
™
Included
Factory or
Field site
66093510
Open Vent None Field Only 60693500
Open Vent Included
Factory or
Field site
22008004 (vent)
25308120 (gasket)
Unless noted by a seperate part number, vent kits include the housing gasket
To prevent build-up of excessive pressure, sealed vents
must be activated as shown prior to gear unit start-up.
WARNING
6. AUTOVENT™
The AUTOVENT™ helps prevent bearing and gear damage
by behaving like a check valve to block the entry of foreign
material (water, dust, corrosives, etc.). The breather opens at
approximately 2-3 psi during operation and closes tightly as
the gearbox cools. This option is perfect for humid conditions
and wash-down environments, helping to maintain proper
oil cleanliness, while reducing foaming and oxidation.
7. Open Vent
A typical gearbox industry open vent option can also be sup-
plied by NORD. This option allows free exchange of air and
does not build-up any back pressure inside the gear unit.
This option is ideal for many operating conditions where the
geared product is used in relatively clean and moisture-free
environment.
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NORD Gear Corporation
Toll Free in the United States: 888.314.6673
NORD Gear Limited
Toll Free in Canada: 800.668.4378