Nabrico DF-1 Series, Owner'S Manual

41

NABRICO DF-1 ND ELECTRIC WINCH Owner’s Manual

OM-DF1-017-G

DRIVESYSTEMS

HELICAL & BEVEL REDUCER LUBRICATION

RETAIN FOR FUTURE USE

U10750 - 1 of 2

1.  Importance of proper lubrication

Proper  gearbox  lubrication  is  essential  in  order  to  reduce 

friction, heat, and component wear.  Lubricants reduce heat 

and wear by inserting a protective “fl uid 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 effi ciency,

absorb shock loads and reduce noise.

Most NORD reducers are shipped from the factory with a 

pre-determined oil fi Il level in accordance to the specifi ed 

reducer size and mounting position.

2.  Standard oil type

The following tables indicate the standard oil fi ll type used.  

Please see user manual U11000 for more specifi c information 

and for optional helical and bevel gear lubricants:

Serviceable Gear Units

Helical In-line

Standard Oil Fill:

ISO VG 220, Mineral Oil

Clincher Parallel-Shaft
Right-Angle Bevel
NORDBLOC

®

 Series In-line

NORDBLOC

®

.1 Series In-line

Standard Series In-line

IMPORTANT NOTE

For shipping purposes, the following large Clincher™ gear 

units are supplied without oil:

• Clincher™  Sizes SK11282, SK11382 and SK12382

Maintenance-free / Lubricated For Life Gear Units

Clincher™  sizes  SK0182NB, 

SK0282NB & SK1382NB

Standard Oil Fill:

ISO VG220 SHC/PAO 

Synthetic Oil

NORDBLOC

®

 Sizes SK172, 

SK272, SK371F, SK372, SK373, 

SK320

IMPORTANT NOTE

Maintenance-free units are supplied as sealed units with no 

vent-plug. Consult NORD prior to ordering if interested in 

ordering any of the above sizes as serviceable gear units.

IMPORTANT NOTE

Consult the sticker adjacent to the fi ll plug to determine 

the type of lubricant installed at the factory.  Some units 

have  special  lubricants  designed  to  operate  in  certain 

environments or intended to extend the service life or 

service temperature range of the lubricant.  If in doubt 

about  which  lubricant  is  needed  for  a  certain  applica-

tion, please contact NORD Gear.

3.  Lubrication replacement

If the gear unit is fi lled with mineral oil, the lubricant should 

be  replaced  at  least  after  every  10,000  operating  hours  or 

after every two years. If the gear unit is fi lled with synthetic

oil,  the  lubricant  should  be  replaced  at  least  after  every 

20,000 operating hours or after every four years. Often gear 

reducers are exposed to extreme ambient conditions, hostile 

environments, wet conditions, or dirty and dusty operating 

areas.  Especially in these situations, it is important to estab-

lish a condition-based oil service interval.

4.  Oil viscosity

Viscosity, or the oil’s resistance to shear under load, is often 

considered the single most important property of any gear oil.
•  Often  one  will  consider  making  a  viscosity  correction  to 

  the  oil  to  improve  the  performance  when  operating  the 

  gear unit at low temperature or high temperature.
•  In cases of extreme load conditions, gear pairs and antifric-

  tion bearings may be more susceptible to sliding or scuffi ng 

  wear.  In  these  operating  conditions,  it  may  also  be  ben-

  efi cial to consider an increased lubrication viscosity and/or 

  a lubrication with improved antiwear additive packages.

IMPORTANT NOTE

The  user  should  consult  with  their  primary  lubrication 

supplier before considering changes in oil type or viscosity.

5.  Maximum oil sump temperature limit

To prevent reducer overheating, the reducer’s maximum oil 

sump temperature limit must not be exceeded for prolonged 

periods  of  operation  (up  to  3  hours  continuous  operation

depending upon reducer size).

Oil Type

Maximum Oil Temperature Limit
NORD

AGMA 9005-D94

Mineral

80-85°C (176-185°F)

95°C (203°F)

Synthetic

105°C (220°F)

107°C (225°F)

IMPORTANT NOTE

Use caution when specifying gear reducers for high tem-

perature service.

  If there is concern about exceeding the 

allowable  safe  operating  temperatures,  please  consult 

NORD to discuss alternatives.

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06.01.11

NORD Gear Corporation

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NORD Gear Limited

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