SEW Gearmotors - SEW Eurodrive

SEW Gearmotors
Service and Maintenance
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Overview
ƒ This presentation covers the following topics:
- Nameplate Information
- Mounting Positions
- Lubrication
- Breather Plugs
- Maintenance
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Nameplate Information
ƒ Reducer Nameplates
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Nameplate Information
ƒ Nameplate Fields
-
Type
SO Number
Mounting Position
Lubrication
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Mounting Positions
ƒ SEW Standard Mounting Positions
K-Box
R-Box
F-Box
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Mounting Positions
ƒ R-Boxes
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Mounting Positions
ƒ K-Boxes
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Mounting Positions
ƒ F-Boxes
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Mounting Positions
ƒ Why Are Mounting Positions Important?
• Mounting positions determine:
- Oil Quantity
- Bearing Lubrication
Reducer filled
according to M1,
but mounted at
M4
Oil Level
What will happen
to the bearings
toward the front
of the reducer?
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Mounting Positions
ƒ Special Assembly Required for Some Mounting Positions
- K-Box reducer assembled for M1 cannot be used for M5 or M6
NILOS rings are used on
certain mounting positions
to retain grease in a bearing.
This procedure is necessary
because the oil level does
not reach some bearings in
certain mounting positions.
What effect will not using a
NILOS ring have on a K-box
mounted at M5 or M6?
Oil Level
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Lubrication
ƒ Why Is Lubrication Important?
• Proper lubrication provides the following benefits:
- Increased reducer life
- Reduced friction and wear
- Increases efficiency
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Lubrication
ƒ Lubrication Maintenance Requirements
- Inspect oil levels and oil quantity at regular intervals.
- Change oil at 10,000 operating hours or 2 years.
- Clean and repack greased bearings at 10,000 operating hours.
Note:
If you use synthetic lubricants, you can effectively increase the
maintenance cycle to 4 years.
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Lubrication
ƒ Lubrication Amounts
- Correct amounts are vital, because too much or not enough
causes overheating.
Which requires more
effort?
Walking thru six inches
of snow…
or
Walking thru six feet of
snow…
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Lubrication
ƒ Lubrication Information
- Lubrication specifications, are located in Reducer Operating
Instructions 01 805 52 US.
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Breather Plugs
ƒ What is a breather plug?
- A breather plug is a device that allows the gearbox to breathe, thus
equalizing internal and external pressure.
Air inside the reducer
expands during
operation and contracts
when not in operation.
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Breather Plugs
ƒ Proper Breather Plug Operation
- Breather plugs equalize the internal pressure of the reducer with that of
the outside environment.
Inside
=
Outside
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Breather Plugs
ƒ Proper Installation Ensures Effective Operation
- The location of breather plug is critical
- The rubber grommet must be removed for proper operation
Correct
Incorrect
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Breather Plugs
ƒ Incorrect Installation Results In the Following
- Overheating
- Loss of lubrication
- Unseating of seals and closing caps
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Maintenance
ƒ Proper maintenance is critical for optimal performance
- Proper understanding of nameplate Information
- Proper mounting position
- Regular Oil level checks
- Proper amount of lubrication used
- Correct breather plug installation
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