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SEW Gear Reducers
Service and Maintenance
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Objectives
Upon completion of this presentation, you will be able to accomplish the following –
- Understand reducer nameplate information
- Comprehend reducer mounting positions
- Basic Service and Maintenance Principles
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Nameplate Information
SEW Nameplates – Reducer nameplate contains Reducer Data Typically mounted on the reducer inspection cover
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Nameplate Information
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Motor Nameplates - Type - SO Number - Mounting Position - Lubrication
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Mounting Positions
There are six standard mounting positions for gear reducers – M1 M2 M3 M4 M5 M6
M1 is the default mounting position
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Mounting Positions – Shafts/Flanges
There are two locations for gear reducer shafts and flanges –
A is the default mounting position
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Location based on view from motor/input end
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Mounting Positions – Torque Arms
S – series Worm Bevel
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Red denotes standard location per shaft position
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Mounting Positions – Torque Arms
K – 7 series Helical Bevel
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Mounting Positions – Torque Arms
K – 9 series Helical Bevel and Spiroplan® W gear units
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90° 90° 135° 45°
180° 0°
315° 225°
270° 270°
Red denotes standard location per shaft position
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Mounting Positions
Mounting positions effect the following –
- Oil quantity
- Bearing lubrication
- Breather location
- Drain location
- Oil level location
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Mounting Positions – Oil Quantity
SEW reducers typically ship with oil and the amount is based on the final mounting position
Installing a reducer filled with oil in a position different than the position listed on the name plate will result in reducer failure
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M1
M4
The reducer on the right will fail if the oil amount is not adjusted to reflect the new position
Correct oil level is here for M4
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Mounting Positions – Bearing Lubrication
If a unit is not built for M5 or M6 then it cannot be mounted in those positions due to the special construction of an included shield ring
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Shield ring required for M5A and M6B because oil level does not reach the bearing
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Mounting Positions – Breather Location
Breathers are installed based on the following considerations – - Highest point of gear reducer
- Furthest point from the oil level
- Opposite side of output shaft (where possible)
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Breathers M1
M4
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Mounting Positions – Drain Location
Drain plugs are installed based on the following considerations – - Lowest point of gear reducer
- Opposite side of output shaft (where possible)
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M1
M4
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Mounting Positions – Oil Level Location
Oil level plugs are installed based on the following considerations – - At the oil level
- Opposite side of output shaft (where possible)
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Level Plug
M1
M4
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Maintenance – Breathers
Breathers allow the internal pressure of the reducer to equalize with the external atmosphere
- Always completely remove the rubber tab before placing the reducer into service
- Leaks will occur if the rubber tab is not completely removed
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Maintenance – Inspection
Every 3,000 hours of operation, at least every 6 months - Check oil and oil level
- Check running noise for possible bearing damage
- Visual inspection of the seals for leakage
- For gear units with a torque arm: Check and replace the rubber buffers, if necessary
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Maintenance – Inspection
Oil life
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Maintenance – Inspection Purchase of Lubricants
The following information outlines channels through which customers may purchase our standard lubricants. It is separated by vendor.
Shell: Shell’s industrial lubricant website allows customers to find a local distributor based on zip code or state.
http://www.shell.us/products-services/solutions-for-businesses/business-lubricants-tpkg/distributor-locator.html
Fuchs: Fuchs can be contacted directly through the information below. If the customer does not currently have an account with Fuchs they will still be able to make a purchase using a credit card.
Email: [email protected]
Phone: +1 708 333 8900 Website: www.cassida-lubricants.com
Fax: +1 330 998 7052
Klüber: Klüber can be contacted directly through the information below and will allow direct purchase. Klüber also has national agreements with many industrial supply houses such as Kaman, Applied, and Motion. Customers may be able to obtain some products locally through this network.
Klüber Lubrication North America L.P.
32 Industrial Drive Londonderry, NH 03053
Phone:603-647-4104
Fax:603-647-4106 Email: [email protected]
http://www.klueber.com/us/en/
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Conclusion
By taking just a few moments you can head off any potential problems that could lead to expensive downtime and repairs. For more details on the maintenance of your reducers please click on the following link – Operating Instructions To view our other maintenance of SEW mechanical products presentations, please click on the following link – Maintenance Presentations
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