North American Windpower
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Buyer's Guide Home > GBOC Inc.


Gearbox Services & Repair

PO Box 103
1185 State Hwy 91
Lake Wilson MN 56151
Phone: 507-227-2839
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Contact Person: John Kennebeck

GBOC is a mobile oil change-out service company for wind turbine gearboxes. Our systems filter new, flush and rinse oils down to ISO standards and use three separate lines and four separate tanks to avoid any contamination. In-line magnets in both new and flush lines aid in identifying problems in your gearbox. We do basic oil changes to oil conversions with a rinse. Contact or go to


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