Patent ID: 8790018

Claim:
A drum motor ( 10 ) comprising: a drum tube ( 11 ) having an interior ( 12 ), a spatially fixed shaft ( 13 ) in the interior ( 12 ) of the drum tube ( 11 ), an inner cover ( 20 ) for accommodating a bearing ( 14 ) to support the drum tube ( 11 ) rotatably about the shaft ( 13 ) and for internally sealing off the interior ( 12 ), and an outer cover ( 30 ) for covering a drum tube end and for externally sealing off the interior ( 12 ), wherein the inner cover ( 20 ) has at least one oil hole ( 15 ), wherein the oil hole ( 15 ) has a thread for receiving a sealing screw ( 16 ), wherein the drum motor ( 10 ) has an outer sealing ring ( 31 ) between the outer cover ( 30 ) and the drum tube ( 11 ), and wherein the drum motor ( 10 ) has a sealing ring ( 17 ) between the inner cover ( 20 ) and the shaft ( 13 ).