Abstract: A device for press-fitting an oil seal S that includes a fixing section F in which a hard ring S is embedded and a lip section L into a structure A. The device includes an air hammer AH that includes a hammer head 1. The hammer head 1 includes a pressing section 6 configured to abut the fixing section F and a holding section 7 configured to abut the lip section L, and a negative pressure space 8 is formed between the hammer head AH and the oil seal S between the pressing section 6 and the holding section 7. The hammer head 1 is provided with an air suction path 11 that is open to the negative pressure space 8 at one end and is connected to an air suctioning means 10 at the other end. Accordingly, the device holds by suction the oil seal S having a complicated shape without deforming it, and adequately press-fits it into a structure A.

Abstract: A device for press-fitting an oil seal S that includes a fixing section F in which a hard ring S is embedded and a lip section L into a structure A. The device includes an air hammer AH that includes a hammer head 1. The hammer head 1 includes a pressing section 6 configured to abut the fixing section F and a holding section 7 configured to abut the lip section L, and a negative pressure space 8 is formed between the hammer head AH and the oil seal S between the pressing section 6 and the holding section 7. The hammer head 1 is provided with an air suction path 11 that is open to the negative pressure space 8 at one end and is connected to an air suctioning means 10 at the other end. Accordingly, the device holds by suction the oil seal S having a complicated shape without deforming it, and adequately press-fits it into a structure A.