Patent ID: 8316685

Claim:
A roller holder unit for a pressing tool with a piston-cylinder unit ( 50 ), in which clamping jaws ( 62 ) of a clamping pincer ( 60 ) are connected to a fork-like receiver ( 55 ) by a retaining bolt, the roller holder unit comprising: rollers ( 2 ) that roll on the clamping jaws ( 62 ) of the clamping pincer ( 60 ), to move the clamping pincer ( 60 ) by the piston-cylinder unit ( 50 ), wherein a pressing is carried out by the clamping jaws ( 62 ) by a rear end being pressed apart by a movement of the rollers ( 2 ) in an axial direction R, a bearing block ( 1 ) including thereon at least one lateral retaining plate ( 3 ), the bearing block ( 1 ) including a sliding bearing surface ( 11 , 12 ) for each of the rollers ( 2 ), securing pins ( 21 ) holding the rollers ( 2 ) to the retaining plate ( 3 ), the rollers ( 2 ) held freely rotatable by the securing pins ( 21 ) so that the rollers ( 2 ) at a periphery in a region between the securing pins ( 21 ) contact one another along a contact line (B), and a dirt collection chamber ( 71 ) in a region between contact surfaces of the rollers ( 2 ) with the sliding bearing surfaces ( 11 , 12 ) and the contact line (B) of the two rollers ( 2 ).