9 b is provided it can be located according to the preference of the user the plate heat exchanger may include two or more removable tightening bolts 9 b the removable bolt 9 b is equipped with one shaft connection 18 see fig6 and 13 between the drive unit 10 and the movable end plate 3 which is designed in a manner so that it can easily be separated from a shaft 19 of the drive unit 10 without moving the bolt 9 b axially in fig6 one possible shaft connection design is shown but other shaft connections are also possible fig1 shows that the shaft connection 18 comprises two parts 18 a and 18 b that put together by a screw joint 30 the parts 18 a and 18 b are typically clamped onto the bolt 9 b and the shaft 19 respectively as discussed above the tightening bolt 9 is provided with bolt head means 11 situated at the end plate 2 see fig1 5 and 7 9 the bolt head means 11 comprises a bearing unit 20 20 a 20 b 20 c on the end plate that supports the bolt 9 9 a 9 b 9 c and taking up the axial forces the end plate 2 has a cut out 21 see fig1 and 8 9 located on each long side of the end plate 2 allowing the removable bolt 9 b to be removed radially the bearing unit 20 is fixed to the end plate 2 by screws locking pins or other attaching means 60 to support the bearing unit 20 axially when the movable end plate 3 is moved in direction from the end plate 2 the center located.