21 / 24Festo 7DZF / DZHb_en
4.4.6 Attaching the bearing and end caps
• To protect the bearing and seals, place the appropriate mounting sleeve
(see chapter 7.2 "Special tools") on the thread of the piston rod to prevent
damage.
• Guide the bearing cap (both bearing caps on cylinders with through piston
rod (S2 / S20)) over the mounting sleeve onto the piston rod as far as the
cylinder barrel.
• Place the end cap at the other end of the cylinder barrel.
• Apply the screw locking agent included in the set of wearing parts to the
screws.
• Turn the screws through the bearing and end caps (through both bearing
caps on cylinders with through piston rod (S2/S20)) into the cylinder barrel.
• Align the bearing and end caps ush with the cylinder barrel.
• Tighten the screws using the appropriate torque (see table).
Type Torque
DZH-16 3 Nm
DZH-20 3 Nm
DZH-25 6 Nm
DZH-32 11 Nm
DZH-40 11 Nm
DZH-50 15 Nm
DZH-63 15 Nm
• Perform a functional test as per the operating instructions (enclosed with
the cylinder or can be called up on the Festo website (www.Festo.com))
and commission the repaired cylinder.
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