GTO 52 blanket packing

[saheb]

hello everyone
can any one help me in my problem?
what is the ideal thickness of packing needed for the blanket cylinder (include the planket) required for Heidelberg GTO 52

thanks for all

Babylon

 

[Cornishpastythighs]

First you have to figure out what packing you need to get a Plate/Blanket printing squeeze of .004" to .006" assuming you are using a compressible blanket. This is determined by your cylinder undecuts, plate thickness and blanket thickness. Lets say for instance you have a .012" plate cylinder undercut and you are using a .012" thick plate, this would put the plate level with the cylinder bearers and you would require the blanket+packing to be at least .005" above bearer to give you the correct squeeze. Hope that helps.

 

[saheb]

thanks Cornishpastythighs
but how i can know the undercut value of the plate and blanket cylinder at GTO , is it written onthe digram of the side frame of the machine ?

thank you

 

[Cornishpastythighs]

Yes cylinder undercuts should stamped on the side of the press somewhere or in a manual if you have one.

 

[Cornishpastythighs]

Printmaster GTO 52
Technical Specifications
Printing Stock
Thickness 0.03 - 0.4 mm (0.0012 - 0.016 in)
Max. sheet size 360 x 520 mm (14.17 x 20.47 in)
Min. sheet size 105 x 180 mm (4.13 x 7.09 in)
Max. print format 340 x 505 mm (13.39 x 19.88 in)
Gripper margin 8 - 10 mm (0.32 - 0.39 in)
Min. sheet size in perfecting mode 140 x 180 mm (5.51 x 7.09 in)
Max. print format in perfecting mode 340 x 505 mm (13.39 x 19.88 in)
Plates
Length x width 400 x 510 mm (15.75 x 20.08 in)
Thickness up to 0.15 mm (0.006 in)
Plate Cylinder
Undercut 0.03 mm (0.0012 in) Distance from leading edge of plate to start of printing 35 mm (1.4 in)
Blanket Cylinder
Undercut 3.0 mm (0.12 in)
Length x width of blanket 445 x 520 mm (17.52 x 20.47 in)
Blanket thickness 1.9 mm (0.075 in)
Remote Register Adjustments
Circumferential register +/- 2 mm (+/- 0.079 in)
Lateral register +/- 2 mm (+/- 0.079 in)
Pile Heights
Feeder 400 mm (15.75 in)
Standard delivery 400 mm (15.75 in)

 

[saheb]

thanks a lot
this help me much
have a good day