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User's Manual of GNS Series

Stripper guide installation

There are 3 methods to install the stripper guide on the mold die.
(1) Press-fit of the post
(2) Static press-fit of the bush – Type A
(3) Static press-fit of the bush – Type B
You can choose one according to the operational conditions.


(1) Press-fit of the post

(1)-1 Drilling a post and bush installation hole
Drilling a post and bush installation hole
  • Installation hole of the bush must be drilled at the punch and die plate in the tolerance of φSDS+0.04 - +0.07.
  • Installation hole of the post must be drilled at the stripper plate in the tolerance of φSD-0.005 - -0.010.

Notes: Remove the plate warp (grind both top & bottom surface), then bore each installation hole. Completely remove the burrs at the mouth of the installation hole with oil stone etc.

(1)-2 Guide post installation
Guide post installation
  • After cleaning the installation hole and the press-fit part of the post, then press to fix the post
    to the hole, so that you can see the serial number on it.
  • Measure the perpendicularity of the installed post. (Standard: Less than 0.01mm per 100mm)

For your reference) Angle direction change of one among the multiple guide posts prevents the mismatch of the punch/die set assembly.
Square guide post: 45 degrees; hexagonal guide post: 90 degrees.

Notes: Do not hit the post with a hammer etc. at the installation.



(1)-3 Preparation for bush installation at the
punch plate side

Preparation for bush installation at the 
           punch plate side
  • Combine the post and the bush at the punch plate side. Make sure the serial number and its position are correspondent between the post and the bush.
  • Place the parallel base block on the stripper plate, put the punch plate on it, precisely fix the base pin on the punch plate and the stripper plate, then slide the bush up and down and check there is no interference in the punch plate.
(1)-4 Bush installation at the punch plate side
Bush installation at the punch plate side
  • After cleaning the bush outer diameter and the installation hole inner diameter with some solvent (alcohol etc.), apply anaerobic adhesive(Loctite638 recommended) to the adhesive flute outer diameter of the bush, insert the bush into the installation hole to the regulated position and dry adhesive (3 to 6 hours under normal temperature).


(1)-5 Bush installation at the die plate side
Bush installation at the die plate side
  • Install the bush on the die plate side as well as the punch plate side.
    Then the installation is complete.



(2)Static press-fit of the bush – Type A

Order of installation: Die plate Stripper plate Punch plate

(2)- 1 Drilling a post and bush installation hole
Drilling a post and bush installation hole
  • Installation hole of the bush must be drilled at the punch plate
    in the tolerance of φSDS+0.04 - +0.07.
  • Installation hole of the post must be drilled at the stripper plate
    in the tolerance of φSD-0.04 - -0.07.
  • Actually measure the bush outer diameter at the die plate side, determine the tolerance
    (target: 0 preload) for the static press-fit. Installation hole of the bush must be drilled at the
    die plate.

※Never fail to make static press-fit of the bush (target: 0 preload) to keep the bush inner diameter and the retainer roller preload.

Notes: Remove the plate warp (grind both top & bottom surface), then bore each installation hole.
Completely remove the burrs at the mouth of the installation hole with oil stone etc.

(2)-2 Bush installation at the die plate side
Bush installation at the die plate side
  • Determine the bush direction so that you can see the serial number on it.
  • After cleaning the bush outer diameter and the installation hole inner diameter with some solvent (alcohol etc.), apply anaerobic adhesive (Loctite638 recommended) to the adhesive flute outer diameter of the bush, insert the bush into the installation hole to the regulated position and dry adhesive (3 to 6 hours under normal temperature).


(2)-3 Preparation for the post installation
Preparation for the post installation
  • Place the parallel base block on the die plate, put the stripper plate on it, precisely fix the base pin on the die plate and the stripper plate.
  • Combine the post and the bush. Make sure the serial number and its position are correspondent between the post and the bush, then slide the post up and down and check there is no interference in the stripper plate.
(2)-4 Post installation
Post installation
  • After cleaning the bush outer diameter and the installation hole inner diameter with some solvent (alcohol etc.), apply anaerobic adhesive (Loctite638 recommended) to the adhesive flute outer diameter of the post, insert the bush into the installation hole to the regulated position and dry adhesive (3 to 6 hours under normal temperature).


(2)-5 Preparation for bush installation at the punch plate side
Preparation for bush installation at the punch plate side
  • Place the parallel base block on the stripper plate, put the punch plate on it, precisely fix the base pin on the punch plate and the stripper plate.
  • Combine the post and the bush at the punch plate side. Make sure the serial number and its position are correspondent between the post and the bush.
  • Slide the bush up and down and check there is no interference in the punch plate.
(2)-6 Bush installation at the punch
plate side

Bush installation at the punch 
plate side
  • After cleaning the bush outer diameter and the installation hole inner diameter with some solvent (alcohol etc.), apply anaerobic adhesive (Loctite638 recommended) to the adhesive flute outer diameter of the bush, insert the bush into the installation hole to the regulated position and dry adhesive (3 to 6 hours under normal temperature).
    Then the installation is complete.



(3)Static press-fit of the bush – Type B

Order of installation: Die plate Punch plate Stripper plate

(3)-1 Drilling a post and bush installation hole
Drilling a post and bush installation hole
  • Installation hole of the bush must be drilled at the punch plate in the tolerance of φSDS+0.04 - +0.07.
  • Installation hole of the post must be drilled at the stripper plate in the tolerance of φSD-0.04 - -0.07.
  • Actually measure the bush outer diameter at the die plate side, determine the tolerance (target: 0 preload) for the static press-fit.
    Installation hole of the bush must be drilled at the die plate.

    ※Never fail to make static press-fit of the bush (target: 0 preload) to keep the bush inner diameter and the retainer roller preload.

Notes: Remove the plate warp (grind both top & bottom surface), then bore each installation hole. Completely remove the burrs at the mouth of the installation hole with oil stone etc.

(3)-2 Bush installation at the die plate side
Bush installation at the die plate side
  • Determine the bush direction so that you can see the serial
    number on it.
  • After cleaning the bush outer diameter and the installation hole inner diameter with some solvent (alcohol etc.), apply anaerobic adhesive (Loctite638 recommended) to the adhesive flute outer diameter of the bush, insert the bush into the installation hole to the regulated position and dry adhesive (3 to 6 hours under normal temperature).


(3)-3 Preparation for bush installation at
the punch plate side

Preparation for bush installation at 
            the  punch plate side
  • Combine the post and the bush at the die plate side. Make sure the serial number and its
    position are correspondent between the post and the bush.
  • Place the parallel base block on the die plate, put the punch plate on it, precisely fix the base
    pin on the die plate and the punch plate.
  • Combine the post and the bush at the punch plate side. Make sure the serial number and its
    position are correspondent between the post and the bush.
  • Slide the bush up and down and check there is no interference with the punch plate.
(3)-4 Bush installation at the punch plate side
Bush installation at the punch plate side
  • After cleaning the bush outer diameter and the installation hole inner diameter with some solvent (alcohol etc.), apply anaerobic adhesive (Loctite638 recommended) to the adhesive flute outer diameter of the bush, insert the bush into the installation hole to the regulated position and dry adhesive (3 to 6 hours under normal temperature).


(3)-5 Preparation for the stripper plate installation
Preparation for the stripper plate  installation
  • Remove the post from the die plate, then insert the post into the stripper plate and the die plate in this order. Make sure the serial number and its position are correspondent between the post and the bush.
  • Place the parallel base block on the die plate, put the stripper plate and the punch plate on it, precisely fix the base pin on the die plate, the stripper plate and the punch plate.
  • Slide the post up and down and check there is no interference with the stripper plate.
(3)-6 Stripper plate installation
Stripper plate installation
  • After cleaning the post outer diameter and the installation hole inner diameter with some solvent (alcohol etc.), apply anaerobic adhesive (Loctite638 recommended) to the adhesive flute outer diameter of the post, insert the bush into the installation hole to the regulated position and dry adhesive (3 to 6 hours under normal temperature). Then the installation is complete.


Re-installation of the stripper guide

1.Re-installation of the post
Re-installation of the post
  • Place the parallel base block on the die plate, put the stripper plate on it.
  • Assemble the post with the bush that is glued at the die plate, with the serial number and its position fit.
  • Adjust the stripper plate position by sliding the post up and down, so that the post does not interfere with the installation hole of the stripper plate.
  • After cleaning the post intallation part and the installation hole inner diameter, and make the static press-fit or the adhesion fix of the stripper plate and the post.
2.Re-installation of the punch plate
Re-installation of the punch plate
  • Assemble the punch plate where the bush is glued.
  • Make sure that the punch plate slides smooth.
    Then the re-installation is complete.