View source for Hydraulic Shop Press

[[Category:Tools]][[Category:Metal Shop]]

Link to: [[:Category:Metal Shop | Metal Shop main page]]

Link to:  [[:Category:Metal Shop#Tools | Metal Shop tool list]]

{{ToolBox|tool_title=12-Ton Shop Press|image=SW_3_BracketRE_16_press.png|caption=Shop press for bending|location=Metal Shop|training=[https://www.artisansasylum.com/class-catalog Tool classes]|
testing=[https://www.artisansasylum.com/tool-testing Tool testing], or [[:Category:Metal Shop#Tool Testing Night|come to the shop on Tool Testing Night]]|restrictions=green|make=Duralast|model=12-ton|
serial=Unknown|manufacturer_specs=n/a|manual=n/a|rubric=n/a|tool_categories=}}

= Description =

{| class="infobox" cellspacing="5" style="width: 2em; text-align: left; font-size: 100%; line-height: 1.5em;"
! colspan="2" class="infobox-image" | [[File:Metal_shop_press_pressure_relief.png|150px|pressure_relief]]
|-
| colspan="2" | Pressure relief
|-
|}

This is a 12-ton hydraulic "bottle" jack mounted to a steel frame so it can be used as a press.  The pressure relief valve is located on the press base.  This machine is generally used for bending sheets and bars, and it usually has a 4" wide right-angle bending tool and die set mounted.  The opening in the frame is 16" wide.

== Use for: ==
* Bending steel sheets and bars up to 1/8" thick

== Do not use for: ==
* High-carbon or Hardened steel
* Round or square stock

== Safety Hazards ==

{{EyeWarning}}

* Workpiece can unexpectedly snap

* Pinching injuries

* Cuts/scrapes from sharp edges and burrs

=Tooling=

{| class="infobox" cellspacing="5" style="width: 2em; text-align: left; font-size: 100%; line-height: 1.5em;"
! colspan="2" class="infobox-image" | [[File:Metal_shop_press_bending_tool_removal.png|190px|dead_blow]]
|-
| colspan="2" | Removing the tool with a "dead-blow" hammer.
|}

{| class="infobox" cellspacing="5" style="width: 2em; text-align: left; font-size: 100%; line-height: 1.5em;"
! colspan="2" class="infobox-image" | [[File:Metal_shop_press_bending_tool_longitudinal.png|200px|bender_longit]]
|-
| colspan="2" | Longitudinal bending tool.
|}

{| class="infobox" cellspacing="5" style="width: 2em; text-align: left; font-size: 100%; line-height: 1.5em;"
! colspan="2" class="infobox-image" | [[File:Metal_shop_press_bending_tool_transverse.png|210px|bender_transv]]
|-
| colspan="2" | Transverse bending tool.
|-
|}

The bending tool is press-fit onto the ram below the bottle jack.  It can be positioned at any angle, but the two most useful orientations are shown here: longitudinal and transverse.

To remove the tool, hit it with a "dead-blow" hammer with a soft head until it lossens up and comes off.  Reposition, and press it onto the ram using the press.

=Bending=

* Mark your workpiece with a clearly visible line.

* Insert the workpiece into the jig and lower the workpiece so it lightly loads.

* Square the workpiece in the tool.

* Pump up the pressure to bend the workpiece.

* Check the angle with a square as the bend approaches 90°.  If you squeeze too far, the bend can surpass 90°.

{| class="infobox" cellspacing="5" style="width: 2em; text-align: left; font-size: 100%; line-height: 1.5em;"
! colspan="2" class="infobox-image" | [[File:bending_a_piece.png170px|bending]]
|-
| colspan="2" | Bend
|-
|}

{| class="infobox" cellspacing="5" style="width: 2em; text-align: left; font-size: 100%; line-height: 1.5em;"
! colspan="2" class="infobox-image" | [[File:squaring_a_piece.png|220px|squaring]]
|-
| colspan="2" | Square
|-
|}

{| class="infobox" cellspacing="5" style="width: 2em; text-align: left; font-size: 100%; line-height: 1.5em;"
! colspan="2" class="infobox-image" | [[File:marking_a_piece.png|210px|marking]]
|-
| colspan="2" | Mark
|-
|}