Hydraulic Shop Press

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12-Ton Shop Press
Shop press for bending
General Info
Make	Duralast
Model	12-ton
Serial	Unknown
Specs	n/a
Manual	n/a
Asylum Info
Location	Metal Shop
Rubric	n/a
Training	Tool classes
Testing	Tool testing, or come to the shop on Tool Testing Night
Restrictions	green

Description

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

		Eye protection required!

• Workpiece can unexpectedly snap

• Pinching injuries

• Cuts/scrapes from sharp edges and burrs

Tooling

Removing the tool with a "dead-blow" hammer.

Longitudinal bending tool.

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.

Bend

Square

Mark

• 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°.