4 Technical data
EN
14
Manual hydraulic punch
4
Technical data
Tab. 1:
Technical data
5
Description
The
Manual hydraulic punch straight, Manual hydraulic punch 90°
and
Manual hydraulic punch flexible
are hand-operated hydraulic devices for
making holes of different shapes in soft to medium-strength steel, stainless steel
and aluminium sheets. Punch drivers are low-maintenance thanks to the closed
hydraulic circuit and enable you to work in any position.
The hand lever (item 6) and the stable handle (item 5) are designed on ergonomic
principles to ensure perfect handling of the punch driver. Working pressure in-
side the pump body (item 4) and the cylinder (item 2) is built up and released by
the drain screw (item 3). The drain screw (item 3) can be opened by turning it to
the left into the OFF position and closed by turning it to the right into the ON po-
sition. By pressing the hand lever (item 6) when the drain screw (item 3) is closed,
the necessary working pressure is built up, which pulls the load piston (A) in-
wards into the cylinder (item 2) with great force. The pressure is released
by opening the drain screw (item 3) and the load piston (A) is pushed back into
its starting position by means of an internal spring. The integrated excess pres-
sure valve limits the maximum attainable pressure within the device and protects
the hydraulic punch from excessive use and damage. Perfect punching results
are achieved using suitable tools. An overview of our range of quality round and
square punches can be found at www.rittal.de/ras.
6
Punching metal sheets
Gather together the appropriate tool set comprising a punch, punching die and
tension bolt. For best punching results we recommend using high-quality tools.
1. Mark the exact hole position for punching.
2. Now use a spiral or step drill to make the starting hole in the metal sheet.
Model No.
4055.000
Manual hydraulic punch
straight
4055.010
Manual hydraulic punch
90°
4055.020
Manual hydraulic punch
flexible
Max. punching force
75 kN/16800 lbs
Max. hydraulic pressure
680 bar/9850 psi
Hydraulic medium
HLP32 hydraulic oil
Piston stroke
18 mm/0.7"
Tool mounting
19 mm/3/4" –16 UNF
Weight
1.45 kg/3.15 lbs
1.75 kg/3.85 lbs
1.97 kg/4.33 lbs
Other functions
Excess pressure safety valve up to 680 bar/9850 psi
Note:
The position numbers refer to fig. 1, fig. 2 or fig. 3, depending on
the hydraulic punch type.
Caution!
Be sure to punch only one metal sheet at a time. Two or more
layers of material may not be processed during one punching
process.
