Peddinghaus punching machine Hydraulic 502
Punching Machine with Hydraulic Drive System

Technical Data
Punch Unit
| rated capacity | kN | 500 |
| stroke | mm | 32 |
| stroke, adjustable | mm | 10-32 |
| number of strokes, 10 mm | mm-1 | 35 |
| work height to die | mm | 1070 |
| fitting height | mm | 350 |
| throat depth | mm | 510 |
| width of flat die bolster | mm | 255 |
| punches with standard punching attachment | ||
| with flat die bolster | up to mm | Ø 31 in 12 |
| with universal die block: | ||
| channels in flange | mm | 100-300 |
| I-beams in flange | mm | 80-300 |
| channels in web | mm | 100-300 |
| I-beams in web | mm | 80-300 |
| punches with oversize punching attachment | ||
| o.p.a. 58 | up to mm | Ø 58 in 7 |
| o.p.a. 65 | up to mm | Ø 65 in 6 |
| o.p.a. 90 | up to mm | Ø 90 in 4 |
| o.p.a.130 | up to mm | Ø 130 in 3 |
Machine Data
| power rating | kW | 4 |
| charge of oil | l | 45 |
| net weight with oil | approx. kg | 1320 |
| overall machine dimensions | L × W × H cm | 108 × 65 × 168 |
| ref. no. | 42270 |
All performance data refers to a material strength of 450 N/mm². Subject to design changes.
Scope of Delivery
- quick-change punching attachment up to 31 mm Ø, for punches and dies of the green series
- flat die bolster or universal die block
- height-adjustable and push-away stripper with exchangeable plate
- hydraulic low pressure spotter for foot operation
- two-stage foot pedal and electric control elements
- intregrated hydraulic power pack
- three-phase A.C. motor, 400 Volt, 50 Hz
42270
All capacities refer to material with a tensile strength of 450 N/mm2. We reserve the right to make design alterations without notice.
Applications in steel construction
The Hydraulic 502 is a hydraulically driven punching machine for cold hole-making in flat, angle and structural steel. It produces round holes and, depending on the tooling, slotted holes directly in the workpiece, with no drilling and no heat input, making it well suited to preparing hole patterns in gusset plates, splice plates and connection parts in steel construction.
Typical applications
- Punching through-holes and bolt holes in flat steel and plate cleats
- Hole patterns in gusset plates and connection angles for bolted joints
- Punching angle steel in the web and flange area
- Preparing fastening and assembly holes in structural steel
- Series punching of identical parts using a stop for recurring hole spacings
Which businesses use it
Used in steel construction, metal fabrication, locksmith shops and steel trading for workshop-level hole preparation.
Frequently asked questions
What is a hydraulic punching machine used for in steel construction?
It produces holes cold in the workpiece by pressing a punch through the material into a die. In steel construction this is mainly used to set bolt holes in flat steel, cleats and gusset plates, without the need for drilling or flame cutting.
What is the difference between punching and drilling?
In punching the hole is created in a single stroke by shearing, whereas drilling removes material as chips. For suitable material thicknesses, punching is considerably faster per hole and produces no chips, but it depends on the available press force and the tooling fitted.
Which hole shapes are possible?
By changing the tooling, round holes in various diameters can be produced, and with the appropriate punch and die sets slotted holes as well. The tools actually available depend on the machine's equipment.





