Hydraulic presses for metal forming and production
Hydraulic presses shape and join metal with pressure instead of cutting chips. Unlike mechanical designs, the full force is there right through the stroke. Stroke and final pressure are adjustable, so the machine copes with changing parts and works reliably on a repeat job. KNUTH lists hydraulic presses for production and special applications in two frame designs.
Press designs: C-frame and portal presses
The frame sets the access, the stiffness and the force range:
- C-frame presses: open on three sides, so bulky parts load from the side and changeover is quick. The design suits joining and assembly work with frequent part changes.
- Portal presses in a four-column frame: a rigid closed frame, often called the H-type. It takes higher loads, deflects less under load and guides the ram precisely. That matters on demanding forming and joining work.
Press force, stroke and throat width of the machines currently available appear in the product cards above.
How a hydraulic press works
A hydraulic press works on Pascal's principle. A pump builds pressure in a hydraulic fluid, the pressure acts evenly on the ram in the hydraulic cylinder and becomes a high press force. Because the pressure holds steady, the force is there right through the stroke, not only near the bottom. A pressure gauge shows the applied pressure, adjustable end stops keep the results the same across a run, and safety devices protect the operator and the tooling. A hydraulic press is slower than a mechanical one, but stronger and easier to meter finely.
Applications and industries
With the matching tooling a hydraulic press takes on a wide range of work:
- Pressing in and out bearings, bushes, silent blocks and pins
- Coining and punching with matching punch and die tooling
- Deep drawing and forming plate and metal parts
- Straightening bent shafts, axles and sections
- Joining and assembly with a steady press force across the run
Typical fields are mining, oil and gas, heavy engineering and rail, plus general fabrication and fitting shops. Plate in full sheet format goes on a press brake instead, not on a hydraulic press.
Control and automation
KNUTH hydraulic presses work automatically and are PLC-controlled, among others with a Siemens control. The operating panel sets the sequence, force and position and recalls them repeatably. That takes strain off the operator, shortens the cycle where the same job repeats and keeps the results the same across the run. On one repeating part, the automatic sequence is the decisive advantage over a hand-operated press.
Hydraulic presses for special applications
Not every job fits a standard machine. For different forces, sizes, tooling or sequences we work out the right configuration with you. Send us the part, the process and the quantity, and our specialists suggest the design, the size and the equipment. That way we also cover industrial production and special applications a standard press cannot handle.
Choosing the right hydraulic press and what drives the cost
Three figures let you compare machines. Press force is matched to the heaviest job, not the most frequent one, and it moves the price more than anything else because frame, cylinder and pump all scale with it. The stroke sets how far the ram travels and how tall the part may be. The throat width limits what fits between the uprights. Tooling is the item most often forgotten, and landed cost in South Africa also carries freight, duties and commissioning. Machines are quality-tested in Germany against European testing standards, and the documentation is available on request. We put all of it into one quotation. Pricing is on request.
Press tooling and accessories
The tooling decides how much a hydraulic press can actually do:
- Press mandrels in stepped diameters for bushes, bearings and pins
- Pressure and support plates to spread the load on thin parts
- Punch and die tooling for repeat coining and punching
- V-blocks and prisms that carry round stock while it is straightened
Which tooling you need depends on your parts. We go through that with you. The full range is under machine accessories.
Why KNUTH
KNUTH supplies machine tools across Sub-Saharan Africa and selects its press range itself. Machines are quality-tested in Germany against European testing standards, and the documentation is available on request. You get personal advice rather than a catalogue page, with matching accessories from the same source. Alongside the hydraulic presses, KNUTH also lists workshop presses for maintenance and assembly; the presses category gives an overview of both designs.
Service and spare parts in Sub-Saharan Africa
Service runs through local partners, with the regional base in Germiston near Johannesburg. Commissioning and operator training are available as a separate service item. Spare parts carry a supply guarantee of ten years. Press mandrels, V-blocks and other equipment are listed under machine accessories. See start-up services and repairs and spare parts. For a quotation on your hydraulic press, use the contact form.
Further Machine Categories at a Glance
Here is an overview of our machine range. Select a category to learn more about individual machines and their technical data.
