H-Type Production Press

Production Presses

Custom built H-frame double-column press with press force from 25 ton to 2000 ton.
The hydraulic production press is designed based on our customers' special needs and specifications and exclusively built from quality materials that guarantee high operational reliability and long service life. The H-type hydraulic press is made with five different optional guiding systems, two optional variable press speed versions and two optional control systems with up to 6 axes.
This high level of design flexibility ensures innovative press solutions and maximum customer satisfaction.

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Unique Features

Press force 25-2000 ton
Modular design
1-6 Axes
Guided column and flat guided presses
Fully programmable PLC
Stenhøj designed cylinder with extra long guides
Flexible location of power pack
Die cushion up to 1000 ton pressing force
Prepared for automation

Areas of Application

Hot Pressing
Cold Pressing
Deep Drawing
Assembly
Bending
Embossing
Forging
Grinding
Stamping
Compressing
Forming
Mounting
Straightening

Specifications

Pressing Speeds

Control System

The user friendly control system is built to meet latest European safety regulations.
In accordance with the safety regulations, the hydraulic system has dual monitored safety valves, monitored by a safety PLC.

The various press functions of the press are set directly on the control cabinet and displayed on the HMI touch panel.

Operator Panel 1, 2, 3 axes or more

Based on a Siemens or Allen Bradley PLC and a 9-, 12- or 15-inch touch panel.

The control consists of a freely programmable interface with up to 54 program lines to build a press program.
The user can use the program lines to control the axes of the press and 8 I/O's, dependent or independent of each other in a desired sequence.

The following features can be selected in each program line directly on the operator panel:

Signal exchange between individual axes and I/O
Position control, speed control and pressure setting.
Progressive or degressive pressure or speed regulation within a given press process.
Dwell time in bottom ram position (timer function)
Decompression time at ram return start (timer function)
Stroke- and working hour counter
Memory for 1 up to 500 programs.
Error message from the PLC

Operation modes, on lockable electric selector switch

Inching (tool setting)
Two-hand operation
Single & double break light guards
Foot operation (optional)
Automatic operation

Light Guard
Using a light guard during insertion work allows safe operation without having to activate the normal operating push buttons. This works in a single or double break operation
Additional protection function against unauthorised access.

Integration Options
Possibility of signal exchange with external equipment, such as feeder, robot or transfer system.

Hydraulic Power Pack

The hydraulic power pack is located at the rear top of the press and is easily accessible and service friendly.

All our pump systems are designed to fit each press size to achieve low energy consumption and avoid excessive heat in the hydraulic system.

Our power packs are equipped with a hydraulic pump for each cylinder axis. This ensures that the Main axis, Die cushion and Ejector can work independently at the same time.
To reduce unnecessary heat and energy consumption we operate with axial pumps which match the flow to the desired speed and are designed to avoid overload of the motor and clutch system by reducing the flow automatically when the press force increases and approaches max power.

The pumps are submerged directly into the oil tank, which provides low noise.

The valve system on the hydraulic tank is made up of compact block units protected against overload, placed on the hydraulic tank and designed as a hydraulic safety system in compliance with European safety requirements.

Electric motors are minimum IE3 premium efficiency rated.

Cylinders

Bed/table and Ram/slide

The well dimensioned bed- and ram plate is equipped with T-slots for clamping and support of the press tool.

We offer customised bed plates and ram plates dimensions with desired holes and T-slots

Ram plate guiding specifications
In addition to the high guiding accuracy of the cylinder and depending on the working task requirements, STENHØJ Hydraulik offers five guiding types for the Ram suitable for the pressing process.

Type 1 and 2: The Ram plate is guided by 2 or 4 columns through guides with self-lubricating bronze bushings from above. In order to ensure a stabilised construction, the columns are integrated into the Ram/slide plate.

Type 3 and 4: The Ram guide consists of four strong columns integrated in the frame leading the ram/slide plate through self-lubricated guides. The choice between a ram plate or a ram in a welded box depends on the tool width and the tool support requirements.

Type 5: The Ram/slide is a Box design and guided by means of eight (8) pieces 90° guide shoes equipped with replaceable PTFE compound inserts for minimum friction and long life. These gibs allow for extraordinarily high loads. Replaceable, hardened and grinded guide-ways are bolted onto the press frame.

Type 3-5 are commonly used when high accuracy and high guiding stability for long strokes and eccentric side load are required.

Ram/slide lock

H-type Guiding Systems

Ram Box with 8 Guided Gibs (PPK)

The ram plate is:

designed in a welded box construction
equipped with T-slots for tool clamping
machined according to DIN 650
guided by means of eight (8) pieces 90° adjustable guide shoes
equipped with replaceable Teflon compound inserts
Replaceable, hardened, and grinded guideways bolted onto the press frame.

Allowable off-centre load of 10% of max. press force

4 Integrated Column Guided Ram Box (PPSP)

The ram plate is:

designed in a welded box construction
equipped with T-slots for tool clamping
machined according to DIN 650
Through-guided by 4 ram columns and bushings, equipped with Teflon-based compounds

Allowable off-centre load of 7,5% of max. press force

4 Integrated Column Guided Ram Box (PPSP)

4 Integrated Column Guided Ram Plate (PPS)

The ram plate is:

designed in a strong solid steel block
equipped with T-slots for tool clamping
machined according to DIN 650
guided with 4 through-going columns and bushings equipped with Teflon-based compounds

Allowable off-centre load of 5% of max. press force.

4 Integrated Column Guided Ram Plate (PPS)

4 Column Guided Ram Plate (PP4)

The ram plate is:

designed in a strong solid steel block
equipped with T-slots for tool clamping
machined according to DIN 650
guided by 4 hard chromed steel columns, and 4 bronze bushings

Allowable off-centre load of 3% of max. press force

2 Column Guided Ram Plate (PP2)

The ram plate is:

• designed in a strong solid steel block
• equipped with T-slots for tool clamping
• machined according to DIN 650.
• guided by 2 pcs. hard chromed steel columns and 2 pcs. bronze bushings.

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Klaus Holgersen

Technical Sales Manager