Clamps and clamping cylinders
Hydraulic clamps and clamping cylinders
with and without spring return
1 piston, dimension A = 69 mm – without spring return, Ø 25 x 2 mm stroke – max. 500 bar, as per data sheet B1.490
1 piston, dimension A = 83 mm – without spring return, Ø 25 x 2 mm stroke – max. 500 bar, as per data sheet B1.490
Flat clamp B1.8231
The flat clamp is a compact and flat clamping element with large clamping stroke. This clamp is designed for clamping of flat workpieces in fixtures on machine tools or for welding applications. It is well protected against coolant and swarf and resistant to welding spatter.
The flat clamp is a double-acting hydraulic clamping element where the piston acts via a con-rod onto a clamping lever. The clamping lever is completely retracted in unclamped mode.
Block clamp B1.8233
Hydraulic block clamps are particularly suitable for clamping of workpieces, that require a large free space for machining.
The block clamp with self-locking is preferably used on clamping pallets, that will be disconnected from the pressure generator after clamping. Block clamps are single and double-acting hydraulic cylinders.
The clamping bolt is supported by a ball bearing and can be swivelled.
During the linear extending stroke the clamping bolt with the contact bolt is moved above the clamping point and then swivelled onto the clamping point by means of a wedge drive.
Slide pivot clamps B1.8241 and B1.8242
In the case of the slide pivot clamp the piston force is deviated by 180° by the clamping lever and is available as clamping force with virtually no loss of efficiency. Kinematics of the slide pivot clamp allow sliding back of the clamping lever during unclamping for unimpeded insertion of the workpieces. Position of the clamping lever can be monitored by inductive proximity switches or pneumatic jets.
The slide pivot clamp has in relation to its base a very high clamping force. The clamps are particularly suitable for clamping tasks on machines with high performance and reduced space availability on the fixture.
Self-locking clamping and support elements B1.730
The clamping and support element is a hydraulic clamping cylinder with a mechanical locking according to the wedge principle.
Due to the self-locking design of the wedge principle the element has besides the clamping function also a supporting function. If the workpiece yields or the contact bolt digs deeper into the material due to machining forces or vibrations, the clamping and support element re-clamps provided that sufficient clamping pressure is available.
Low-block clamping cylinders B1.372
The preferred application of low-block clamping cylinders are clamping situations where workholding from above is not possible or necessary. The low-clamping effect is caused by the downward motion of the clamping point. The average horizontal force component is 94% and the vertical force component is approx. 34% of the nominal clamping force. The high vertical force guarantees that the workpieces are safely held down. The clamping lever is through hardened so that the shape of the clamping point can be adapted to the workpiece by regrinding.
Slideway locking cylinder B1.490
An economical solution to lock machine tool slideways is the direct locking method by means of hydraulic cylinders, powered from a central power system. Actuating controls of the various locking stations can be integrated with the machine tool control system.
Spring clamping cylinder B1.494
Especially suitable for long-term clamping of movable machine parts, tools, fixtures, pallets, and workpieces in any position.
Clamping mechanically by hydraulically adjustable Belleville spring assembly. Unclamping is made hydraulically.
PDF Data sheets
Low-block clamping cylinders single acting – with spring return – max. operating pressure 500 barCatalogue sheet B1.372
Slideway locking cylinders single acting – without spring return – max. operating pressure 500 barCatalogue sheet B1.490
Spring clamping cylinders pulling – with hydraulic return – max. operating pressure see unclamping pressure – h = 1 mmCatalogue sheet B1.494
Clamping and support elements self-locking – double acting – max. operating pressure 300 barCatalogue sheet B1.730
Flat clamps with optional position monitoring – double acting – max. operating pressure 500 barCatalogue sheet B1.8231
Block clamps versions without / with self-locking – double acting – max. operating pressure 70/100 barCatalogue sheet B1.8233
Slide pivot clamps with optional position monitoring – double acting – max. operating pressure 500 barCatalogue sheet B1.8241
Slide pivot clamps compact design – with optional position monitoring – double acting – max. operating pressure 350 barCatalogue sheet B1.8242
General characteristics of Hydraulic EquipmentCatalogue sheet A 0.100
Application example 1
Flat clamp B1.8231
Application example 2
Slide pivot clamp B1.8242
Application example 4
Clamping and support element B1.730
Application example 5
Low-block clamping cylinder B1.372