Clamps and clamping cylinders

Hydraulic clamps and clamping cylinders

single acting
with and without spring return
double acting

Series  (8)

Items  (30)

  1. Ø 16 x 8 mm stroke – 500 bar, see page B1.372
  2. Ø 25 x 10 mm stroke – 500 bar, see page B1.372
  3. Ø 36 x 10 mm stroke – 500 bar, see page B1.372
  4. 16 kN, set pressure 165 bar – 270 bar, as per data sheet B1.494
  5. 25 kN, set pressure 165 bar – 250 bar, as per data sheet B1.494
  6. 40 kN, set pressure 185 bar – 250 bar, as per data sheet B1.494
  7. 63 kN, set pressure 215 bar – 270 bar, as per data sheet B1.494
  8. 100 kN, set pressure 250 bar – 320 bar, as per data sheet B1.494
  9. 1 piston, dimension A = 69 mm – without spring return, Ø 25 x 2 mm stroke – max. 500 bar, as per data sheet B1.490
  10. 1 piston, dimension A = 83 mm – without spring return, Ø 25 x 2 mm stroke – max. 500 bar, as per data sheet B1.490
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Description

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.

flat clamp B1.8231

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.

block clamp B1.8233

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. 

slide pivot clamp B1.8241 and B1.8242

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.

self-locking clamping and support elements B1.730 and B1.7301

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.

low-block clamping cylinder B1.372 und B1.711

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.

slideway locking cylinder B1.490

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.

spring clamping cylinder B1.494

PDF Data sheets

PDF

Low-block clamping cylinders single acting – with spring return – max. operating pressure 500 bar

Catalogue sheet B1.372
PDF

Slideway locking cylinders single acting – without spring return – max. operating pressure 500 bar

Catalogue sheet B1.490
PDF

Spring clamping cylinders pulling – with hydraulic return – max. operating pressure see unclamping pressure – h = 1 mm

Catalogue sheet B1.494
PDF

Clamping and support elements self-locking – double acting – max. operating pressure 300 bar

Catalogue sheet B1.730
PDF

Flat clamps with optional position monitoring – double acting – max. operating pressure 500 bar

Catalogue sheet B1.8231
PDF

Block clamps versions without / with self-locking – double acting – max. operating pressure 70/100 bar

Catalogue sheet B1.8233
PDF

Slide pivot clamps with optional position monitoring – double acting – max. operating pressure 500 bar

Catalogue sheet B1.8241
PDF

Slide pivot clamps compact design – with optional position monitoring – double acting – max. operating pressure 350 bar

Catalogue sheet B1.8242

Application examples

Application example 1

Flat clamp B1.8231

flat clamp B1.8231

Application example 2

Slide pivot clamp B1.8242

Slide pivot clamp B1.8242

Application example 4

Clamping and support element B1.730
Application example

clamping and support elements B 1.730

Application example 5

Low-block clamping cylinder B1.372

low-block clamping cylinder B1.372