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Clamps and clamping cylinders

Hydraulic clamps and clamping cylinders

single acting

with and without spring return

double acting

max. clamping force: 5 .. 100 kN
clamping stroke: 2 .. 16 mm
max. operating pressure: 70 .. 500 bar

Series Data sheet Technical data
B1.8231
B1.8231
show
B1.8231 Flat clamps

 

with optional position monitoring

double acting

max. operating pressure 500 bar

max. clamping force: 12.3 .. 23.6 kN
clamping stroke: 9 .. 16 mm

B1.8233
B1.8233
show
B1.8233 Block clamps

 

versions without / with self-locking

double acting

max. operating pressure 70/100 bar

max. clamping force: 7.5 .. 18.5 kN
clamping stroke: 6 .. 8 mm

B1.8241
B1.8241
show
B1.8241 Slide pivot clamps

 

with optional position monitoring

double acting

max. operating pressure 500 bar

max. clamping force: 15 ..50 kN
clamping stroke: 7 ..9.5 mm

B1.8242
B1.8242
show
B1.8242 Slide pivot clamps

 

compact design

with optional position monitoring

double acting

max. operating pressure 350 bar

max. clamping force: 10 kN
clamping stroke: 5.5 mm

B1.730
B1.730
show
B1.730 Clamping and support elements

 

self-locking

double acting

max. operating pressure 300 bar

max. clamping force: 5 .. 18 kN
Stroke 5 .. 12 mm
diameter of the clamping bolt: 12 .. 22 mm

B1.372
B1.372
show
B1.372 Low-block clamping cylinders

 

single acting

with spring return

max. operating pressure 500 bar

max. clamping force: 8.5 .. 40 kN
stroke: 8 .. 10 mm

B1.711-3
B1.711-3
show
B1.711 Low-block clamping cylinders with locking piston

 

single acting

with spring return

max. operating pressure 500 bar

Low-block clamping cylinders
max. clamping force: 5 kN
max. retention force: 10 kN
max. load force 24.5 kN
piston diameter: 20 mm
stroke: 10 mm

B1.490
B1.490
show
B1.490 Slideway locking cylinders

 

single acting

without spring return

max. operating pressure 500 bar

max. locking force: 24.5 ..49 kN
piston stroke: 2 mm

B1.494
B1.494
show
B1.494 Spring clamping cylinders

 

pulling

with hydraulic return

max. operating pressure see unclamping pressure

h = 1 mm

max. clamping force: 16 ..100 kN
unclamping stroke: 0.5 and 1 mm
unclamping pressure: 210 .. 300 bar

show
figure 1: flat clamp B1.8231



 
show
figure 2: block clamp B1.8233



 
show
figure 4: slide pivot clamp B1.8241 and B1.8242
 
show
figure 5: self-locking clamping and support elements B1.730 and B1.7301
 
show
figure 7: low-block clamping cylinder B1.372 und B1.711








 
show
figure 8: slideway locking cylinder B1.490

 
show
figure 9: spring clamping cylinder B1.494
 

Flat clamp B1.8231 (figure 1)
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 (figure 2)
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 (figure 4)
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 (figure 5)
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 and B1.711 (figure 7)
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.
The low clamping block cylinder with locking piston B 1.711 is a single acting plunger cylinder. When pressurising the element, the piston will be expanded and locked in the cylinder body. The cylinder with locking piston does not only clamp the workpiece, but compensates also the machining forces which are up to five times higher and are directed against the clamping force.

Slideway locking cylinder B1.490 (figure 8)
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 (figure 9)
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.

 

Seal kits
for hydraulic elements

data sheet S0.001

Inductive proximity sensor
Pneumatic jet
Intermediate plates
Elastic connecting insert

for slide pivot clamps B1.8241
data sheet B1.8241 

Inductive proximity sensor
Pneumatic jet

for slide pivot clamps B1.8242
data sheet B1.8242

show
figure 1: flat clamp B1.8231
 
show
figure 2: slide pivot clamps B1.8242
 
show
figure 4: clamping and support elements B 1.730
 
show
figure 5: low-block clamping cylinder B1.372
 

Application example 1
Flat clamp B1.8231
(figure 1)

 

 

Application example 2
Slide pivot clamp B1.8242
(figure 2)

 

 

 

Application example 4
Clamping and support element B1.730 (figure 4)
Application example

 

Application example 5
Low-block clamping cylinder B1.372
(figure 5)