Filter
Product range

Pneumatic swing clamps

pneumatic clamping elements with swing piston

for adjustable magnetic sensors

double acting

max. clamping force: 140 .. 1400 N
rod diameter: 8 .. 25 mm
piston diameter: 20 .. 63 mm
clamping stroke: 7 .. 18 mm
max. operating pressure 7 bar

Series Data sheet Technical data
J7.201
J7.201
show
J7.201 Pneumatic swing clamps

 

for adjustable magnetic sensors

double acting

max. operating pressure 7 bar

max. clamping force: 140 .. 1400 N
rod diameter: 8 .. 25 mm
piston diameter: 20 .. 63 mm
clamping stroke: 7 .. 18 mm
external thread: M30 .. M80

J7.202
J7.202
show
J7.202 Pneumatic swing clamps

 

block type

for adjustable magnetic sensors

double acting

max. operating pressure 7 bar

max. clamping force: 140 .. 1400 N
rod diameter: 8 .. 25 mm
piston diameter: 20 .. 63 mm
clamping stroke: 7 .. 18 mm

J7.203
J7.203
show
J7.203 Pneumatic swing clamps

 

top flange type

for adjustable magnetic sensors

double acting

max. operating pressure 7 bar

max. clamping force: 140 .. 1400 N
rod diameter: 8 .. 25 mm
piston diameter: 20 .. 63 mm
clamping stroke: 7 .. 18 mm
external thread: M40 .. M85

show
figure 1: application
 
show
figure 2: function













 
show
figure 3: swing direction

 
show
figure 4: threaded-body type J7.201
 
show
figure 5: block type J7.202 - air supply via connecting threads
 
show
figure 6: block type J7.202 - manifold mounting type B
 
show
figure 7: block type J7.202 - manifold mounting type K
 
show
figure 8: top flange type J7.203
 
show
figure 9: top flange type J7.203 - fixation with external thread
 
show
figure 10: top flange type J7.203 - fixation with collar nuts
 
show
figure 11: top flange type J7.203 - pneumatic connection by drilled channels
 
show
figure 12: J7.201 - position monitoring with magnetic sensors
 
show
figure 13: J7.202 - position monitoring with magnetic sensors
 
show
figure 14: J7.203 - position monitoring with magnetic sensors
 
show
figure 15: service unit to prepare the compressed air
 

Application (figure 1)
Pneumatic swing clamps are used for clamping of workpieces when it is essential to keep the clamping area free of straps and clamping components for unrestricted workpiece loading and unloading. Pneumatic swing clamps are used for applications which require only low clamping forces. The installed magnetic piston allows monitoring of clamping and unclamping position.

 



Function (figure 2)
A swing clamp is a pull-type cylinder where a part of the total stroke is used to swing the piston (swing stroke) and the screwed-on clamping arm.

Description
When pressurising the element, the clamping arm swings and lowers by 90° to the clamping position and then lowers to the clamping point.
The position monitoring gives the required information regarding the position of the piston, but not regarding the position of the clamping arm. Monitoring is made by electronic sensors (see accessory) which detect the magnetic field of the magnetic piston. The switching points can be continuously adjusted by displacement of the magnetic sensors.

Material
The swing clamps are supplied in corrosion resistant quality. Guide bushing, housing, piston, and flange are made of anodized aluminium. The piston rod is made of stainless steel.

Swing direction (figure 3)
90° swing angle, alternatively available with clockwise or counterclockwise swing motion.
"Swing direction cw" designates the clockwise rotation of the piston starting from the extended position (off-position). Accordingly, the "swing direction ccw" is a counterclockwise rotation.

Threaded-body type J 7.201 (figure 4)
On fixtures flange-type swing clamps (flange is an accessory) or threaded-body types with corresponding collar nuts can be easily adjusted to different workpiece heights.

 

 

 

 

 

 

Block type J7.202 (figure 5 – 7)
For fixing, the body is equipped with longitudinal and cross holes. Air supply can be effected via connecting threads (figure 5) or drilled channels at the bottom side (version B - figure 6) or at the broad side (version K - figure 7).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Top flange type J 7.203 (figure 8 – 11)
On fixtures flange-type swing clamps or threaded-body types with corresponding collar nuts can be easily adjusted to different workpiece heights. Air supply can be effected via connection threads or drilled channels at the bottom of the flange.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Position monitoring with magnetic sensors (figure 12 – 14)
A permanent magnet is fixed to the piston, and its magnetic field is detected by a magnetic electronic sensor.

Compared with traditional reed switches the electronic magnetic sensors offer the following advantages:

  • indifference to shock and vibration
  • bounce-free output signal
  • only one switching point
  • wear resistant
  • protection against reverse battery
  • protected against short circuits

Electrical connection is made as per traditional inductive proximity switches.
Up to four magnetic sensors can be connected in series.

Fixing of the magnetic sensors at the threaded-body type J7.201 is made by means of a hose clamp at the body of the swing clamp (figure 12). At the block type J7.202 (figure 13) and at the top flange type J7.203 they are fixed in the slots of the body.

 

 

 

 

 

 

 

 

 

 

Important notes
Operating of these pneumatic elements has to be effected with an additional service unit (figure 15) in order to guarantee that the clamping elements are supplied with correctly prepared compressed air.
In any case the swing motion must not be impeded.
When using special clamping arms with other lengths, the corresponding operating pressures as shown in the clamping force diagram must not be exceeded.

 

Application notes for
Magnetic sensors

data sheet G2.140

From the user - For the user 118

Clamping arm location
To locate clamping arms or clamps, normally a cone seat at the piston of the swing clamp is used.
The cone ratio is 1 to 10. This location is the same for all types of one size.

Operating pressure
The maximum admissible operating pressure is 7 bar.
The minimum admissible operating pressure is 3 bar.

Tolerance of the swing angle
is ±2°.

Dimension tolerances
Dimensions without tolerance data correspond to the general tolerances in accordance with DIN ISO 2768 -mH.

Swing clamps with magnetic sensors
A permanent magnet is fixed to the piston, and its magnetic field is detected by a magnetic electronic sensor.

While using magnetic sensors, you must heed the following:
see also: From the user - For the user 118

- Influencing the magnetic field by adjacent, magnetisable components (e.g. steel parts):
In order to guarantee perfect functioning, it is recommended to maintain a distance of at least 25 to 30 mm between magnetic sensor and magnetisable components. The function is indeed possible with a smaller distance but this depends highly on the individual circumstances for fitting. Thus ordinary steel bolts can also normally be used for fastening the cylinder. In borderline cases, screws of non-magnetisable steel (e.g. VA screws) can cause an improvement in the magnetic field.

Influencing the magnetic field by adjacent magnetic sensors
If several block cylinders with magnetic sensors are installed directly adjacent to one another, the magnetic sensors can have a reciprocal influence and malfunctions occur. A magnetisable steel sheet can help, placed between the block cylinders, i.e. magnetic sensors, as a shield.

- Demands on voltage supply
see data sheet G2.140

- Path and switching hysteresis of approx. 3 mm
This has to be considered already when adjusting the magnetic sensors. For static pistons, the magnetic sensor must always be pushed forward to the piston from the opposite direction.

show
figure 1: one-sided clamping arm with contact bolt
 
show
figure 2: clamping arm for special versions
 
show
figure 3: collar nut
 
show
figure 4: threaded flange
 
show
figure 5: magnetic sensors
 
show
figure 6: connecting cable with right angle plug
 

Clamping arms

  • One-sided clamping arm with contact bolt (figure 1)
  • Clamping arm for special versions (figure 2)

 

 

 

 

 

Flanged nut (figure 3)

 

 

 

 


Threaded flange (figure 4)

 

 


Magnetic sensors (figure 5) and
Connecting cable with right angle plug
(figure 6)

 

 

 

 

 

 

 

Pneumatic components

  • Plastic hose
  • Insertion nipple fitting
  • L-type insertion nipple fitting
  • Insertion nipple distributor
  • Hose connection, L-type 90°
  • Service unit

Pneumatic swing clamps J7.201
Bottom flange / threaded body

  • Bottom flange
  • Flanged nut
  • Threaded flange
  • Clamping arms
  • Contact bolts
  • Magnetic sensors with hose clamps
  • Connecting cable

see data sheet J7.201

Pneumatic swing clamps J7.202
Block type

  • Clamping arms
  • Contact bolts
  • Magnetic sensors
  • Connecting cable

see data sheet J7.202

Pneumatic swing clamps J7.203
Top flange / threaded body

  • Flanged nut
  • Clamping arms
  • Contact bolts
  • Magnetic sensors
  • Connecting cable

see data sheet J7.203