Installation Space; Height Stops; Angle Of Tilt Α And Axial Offset; Load Capacity - Emerson Aventics BCC Instrucciones De Servicio

5. Insert the threaded bolts through the holes in the mounting plates, turn the
supplied nuts onto the threaded bolts, and tighten them crosswise.
Tightening torque: see Tab. 1.
If the nuts are tightened sufficiently, the covers are applied correctly and seal off
the bellows.

5.2 Installation space

See Fig. 3
There should be no abrasion between the walls of the bellows.
Ensure that the installation location provides adequate space to accommo-
u
date the change in bellows diameter along the entire stroke.

5.3 Height stops

See Fig. 4
Risk of injury during air pressure filling!
Bellow actuators must be equipped with a height limitation at the ends of the
stroke. The bellow actuators are not designed for forces resulting from pres-
sure loads in the absence of load or height stops.
1. Fill the bellows actuator with compressed air only when installed.
2. Observe the stop heights Hmin and Hmax.
5.4 Angle of tilt α and axial offset
See Fig. 5 and 6a
H = minimum height H = maximum height
min max
Danger of explosion if installed at an angle of tilt!
Bellows actuators with material numbers R412010151, R412025918,
R474000118 may explode and will wear quickly if they are installed with an an-
gle of tilt.
Never install these bellows actuators with an angle of tilt!
u
Angle of tilt α
Single bellows α max. 10° ... 20°
Double bellows α max. 15° ... 25°
R412010151 α 0°
R412025918
R474000118
α max. 15° ... 30°
Triple bellows
BRB rolling bellows α max. 15°

5.5 Load capacity

See Fig. 6b
d = effective diameter F = force
w
The height at the center of the plate, H
(see Fig. 5).
The effective diameter d changes with the operating height. Depending on the
w
type and size, bellow actuators decrease in load capacity as the stroke increases.
When dimensioning using the force-displacement diagram, check if the bel-
u
lows actuator in question exerts the required force at both ends of the in-
tended stroke and what pressure is required for this.
For information see the online catalog.

6 Maintaining

Bellow actuators with permanent air supply do not require maintenance.
For bellows actuators without permanent air supply, check air pressure at regular
intervals and correct if necessary.
Bellow actuators are wear parts. A worn bellows cannot be repaired.
1. Regularly perform a visual inspection.
AVENTICS™ BCC, BCP, BCR, BRB | R412011151-BAL-001-AH | English
CAUTION
H = height of center of the
DM
plate
DANGER
Axial offset
Max. 10 mm
Max. 20 mm
Max. 20 mm
Max. 30 mm
Max. 10 mm
S = stroke
, is decisive in determining the force
DM
2. Exchange the bellow actuators as soon as you detect external damage.

6.1 Exchanging the bellows (BCC)

See Fig. 1a and b
1. Switch all relevant system parts without pressure.
2. Loosen the banjo connections and remove both covers.
3. Use a lever to remove the mounting rings from the bellows.
NOTICE: The lever must not have any sharp edges that can damage the bellow.
1. Check the connectors for damage before reinstalling them. Replace any dam-
aged parts.
2. Use the lever to fit the mounting rings on the new bellows.
NOTICE: Make sure that the mounting ring bolts are aligned at the opposite ends.
1. Before assembly, moisten the openings of the bellows actuator and the rims
of the covers with soapy water (see Fig. 2).
2. Mount and tighten both covers.
3. Using a torque wrench, gradually tighten the connections crosswise (see tab.
1).

7 Technical data

General data
Storage
Pneumatics
Medium
Operating pressure

8 Tables and figures

Table 1: Tightening torque [Nm]
BCC
M6 5
M8 12
M10 25
M12
M16
M30 x 1.5
G1/8
G1/4 15
G3/8 15
G1/2 25
G3/4
G1
In dark, dry locations at normal room tem-
perature (DIN 7716)
Compressed air acc. to ISO 8573-1:2010:
Max. particle size 5 μm,
Medium dew point ≤ 3°C
Oil content of compressed air 0 mg/m
3
mg/m
Nitrogen
Water (also with glycol) for air springs with
corrosion-resistant metal parts
Gases:
BCC, BCP, BCR: 0 ... 8 bar
BRB: 0.9 ... 8 bar
Water: low pressure range (max. 3 ‧bar)
BCP BCR
25 25
40
75
70 - 100
25
25
50
50
3
... 5
BRB
3 - 5
11 - 14
40
Finger-tight plus
one turn
10
8