34
Field of application
The zero gravity balancers of type 7251/7261 are used for
relieving – i.e. equalizing – the weight of hand-held tools
(such as welding tongs, hole gauges and micrometers,
slaughterhouse equipment, etc.).
General information
The weight-balancing retraction force remains almost con-
stant across the entire extension length of the cable. The
load range of the zero gravity balancers depends on the
model, as indicated on the rating plate (1).
System components
(1)
Rating plate
(2)
Safety suspension
(3)
Suspension clamping screw
(4)
Safety chain
(5)
Elastic cable stop buffer
(6)
Cable clamp (of buffer assembly)
(7)
Cable wedge (for cable length adjustment)
(8)
Ferrule (for securing the free cable end)
(9)
Endless screw (for load setting)
(10)
Drum lock (for locking the cable drum)
Safety instructions
●
No changes may be made on the zero gravity balancers
of type 7251 and 7261 or their accessories without the
express written permission of the manufacturer.
●
The safe use of these products is only ensured if you
have fully read these operating and safety instructions
and strictly observe them during work.
●
The balancer may only be operated, installed, serviced
and repaired by fully qualified personnel. These persons
must have been informed about the potential risks asso-
ciated with performing these tasks.
●
Hook or unhook the load only when the cable is fully
retracted.
●
The fixture(s) on which the zero gravity balancer and the
safety chain are installed must be sufficiently stable!
●
The balancer’s cable must be checked for potential dam-
age at regular intervals – at least once a year – by a com-
petent person (as required by DIN 15020, Part 2). Never
use a balancer when the cable is defective.
●
Never stand under a suspended load.
●
The suspension (complying with DIN 15405, Part 1), the
anti-crash safety device and the safety chain must be
monitored continuously. If damage or wear is detected,
withdraw the balancer from service at once.
●
Please note that the cable can easily get displaced from
its coupling if it is moved backwards, or snaps back, in
no-load condition during installation. An incorrectly
anchored cable can slip out under load and cause bodily
injuries or other damage due to the load crashing down!
●
Except for cable replacement (see Replacing the cable),
the spring tension must be fully released before perform-
ing any service or repair work. Disassembling the spring
housing is extremely dangerous and therefore strictly for-
bidden.
Operating Instructions
Zero Gravity Balancer Type 7251/Type 7261
Characteristic values of the system
ID number
Load range (kg)
Dead weight (kg)
Cable extension/
working range (m)
7251 0000 01
15.0 – 25.0
25.00
3.0
7251 0000 02
25.0 – 35.0
26.00
3.0
7251 0000 03
35.0 – 50.0
27.00
3.0
7251 0000 04
50.0 – 65.0
28.00
3.0
7251 0000 05
65.0 – 80.0
29.00
3.0
7251 0000 06
80.0 – 90.0
30.00
3.0
7251 0000 07
90.0 – 100.0
31.00
3.0
7251 0000 08
100.0 – 115.0
42.00
3.0
7251 0000 09
115.0 – 130.0
44.00
3.0
7251 0000 10
130.0 – 140.0
46.00
3.0
7251 0000 11
140.0 – 150.0
48.00
3.0
7251 0000 23
15.0 – 25.0
25.90
3.0
7251 0000 24
25.0 – 35.0
26.90
3.0
7251 0000 25
35.0 – 50.0
27.90
3.0
7251 0000 26
50.0 – 65.0
28.90
3.0
7261 0000 01
150.0 – 175.0
46.00
1.5
7261 0000 02
175.0 – 200.0
47.50
1.5
7261 0000 03
200.0 – 225.0
49.00
1.5
7261 0000 04
225.0 – 250.0
51.00
1.5
7261 0000 05
250.0 – 275.0
53.00
1.5
7261 0000 06
275.0 – 300.0
55.00
1.5
Содержание 7251
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