Gas spring GF 10/22 - AL-KO

22
Connecting parts
and accessories
These pages give a summary
of our extensive range
of high-quality mounting
fittings which provide
optimum connections.
28
Expertise
In this area you can find
details about the possibilities
for custom-made
products, developments
from aeronautical engineering,
and details about
wheel shock absorbers and
overrun brake buffers.
34
Installation
instructions
We will give you important
instructions to ensure that
your gas spring operates
in the best way possible.
3

The company
AL-KO damping technology – nothing is too much trouble
We provide
... creative minds, that develop
innovative products to meet your needs
in a skilled and professional manner
... experienced hands, which have a good
command of the technologies involved, and
produce quality products
... likeable employees, who are there for you
and will be happy to help you in your product
selection
Send us your drawing and we will
design and produce gas springs for you that
are tailored to meet your individual needs!
4 AL-KO Gas spring range
Your contact
AL-KO Dämpfungstechnik GmbH
Bahnhofstr. 2-4
04746 Hartha - Germany
Fon: +49 (0)34328 67 0
Fax: +49 (0)34328 67 226
info.hartha@al-ko.de
www.al-ko.de

AL-KO
Our products
■ are easy and safe solutions to be used for
moving heavy components
■ meet the highest quality requirements,
therefore ensuring a long service life
■ provide increased safety for the machine
operating staff
■ are technically functional and aesthetical
■ reduce the maintenance and repair times to
your plant and machinery
Company
55

Product summary
Gas springs
Spring characteristic curve x = F 2 / F 1
■ Insertion force: an
external force is
greater than the force
of the gas spring
Basic type
ø Diameter
piston rod/
cylinder in mm
GF 6/15
GF 8/19
GF 10/22
GF 10/28
GF 14/28
F R max
( N )
40
60
60
60
100
x = F 2 / F 1
( ≈ )
6 AL-KO Gas spring range
■ Extension force:
the external force is
smaller than the force
of the gas spring
1.4
1.4
1.4
1.2
1.4
Stroke C
5 5
0
F 1
Extension force
F R
■ Frictional force: the difference
between the insertion
and extension forces is
the result of the frictional
force FR.
F 2 F 4
F 3
Insertion force
Force F (N)
Connecting
part
Cylinder pipe
Coating:
epoxy resin
lacquer
Piston rod
nitrided
black/silver
Connecting part

Basic type
ø Diameter piston rod/
cylinder in mm
Non-lockable
GF 6/15
GF 8/19
GF 10/22
GF 10/28
GF 14/28
OPTI LIFT
(Non-lockable)
GFBa 14
GFBb 14
Lockable
G 10/28
Explanation
Different extension speeds can be achieved
■ The best solution for moving and/or balancing
loads
■ Absorb movements and therefore reduce
the maintenance and repair times of your
machinery
■ One side of the gas spring is secured onto a
roll so that its position changes according to
the angle of the flap ➭ equal expenditure of
energy for opening and closing
■ Has all the advantages of a non-blockable
gas spring with the additional possibility of
being able to locate a load in any position
Stroke C
(in mm)
50 ... 200
60 ... 300
60 ... 425
60 ... 425
50 ... 500
45 ... 300
Extension
force F 1 (N)
20 ... 350
80 ... 700
100 ... 1250
100 ... 1250
200 ... 2500
400 ... 1100
400 ... 1500
200 ... 900
Page
8
10
12
14
16
18
18
20
7

Extended length E ± 2
Gas spring GF 6/15
Stroke C
∅ 15
∅ 6
M 5
6
8 AL-KO Gas spring range
6 thick
Stroke
(mm)
∅ 6.1
50
75
100
125
150
175
200
9
16
Extended
length (mm)
134
184
234
284
334
384
434
20
10
5
∅ 5
Order
number
280 452
280 453
280 454
280 455
280 456
280 457
280 458
Special solutions available on request
22
9 10
M 5
SW 7
18
■ Extension force F 1
20 - 350 N
■ Extension speed
0.2 - 0.4 ms -1
11 12
SW 8
M 6
■ Length of the shock absorbing
action 20 ± 10 mm
■ Admissible load in the
direction of traction: ≤ 2000 N
with plastic ball socket: ≤ 1500 N

Product solutions
9 AL-KO Gas spring range 9
AL-KO

Extended length E ± 2
Gas spring GF 8/19
Stroke C
∅ 19
∅ 8
M 6
8
10 AL-KO Gas spring range
10 thick
∅ 8.1
Stroke
(mm)
75
100
125
150
175
200
225
250
300
16
Extended
length (mm)
203
253
303
353
403
453
503
553
653
24
12
6
∅ 6
Order
number
280 000
280 001
280 002
280 003
283 683
280 004
282 823
280 005
280 006
Special solutions available on request
25
13.5 13
SW 8
M 8
18
■ Extension force F 1
80 - 700 N
■ Extension speed
0.1 - 0.3 ms -1
13.5 13
SW 13
M 8
■ Length of the shock absorbing
action 20 ± 10 mm
■ Admissible load in the
direction of traction: ≤ 3000 N
with plastic ball socket: ≤ 1500 N

Product solutions
11 AL-KO Gas spring range 11
AL-KO

Extended length E ± 2
Gas spring GF 10/22
Stroke C
∅ 22
∅ 10
M 8
10
12 AL-KO Gas spring range
10 thick
∅ 8.1
Stroke
(mm)
75
100
125
150
175
200
250
250
300
350
400
16
Extended
length (mm)
210
260
310
360
410
460
560
610
660
760
860
32
16
Order
number
280 007
280 008
280 009
280 010
283 595
280 011
280 012
282 950
280 013
280 775
280 778
Special solutions available on request
8
∅ 8
30
13 16
SW 11
M 8
18
■ Extension force F 1
100 - 1250 N
■ Extension speed
0.1 - 0.3 ms -1
13.5 13
SW 13
M 8
■ Length of the shock absorbing
action 20 ± 10 mm
■ Admissible load in the
direction of traction: ≤ 3000 N
with plastic ball socket: ≤ 1500 N

Product solutions
13 AL-KO Gas spring range 13
AL-KO

Extended length E ± 2
Gas spring GF 10/28
Stroke C
∅ 28
∅ 10
M 8
10
14 AL-KO Gas spring range
10 thick
∅ 8.1
Stroke
(mm)
75
100
125
150
200
250
300
350
400
16
Extended
length (mm)
210
260
310
360
460
560
660
760
860
32
16
8
∅ 8
Order
number
280 728
280 729
280 730
280 731
280 732
280 727
280 733
281 739
281 740
Special solutions available on request
30
13 16
SW 11
M 8
18
■ Extension force F 1
100 - 1250 N
■ Extension speed
0.1 - 0.3 ms -1
13.5 13
SW 13
M 8
■ Length of the shock absorbing
action 20 ± 10 mm
■ Admissible load in the
direction of traction: ≤ 3000 N
with plastic ball socket: ≤ 1500 N

Product solutions
15 AL-KO Gas spring range 15
AL-KO

Extended length E ± 2
Gas spring GF 14/28
Stroke C
∅ 28
∅ 14
M 10
9.5
16 AL-KO Gas spring range
Stroke
(mm)
100
150
200
250
275
300
300
350
400
400
450
500
12 thick
∅ 8.1
Extended
length (mm)
268
368
468
568
618
668
718
768
868
918
968
1068
16
Order
number
280 694
280 711
280 493
280 494
280 749
280 495
282 967
280 496
280 497
283 577
280 498
280 499
Special solutions available on request
40
20
10
∅ 10
■ Extension force F 1
200 - 2500 N
■ Extension speed
0.1 - 0.3 ms -1
35
16 20
SW 13
■ Length of the shock absorbing
action 20 ± 10 mm
■ Admissible load in the
direction of traction: ≤ 5000 N
M 10

Product solutions
17 AL-KO Gas spring range
AL-KO
17

Gas spring OPTI LIFT
d
Close
18 AL-KO Gas spring range
One side of the gas spring is secured onto a
roll so that its position changes according to
the angle of the flap.
u
F1
a
90
Blocking support
Type
GFBa 14
GFBb 14
Gas spring
F 1 (N)
400 - 1100
400 - 1500
G Open
Web guide
α
d (mm)
809
1100
The energy expenditures required for
opening and closing are equally as low as
each other due to the constant optimum
adjustment position.
Advantages:
■ Easy movement of large and heavy flaps
■ Particularly even travel with constantly
low expenditure of energy
Extension force F 1 :
F 1 = G · a · k
G: Flap weight (kg)
a: Balance point distance (mm)
k: Calculation constants according to table
when using two gas springs per flap
u (mm)
193
251
k
0.02025
0.01660
Our employees carry out calculation and design; special solutions available on request
∙ max (°)
86
86

Force in N
Force in N
Product solutions
19 AL-KO Gas spring range 19
AL-KO
150
100
50
0
-50
-100
-150
150
100
50
0
-50
-100
-150
Handling load path - standard gas spring
0 6 12 18 25 31 37 43 49 55 61 68 74 80 86
Opening in °
Handling load path OPTILIFT
0 6 12 18 25 31 37 43 49 55 61 68 74 80 86
Opening in °

Extended length E ± 2
16.5
Gas spring G 10/28
lockable, fixed
Stroke C
∅ 4
∅ 28
∅ 10
M 10 x 1
6 ± 1,5
M 10
20 AL-KO Gas spring range
9.5
Stroke
(mm)
45
60
90
120
150
180
210
240
270
300
12 thick
* without mounting fittings
∅ 8.1
Extended
length* (mm)
197.5
242.5
322.5
392.5
462.5
532.5
602.5
672.5
742.5
783.5
16
Order
number
1217982
1217983
1218151
1218152
1218153
1218154
1218155
1218156
1218157
1218158
Special solutions available on request
40
20
10
∅ 10
■ Extension force F 1
200 N bis 900 N
35
■ Entire stroke hydraulically
absorbed
■ Permissible load in
insertion direction: 5 x F 1
extension direction: ≤ 3000 N
■ Deblocking force
≤ 200 N with a deblocking
distance of 3,5 mm
16 20
SW 13
M 10

Product solutions 21 AL-KO Gas spring range
21
AL-KO

Connecting parts and accessories
Provide the best connection
22 AL-KO Gas spring range
The gas springs can only move loads safely if
they have been attached securely and in the
optimum positions. To ensure that this is the
case we have an extensive range of high quality
mounting fittings and accessories to suit
a variety of applications. The following pages
define the technical details for the dimensions
of these parts.
Please feel free to contact us if you have any
questions. Our team shall be pleased to help
you select the appropriate connectors.
We look forward to hearing from you.

Connecting parts
23 AL-KO Gas spring range
AL-KO
23

Connecting parts
Overview
24 AL-KO Gas spring range
Milled eye a b c d e f
Eye 6.1-6x16 M5 6.1 16 6 M5 10 9
Eye 8.1-5x28 M6 8.1 28 5 M6 15 13
Eye 10.1-5x28 M6 10.1 28 5 M6 15 13
Eye 8.1-5x28 M8 8.1 28 5 M8 15 13
Eye 8.1-10x30 M10 8.1 30 10 M10 18 16
Eyes 10.1-10x30 M10 10.1 30 10 M10 18 16
Moulded eye a b c d e
Eye 8.1-10x16 M6 8.1 16 10 M6 19
Eye 8.1-10x23.5 M6 8.1 23.5 10 M6 15
Eye 8.1-10x16 M8 8.1 16 10 M8 19
Eye 10.1-10x16 M8 10.1 16 10 M8 19
Eye 8.1-12x16 M10 8.1 16 12 M10 19
Eye 10.1-12x16 M10 10.1 16 12 M10 19
Eye 12.1-12x16 M10 12.1 16 12 M10 19
Clevis a b c d e
G 5x10-M5 5 20 5 M5 10
G 6x12-M6 6 24 6 M6 12
G 8x16-M8 8 32 8 M8 16
G 6x16-M8 6 32 8 M8 16
G 10x20-M10 10 40 10 M10 20
G 8x16-M10 8 32 8 M10 16
Distance piece a b c d
M8x34 M8 34 12 M8
M8x58 M8 58 12 M8
M10x22 M10 22 16 M10
M10x50 M10 50 16 M10
Thickness
c
Thickness
c
b
a
e
∅ c
e
a
d
e
a
d
c
d
b
f
a
b
b
d

c
c
c
c
a
d
b
d
d
f b
sw
f b
f b
l
sw
sw
a
a
a
Hinged joint CS a b c d e f sw
WG CS 8x22-M5/M5 M5 10 22 M5 8 9 7
WG CS 10x25-M6/M6 M6 12 25 M6 10 11 8
WG CS 10x25-M6/M8 M8 13 25 M6 10 13.5 13
WG CS 10x19-M6/M8 M8 13 19 M6 10 13.5 13
WG CS 13x30-M8/M8 M8 16 30 M8 13 13 11
WG CS 13x30-M8/M10 M10 20 30 M8 13 13 17
WG CS 16x35-M10/M10 M10 20 35 M10 16 16 13
Hinged joint S a b c d e f sw
WG S 10x19-M5/M6 M6 12 19 M5 10 11 8
WG S 10x19-M5/M8 M8 13 19 M5 10 13.5 13
WG S 10x19-M6/M8 M8 13 19 M6 10 13.5 8
WG S 10x25-M6/M8 M8 23 25 M6 10 13.5 13
WG S 10x19-M8/M8 M8 13 19 M8 10 13.5 13
WG S 10x19-M8/M6 M6 13 19 M8 10 13.5 8
Plastic hinged joint a b c d e f sw
PWG S 10x18-M5/M6 M5 12 18 M6 10 11 8
PWG S 10x18-M6/M6 M6 12 18 M6 10 11 8
PWG S 10x18-M8/M8 M8 13 18 M8 10 13.5 13
Blocking supports
a b c l
Galvanised steel 8.5 15.5 18.5 100 to 500 mm stroke
25

∅ a
g f
sw
l
d
a
a
c
f
b
d
e
e
b
Steel protection pipe a l
GF8 24 from 75 mm to 300 mm stroke
GF10 27.5 from 75 mm to 400 mm stroke
GF14 34.6 from 100 mm to 500 mm stroke
Bearing bracket a b c d e f g
8x15 8 24 15 4.3 45 14 17
6x6 6 24 6 4.3 45 14 17
8x6 8 24 6 4.3 45 14 17
Cap bearing bolt a b sw d e f
Cap bearing bolt 8 19 14 M8 39 12
27

Expertise
Custom-made gas springs
Complete solutions
■ Development of complete solutions
for your special applications
■ Delivery of ready-to-install gas
springs with fittings and assembly
parts
28 AL-KO Gas spring range
Individually designed
Individually designed according to your
requirements
■ Printed with your company name
■ In different colours
■ In your desired size and extension
force
Highest corrosion specification
■ Specially produced for use under
extreme challenging conditions, for
example in sand, salt, dust etc.
■ Salt spray tested to guarantee the
best possible corrosion resistance

Expertise
29 AL-KO Gas spring range 29
AL-KO

Expertise
Dampers from aeronautical engineering
AL-KO LOK: Seat adjustment in aeroplanes
MSA: Secure closing of bins to improve fire prevention
30 AL-KO Gas spring range
RATE CONTROL: For easy opening of overhead lockers

The dampers have numerous possible
applications. We use our experience
in the area of aeronautical engineering
to develop product solutions for your
specific needs.
Expertise
31 AL-KO Gas spring range 31
AL-KO

Expertise
Wheel shock absorbers and overrun brake buffers
Hydraulic double-pipe telescopic shock absorbers
■ Absorb wheel vibrations in
vehicles with mechanical and
pneumatic suspension
■ Suitable for transporters and car
trailers up to 3.5 tonnes
Hydro-pneumatic single-pipe dampers
■ Absorb overrun movements of
braked single-axle and tandem
trailers up to a total weight of 3.5
tonnes
■ Stabilise the driving and braking
performance, and therefore increase
safety
32 AL-KO Gas spring range
■ Available with a large selection of
fastening fittings
■ Meet the requirements of guideline
EC 71/320 EEC Appendix VIII
■ Are maintenance-free up until the
stated use limit period

Overview of the AL-KO overrun buffer range
Type
E 8
E 10
Expertise
33 AL-KO Gas spring range
AL-KO
Stroke
(mm)
60 - 200
60 - 200
Extended
length (mm)
230 - 605
230 - 605
Ø Piston rod
(mm)
8
10
Ø Cylinder
(mm)
Overview of the AL-KO wheel shock absorber range
Type
BG 2
BG 3
K1
K2
Damping power
Tension (N) max
3500
4500
150
80
Damping power
pressure (N) max
800
1000
750
1600
24
27
Ø External
Cylinder (mm)
39
45
24
29
Mounting fittings
piston rod
Thread M8 /
M8 x 1
Sleeves
Pipe sections
Thread M8 /
M8 x 1
Sleeves
Pipe sections
Ø External
protective pipe (mm)
47
58
30
38
Mounting fittings
Cylinder
Sleeves
Plates
Pipe sections
Sleeves
Plates
Pipe sections
Stroke
(mm)
70 - 300
70 - 300
70 - 150
70 - 150
33

Installation instructions
Tips and recommendations
The gas springs are designed specifically for your intended application and are supplied
ready-for-installation. Please follow the operating instructions to ensure optimum performance
of your gas springs:
■ Installation takes place with the piston
rod directed downwards
■ Impurities or colouring of the piston
rod destroy the seal of the gas spring
■ The gas spring must not be twisted
■ Avoid the occurrence of bending and
lateral forces; therefore please only use
suitable connecting parts
■ Do not undertake any mechanical
processing of the gas spring
■ Observe the stated maximum permitted
tensile forces
34 AL-KO Gas spring range
■ Do not heat above 120°C!
■ The gas spring is subject to high pressure
(up to 200 bar)! Please do not open it!
■ The alignment of the connecting parts in
comparison with each other must be made in
a clockwise direction; please do not dismantle
the fastening fittings
■ The standard gas springs are designed for
use in temperatures ranging from -30°C to
+80°C; obviously we can also produce gas
springs for extreme application conditions if
you require.