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Gas Springs Gas Springs

Overview Mounting Orientation Free Type

Gas Springs ble at any ang R9

·H
 igh pressure gas (Nitrogen gas: non- Attaching Portion
Attaching Portion
Usa le
FGSS

.
360° 360° Ø10
combustible) is sealed in a cylinder, and No. 15050A ~ No. 22300B
the gas reaction force is used as spring. Tube

B
Because this small gas spring receive small Compression Gas

A
7

7
spring constant from large initial load in Orifice Seal 24 24
ble at any ang
spite of its size, it can be used for wide Rod Guide

3.2

3.2
Piston H Usa le
range of applications including machines, Rod

.
L
Chamber A 360° 360°
furniture, cars, office automation equipment, Rod
Oil R11
etc. Piston Operating Temperature: -20~60°C
Oil Orifice No. 27150A ~ No. 27300B Ø10 M Material:
Feature Seal Tube
Chamber B Cylinder: 1008 Pipe Steel
Rod Guide (Carbon Steel Hollows for Machine Structural Use)
· In spite of its size and weight, large spring Rod: 1020 Carbon Steel
Free Piston

11

11
(reaction) force can be obtained.

A
Compression Gas Gas: Nitrogen Gas (N2)
within this ran Chamber C ble at any ang 16 16
· Spring (reaction) force is almost constant Use ge Usa le S Surface Treatment:

3.2

3.2
60° 60°
EThe internal structure Attaching Portion H Cylinder: Baked-On (Black Matt)

.
throughout its stroke. of FRGSS is partly Attaching Portion 360° 360°
L Rod: Hard Chrome Plating
different from Fig.1
on the right. Gas Reaction Force (20°C) Volume Discount
Only HFGSS is applicable to any angle,
E Max. Min. Applicable Unit Price
About Initial Selection 360-degrees. Part Number
Length Length Stroke
Lmax. -10mm Stroke Lmax. -(S)mm Stroke
A B H Mounting
Weight Rate
Fa Fb (g)
1. Calculate the necessary reaction force Fig.1 G
 as Springs Fig.2 G
 as Springs – Mounting Orientation Free Type Lmax Lmin (S) Bracket 1~9 pc(s). 10~14 15~19
Type No. N kgf N kgf
(FGS, GSS, HFGSS, FRGSS) (FGSS)
(F) through the following formula, then 15050A 49 5 69 7
find out possible model types. 15050K 246 196 50 70 7.1 90 9.1 40 164 125
15050B 98 10 127 13
F: Necessary Reaction Force (at Max. 15080A 49 5 69 7
Gas reaction force at the max. length -10 (5) mm and 15080B
330 250 80
98 10 127 13
70
15 7
218 150
Length)
W: Weight of Doors, etc. the max. length -(S) mm are listed in this catalog. Gas 15090A
360 270 90
49 5 69 7
80 238 155
A 15090B 98 10 127 13
A: Horizontal Distance between reaction force generally changes proportionately. If
WxA 15100A 49 5 69 7
F= B Fulcrum (Door Hinge, etc.) and the the gas reaction force on a certain stroke is required, 15100B
386 286 100
98 10 127 13
254 170
Door 90
Center of Gravity connect the 2 points with a straight line as shown in 18100A 196 20 255 26
386 286 100 253 210
18100B 294 30 382 39
B: Vertical Distance between Fulcrum W
Fig. 3 and extrapolate the stroke value. 18 8
18150A 196 20 265 27
(Door Hinge, etc.) and the Axis of 526 376 150 140 343 280
Max. Length -10mm (GSS / FGS / FGSS) 18150B 294 30 392 40
Gas Spring F Max. Length -5mm (HFGSS / FRGSS) 22050A 196 20 265 27
22050B 294 30 402 41
2. Select Fx1.1 or more for the gas spring reaction force. Axis Line
22050C
246 196 50
392 40 529 54
40 163 215
ine
Gas reaction forces may vary within about ±10%. olid L 22050D
k ing S 490 50 655 66
3. If required reaction force (Fx1.1) is larger than the reaction Shrin f 22080A 196 20 274 28
Gas Reaction Force

force at the max. length of gas spring -( ) mm, use 2 or e 22080B 294 30 412 42
ry Lin 330 250 80 70 217 270
Theo f 22080C 392 40 539 55
more springs. B d Lin
e
Soli 22080D 490 50 675 68
4. Reaction forces are designed at 20°C. Reaction forces nsion
Expa 22090A 196 20 265 27
increase or decrease as the temperature changes. 22090B 294 30 402 41 GSBR8A-S
360 270 90 80 237 280
22090C 392 40 529 54 GSBR8B-S
Max. Length-(s) mm 22090D 490 50 659 67 GSBR8C-S
About Final Selection Fa Fb 22100A 196 20 274 28 GSBR8D-S
· Load may vary depending on door angles or gas spring mounting positions. Calculate the reaction force 22100B 386 286 100 294 30 412 42 90 253 (P.364) 305
moment based on the subject design drawing. Max. Length Stroke Min. Length 22100C 392 40 549 56
22120A 196 20 274 28
Fig.3 Gas Spring Reaction Force 22120B 294 30 402 41
FGSS 440 320 120 110 287 320
EPrecautions for Use (for FGS, GSS, FGSS, HFGSS and FRGSS) Ef= Internal Sliding Resistance (Theoretical Value x0.1)
22120C
22120D
392
490
40
50
539
672
55
68
22 10
· Pay attention to temperature of gas springs during use. Do not store for prolonged duration. It will cause premature seal deterioration and reaction force decline. 22130A 196 20 274 28
(Product Temperature Range: GSS, FGSS: -20°C~60°C / HFGSS: -20°C~80°C / FRGSS: -30°C~80°C   Some products have different temperature range. Confirm for 22130B 470 340 130 294 30 402 41 120 307 330
each product page.) 22130C 392 40 539 55
· Gas reaction forces are slightly different among individual products and may change depending on the temperature. 22150A 196 20 274 28
22150B 526 376 150 294 30 402 41 140 343 400
· Reaction force may decrease depending on the operating condition and times of use. Please replace it when it cannot reach the necessary reaction force. 22150C 392 40 539 55
· Do not store or use in the environments where the rod may rust, or in chemical atmosphere. Furthermore, do not paint the gas spring. 22180A 196 20 274 28
· Do not damage the cylinders and rods. If rods are wrapped with tape or plastic strings, adhesives or fibers remained on the surface will come inside, resulting in 22180B 610 430 180 294 30 402 41 170 397 420
gas / oil leakage. Be sure to see if there is no rust, scratches, adhesives and foreign objects on the rod before use. 22180C 392 40 539 55
· Do not apply forces like bending load and torsion. Receiving load only with gas springs results in unbalanced load, which causes early deterioration and gas/oil 22200A 196 20 265 27
leakage. For rotating motion, be sure to secure smooth sliding on the hinge. For linear motion, install a guide, etc. to prevent unbalanced load. 22200B 666 466 200 294 30 402 41 190 433 480
22200C 392 40 529 54
· Do not extend gas springs beyond its max. length. Even in the max. stroke (during compression), it must remain about 10mm away from the stroke end. Do not 22250A 196 20 304 31
extend and compress at high speeds (with 1m/s or more). 22250B 750 500 250 294 30 451 46 240 467 540
· Use FGS and GSS with the cylinder side up and the rod side down, so that internal oil protects the rubber seal. For FGS, GSS and FRGSS, do not tilt more than 60 22250C 392 40 598 61
degrees. When it is necessary to temporarily store, do not tilt more than 60 degrees. 22300A 196 20 323 33
850 550 300 290 517 600
· Although there is no restriction in the use angle for the FGSS and HFGSS, rod downward is recommended. 22300B 294 30 490 50
27150A 490 50 657 67
27150B 526 376 150 588 60 784 80 140 351 610
Features of Mounting Orientation Free Gas Springs (FGSS) 27150C 686 70 921 94
· Mounting Orientation Free Gas Springs 27200A 490 50 657 67
27200B 666 466 200 588 60 784 80 190 441 760
1. Nitrogen gas (non-combustible) is sealed in the gas chamber C with a free moving piston intervening, and gas reaction force is used as a spring. 27200C 686 70 921 94 27.4 12.5
GSBR8F-S
2. Gas chamber C has a constant reaction force in extending direction since it pressurizes oil chamber AB. Therefore the size of reaction force depends on the (P.364)
27250A 490 50 725 74
inner pressure of gas chamber C. 27250B 750 500 250 588 60 872 89 240 475 900
3. When rod moves from the predetermined position, oil in chamber AB moves through orifice hole of the piston. 27250C 686 70 1019 104
27300A 490 50 774 79
4. The rod volume change in the cylinder is adjusted by the change of gas chamber C. 850 550 300 290 525 1000
27300B 588 60 931 95
EFor Mounting Brackets, see P.364 and 365. EFor orders larger than indicated quantity, please request a quotation.

Part Number
FGSS15050A
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2 -361 2 -362