410 TECHNICAL INFORMATION Gas Springs t High pressure gas (Nitrogen gas: noncombustible) is sealed in a cylinder, and the gas reaction force is used as spring. Because this small gas spring receive small spring constant from large initial load in spite of its size, it can be used for wide range of applications including machines, furniture, cars, office automation equipments, etc. Features t In spite of its size and weight, large spring (reaction) force can be obtained. t Spring (reaction) force is almost constant throughout its stroke. t $BO CF EFTJHOFE BT SFRVJSFE GPS XJEF applications. About Initial Selection 1. Calculate the necessary reaction force (F) through the following formula, then find out possible model types. F : Necessary Reaction Force (at Max. Length) W : Weight of Doors, etc. A : Horizontal Distance between Fulcrum (Door Hinge, etc.) and the Center of Gravity B : Vertical Distance between Fulcrum (Door Hinge, etc.) and the Axis of Gas Spring 2. Select Fx1.1 or more for the gas spring reaction force. Gas reaction forces may vary within about 10%. 3. If required reaction force (Fx1.1) is larger than the reaction force at the max. length of gas spring -( ) mm, use 2 or more springs. 4. Reaction forces are designed at 20°C. Reaction forces increase or decrease as the temperature changes. About Final Selection t -PBE NBZ WBSZ EFQFOEJOH PO EPPS BOHMFT PS HBT TQSJOH NPVOUJOH QPTJUJPOT $BMDVMBUF UIF SFBDUJPO GPSDF moment based on the subject design drawing. &Precautions for Use (for FGS, GSS, FGSS, HFGSS and FRGSS) t 1BZ BUUFOUJPO UP UFNQFSBUVSF PG HBT TQSJOHT EVSJOH VTF %P OPU TUPSF GPS QSPMPOHFE EVSBUJPO *U XJMM DBVTF QSFNBUVSF TFBM EFUFSJPSBUJPO BOE SFBDUJPO GPSDF EFDMJOF (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 on each product page.) t (BT SFBDUJPO GPSDFT BSF TMJHIUMZ EJGGFSFOU BNPOH JOEJWJEVBM QSPEVDUT BOE NBZ DIBOHF EFQFOEJOH PO UIF UFNQFSBUVSF t 3FBDUJPO GPSDF NBZ EFDSFBTF EFQFOEJOH PO UIF PQFSBUJOH DPOEJUJPO BOE UJNFT PG VTF 1MFBTF SFQMBDF JU XIFO JU DBOOPU SFBDI UIF OFDFTTBSZ SFBDUJPO GPSDF t %P OPU TUPSF PS VTF JO UIF FOWJSPONFOUT XIFSF UIF SPE NBZ SVTU PS JO DIFNJDBM BUNPTQIFSF 'VSUIFSNPSF EP OPU QBJOU UIF HBT TQSJOH t %P OPU EBNBHF UIF DZMJOEFST BOE SPET *G SPET BSF XSBQQFE XJUI UBQF PS QMBTUJD TUSJOHT BEIFTJWFT PS GJCFST SFNBJOFE PO UIF TVSGBDF XJMM DPNF JOTJEF SFTVMUJOH JO gas/oil leakage. Be sure to see if there is no rust, scratches, adhesives and foreign objects on the rod before use. t %P OPU BQQMZ GPSDFT MJLF CFOEJOH MPBE BOE UPSTJPO 3FDFJWJOH MPBE POMZ XJUI HBT TQSJOHT SFTVMUT JO VOCBMBODFE MPBE XIJDI DBVTFT FBSMZ EFUFSJPSBUJPO BOE HBT PJM leakage. For rotating motion, be sure to secure smooth sliding on the hinge. For linear motion, install a guide, etc. to prevent unbalanced load. t %P OPU FYUFOE HBT TQSJOHT CFZPOE JUT NBY MFOHUI &WFO JO UIF NBY TUSPLF EVSJOH DPNQSFTTJPO JU NVTU SFNBJO BCPVU NN BXBZ GSPN UIF TUSPLF FOE %P OPU extend and compress at high speeds (with 1m/s or more). t 6TF '(4 BOE (44 XJUI UIF DZMJOEFS TJEF VQ BOE UIF SPE TJEF EPXO TP UIBU JOUFSOBM PJM QSPUFDUT UIF SVCCFS TFBM 'PS '(4 (44 BOE '3(44 EP OPU UJMU NPSF UIBO degrees. When it is necessary to temporarily store, do not tilt more than 60 degrees. t "MUIPVHI UIFSF JT OP SFTUSJDUJPO JO UIF VTF BOHMF GPS UIF '(44 BOE )'(44 SPE EPXOXBSE JT SFDPNNFOEFE Features of Mounting Orientation Free Gas Springs (FGSS) t .PVOUJOH 0SJFOUBUJPO 'SFF (BT 4QSJOHT 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. 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 inner pressure of gas chamber C. 3. When rod moves from the predetermined position, oil in chamber AB moves through orifice hole of the piston. 4. The rod volume change in the cylinder is adjusted by the change of gas chamber C. F= WxA ———— B A B W F Door Axis Line Gas reaction force at the max. length -10 (5) mm and the max. length -(s) mm are listed in this catalog. Gas reaction force generally changes proportionately. If the gas reaction force on a certain stroke is required, connect the 2 points with a straight line as shown in Fig. 3 and read the value on the stroke to conjecture. Stroke Max. Length Min. Length Max. Length-(S)mm Fa Fb f f Shrinking Solid Line Theory Line Expansion Solid Line Gas Reaction Force Fig.3 Gas Spring Reaction Force Max. Length -10mm (GSS / FGS / FGSS) Max. Length -5mm (HFGSS / FRGSS) &f= Internal Sliding Resistance (Theoretical Value x0.1) Attaching Portion Attaching Portion Tube Tube Piston Piston Rod Rod Seal Seal Attaching Portion Attaching Portion Rod Guide Rod Guide Free Piston Oil Oil Chamber C Chamber B Chamber A Orifice Orifice Compression Gas Compression Gas Use within this range. Usable at any angle. 60° 60° 360° 360° & The internal structure of FRGSS is partly different from Fig.1 on the right. & Only HFGSS is applicable to any angle, 360-degrees. Fig. 1 Gas Springs (FGS, GSS, HFGSS, FRGSS) Fig.2 Gas Springs – Mounting Orientation Free Type (FGSS) Gas Springs Overview
RkJQdWJsaXNoZXIy MTc2MTk0OA==