Hydraulic Shock Absorbers & Buffers

Transcription

1 Hydraulic Shock bsorbers & Buffers

2 Best Engineered for Energy bsorption OVERVIEW s manufacturing process speeds up in every industry for better productivity and production size is getting larger, needs for high performance hydraulic shock absorber are increasing in the market. IZMC has designed entirely new and innovative shock absorber, which achieved much higher output than a conventional shock absorber in rating by 200% upgrade and impact velocity up to 5m/sec. This new product is fully optimized for the best system performance and subjects to higher impact forces. This new design features a larger piston head diameter and a material balance to higher energy absorption. IZMC will provide better solutions for energy absorption, longer life cycles and high quality products. 02

3 Hydraulic Shock bsorbers & Buffers PPLICTIONS utomotive robotics & Transfer lines Cranes : Bridge & Trolley, Container, Overheads Plastic bottle making Electronics and Semiconductor Glass forming equipments Pick & place robotics ssembling conveyors Material handling Printing machine Paper rolls Packing machinery Military Food and Beverage Textile Steel mills : Slab ingot, Crushing, Turntable Elevator Medical and Pharmaceutical equipments utomated storage and Retrieved system erospace Railway : Side & Front buffers Fixed rail end stop & Friction stop 03

4 SHOCK BSORBER Construction and principle Shock absorber consists of 5 major parts; Head, piston rod, body, adjustment dial and lock nut. Head is the direct contact part which is impacted by moving object and operated as a stopper to the body when cycle is completed. Piston rod transfers impact energy to the piston through the full stroke. Outside the body is fully threaded for easy installation at any position and for more heat dissipation. djustment dial is for the optimum operation by turning and setting knob to the various impact conditions. Lock nut is used to install and fix the shock absorbers tightly coupled with body thread on the machine. The Inside of shock absorber consists of piston, check valve, inner tube, multiple orifices, accumulator, return spring and oil. On impact, the piston rod is inserting into inner tube which causes pressure to seat check ball and close the check valve, and forces the oil in the chamber to flow through the orifice, generating damping force, to the opposite piston and accumulator which is compressed to compensate the volume of the piston rod. RECOIL SPRING BODY LOCK NUT DJUSTMENT DIL BERING SEL HED INNER TUBE CCUMULTOR PISTON ROD PISTON CHECK VLVE Energy absorption theory fter impact, coil spring forces check ball unseated and open the check valve to pass the oil into the oil chamber and recoil piston head and rod to its original position. When oil passes through the orifice, the impact energy is converted to the heat energy and dissipated to the atmosphere. 04

5 Hydraulic Shock bsorbers ORIFICE CHRCTERISTIC Single Orifice Single orifice type is called dashpot which has only one orifice on the piston as a hole or annular shape. t the beginning the shock force is very high and decreased rapidly. Force ORIFICE Multiple Orifices Through the stroke, the piston head closes one by one, which provides constant linear deceleration. DJUSTMENT TYPE djustment type shock absorber is for the optimum deceleration to turn and set properly adjustment dial to the impact conditions. Force ORIFICE SELF-COMPENSTING TYPE Self-compensating shock absorber is suitable for unvaried operating conditions and available in the range of effective weight for the best deceleration. 1 is a diagram of high speed and low propelling force. B1 is a diagram of low speed and high propelling force. 1 B1 Force ORIFICE 05

6 Hydraulic Shock bsorbers Symbols Useful Formulas Symbol Unit Description EK Nm Kinetic energy EW Nm Work energy ET Nm Total energy ETC Nm / h Total energy per hour FS N Impact force FP N Shock force WE kg Effective weight C Cycles / h Cycles per hour S m V m / s Impact velocity VD m / s Mass velocity PM kw Motor power D mm Inner diameter of cylinder Symbol Unit Description T Nm Torque H m Height W kg Weight P bar Operating pressure ω rad / s ngular velocity α ngle of incline Ⅰ kgm² Mass moment K m Radius of gyration RS m Mounting distance from pivot point µ Coefficient of friction g m / s² Gravitational acceleration a m / s² cceleration t s Time Description Symbol Formulas Impact force FS = ET / S / 0.8 Motor power FP = 3000 X PM / V Cylinder power FP = X D² X P Effective weight WE = 2 X ET / V² Velocity (free falling) Velocity (with acceleration) Velocity (w/o acceleration) V V V = 2 X g X H = 2 X D / t = D / t Deceleration a = V² / 2 / S Stopping time t = 2.6 X S / V Sizing Examples. Free Falling Mass B. Down Mass with Propelling Force Weight W = 600kg Weight W = 1,200kg S H Height H = 0.5m Cycles per hour Gravitational acceleration C = 60Cycles / h g = 9.81m / s² Propelling Force (Down) S H Impact velocity Inner diameter of cylinder Operating pressure Cycles per hour V = 1.8m / s D = 140mm P = 5bar C = 125Cycles / h 06 EK = W X g X H 600 X 9.81 X 0.5 2,943 Nm Select with EK : MD EW = W X g X S 600 X 9.81 X Nm ET = EK + EW 2, ,532 Nm ETC = ET X C 3,532 X ,896 Nm / h V = 2 X g X H 2 X 9.81 X m / s WE = 2 X ET / V² 2 X 3,532 / 3.13² 720 kg Selected with EK, ETC & WE : MD EK = W X V² / 2 1,200 X 1.8² / 2 1,944 Nm Select with EK : MD85-50 FP = X D² X P X 140² X 5 19,465 Nm + W X g + 1,200 X 9.81 EW = FP X S 19,465 X Nm ET = EK + EW 1, ,917 Nm ETC = ET X C 2,917 X ,656 Nm / h WE = 2 X ET / V² 2 X 2,917 / 1.8² 1,801 kg Select with EK, ETC & WE : MD85-50

7 Hydraulic Shock bsorbers C. Up Mass with Propelling Force D. Horizontal Mass without Propelling Force Weight W = 200kg H S Propelling Force (Up) Impact velocity Inner diameter of cylinder Operating pressure Cycles per hour V = 2.5m / s D = 150mm P = 5bar C = 180Cycles / h Weight Impact velocity W = 100kg V = 1.5m / s S Cycles per hour C = 600Cycles / h EK = W X V ² / X 2.5² / Nm Select with EK : MD45-50 FP = X D ² X P X 150² X 5 6,869 Nm - W X g X 9.81 EW = FP X S 6,869 X Nm ET = EK + EW Nm ETC = ET X C 968 X ,323 Nm / h WE = 2 X ET / V² 2 X 968 / 2.5² 310 kg Select with EK, ETC & WE : MD45-50 EK = W X V² / X 1.5² / Nm ET = EK + EW Nm ETC = ET X C 113 X ,800 Nm / h WE = 2 X ET / V² 2 X 113 / 1.5² 100 kg Select with EK, ETC & WE : SD25-25 E. Horizontal Mass with Propelling Force [Cylinder] F. Horizontal Mass with Propelling Force [Motor] Propelling Force (Cylinder) S Propelling Force (Motor) S Weight Impact velocity Inner diameter of cylinder W = 300kg V = 1.2m / s D = 50mm Operating pressure Cycles per hour P = 5bar C = 300Cycles / h Weight Impact velocity W = 1,300kg V = 1.6m / s Motor power Cycles per hour PM = 3kW C = 100Cycles / h EK = W X V² / X 1.2² / Nm Select with EK : SD36-25 FP = X D² X P X 50² X Nm EW = FP X S 981 X Nm ET = EK + EW Nm ETC = ET X C 241 X ,300 Nm / h WE = 2 X ET / V² 2 X 241 / 2.5² 334 kg Select with EK, ETC & WE : SD36-25 EK = W X V²/ 2 1,300 X 1.6² / 2 1,664 Nm Select with Ek : MD64-50 FP = 3,000 X PM / V 3,000 X 3 / 1.6 5,625 N EW = FP X S 5,625 X Nm ET = EK + EW 1, ,945 Nm ETC = ET X C 1,945 X ,500 Nm / h WE = 2 X ET / V² 2 X 1,945 / 1.6² 1,520 kg Select with EK, ETC & WE : MD

8 Hydraulic Shock bsorbers G. Sliding Down Mass without Propelling Force H. Rotary Table Mass with Propelling Force K H RS Torque α S S ω 08 Weight W = 800kg Height H = 0.7m EK = W X H X g 800 X 0.7 X ,494 Nm Select with Ek : MD FP = W X sin(α) X g 800 X sin(30) X ,922 N EW = FP X S 3,922 X Nm ET = EK + EW 5, ,886 Nm ETC = ET X C 5,886 X ,600 Nm / h V = 2 X g X H 2 X 9.81 X m / s WE = 2 X ET / V² 2 X 5,886 / 3.7² 857 Nm / h Select with EK, ETC & WE : MD I. Swiveling Mass with Propelling Force ω S K Rs Weight ngular of incline Cycles per hour ngular velocity Mounting distance from pivot point α = 30 C = 100Cycles / h W = 50kg ω = 2.5rad / s Rs = 0.8m Radius of gyration K = 0.5m Inner diameter of cylinder Operating pressure Cycles per hour D = 40mm P = 5Bar C = 1,000Cycles / h I = W X K² 50 X 0.5² 13 kgm² EK = I X ω²/2 13 X 2.5² / 2 39 Nm Select with Ek : SD20-15 FP = X D ² X P X K / Rs X 40² X 5 X 0.5 / N T = FP X Rs 393 X Nm EW = FP X S 393 X Nm ET = EK + Ew Nm ETC = ET X C 45 X 1,000 45,000 Nm / h V = Rs X ω 2.5 X m / s WE = 2 X ET / V² 2 X 45 / 2² 22 kg Select with ET, ETC & WE : SD20-15 Weight ngular velocity Mounting distance from pivot point Weight Impact velocity ngular velocity W = 200kg ω = 2rad / s Rs = 0.5m I = W X K² 200 X 0.8² 128 kgm² EK = I X ω² / X 2² / Nm Select with Ek : SD36-25 FP = T / Rs 400 / N EW = FP X S 800 X Nm ET = EK + EW Nm ETC = ET X C 276 X ,600 Nm / h V = RS X ω 0.5 X 2 1 m / s WE = 2 X ET / V² 2 X 276 / 1² 552 kg Select with EK, ETC & WE : SD36-25 J. Swiveling Mass without Propelling Force ω W = 200kg V = 2m / s ω = 2.5rad / s K Radius of gyration Torque Cycles per hour Mounting distance from pivot point Radius of gyration Cycles per hour K = 0.8m T = 400Nm C = 350Cycles / h Rs = 0.6m K = 0.8m C = 200Cycles / h I = W X K² 200 X 0.8² 128 kgm² EK = I X ω² / X 2.5² / Nm Select with EK : SD36-50 FP = W X g X K / Rs 200 X 9.81 X 0.8 / 0.6 2,616 N EW = FP X S 2,616 X Nm ET = EK + Ew Nm ETC = ET X C 531 X ,200 Nm / h VD = V X Rs / K 2 X 0.6 / m / s WE = 2 X ET / VD² 2 X 531 / 1.5² 472 kg Select with EK, ETC & WE : SD36-50 S Rs

9 Hydraulic Shock bsorbers SD & SDS Series Description SD Series have an adjustment dial which can set 12 finite steps according to the impact velocity condition with advanced wide damping control range. SDS Series have an ability to adjust and control deceleration force by self compensating according to the impact velocity. SD & SDS Series have achieved 200% of energy absorption with expanded Effective Weight coverage compared with former products. SEL INNER TUBE BERING BERING SEL HED BODY HED PISTON CCUMULTOR PISTON ROD PISTON ROD CCUMULTOR RECOIL SPRING PISTON DJUSTMENT DIL RECOIL SPRING SD series SDS series Features ll outside thread-type body surface enables easy installation by fixing nuts tightly. Heat energy dissipation is enabled efficiently by the increased body surface area. Zn-Ni body coating (black color) enables to improve anti-corrosiveness for a long time usage. Stop collar is unnecessary if you re using steel head. The impact noise will be much reduced by using poly pad or urethane cap. Bearing is designed to protect seal by using special material and it guarantees a long durability. Velocity range : Standard : 0.1 ~ 5m/s Low Speed : OPTION Temperature coverage : -10 ~ 80 C Special : -40 ~ 120 C SD & SDS Series Ordering Information SD CS Body Thread Size CS : Stop Collar FR : Rectangular Flange LS : Side Load daptor MC : Clamp Mount SD : SERIES : djustable S : Non-djustable 09

10 SD 12/14 Series Engineering Data (mm) Max.Energy / Cycle Max.Energy / Hour (Nm) [Nm/h] Effective Weight (kg) Recoil Force (N) Ext. Com. Weight (g) SD12-10(B) , SD14-12(B) , Dimensions B C D E F G H M Dr SD12-10(B) Φ10.3 Φ M12 X 1.0 Φ4 SD14-12(B) Φ12 Φ M14 X 1.5 Φ4 E B C M ØDr D ØF ØG H : SW Steel head+hard PU button (B TYPE: Black) ccessories Stop Collar Side Load dapter Clamp Mount Lock Nut B1 B2 B3 B4 B5 C1 C2 C3 C4 C5 C6 D1 D2 D3 SD12-10(B) 20 8 Φ13.8 M12 X 1.0 SD14-12(B) Φ18 M14 X M12 X 1.0 M14 X 1.5 Φ Φ M12 X 1.0 M14 X 1.5 M5 X 18L M5 X 25L 14 M12 X M14 X B1 B2 B3 C1 C6:Bolt Size D1 2 C2 D3 3 4 B4 B5 C5 C3 C4 D2 Stop Collar Side Load dapter Clamp Mount Lock Nut 10

11 Hydraulic Shock bsorbers SD 16/20/25/27 Series Engineering Data (mm) Max.Energy / Cycle (Nm) Max.Energy/Hour (Nm / h) Effective Weight (kg) Recoil Force (N) Ext. Comp. Weight (g) SD16-12(B) , SD20-15(B) , , SD25-25(B) , , SD27-25(B) , , Dimensions B C D E F G H M Dr SD16-12(B) Φ13.6 Φ M16 X 1.5 Φ5 SD20-15(B) Φ17.6 Φ M20 X 1.5 Φ6 SD25-25(B) Φ22.6 Φ16 23 M25 X 1.5 Φ8 SD27-25(B) SD27-25F(B) Φ22.6 Φ16 23 M27 X 3.0 M27 X 1.5 Φ8 E B C M ØDr D H : SW Steel head+hard PU button (B TYPE: Black) ccessories Stop Collar Side Load dapter Clamp Mount Lock Nut B1 B2 B3 B4 B5 C1 C2 C3 C4 C5 C6 D1 D2 D3 SD16-12(B) Φ19 M16X M16X1.5 Φ M16X1.5 M6X25L 19 M16X1.5 6 SD20-15(B) Φ24 M20X M20X1.5 Φ M20X1.5 M6X30L 24 M20X1.5 6 SD25-25(B) Φ31.5 M25X M25X1.5 Φ M25X1.5 M6X35L 32 M25X1.5 8 SD27-25(B) SD27-25F(B) Φ31.5 M27X3.0 M27X M27X3.0 M27X1.5 Φ M27X3.0 M27X1.5 M6X35L 32 M27X3.0 M27X B1 B2 B3 2 3 ØF ØG C1 C6:Bolt Size D1 C2 D3 4 B4 B5 C5 C3 C4 D2 Stop Collar Side Load dapter Clamp Mount Lock Nut 11

12 SD 36 Series Engineering Data (mm) Max.Energy / Cycle Max.Energy / Hour (Nm) [Nm / h] Effective Weight (kg) Recoil Force (N) Ext. Comp. Weight (g) SD36-25(B) , , SD36-50(B) , , Dimensions B C D E F G H M Dr SD36-25(B) Φ31 Φ28 34 M36 X 1.5 Φ10 SD36-50(B) Φ31 Φ28 34 M36 X 1.5 Φ10 B C M D E ØDr ØF ØG H : SW Steel head+hard PU button (B TYPE: Black) ccessories Stop Collar Rectangular Flange Clamp Mount Lock Nut B1 B2 B3 B4 B5 B6 C1 C2 C3 C4 C5 C6 D1 D2 D3 SD36-25(B) Φ45 M36 X Φ M36 X 1.5 M6 X 45L 46 M36 X B1 B2 B5 C1 C6:Bolt Size D1 3 B3 B4 B6 C2 D3 4 Lock Slot C5 C3 C4 D2 Stop Collar Rectangular Flange Clamp Mount Lock Nut 12

13 Hydraulic Shock bsorbers SDS 10/12/14 Series Engineering Data (mm) Max.Energy / Cycle (Nm) Max.Energy / Hour (Nm / h) Effective Weight (kg) S M H Recoil Force (N) Ext. Comp. SDS10-08(B) , SDS12-10(B) , SDS14-15(B) , , Weight (g) Dimensions B C D E F G H M Dr SDS10-08(B) Φ8.6 Φ8.6 8 M10 X 1.0 Φ3 SDS12-10(B) Φ10.8 Φ M12 X 1.0 Φ4 SDS14-15(B) SDS14-15F(B) Φ11.8 Φ M14 X 1.5 M14 X 1.0 Φ4 B C D M ØDr E ØF ØG H : SW Steel head+hard PU button (B TYPE: Black) ccessories Stop Collar Clamp Mount Lock Nut C1 C2 C3 C4 C5 C6 D1 D2 D3 SDS10-08(B) 20 8 Φ12.8 M10 X M10 X 1.0 M4 X 16L 13 M10 X SDS12-10(B) 20 8 Φ13.8 M12 X M12 X 1.0 M5 X 18L 14 M12 X SDS14-15(B) SDS14-15F(B) Φ18 M14 X 1.5 M14 X M14 X 1.5 M14 X 1.0 M5 X 25L 19 M14 X 1.5 M14 X C1 C6:Bolt Size D1 3 C2 D3 4 C5 C3 C4 D2 Stop Collar Clamp Mount Lock Nut 13

14 SDS 20/25 Series Engineering Data (mm) Max.Energy / Cycle (Nm) Max.Energy / Hour (Nm / h) Effective Weight (kg) S M H Recoil Force (N) Ext. Comp. Weight (g) SDS20-20(B) , , SDS25-25(B) , , , Dimensions B C D E F G H M Dr SDS20-20(B) Φ17 Φ M20 X 1.5 Φ6 SDS25-25(B) SDS25-25F(B) Φ22 Φ16 25 M25 X 2.0 M25 X 1.5 Φ8 B C D M E ØDr ØF ØG H : SW Steel head+hard PU button (B TYPE: Black) ccessories Stop Collar Clamp Mount Lock Nut C1 C2 C3 C4 C5 C6 D1 D2 D3 SDS20-20(B) Φ24 M20 X M20 X 1.5 M6 X 30L 24 M20 X SDS25-25(B) SDS25-25F(B) Φ31.5 M25 X 2.0 M25 X M25 X 2.0 M25 X 1.5 M6 X 35L 32 M25 X 2.0 M25 X C1 C6:Bolt Size D1 2 3 C2 D3 4 C5 C3 C4 D2 Stop Collar Clamp Mount Lock Nut 14

15 Hydraulic Shock bsorbers MD Series Description MD Series is the medium & large size model. Piston is compressing the oil chamber as Piston Rod starts to move towards oil chamber when shock impact happens. It makes oil to flow forcedly from oil chamber to the piston back side or ccumulator through the groove at inner tube. During this oil flow by compressing, deceleration force will occur as the kinetic energy is transformed to the heat energy. This heat energy will be dissipated through the threaded body surface efficiently. fter impact load is removed, recoil spring will operate to return the piston rod to the original position. CCUMULTOR SEL INNER TUBE HED BERING PISTON ROD PISTON Features BODY DJUSTMENT DIL MD Series have an adjustment dial which can set 12 finite steps according to the impact velocity condition with an advanced wide damping control range. MD Series have achieved 200% of energy absorption with an expanded effective weight coverage compared with former products. ll outside thread-type body surface enables easy installation by fixing nuts tightly with it. Heat energy dissipation is enabled efficiently by the increased body surface area. Zn-Ni body coating (black color) enables to improve anti-corrosiveness for a long time usage. Stop collar is unnecessary if you re using steel head. The impact noise will be much reduced by using poly pad or urethane cap. Bearing is designed to protect seal by using special material and it guarantees a long durability. Velocity range : 0.3 ~ 5m/s Low Speed : OPTION Temperature coverage : Standard : -10 ~ 80 C Special : -40 ~ 120 C MD Series Ordering Information MD CS Body Thread Size MD : SERIES : djustable CS : Stop Collar CU : Urethane Cap FS : Square Flang CL : Lock Collar CR : Rod Clevis CE : End Clevis MC : Clamp Mount 15

16 MD 45 Series Engineering Data (mm) Max.Energy / Cycle (Nm) Max.Energy / Hour (Nm / h) Effective Weight (kg) Recoil Force (N) Ext. Comp. Weight (kg) MD , , MD , , , MD , , , B M45(42) X 1.5P Φ14 Clamp Mount C(Min/Max) D(Min/Max) Clevis Mount E Φ13 22 Lock Collar 23.5 Φ13 24 Φ50 Φ24 24 Φ Φ39 17 Φ42 Urethane Cap 19 End Clevis Rod Clevis 12 Dimensions B C D E 16 MD / / MD / / MD / /

17 Hydraulic Shock bsorbers MD 64 Series Engineering Data (mm) Max.Energy/Cycle (Nm) Max.Energy/Hour (Nm/h) Effective Weight (kg) Recoil Force (N) Ext. Comp. Weight (kg) MD , , , MD , , , MD , , , B M64 X 2.0P Φ20 Clamp Mount C(Min/Max) D(Min/Max) Clevis Mount E Φ19 27 Lock Collar 42.5 Φ19 38 Φ74 Φ38 38 Φ Φ58 17 Φ62 Urethane Cap 32 End Clevis Rod Clevis 16 Dimensions B C D E MD / / MD / / MD / /

18 MD 85 Series Engineering Data (mm) Max.Energy / Cycle Max.Energy / Hour (Nm) [Nm / h] Effective Weight (kg) Recoil Force (N) Ext. Comp. MD , , , MD , , , MD , , , Weight (kg) B M85 X 2.0 Φ25 Clamp Mount C(Min/Max) D(Min/Max) Clevis Mount E Φ19 27 Lock Collar 34 Φ19 38 Φ98 Φ38 38 Φ Φ75 20 Φ80 Urethane Cap Dimensions End Clevis Rod Clevis B C D E 18 MD / / MD / / MD / /

19 Hydraulic Shock bsorbers MD Series ccessories Stop Collar Clamp Mount 1 2 C1 Bolt:C6 3 C2 4 C5 C3 C4 Square Flange Lock Collar B1 B2 D1 B3 4-B5 D3 Lock slot B4 D2 Dimensions Stop Collar Square Flange Clamp Mount Lock Collar B1 B2 B3 B4 B5 C1 C2 C3 C4 C5 C6 D1 D2 D3 MD45-Series Φ56 M45 X 1.5P M45 X1.5P Φ M45 X 1.5P M8 X 60L Φ58 M45 X 1.5P 9 MD64- Series Φ75 M64 X 2.0P M64 X 2.0P Φ M64 X 2.0P M10 X 80L Φ80 M64 X 2.0P 11 MD85-Series Φ98 M85 X 2.0P M85 X 2.0P Φ M85 X 2.0P M12 X 100L Φ110 M85 X 2.0P 16 19

20 Hydraulic Buffers Description HDS series hydraulic buffers protect personnel and equipment safely. The robust and large bore buffers are so Custom-orificed to suit any impact load and speed that it provides a smooth constant deceleration throughout the stroke. To optimize its performance, buffers are individually simulated for various operating conditions and manufactured with over 90% of efficiency. Upon impact, the displacement of piston rod forces the oil through orifices on throttle port into the nitrogen chamber, generating oil pressure. The compressed nitrogen produces recoil force to extend piston rod to its original position. PISTON SEL GS CHMBER ORIFICE THROTTLE PORT BUFFER HED PISTON ROD FLOTING PISTON BODY RER MOUNT OIL CHMBER Features Deceleration : Custom - orificed design Piston Rod : Hardened, hard chrome plated Body : Epoxy painted Temperature : -20 ~ +80 C Special : -40 ~ +10 C Standard : OSH, ISE, CMM, DIN, FEM HDS Series Ordering Information HDS FR - BC Mount Type : mm Body Dia. HDS : Gas Return type C : Safety Cable CU : Urethane Cap B : Bellows FR : Rear Flange Mount FF : Front Flange Mount CR : Rod Clevis CE : End Clevis TF : Front & Rear Flange Mount RF : Rear Flange Front Foot Mount FM : Front & Rear Foot Mount 20

21 Hydraulic Buffers Hydraulic Buffers Symbols Useful Formulas Symbol Unit Description W kg Weight Symbol Unit Description r m Radius of rotation Maximum Shock Force F S = E T / S / F D WE kg Designed weight g m / s² Gravitational acceleration S = V² / 2 / d / 0.8 H m Height S m d m / s² Deceleration E K Nm Kinetic energy Deceleration d = V² / 2 / S / 0.8 V m / s Impact velocity E W Nm Work energy VE m / s Designed velocity E T Nm Total energy Deceleration Time t = 2.6 X S / V ω rad / s ngular velocity F D N Propelling force Ⅰ Nms² Mass moment F S N Impact force T Nm Torque η Efficiency rate Buffer Sizing rrangement Design Speed (VE) Design Weight (WE) V W V 2 2W V₁ + V₂ W₁ x W₂ W₁ + W₂ V₁ + V₂ 2 2 x W₁ x W₂ W₁ + W₂ 21

22 Hydraulic Buffers. Horizontal Mass without Propelling Force B. Horizontal Mass with Propelling Force [Motor] Weight W = 100ton Weight W = 160ton Impact velocity V = 0.5m/s Propelling force FD = 20kN Impact velocity V = 1.5m/s EK = W X V² / X0.5² / knm Select with Ek : HDS ET = EK + EW knm FS = ET / (S x η) + FD 12.5 / (0.2 X 0.8) kn Select with ET & FS : HDS EK = W X V² / X1.5² / knm Select with Ek : HDS EW = FD X S 20 X knm ET = EK + EW knm FS = ET / (S x η) + FD 188 / (0.4 X 0.8) kn Select with ET & FS : HDS C. Free Falling Mass D. Swiveling Mass with Propelling Force Torque r ω H S S Weight W = 4ton Height H = 0.3m Torque T = 200 Nm ngular velocity ω = 2 rad / s Radius of rotation r = 8 m Mass moment Ⅰ = 35 Nms² S = 0.2 m E K = W X g X H 4 X 9.81 X knm Select with Ek : HDS E W = W X g X S 4 X 9.81 X knm ET = EK + EW knm FS = ET / (S x η) + FD / (0.1 X 0.8) kn Select with ET & FS : HDS EK = ⅠX ω² / 2 35 X 2² / 2 70 knm Select with Ek : HDS EW = T X S / r 200 X 0.2 / 8 5 knm ET = EK + EW knm FS = ET / (S x η) + FD 75 / (0.2 X 0.8) kn Select with ET & FS : HDS

23 Hydraulic Buffers HDS 65 Series Engineering Data (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Recoil Force (kn) Ext. Comp. Weight (kg) HDS Ø Rear Mount Ø65 B C Front Mount Ø Ø65 Ø16 Dimensions (mm) Rear Type B Front Type C Mounting Bolt Size HDS

24 HDS 85 Series Engineering Data (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Recoil Force (kn) Ext. Comp. Weight (kg) HDS Ø Rear Mount Ø85 B C Ø Front Mount Ø85 Ø18 Dimensions (mm) Rear Type B Front Type C Mounting Bolt Size HDS

25 Hydraulic Buffers HDS 100 Series Engineering Data (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Recoil Force (kn) Ext. Comp. Weight (kg) HDS Ø Rear Mount Ø100 B C 150 Front Mount Ø Ø100 Ø18 Dimensions (mm) Rear Type B Front Type C Mounting Bolt Size HDS

26 HDS 120 Series Engineering Data (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Recoil Force (kn) Ext. Comp. Weight (kg) HDS Ø Rear Mount Ø120 B 220 Ø C Front Mount Ø120 Ø26 Dimensions (mm) Rear Type B Front Type C Mounting Bolt Size HDS

27 Hydraulic Buffers HDS 140 Series Engineering Data (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Recoil Force (kn) Ext. Comp. Weight (kg) HDS Ø Rear Mount Ø B C Ø Front Mount Ø140 Ø26 Dimensions (mm) Rear Type B Front Type C Mounting Bolt Size HDS

28 Stacker Crane Buffers Description LDS series Stacker Crane Buffers are mainly used for automated storage system and are available in large capacity rated up to 930 knm with the stroke 1200mm. LDS series are designed to maintain comparatively low peak and recoil forces. So they are able to provide minimum resistance in normal operation and to offer smooth deceleration in emergency stop. Basically, LDS series are similar with HDS series in operating principle. However as the nitrogen volume is considerably greater than displaced oil volume, it compresses the nitrogen slightly and produces low recoil force. pplication Stacker cranes, Small over head cranes, utomotive production lines, Theme park riders Features Deceleration : Custom orifice Recoil force : Low peak and recoil force Piston rod : Hardened, hard chrome plated Cylinder : Zinc plated Temperature : -20 ~ + 80 (Normal type) -40 ~ +100 (Special type with Special seal and oil) Impact velocity : Max. 6 m/s (Special piston rod : Hardened steel) Standard : OSH, ISE, CMM, DIN, FEM Option : Protective bellows, Safety cable, Urethane cap, Large cap LDS Series Ordering Information LDS FM - B LD : MODEL Bore DI'(mm) (mm) B : Bellows C : Safety cable RM : Rear flange & Front mount FM : Front & Rear mount FF : Front Flange FR : Rear Flange FR : Rear Flange RM : Rear flange & Front mount B : Bellows FF : Front Flange FM : Front & Rear mount C : Safety cable 28

29 Hydraulic Buffers LDS 40 Series / LDS 50 Series LDS 40 Series Engineering Data (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Weight (kg) L1 L2 L3 L4 LDS , , , , L L2 STROKE 4-Ø Ø100 Ø49 65 Ø L3 L4 LDS 50 Series Engineering Data 20 2-Ø (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Weight (kg) L1 L2 L3 L4 LDS , , , , ,079 1,953 1, , ,279 2,351 1,319 1, , ,479 2,751 1,519 1, , ,689 3,171 1,729 1,462 L L2 STROKE 4-Ø Ø113 Ø59 76 Ø L3 L4 2-Ø

30 LDS 75 Series / LDS 100 Series LDS 75 Series Engineering Data (mm) Max. Energy / Cycle (knm) L L2 Max. Shock Force (kn) Ø45 Weight (kg) L1 L2 L3 L4 LDS , , , , ,025 1,905 1, , ,274 2,354 1,314 1, , ,474 2,754 1,514 1,260 STROKE 4-Ø Ø138 Ø L3 L4 LDS 100 Engineering Data 45 2-Ø (mm) Max. Energy / Cycle (knm) L L2 Max. Shock Force (kn) Ø65 Weight (kg) L1 L2 L3 L4 LDS , , , , ,048 1,844 1, ,150 2,048 1, ,252 2,252 1, , ,353 2,454 1,403 1, , ,553 2,854 1,603 1,276 STROKE 4-Ø Ø200 Ø L3 L4 2-Ø

31 Hydraulic Buffers LDS 125 Series / LDS 160 Series LDS 125 Series Engineering Data (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Weight (kg) L1 L2 L3 L4 LDS , , ,708 1, ,085 1,910 1, ,187 2,114 1, , ,390 2,520 1,450 1, , ,590 2,920 1,650 1,300 L L2 STROKE 4-Ø Ø215 Ø80 Ø L3 L4 2-Ø LDS 160 Series Engineering Data (mm) Max. Energy / Cycle (knm) Max. Shock Force (kn) Weight (kg) L1 L2 L3 L4 LDS , , , ,015 1,769 1, ,167 2,073 1, ,320 2,379 1,390 1, , ,472 2,683 1,542 1, , ,625 2,989 1,695 1,329 L2 L Ø100 STROKE 4-Ø Ø275 Ø L3 L4 2-Ø

32 ( ) -704 Gab-eul GreatValley, 32 Digital-ro 9-gil, Geumcheon-gu, Seoul, Korea Tel (Rep.) Fax