Basic type. With cap. Max. energy absorption (J) Stroke absorption (mm) Collision speed (m/s)

Transcription

1 ock Absorber eries R pecifications R8 R8 R R R1 R1 R R pecifications R8 R8 R R R1 R1 R R Max. energy absorption () troke absorption ollision speed (m/s). to. Max. operating frequency (cycle/min) Max. allowable trust (N) Ambient temperature range ( ) to 8 (No freezing) pring force Extended (N) Retracted Weigt (g) It denotes te values at te maximum energy absorption per one cycle. Max. operation cycle/min can increase in proportion to energy absorption. ow to Order onstruction Extended ompressed -- Nil R usion 1 Replacement part no./ap (Resin part only) 8 1 O.D tread troke absorption R8, 8 R, R1, 1 Option Nil None Wit stopper nut Add l 1 ex. nut (Total: 3 pcs. ) mounting exagon nuts are attaced as standard. R 8 Applicable model R R ap cannot be mounted for basic type. Please place an order wit cap type from te beginning. omponent Parts No. q w e r t y u i o!!1!!3!!!! Description Outer tube Inner tube Piston rod Piston earing pring guide Lock ring Return spring eal older topper teel ball et screw Accumulator Rod seal craper Gasket Gasket Material Rolled steel pecial bearing material arbon steel opper Piano wire opper alloy arbon steel earing steel ap Treatment Gray coated eat treated Electroless nickel plated eat treated Foam rubber Only R(),

2 ock Absorber eries R : R8, R8, R, R : R8, R8 R, R Oter dimensions are te same as te basic type. ap ap bracket RE A RE X Y R8 R8 R R R8 R8 R R D E F.... dimensions a L MM M8 x 1. M8 x 1. M x 1. M x E Z exagon nut MQ Q M R MK() R Q G : R1, R1, R, R R1 R1 R R exagon Nut R8 R R1 R R R1 R1 R R ( pcs. standard equipment) MM M8 x 1. M x 1. 1 M1 x 1. M x 1. M x 1. 3 D E F Option topper nut For basic type dimensions R8 R8 R R R1 R1 R R R R 1 3 K L MM M1 x 1. M1 x 1. M x 1. M x 1. MM 3 M8 x 1. 3 M x M1 x 1. M x 1. 1 M x 1. : R1, R1 R, R Oter dimensions are te same as te basic type. ap ap bracket For cap type d f 33 E Z exagon nut Replacement Parts ap ( Tese are te replacement part for te cap type. Not available for te basic type. Material: Polyuretane A R R8 R R1 R R ) --3 R A RZQ MI W EP1 E ML G- V MVGQ R D- -X - Data

3 eries R/ ock Absorber Tecnical Data: election election tep 1. Type of impact ylinder stroke at load (orizontal) ylinder stroke at load (Downward) ylinder stroke at load (Upward) onveyor stroke at load (orizontal) Free orizontal impact Free dropping impact Rotating impact (Wit torque). Enumeration of operating conditions ymbol Operating condition Unit m Impacting object weigt kg ollision speed m/sec Dropping eigt m ω Angle speed rad/sec r Distance between axis of cylinder and impact point m d ore size mm p ylinder operation pressure MPa F Trust N T Torque N m n Operation cycle cycle/min t Ambient temperature µ Friction coefficient 3. pecifications and operational instructions Ensure tat te collision speed, trust, operation cycle, te ambient temperature and atmospere fall witin te specifications. e aware of te min. installation radius in te case of rotating impacts. election Example 1. Type of impact ollision speed (1) Kinetic energy Trust energy E Absorbed energy E orresponding () weigt of impacting object Me. Operating conditions 3. pecifications and operational instructions ylinder stroke at load (orizontal) ylinder ock absorber m 1 F1 + E E m = kg =.3 m/s d = mm p =. MPa n = cycle/min t = onfirmation of specifications.3 < (max.) t (min.) < < 8 (max.) F F1 8 < 1 (max.) YE 1. Type of Impact Type of impact ollision speed (1) Kinetic energy Trust energy E Absorbed energy E orresponding () weigt of impacting object Me ylinder stroke at load (Downward) m 1 E ylinder F1 + m g + E Note 1) ollision speed is momentary velocity at wic object is impacting against sock absorber. Data A Kinetic Energy or Energy Absorption E. alculation of kinetic energy Using te equation suitable for te classification of impact. In te case of cylinder stroke at load and free orizontal impact, substitute respective figures for Data A in order to calculate.. alculation of trust energy E elect any sock absorber as a provisional model. In te case of trust energy of cylinder, substitute respective figures for Data or Data.. alculation of corresponding weigt of impacting object Me Absorbed energy E = + E orresponding weigt of impacting object Me = E ubstitute bot absorbed energy E and collision speed for Data A in order to calculate te corresponding weigt of te impacting object.. election of applicable model Taking into consideration te corresponding weigt of te impacting object Me, calculated using Data D and collision speed, ceck provisional model compatibility wit te condition of application. If tis is satisfactory, ten te said provisional model will be te applicable one. aution on election In order for te sock absorbers to operate accurately for long ours, it is necessary to select a model tat is well-suited to your operating conditions. If te impact energy is smaller tan % of te maximum energy absorption, select a model tat is one class smaller. --. alculation of kinetic energy. alculation of trust energy E. alculation of corresponding weigt of impacting object Me. election of applicable model Kinetic energy Use Formula to calculate. ubstitute for m and.3 for..3 Trust energy E Provisionally select a model R and make te use of Data. According to d =, E is obtained. E 9. orresponding weigt of impacting object Me Use te formula Absorbed energy E = + E = =. to calculate Me. ubstitute. for E and.3 for. Me kg election of applicable model According to Data D, te tentatively selected R satisfies Me = kg < kg at =.3. Ultimately, it will result in an operating frequency of n <, witout causing a problem. YE elect R Impact object weigt m or corresponding weigt Me (kg) or E ollision speed (m/s)

4 ock Absorber eries R ylinder stroke at load (Upward) ore size d troke absorption F1 m g + E E Operating pressure (MPa) oefficient ylinder m 1 (Operating pressure. MPa) onveyor stroke at load (orizontal) E. 1. m g µ + E Free dropping impact g m g m g + E E Rotating impact (Weigt torque) ω R 1 Ι ω T R + E E Note ) An Impact body equivalent weigt is te weigt of an impact object witout involving trust, into wic an object s total energy as been converted.), refer to te catalog of 1 rotary actuator. ence, E = Me Note 3) For te formula of moment of inertia Ι (kg m ), refer to te catalog of rotary actuator. R R 8 8 R m 1 Data Trust Energy of ylinder F1 R R R R 1 1 () R Operating pressure oter tan. MPa: Multiply by te following coefficient. Data Trust Energy at m g s Trust energy at load m g s weigt (kg) ymbol ymbol d E E F1 g Ι (3) n p R T t m Me ω µ pecifications ore size Absorbed energy Kinetic energy Trust energy ylinder trust Acceleration of gravity (9.8) Dropping eigt Moment of inertia around te center of gravity Operating frequency ylinder operation pressure Distance between axis of cylinder and impact point ock absorber stroke Torque Ambient temperature ollision speed Impact object weigt orresponding weigt of impact object Angle speed Friction coefficient Unit mm N m/s m kg m cycle/min MPa m m N m m/s kg kg rad/s Data D orresponding Weigt of Impacting Object Me orresponding weigt of impact object Me (kg) ollision speed (m/s) RE A RE X Y MQ Q M R MK() R Q G R A RZQ MI W EP1 E ML G- V MVGQ R D- -X - Data --

5 eries R Precautions e sure to read before andling. Refer to pages --3 to -- for afety Instructions and Actuator Precautions. Danger Warning aution Danger Warning election 1. Energy absorption elect a model so tat te aggregated energy of impact object sould not exceed te maximum absorption energy. Oterwise, it could cause canges in properties or result in damaging te sock absorber.. orresponding weigt of impacting object Make a model selection, so tat te corresponding weigt of impacting object does not exceed te allowable range. Pulsation will occur in buffer and deceleration force, tus making it difficult to absorb sock smootly. 3. ollision speed Use it in te conditions tat collision speed is witin te specified range. It could cause te canges in buffer caracteristics or lead to damage a sock absorber. 1. tatic load Design te system, so tat any oter forces tan te buffer capacity or impacts sould not be applied to te piston rod wic is stopped at te retracted state. 1. Maximum operating frequency Design te system in te conditions under wic it is not used at te frequency exceeding te specified maximum operating frequency. (ut, te maximum operating frequency will vary depending on te absorbed energy.). troke Te maximum absorption energy in te specifications cannot be exerted unless te full stroke is used for bot eries R and RL. 3. Work surface of an impact object Te contact surface of te impact object wit wic te piston rod comes into contact must be igly rigid. In te case witout a cap, a ig surface compression load is applied to te contact surface of te impact body wit wic te piston rod comes into contact. Terefore, te contact surface must be igly rigid (ardness of R3 or more).. e aware of te return force of te impact object. If used in a conveyor drive, after te sock absorber as absorbed energy, it could be pused back by te spring tat is built-in. For te spring force in te specifications, refer to te column (page --).. election of size As te number of operation proceeds, te maximum absorption energy of sock absorbers will be decreased by te following reasons suc as abrasion, or deterioration, etc. of te internal working fluid. Taking tis into consideration, selecting a size wic is to % affordable against te amount of absorption energy is recommended.. Drag caracteristics In general, te values of drag (reactive force generated during operation) generated by te operating speed will vary in ydraulic sock absorber. And ten, by adopting Porous orifice construction, te R series can adapt to suc tis fast/slow speed and can absorb sock smootly in a wide range of speed. ut, te speed reduction (speed reduction G) would be larger around te stroke terminal, depending upon te operating conditions. Please note tat it migt be encountered tat stroke time is long, motion is not smoot, etc. If tis would be a problem, we recommend tat stroke amount sould be restricted by using our optional component like topper nut, etc. Including tis case, if te data on operational status (stroke time, reactive force, deceleration, etc.) are required, please consult wit M. Operating Environment 1. Operation in an environment wic requires explosion-proof Wen mounting in places were static electricity is accumulated, implement a distribution of electrical energy by grounding. Do not use te materials for buffer face wic migt cause to spark by collision. 1. Pressure Do not use it in te vacuum state, wic is substantially different from te atmosperic pressure (above sea level) and in te atmospere under being pressurized.. Using inside a clean room Do not use te sock absorber in a clean room, as it could contaminate te clean room. aution 1. Temperature range Do not use it, exceeding te specified allowable temperature range. eal could be softened or ardened or worn out, or leading to leak a working fluid, deterioration, or impact caracteristic canges.. Deterioration by atmospere Do not use in an atmospere suc as salt damage, sulfurous acid gas wic makes te metal corroded, or aving solvent, etc. wic makes seal deteriorated. 3. Deterioration by ozone Do not use it under te direct sunligt on te beac, or by te mercury lamp, or te ozone generator, because te rubber material will be deteriorated by ozone.. utting oil, water, blown dust Do not use te product under te condition, were te liquid suc as cutting oil, water, blown dust, solvent, etc. is exposed eiter directly or in atomized form to te piston rod, or were blown dust could be adered around te piston rod. Tis could cause malfunction.. Vibration Wen vibrations are applied on impact objects, implement a secure guide on impact objects. Warning Warning Mounting 1. efore performing installation, removal, or stroke adjustment, make sure to cut te power supply to te equipment and verify tat te equipment as stopped.. Installation of protective cover We recommend te protective cover sould be installed in te case workers migt be getting close during te operation. 3. Te rigidity of te mounting frame must be taken into consideration If te mounting frame lacks strengt, te sock absorber will vibrate after an impact, causing bearing wear and damage. on mounting plate can be calculated as follows. 1. Tigtening torque of mounting nut sould be as follows. Wen treading on a mounting frame in order to mount a sock absorber directly, prepared ole dimensions are referred to te table below. For tigtening torque of a nut for sock absorber, kindly abide by te table below. If te tigtening torque tat is applied to te nut exceeds te value given below, te sock absorber itself could become damaged. R()8 R() R()1 R()8 R() R()1 R() R() O.D. tread M8 x 1. M x 1. M1 x 1. M x 1. M x 1. Tread prepared bore Tigtening torque (N m) E (Absorbed energy ) on mounting plate N (troke m) ø ø ø ø ø Deviation of impact Te installation must be designed so tat te impact body is perpendicular to te sock absorber's axial center. An angle of deviation tat exceeds 3 will place an excessive load on te bearings, leading to oil leaks witin a sort period of operation. Allowable eccentric angle θ1 < 3 --

6 ock Absorber eries R Precautions e sure to read before andling. Refer to pages --3 to -- for afety Instructions and Actuator Precautions. Mounting 3. Rotating angle If rotating impacts are involved, te installation must be designed so tat te direction in wic te load is applied is perpendicular to te sock absorber s axial center. Te allowable rotating angle until te stroke end must be θ < 3. Allowable rotating eccentric angle θ < 3 Installation onditions for Rotating Impact R 8 R 8 R R R 1 R 1 R R. Do not scratc te sliding portion of te piston rod or te outside treads of te outer tube. Failure to observe tis precaution could scratc or gouge te sliding potion of te piston rod, or damage te seals, wic could lead to oil leakage and malfunction. Furtermore, damage to outside treaded portion of te outer tube could prevent te sock absorber from being mounted onto te frame, or its internal components could deform, leading to a malfunction.. Never turn te screw on te bottom of te body. Tis is not an adjusting screw. Turning it could result in oil leakage. Piston rod (troke) θ (Allowable rotating angle) ottom set screw (Do not rotate) Damage is not allowed. R (Min. installation radius) Adjust te stopping time troug te use of te stopper nut, as follows: ontrol te stopping time of te impact object by turning te stopper nut in or out (tus canging lengt a ). After establising te stopper nut position, use a exagon nut to secure te stopper nut in place. : ock absorber stroke (atalog values) 3 topper nut Maintenance aution 1. eck te mounting nut is not loosen. Te sock absorber could become damaged if it is used in a loose state.. Pay attention to any abnormal impact sounds or vibrations. If te impact sounds or vibrations ave become abnormally ig, te sock absorber may ave reaced te end of its service life. If tis is te case, replace te sock absorber. If use is continued in tis state, it could lead to equipment damage. 3. onfirm tat abnormality, oil leakage, etc. in te outward surface. Wen a large amount of oil is leaking, replace te product, because it is believed to be appening someting wrong wit it. If it keeps on using, it may cause to break te equipment wic is mounted by tis product.. Inspect te cap for any cracks or wear. If te sock absorber comes wit a cap, te cap could wear first. To prevent damage to te impact object, replace te cap often. RE A RE X Y MQ Q M R MK() R Q G R A RZQ MI W EP1 E ML G- V MVGQ R D- -X - Data --

7 ock Absorber: oolant Resistant Type eries RL an be operated in an environments exposed to non-water soluble cutting oil. (Mainly I lass 1 equivalent) craper and rod seal combine to form a double seal enclosure preventing cutting oil from entering inside. pecifications RL RL RL1 RL1 RL RL pecifications RL RL RL1 RL1 RL RL Max. energy absorption () troke absorption ollision speed (m/s). to Max. operating frequency (cycle/min) Max. allowable trust (N) Allowable temperature range ( ) Effective atmospere to 8 Non-water soluble cutting oil pring force (N) Extended Retracted Weigt (g) It denotes te values at te maximum energy absorption per one cycle. Max. operation cycle/min can increase in proportion to energy absorption. R L ow to Order 1 onstruction --8 oolant resistant type Nil usion Replacement part no./ap (Resin part only) R ap cannot be mounted for basic type. Please place an order wit cap type from te beginning. omponent Parts No. q w e r t y u i o!!1!!3!!!! Description Outer tube Inner tube Piston rod Piston earing pring guide Lock ring Return spring eal older topper teel ball et screw Accumulator Rod seal craper Gasket Gasket 1 Nil Applicable model RL, RL1, 1 Option mounting exagon nuts are attaced as standard. O.D. tread troke absorption Material Rolled steel pecial bearing material arbon steel opper Piano wire opper alloy arbon steel earing steel None Wit stopper nut Add l 1 ex. nut (Total: 3 pcs. ) RL RL ap Treatment Gray coated eat treated Electroless nickel plated eat treated Foam rubber Only RL(),

8 ock Absorber: oolant Resistant Type eries RL : RL, RL : RL, RL Oter dimensions are te same as te basic type. ap ap bracket RE A RE X Y dimensions D E F a L MM RL RL RL RL M x 1. M x 1. Note) L, and dimensions of RL()/ are different from tose of R()/ E Z 1 1 exagon nut MQ Q M R MK() : RL1, RL1, RL, RL : RL1, RL1 RL, RL Oter dimensions are te same as te basic type. ap ap bracket R Q G R A RZQ MI W EP1 E ML RL1 RL1 RL RL R R1 R R RL1 RL1 RL RL MM M x 1. 1 M1 x 1. M x 1. M x 1. 3 D E F topper nut For basic type R R R1 R1 R R R R dimensions K L Note) L, and dimensions of RL()/ are different from tose of R()/. exagon Nut ( pcs. standard equipment) Option MM M1 x 1. M1 x 1. M x 1. M x 1. For cap type MM 3 M x M1 x 1. M x 1. 1 M x 1. d f 33 E Z exagon nut Replacement Parts ( ap Tese are te replacement part for te cap type. Not available for te basic type. Material: Polyuretane A R R R1 R R ) G- V MVGQ R D- -X - Data --9

9 Please contact M for detailed dimensions, specifications, and lead times. eries R, RL Made to Order pecifications: Foot racket for ock Absorber Available for te foot mounting bracket of eries R. Part No. Applicable absorber R8-X331 R 8, 8 R-X331 R, R1-X331 R 1, 1 R-X331 R R-X331 R Order te foot bracket separately. R8-X331 R-X331 R1-X331 R-X331 R-X D. drill, 8 counterbore dept.. drill, 9. counterbore dept. 9 drill, 1 counterbore dept 8. drill, 1. counterbore dept drill, counterbore dept L 3 8 MM M8 x 1. M x 1. M1 x 1. M x 1. M x 1. T 1 3 X 3 Mounting bolt M M M8 M M --1