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series rb shock absorber series variations series basic type with cap or bumper (option) hexagon nut ? stopper nut (option) foot bracket page 1677 1684 1688 ? 2 hexagon nuts are attached for series rb and standard models rbq. series rb series rbq coolant resistant series rbl series rb series rbq m6, m8, m10, m14, m20, m27 thread o.d. size m10, m14, m20, m27 m16, m20, m25, m30, m32 optional specifications are not available for m6. 1673 absorbing impact and noise dampening to meet the high speed requirements of the modern world. shock absorber automatic adjustment to the most appropriate absorption performance specially designed orifice can absorb energy comprehensively and most appropriately in many different applications. this ranges from high speed low loads, to load speed high loads; without requiring additional adjustment of the shock absorber. example of comparison for drag characteristics ? drag waveform will vary depending on the operating conditions. drag stroke dashpot rubber bumper smc shock absorber (large energy) smc shock absorber (small energy) dashpot rubber bumper smc shock absorber (large energy) smc shock absorber (small energy) short type: series rbq shock absorber: series rb coolant resistant type: series rbl usable without a stopper nut the strong body can be positioned directly. a compact style that has been shortened lengthwise allowable eccentric angle is 5 suitable for absorption of rotation energy. usable without a stopper nut the strong body can be positioned directly. rb individual -x d- -x p1673-p1718-e.qxd 08.11.17 4:01 pm page 1673
2. operating conditions 3. specifications and operational instructions 4. calculation of kinetic energy e 1 5. calculation of thrust energy e 2 6. calculation of corresponding mass of impacting object me 7. selection of rb0604 2. operating conditions 3. specifications and operational instructions 4. calculation of kinetic energy e 1 5. calculation of thrust energy e 2 6. calculation of corresponding mass of impacting object me 7. selection of applicable model confirmation of specifications yes kinetic energy e 1 e 1 ? 0.125 thrust energy e 2 e 2 ? 0.157 corresponding mass of impacting object me selection of rb0604 yes me ? 2.3 1. type of impact collision speed (1) kinetic energy e 1 thrust energy e 2 absorbed energy e corresponding (2) mass of impacting object me cylinder stroke at load (horizontal) f 1 ? e 1 + e 2 confirmation of specifications yes kinetic energy e 1 e 1 ? 2.3 j thrust energy e 2 e 2 ? 9.4 j corresponding mass of impacting object me selection of applicable model yes select rb2015 me ? 260 kg model selection m = 1 kg = 0.5 m/s d = 10 mm p = 0.5 mpa n = 30 cycle/min t = 25 c m = 50 kg = 0.3 m/s d = 40 mm p = 0.5 mpa n = 20 cycle/min t = 25 c ? 2 1 2 e 2 2 1674 shock absorber technical data: series rb rb0604 satisfies me = 2.3 < 3 kg (max. corresponding mass of im- pacting object). ultimately, it will result in an operating frequency of 30 < 80, without causing a problem. use the formula ?bsorbed energy e = e 1 + e 2 = 0.282?to calculate me . substitute 0.282 for e and 0.5 for . model selection step selection example 1. type of impact 2. enumeration of operating conditions 3. specifications and operational instructions 4. calculation of kinetic energy e 1 5. calculation of thrust energy e 2 6. calculation of corresponding mass of impacting object me cylinder stroke at load (horizontal) cylinder stroke at load (downward) cylinder stroke at load (upward) conveyor stroke at load (horizontal) free horizontal impact free dropping impact rotating impact (with torque) symbol m h r d p f t n t operating condition impacting object mass collision speed dropping height angle speed distance between axis of cylinder and impact point bore size cylinder operating pressure thrust torque operation cycle ambient temperature friction coefficient unit kg m / sec m rad/sec m mm mpa n n ?m cycle / min c ensure that the collision speed, thrust, operation cycle, the ambient temperature and atmosphere fall within the specifications. ? be aware of the min. installation radius in the case of rotating impacts. using the equation suitable for the classifica- tion of impact. select any shock absorber as a provisional model. absorbed energy e = e 1 + e 2 corresponding mass of impacting object me = e 2 2 ?0.3 < 5 (max.) t ??0 (min.) < 25 < 80 (max.) f ? f 1 ?28 < 1961 (max.) ?0.5 < 1.0 (max.) t ??0 (min.) < 25 < 80 (max.) f ? f 1 ?39.3 < use formula to calculate e1 . substitute 50 for m and 0.3 for . use formula to calculate e1 . substitute 1.0 for m and 0.5 for . use the formula ?bsorbed energy e = e 1 + e 2 = 2.3 + 9.4 = 11.7 j? to calculate me . substitute 11.7 j for e and 0.3 for . according to data d , the tentative- ly selected rb2015 satisfies me = 260 kg < 400 kg at = 0.3. ulti- mately, it will result in an operat- ing frequency of n ?0 < 25, with- out causing a problem. substitute both absorbed energy e and collision speed for data a in order to calculate the cor- responding mass of the impacting object me . provisionally select a model rb2015 and make the use of data b . according to d = 40, e 2 is obtained. provisionally select a model rb0604 and make the use of data b at left . according to d = 10, e 2 is obtained. in the case of thrust energy of cylinder e 1 , substitute respective figures for data b or data c . cylinder load shock absorber in the case of cylinder stroke at load and free horizontal impact, substitute respective figures for data a in order to calculate e 1 . 7. selection of applicable model in order for the shock absorbers to operate accurately for long hours, it is necessary to select a model that is well-suited to your operating conditions. if the impact energy is smaller than 5% of the maximum energy absorption, select a model that is one class smaller. caution on selection taking into consideration the corresponding mass of the impacting object me , calculated using data d and collision speed , check provisional model compatibility with the condition of application. if this is satisfactory, then the said provisional model will be the applicable one. p1673-p1718-e.qxd 08.11.17 4:02 pm page 1674
1. type of impact type of impact collision speed (1) kinetic energy e 1 thrust energy e2 absorbed energy e corresponding (2) mass of impacting object me cylinder stroke at load (downward) cylinder stroke at load (upward) conveyor stroke at load (horizontal) free dropping impact m g ?s 2gh m ?g ?h m ?g ?s e 1 + e 2 rotating impact (with torque) ?r e 1 + e 2 t ? s r collision speed (m/s) 100 50 40 30 20 10 5 4 3 2 1 0.5 0.4 0.3 0.2 0.1 0.1 0.2 0.3 0.4 0.5 1 collision speed (m/s) impact object mass m or corresponding mass me (kg) impact object mass m or corresponding mass me (kg) rb0604 rb 0805 to 2725 1675 note 1) collision speed is momentary velocity at which object is impacting against shock absorber. note 2) an ?mpact body equivalent mass?is the mass of an impact object without involving thrust, into which an object? total energy has been converted. hence, e = me 2 note 3) for the formula of moment of inertia (kg? 2 ), refer to the catalog of rotary actuator. e 1 or e data a kinetic energy e 1 or energy absorption e ? ?m ? 2 1 2 e 2 2 f 1 ?s + m ?g ?s e 1 + e 2 1 2 ? ?m ? 2 e 2 1 2 ? ?m ? 2 2 e 2 2 e 2 2 e 1 + e 2 ? ?m ? 2 1 2 e 2 2 f 1 ?s + m ?g ?s e 1 + e 2 load load load load load cylinder cylinder symbol d e e 1 e 2 f 1 g h n p r s t t m me specifications bore size absorbed energy kinetic energy thrust energy cylinder thrust acceleration of gravity (9.8) dropping height moment of inertia around the center of gravity operating frequency cylinder operating pressure distance between axis of cylinder and impact point shock absorber stroke torque ambient temperature collision speed impact object mass angle speed friction coefficient unit mm j j j n m / s 2 m kg ?m 2 cycle / min mpa m m n ?m c m / s kg kg rad / s 1 2 (3) symbol corresponding mass of impact object shock absorber series rb rb individual -x d- -x p1673-p1718-e.qxd 08.11.17 4:02 pm page 1675
(operating pressure 0.5 mpa) (j) operating pressure (mpa) coefficient 0.9 1.8 0.8 1.6 0.7 1.4 0.6 1.2 0.5 1.0 0.4 0.8 0.3 0.6 0.2 0.4 0.1 0.2 model 12 15 25 11 7 6 5 0.071 0.196 0.442 0.785 1.23 2.01 3.14 4.91 7.79 12.6 19.6 30.7 38.5 50.3 63.6 78.5 123 177 0.085 0.236 0.530 0.942 1.47 2.41 3.77 5.89 9.35 15.1 23.6 36.8 46.2 60.3 76.3 94.2 147 212 0.099 0.274 0.619 1.10 1.72 2.81 4.40 6.87 10.9 17.6 27.5 43.0 53.9 70.4 89.1 110 172 247 0.156 0.432 0.972 1.73 2.70 4.42 6.91 10.8 17.1 27.6 43.2 67.5 84.7 111 140 173 270 389 0.170 0.471 1.06 1.88 2.95 4.83 7.54 11.8 18.7 30.2 47.1 73.6 92.4 121 153 188 295 424 0.212 0.589 1.33 2.36 3.68 6.03 9.42 14.7 23.4 37.7 58.9 92.0 115 151 191 236 368 530 0.353 0.982 2.21 3.93 6.14 10.1 15.7 24.5 39.0 62.8 98.2 153 192 251 318 393 614 884 6 10 15 20 25 32 40 50 63 80 100 125 140 160 180 200 250 300 stroke absorption (mm) rb 2725 rb 2015 rb 1412 rb 1411 rb 1007 rb 0806 rb 1006 rb 0805 4 0.057 0.157 0.353 0.628 0.981 ? ? ? ? ? ? ? ? ? ? ? ? ? rb0604 0.1 0.01 0.05 0.5 0.1 1 5 load mass (kg) load mass (kg) thrust energy at load mgs thrust energy at load mgs rb0604 rb 0805 to 2725 1676 bore size d (mm) data b thrust energy of cylinder f 1 s operating pressure other than 0.5 mpa: multiply by the following coefficient. data c thrust energy at load mgs data d corresponding mass of impacting object me collision speed (m/s) corresponding mass of impact object me (kg) the graph of corresponding mass of impacting object: at room temperature (20 to 25 c) series rb p1673-p1718-e.qxd 08.11.17 4:02 pm page 1676
rb 06 04 specifications RB0805 rbc0805 0.98 5 80 245 1.96 3.83 15 16 rb0806 rbc0806 2.94 6 80 245 1.96 4.22 15 16 rb1006 rbc1006 3.92 6 70 422 4.22 6.18 23 25 rb1007 rbc1007 5.88 7 70 422 4.22 6.86 23 25 rb1411 rbc1411 14.7 11 45 814 6.86 15.30 65 70 rb1412 rbc1412 19.6 12 45 814 6.86 15.98 65 70 rb2015 rbc2015 58.8 m20 x 1.5 15 25 1961 8.34 20.50 150 165 rb2725 rbc2725 147 m27 x 1.5 25 10 2942 8.83 20.01 350 400 0.05 to 5.0 ?0 to 80 (no freezing) basic type with cap extended retracted basic type with cap spring force (n) mass (g) max. energy absorption (j) note 1) thread o.d. size stroke (mm) max. corresponding mass of impacting object (1) (kg) collision speed (m/s) max. operating frequency (2) ( cycle/min ) max. allowable thrust (n) ambient temperature range ( c) model specifications rb rbc c c 14 12 08 shock absorber type nil c basic type with cap applicable model nil s j none with stopper nut add? 1 hex. nut (total: 3 pcs. ? ) option o.d thread?troke replacement part no./cap (resin part only) cap cap cannot be mounted for basic type. please place an order with cap type from the beginning. 08 10 14 rbc0805, 0806 rbc1006, 1007 rbc1411, 1412 20 27 rbc2015 rbc2725 m14 x 1.5 m10 x 1.0 m8 x 1.0 0.5 m6 x 0.75 4 3 0.3 to 1.0 80 150 3.05 5.59 5.5 rb0604 1677 shock absorber series rb ? 2 mounting hexagon nuts are attached as standard. basic type with cap note 1) the maximum energy absorption, the maximum corresponding mass of impacting object and maximum operating frequency are measured at room temperature (20 to 25 c). note 2) it denotes the values at the maximum energy absorption per one cycle. max. operating frequency can increase in proportion to energy absorption. how to order rb individual -x d- -x p1673-p1718-e.qxd 08.11.17 4:02 pm page 1677
! 2 ! 0 ! 1 q rt ioyweu! 3 e! 0 ! 7 ! 5 o! 4 t! 6 ! 3 qr y u i w ! 1 ! 2 component parts no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 rolled steel special steel special steel special steel special bearing material carbon steel copper piano wire copper alloy carbon steel bearing steel special steel nbr nbr nbr nbr nbr gray coated heat treated electroless nickel plated heat treated zinc chromated zinc chromated zinc chromated foam rubber only rb(c)2015, 2725 outer tube inner tube piston rod piston bearing spring guide lock ring return spring seal holder stopper steel ball set screw accumulator rod seal scraper gasket gasket no. 1 2 3 4 5 6 7 8 9 10 11 12 13 description outer tube piston spring guide piston rod stopper bearing return spring rod seal accumulator steel ball hexagon socket head cap screw hexagon nut operating oil material treatment free-cutting steel copper alloy stainless steel carbon steel stainless steel copper alloy piano wire nbr nbr bearing steel special steel carbon steel mineral oil nitriding nitriding zinc trivalent chromated foam rubber nickel plated nickel plated description material treatment component parts compressed extended compressed rb0604 rb 0805 to 2725 construction extended 1678 series rb p1673-p1718-e.qxd 08.11.17 4:02 pm page 1678
RB0805 rb0806 rb1006 rb1007 rbc0805 rbc0806 rbc1006 rbc1007 model basic type with cap with cap ? basic type dimensions 4 4 4 4 h hexagon nut 13.9 13.9 16.2 16.2 c 12 12 14 14 b 8.5 8.5 10 10 z 45.8 46.8 52.7 53.7 ll 54.3 55.3 62.7 63.7 ll 6.8 6.8 8.7 8.7 e 3 40.8 40.8 46.7 46.7 s 33.4 33.4 39 39 l 1.4 1.4 1.4 1.4 a 5 6 6 7 h 2.4 2.4 2.7 2.7 f 6.8 6.8 8.6 8.6 e 2 6.8 6.8 8.8 8.8 e 1 2.8 2.8 3 3 d m8 x 1.0 m8 x 1.0 m10 x 1.0 m10 x 1.0 mm rb1411 rb1412 rb2015 rb2725 rbc1411 rbc1412 rbc2015 rbc2725 model basic type with cap with cap ? basic type dimensions 6 6 6 6 h hexagon nut 21.9 21.9 31.2 41.6 c 19 19 27 36 b 13.5 13.5 17 23 z 78.3 79.3 88.2 124 ll 91.8 92.8 105.2 147 ll 12 12 18 25 e 3 67.3 67.3 73.2 99 s 58.8 58.8 62.2 86 l 12 12 18 25 k 11 12 15 25 h 3.5 3.5 4 5 f 12 12 18 25 e 2 12.2 12.2 18.2 25.2 e 1 5 5 6 8 d m14 x 1.5 m14 x 1.5 m20 x 1.5 m27 x 1.5 mm basic type: RB0805, rb0806, rb1006, rb1007 hexagon nut (2 pcs. standard equipment) with cap: rbc0805, rbc0806 rbc1006, rbc1007 ? other dimensions are the same as the basic type. basic type: rb1411, rb1412, rb2015, rb2725 with cap: rbc1411, rbc1412 rbc2015, rbc2725 ? other dimensions are the same as the basic type. dimensions rb0604 30 (9.2) 8 3 m6 x 0.75 8 22.5 2 0.9 3 (9.2) 1 32.5 28.5 ?.8 ? ? 4 m6 x 0.75 1679 cap cap bracket cap cap bracket shock absorber series rb rb individual -x d- -x p1673-p1718-e.qxd 08.11.17 4:02 pm page 1679
part no. m4 m5 m8 m10 m12 20 25 34 44 52 10 12 16 22 34 m8 x 1.0 m10 x 1.0 m14 x 1.5 m20 x 1.5 m27 x 1.5 32 40 54 70 80 7.5 9.5 12.5 19 25 4.5 drill, 8 counterbore depth 4.4 5.5 drill, 9.5 counterbore depth 5.4 9 drill, 14 counterbore depth 8.6 11 drill, 17.5 counterbore depth 10.8 13.5 drill, 20 counterbore depth 13 mounting bolt x t mm l h d 15 19 25 38 50 b rb08-x331 rb10-x331 rb14-x331 rb20-x331 rb27-x331 part no. rb08-x331 rb10-x331 rb14-x331 rb20-x331 rb27-x331 applicable absorber part no. ? order foot brackets separately. rb 0805, 0806 rb 1006, 1007 rb 1411, 1412 rb 2015 rb 2725 foot bracket for shock absorber available for the foot mounting bracket of series rb. dimensions rb06j rb08j rb10j rb14j rb20j rb27j dimensions part no. 9.2 13.9 16.2 21.9 31.2 41.6 c 8 12 14 19 27 36 b 3 4 4 6 6 6 h m6 x 0.75 m8 x 1.0 m10 x 1.0 m14 x 1.5 m20 x 1.5 m27 x 1.5 mm rb08s rb10s rb14s rb20s rb27s dimensions part no. basic type rbc08s rbc10s rbc14s rbc20s rbc27s with cap 15 15 20 25 33 f 9 11 15 23 32 d 23 23 31 40 51 h2 6.5 8 11 16 22 h1 13.9 16.2 21.9 31.2 41.6 c 12 14 19 27 36 b m8 x 1.0 m10 x 1.0 m14 x 1.5 m20 x 1.5 m27 x 1.5 mm rbc08c rbc10c rbc14c rbc20c rbc27c dimensions part no. 6 7.5 10 20 25 sr 6.8 8.7 12 18 25 b 6.5 9 12.5 16 21 a for cap type for basic type 1680 stopper nut material: polyurethane hexagon nut (2 pcs. standard equipment) option replacement parts cap these are the replace- ment part for the cap type. not available for the basic type. ? ) ( series rb p1673-p1718-e.qxd 08.11.17 4:02 pm page 1680
selection series rb specific product precautions 1 be sure to read before handling. refer to front matters 42 and 43 for safety instructions. 1681 operating environment caution danger warning 6. drag characteristics in general, the values of drag (reactive force generated during operation) generated by the operating speed will vary in hydraulic shock absorber. and then, by adopting ?orous orifice construction? the rb series can adapt to such this fast/slow speed and can absorb shock smoothly in a wide range of speed. but, the speed reduction (speed reduction g) would be larger around the stroke terminal, depending upon the operating conditions. please note that it might be encountered that stroke time is long, motion is not smooth, etc. if this would be a problem, we recommend that stroke amount should be restricted by using our optional component like ?topper nut? etc. danger warning caution 1. energy absorption select a model so that the aggregated energy of impact object should not exceed the maximum absorption energy. otherwise, it could cause changes in properties or result in damaging the shock absorber. 2. corresponding mass of impacting object make a model selection, so that the corresponding mass of impacting object does not exceed the allowable range. pulsation will occur in buffer and deceleration force, thus making it difficult to absorb shock smoothly. 3. collision speed use it in the conditions that collision speed is within the specified range. it could cause the changes in buffer characteristics or lead to damage a shock absorber. 1. static load design the system, so that any other forces than the buffer capacity or impacts should not be applied to the piston rod which is stopped at the retracted state. 1. maximum operating frequency design the system in the conditions under which it is not used at the frequency exceeding the specified maximum operating frequency. (but, the maximum operating frequency will vary depending on the absorbed energy.) 2. stroke the maximum absorption energy in the specifications cannot be exerted unless the full stroke is used for both series rb and rbl. 3. work surface of an impact object the contact surface of the impact object with which the piston rod comes into contact must be highly rigid. in the case without a cap, a high surface compression load is applied to the contact surface of the impact body with which the piston rod comes into contact. therefore, the contact surface must be highly rigid (hardness of hrc35 or more). 4. be aware of the return force of the impact object. if used in a conveyor drive, after the shock absorber has absorbed energy, it could be pushed back by the spring that is built-in. for the spring force in the specifications, refer to the column (page 1677). 5. selection of size as the number of operation proceeds, the maximum absorption energy of shock absorbers will be decreased by the following reasons such as abrasion, or deterioration, etc. of the internal working fluid. taking this into consideration, selecting a size which is 20 to 40% affordable against the amount of absorption energy is recommended. caution 1. temperature range do not use it, exceeding the specified allowable temperature range. seal could be softened or hardened or worn out, or leading to leak a working fluid, deterioration, or impact characteristic changes. 2. deterioration by atmosphere do not use the product in an environment where the product may be damaged by salt or air which contains organic solvent, phosphoester operating oil, sulfurous acid gas, chlorine gas or other acids. it may deteriorate seals or corrode metals. 3. deterioration by ozone do not use it under the direct sunlight on the beach, or by the mercury lamp, or the ozone generator, because the rubber material will be deteriorated by ozone. 4. cutting oil, water, blown dust do not use the product under the condition, where the liquid such as cutting oil, water, solvent, etc. is exposed either directly or in atomized form to the piston rod, or where blown dust could be adhered around the piston rod. this could cause malfunction. 1. operation in an environment which requires explosion-proof when mounting in places where static electricity is accumulated, implement a distribution of electrical energy by grounding. do not use the materials for buffer face which might cause to spark by collision. 1. pressure do not use it in the vacuum state, which is substantially different from the atmospheric pressure (above sea level) and in the atmosphere under being pressurized. 2. using inside a clean room do not use the shock absorber in a clean room, as it could contaminate the clean room. rb individual -x d- -x p1673-p1718-e.qxd 08.11.17 4:02 pm page 1681
operating environment mounting mounting model m10 x 1.0 3.14 ?.1 +0.1 0 o.d. thread (mm) tightening torque (n ?m) thread prepared bore (mm) rb(c)1006 rb(c)1007 m8 x 1.0 1.67 ?.1 +0.1 0 rb(c)0805 rb(c)0806 m27 x 1.5 62.8 25.7 +0.1 0 rb(c)2725 m20 x 1.5 23.5 18.7 +0.1 0 rb(c)2015 m14 x 1.5 10.8 12.7 +0.1 0 rb(c)1411 rb(c)1412 model o.d. thread (mm) tightening torque (n ?m) thread prepared bore (mm) m6 x 0.75 0.85 ?.3 +0.1 0 rb0604 model s (stroke) 4 5 6 6 7 11 12 15 25 76 96 115 115 134 210 229 287 478 3 2 (allowable rotating angle) r (min. installation radius) rb0604 rb 0805 rb 0806 rb 1006 rb 1007 rb 1411 rb 1412 rb 2015 rb 2725 installation conditions for rotating impact (mm) series rb specific product precautions 2 be sure to read before handling. refer to front matters 42 and 43 for safety instructions. 1682 load on mounting plate n ? 2 e (absorbed energy : j) s (stroke : m) caution 5. vibration when vibrations are applied on impact objects, implement a secure guide on impact objects. warning 1. before performing installation, removal, or stroke adjustment, make sure to cut the power supply to the equipment and verify that the equipment has stopped. 2. installation of protective cover we recommend the protective cover should be installed in the case workers might be getting close during the operation. 3. the rigidity of the mounting frame the mounting frame must have sufficient rigidity. load on mounting plate can be calculated as follows. depending on the impact conditions, a load applied to the mounting frame may exceed the calculated value. when setting the rigidity of the mounting frame, the sufficient safety ration must be taken into account in the calculated value. caution 1. tightening torque of mounting nut should be as follows. when threading on a mounting frame in order to mount a shock absorber directly, prepared hole dimensions are referred to the table below. for tightening torque of a nut for shock absorber, kindly abide by the table below. if the tightening torque that is applied to the nut exceeds the value given below, the shock absorber itself could become damaged. caution 2. deviation of impact the installation must be designed so that the impact body is perpendicular to the shock absorber's axial center. an angle of deviation that exceeds 3 will place an excessive load on the bearings, leading to oil leaks within a short period of operation. 3. rotating angle if rotating impacts are involved, the installation must be designed so that the direction in which the load is applied is perpendicular to the shock absorber? axial center. the allowable rotating angle until the stroke end must be 2 < 3 . 4. do not scratch the sliding portion of the piston rod or the outside threads of the outer tube. failure to observe this precaution could scratch or gouge the sliding potion of the piston rod, or damage the seals, which could lead to oil leakage and malfunction. furthermore, damage to outside threaded portion of the outer tube could prevent the shock absorber from being mounted onto the frame, or its internal components could deform, leading to a malfunction. 5. never turn the screw on the bottom of the body. this is not an adjusting screw. turning it could result in oil leakage. load allowable eccentric angle 1 < 3 allowable rotating eccentric angle 2 < 3 piston rod bottom set screw (do not rotate) damage is not allowed. p1673-p1718-e.qxd 08.11.17 4:02 pm page 1682
mounting maintenance storage service life and replacement period of shock absorber note) specified service life (suitable replacement period) is the value at room temperature (20 to 25 c). the period may vary depending on the temperature and other conditions. in some cases the absorber may need to be replaced before the allowable operating cycle above. 1.2 million cycles rb0604, rb08 2 million cycles rb10 to rb2725 1 million cycles rba , rbl series rb specific product precautions 3 be sure to read before handling. refer to front matters 42 and 43 for safety instructions. 1683 s: shock absorber stroke (catalog values) stopper nut caution 6. adjust the stopping time through the use of the stopper nut, as follows: control the stopping time of the impact object by turning the stopper nut in or out (thus changing length ??. after establishing the stopper nut position, use a hexagon nut to secure the stopper nut in place. caution 1. check the mounting nut is not loosen. the shock absorber could become damaged if it is used in a loose state. 2. pay attention to any abnormal impact sounds or vibrations. if the impact sounds or vibrations have become abnormally high, the shock absorber may have reached the end of its service life. if this is the case, replace the shock absorber. if use is continued in this state, it could lead to equipment damage. 3. confirm that abnormality, oil leakage, etc. in the outward surface. when a large amount of oil is leaking, replace the product, because it is believed to be happening something wrong with it. if it keeps on using, it may cause to break the equipment which is mounted by this product. 4. inspect the cap for any cracks or wear. if the shock absorber comes with a cap, the cap could wear first. to prevent damage to the impact object, replace the cap often. caution 1. allowable operating cycle under the specifications set in this catalog is shown below. caution 1. piston rod position while stored if a piston rod is stored as pushed in for a long period of time (over 30 days), absorption capacity may decrease. avoid storing like this for a long time. rb individual -x d- -x p1673-p1718-e.qxd 08.11.17 4:02 pm page 1683
specifications l c 14 12 shock absorber coolant resistant type component parts no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 material treatment description outer tube inner tube piston rod piston bearing spring guide lock ring return spring seal holder stopper steel ball set screw accumulator rod seal scraper gasket gasket rolled steel special steel special steel special steel special bearing material carbon steel copper piano wire copper alloy carbon steel bearing steel special steel nbr nbr nbr nbr nbr gray coated heat treated electroless nickel plated heat treated zinc chromated zinc chromated zinc chromated foam rubber only rbl(c)2015, 2725 10 14 rblc1006, 1007 rblc1411, 1412 20 27 rblc2015 rblc2725 can be operated in an environ- ments exposed to non-water soluble cutting oil. (mainly jis class 1 equivalent) basic type with cap rb rbl1006 rblc1006 3.92 6 70 422 4.22 6.18 26 28 rbl1007 rblc1007 5.88 7 70 422 4.22 6.86 26 28 rbl1411 rblc1411 14.7 11 45 814 8.73 14.12 70 75 rbl1412 rblc1412 19.6 12 45 814 8.73 14.61 70 75 rbl2015 rblc2015 58.8 m20 x 1.5 15 25 1961 11.57 17.65 150 165 rbl2725 rblc2725 147 m27 x 1.5 25 10 2942 22.16 38.05 365 410 0.05 to 5 ?0 to 80 non-water soluble cutting oil basic type with cap extended retracted basic type with cap mass (g) spring force (n) max. energy absorption (j) (1) thread o.d. size stroke absorption (mm) collision speed (m/s) max. operating frequency (2) ( cycle/min ) max. allowable thrust (n) ambient temperature range ( c) effective atmosphere model specifications m14 x 1.5 m10 x 1.0 rbc c 10 type nil c basic type with cap applicable model nil s j none with stopper nut add? 1 hex. nut (total: 3 pcs. ? ) option o.d thread?troke replacement part no./cap (resin part only) cap cap cannot be mounted for basic type. please place an order with cap type from the beginning. 1684 shock absorber: coolant resistant type series rbl construction scraper and rod seal combine to form a double seal enclosure preventing cutting oil from entering inside. note 1) the maximum energy absorption and maximum operating frequency are measured at room temperature (20 to 25 c). note 2) it denotes the values at the maximum energy absorption per one cycle. max. operating frequency can increase in proportion to energy absorption. ? 2 mounting hexagon nuts are attached as standard. how to order p1673-p1718-e.qxd 08.11.17 4:02 pm page 1684
rbl1006 rbl1007 rblc1006 rblc1007 model basic type with cap with cap ? basic type dimensions 4 4 h hexagon nut 16.2 16.2 c 14 14 b 10 10 z 57.5 58.5 ll 67.5 68.5 ll 8.7 8.7 e 3 51.5 51.5 s 43.8 43.8 l 1.4 1.4 a 6 7 h 2.7 2.7 f 8.6 8.6 e 2 8.8 8.8 e 1 3 3 d m10 x 1.0 m10 x 1.0 mm rbl1411 rbl1412 rbl2015 rbl2725 rblc1411 rblc1412 rblc2015 rblc2725 model basic type with cap with cap ? basic type dimensions 6 6 6 6 h hexagon nut 21.9 21.9 31.2 41.6 c 19 19 27 36 b 13.5 13.5 17 23 z 83.1 84.1 88.2 129.5 ll 96.6 97.6 105.2 152.5 ll 12 12 18 25 e 3 72.1 72.1 73.2 104.5 s 63.6 63.6 62.2 91.5 l 12 12 18 25 k 11 12 15 25 h 3.5 3.5 4 5 f 12 12 18 25 e 2 12.2 12.2 18.2 25.2 e 1 5 5 6 8 d m14 x 1.5 m14 x 1.5 m20 x 1.5 m27 x 1.5 mm rb10j rb14j rb20j rb27j dimensions part no. 16.2 21.9 31.2 41.6 c 14 19 27 36 b 4 6 6 6 h m10 x 1.0 m14 x 1.5 m20 x 1.5 m27 x 1.5 mm rb10s rb14s rb20s rb27s dimensions part no. basic type rbc10s rbc14s rbc20s rbc27s with cap 15 20 25 33 f 11 15 23 32 d 23 31 40 51 h 2 8 11 16 22 h 1 16.2 21.9 31.2 41.6 c 14 19 27 36 b m10 x 1.0 m14 x 1.5 m20 x 1.5 m27 x 1.5 mm rbc10c rbc14c rbc20c rbc27c dimensions part no. 7.5 10 20 25 sr 8.7 12 18 25 b 9 12.5 16 21 a note) l, ll and s dimensions are different from those of rb(c) (except rbl(c)2015). note) l, ll and s dimensions of rbl(c)1007/1006 are different from those of rb(c)1007/1006. basic type: rbl1006, rbl1007 with cap: rblc1006, rblc1007 ? other dimensions are the same as the basic type. ? other dimensions are the same as the basic type. for cap type cap with cap: rblc1411?blc1412 rblc2015?blc2725 basic type: rbl1411?bl1412?bl2015?bl2725 dimensions 1685 for basic type material: polyurethane option stopper nut replacement parts cap cap bracket cap cap bracket hexagon nut (2 pcs. standard equipment) these are the replace- ment part for the cap type. not available for the basic type. ? ) ( shock absorber: coolant resistant type series rbl rb individual -x d- -x p1673-p1718-e.qxd 08.11.17 4:02 pm page 1685
part no. m4 m5 m8 m10 m12 20 25 34 44 52 10 12 16 22 34 m8 x 1.0 m10 x 1.0 m14 x 1.5 m20 x 1.5 m27 x 1.5 32 40 54 70 80 7.5 9.5 12.5 19 25 4.5 drill, 8 counterbore depth 4.4 5.5 drill, 9.5 counterbore depth 5.4 9 drill, 14 counterbore depth 8.6 11 drill, 17.5 counterbore depth 10.8 13.5 drill, 20 counterbore depth 13 mounting bolt x t mm l h d 15 19 25 38 50 b rb08-x331 rb10-x331 rb14-x331 rb20-x331 rb27-x331 part no. rb08-x331 rb10-x331 rb14-x331 rb20-x331 rb27-x331 applicable absorber part no. ? order foot brackets separately. rb 0805, 0806 rb 1006, 1007 rb 1411, 1412 rb 2015 rb 2725 foot bracket for shock absorber available for the foot mounting bracket of series rbl. dimensions 1686 series rbl p1673-p1718-e.qxd 08.11.17 4:02 pm page 1686

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