Series REH Specifications Bore size mm Fluid ction Maximum operating pressure Minimum operating pressure Proof pressure mbient and fluid temperature Piston speed ubrication Stroke length tolerance Piping type Piping port size 20 32 ir Double acting 0.7MPa (1psi) 0.2MPa (29psi) 1.05MPa (0psi) - to 0 C (14 to F) 70 to 300mm/s (2.75 to 12in/s) Non-lube 0 to 1.mm (0 to 0.071in) Centralized piping M5 x 0. Rc(PT) 1 / Standard Stroke Table Note: 1N = 0.224lb f 1kg = 2.204lb 1MPa = 145psi 1in =.4mm Bore size (mm) eight Table Number of axes Standard stroke (mm) 0, 200, 300 0, 200, 300, 400, 500 1 axis 20 200, 300, 400, 500, 00 200, 300, 400, 500, 00, 00 2 axes 200, 300, 400, 500, 00, 00, 00 32 Note 1) Contact SMC if the maximum stroke is exceeded. Note 2) Intermediate strokes are available by special order. Maximum Note 1) available stroke (mm) 500 750 00 1200 00 REH REH REH20 REHT REHT32 0 200 1.2(2.4) 1.3(2.) 2.5(5.512) 2.7(5.952) 3.5(7.71) 5.3(11.4) 300 1.(3.527) 3.2(7.055) 4.0(.1).0(13.22) Standard stroke mm 400 3.(7.937) 4.4(9.70).(14.551) 500 4.1(9.039) 4.9(.03) 7.3(1.094) 00 5.4(11.905).0(17.37) kg (lb) 00 00 9.4(20.723).2(13.9) 7.3(1.094).3(1.29) 9.4(20.723).4(22.92) 12.5(27.55) 14.(32.17) 9.(21.14).7(23.59) 11.9(2.235) 13.0(2.) 14.2(31.30) 1.5(3.37) 1.(41.447) Theoretical Output Table Note) Bore Size (mm) Piston area (mm 2 ) 0.2 (29) 7 (3.37) 23(5.17) 17 35(7.) 52(11.9) 20 314 2(13.93) 94(21.13) 490 9(22.03) 147(33.04) 32 04 11(3.19) 241(54.17) Theoretical = Pressure (MPa) x Piston area (mm²). output (N) Magnetic Holding Force Operating Pressure [MPa (PSI) ] 0.3 (43.5) 0.4 (5) 0.5 (72.5) 31(.9) 39(.7) 70(.73) (19.7) 1(2.) 7(35.29) 19(44.0) 245(55.07) 322(72.3) 402(90.37) N (lb f) 0. (7) 0.7 (1.5) 4(.34) 54(12.14) 5(23.0) 123(27.5) 1(42.2) 219(49.23) 294(.09) 343(77.) 43(.5) 53(12.5) Bore size (mm) Holding force N (lb f) 20 32 53.9 (12.1) 137 (30.7) 231 (51.9) 33 5 (1.) (132.1) 4
Selection Method 1 Series REH Pv: Maximum operating pressure for vertical operation (MPa) v: llowable load weight for vertical operation (kg) α: oad factor oad weight () Static moment (M) Dynamic moment (Me) Σα = + + Max. load weight (max) llowable static moment (Mmax) llowable dynamic moment (Memax) Operating conditions : oad weight (kg) P: Operating pressure (MPa) U: Maximum Speed (mm/s) Stroke (mm) Position of work piece center of gravity (m) Mode of operation (horizontal, inclined, vertical) Mode of operation Horizontal operation Inclined operation Note 1) Vertical operation Review of load weight and operating pressure First tentative bore size determination ød 1. x P First tentative bore size determination 0.1 x cosθ + sinθ ød 5.0 x P First tentative bore size determination 0.1 x + ød 5.0 x P θ θ Inclined operation Determination of allowable load weight & pressure V P PV >V P>PV (Refer to page 50 for vertical operation.) (Refer to page 4.) Review of operating conditions Σα>1 Determination of load factor oad weight () Static moment (M) Dynamic moment (Me) Σα = + + (Σα) Max. load weight (max) llowable static moment (Mmax) llowable dynamic moment (Memax) Σα 1 (Refer to Data B on page 4.) Note: 1N = 0.224lb f 1kg = 2.204lb 1MPa = 145psi 1in =.4mm 1in = 2.54cm Second tentative determination of bore size from graph of maximum speed (u) and load weight (w). Bore size determination (The larger bore size is selected from two tentative determinations) Note 1) Review of order made products based on operating conditions Note 1) Depending on the operating environment, etc., order made products should also be reviewed. (Refer to page 5 to 9.) determination 47
Series REH Selection Method 2 Precautions on Design (1) The maximum load weight and allowable moment will differ depending on the work piece mounting method, cylinder mounting orientation and piston speed. determination of suitability for use should be performed so that the total (Σ αn ) of the load factors ( αn ) for each weight and moment does not exceed 1. Σαn = oad weight () Max. load weight (max) + Static moment (M) llowable static moment (Mmax) + Dynamic moment (Me) llowable dynamic momen (Memax) 1 oad weight Max. load weight kg (B) max REH 4.0(.1) REH 9.0(19.4) REH20 1.0(35.29) REHT.0(55.11) REHT32 40.0(.1) Moment llowable moment (Static moment/dynamic moment) M1 M2 M3 REH 1.5(13.27) 2.5(13.27) 1.5(13.27) REH (.50) 1(141.1) (.50) REH20 13(1.0) 1(141.1) 13(1.0) REH32 M3 (N m) (lbf in) M1 M2 M3 2(247.2) 2(230.12) 2(247.2) 5(495.4) 5(752.31) 5(495.4) 4(5.44) 9(49.7) 4(5.44) M1 M2 Static moment Moment generated by the self weight of the load even when the cylinder is stopped Pitch moment M1 = M1 Dynamic moment e = 5 x -3 U e: oad equivalent to impact [N] : oad weight [kg] U : Maximum speed [mm/s] 0 0 Roll moment M2 = M2 Pitch moment Me1=1/3 e verage load coefficient Yaw moment M3 = () Moment generated by the load equivalent to the impact at the stroke end e <Data B : Maximum speed oad weight chart> V Me1 e M3 Yaw moment Me3=1/3 e() Me3 V Guide central axis Guide central axis REH REH REH20 REHT REHT32 mm(in) (0.591) 17.5(0.9) 19.5(0.7) 23.5(0.9) 0 0 Since there are 2 guides, the guides central axis and the cylinder s central axis are the same. REH REH REH20 REHT REHT32 mm(in) (0.591) 17.5(0.9) 19.5(0.7) 23.5(0.9) 0 0 Since there are 2 guides, the guides central axis and the cylinder s central axis are the same. oad weight (kg) 50 40 30 20 REH32 REH20 REH REH Note: 1N = 0.224lb f 1kg = 2.204lb 1in =.4mm 1in = 2.54cm 0.5 0 200 300 Maximum speed U (mm/s) 4
Selection Method 3 Series REH Selection Calculation The selection calculation finds the load factors (αn) of the items below, where the total (Σαn) does not exceed 1. Σ αn = α1+ α2 + α3 1 Item 1. Max. load weight oad factor αn α1 = /max Note Review max is the maximum load weight 2. Static moment α2 = M/Mmax Review M1, M2, M3 Mmax is the allowable moment 3. Dynamic moment α3 = Me/Memax Review Me1, Me3 Memax is the allowable moment U: Maximum speed Va Calculation examples Operating conditions Cylinder: REH Cushion: Standard (adjustment bolt) Mounting: Horizontal wall mounting Maximum speed: U = 300 [mm/s ] oad weight: = 1 [kg] (excluding weight of arm section) 1 = 200 [mm] 2 = 200 [mm] 1 2 Item oad factor αn Note 1. Maximum load weight 2 α1 = /max = 1/9 = 0.111 Review. 1 2. Static moment 1 M M2 = 1 = 0.2 = 2 [N m] α2 = M2/M2 max = 2/1 = 0.1 = 1 [kg] = [N] Review M2. Since M1 & M3 are not generated, review is unnecessary. 3. Dynamic moment e e Me3 Me1 2 1 Guide central axis Σ αn = α1 + α2 + α3 + α4 = 0.111 + 0.1 + 0.091 + 0. = 0.427 Can be used based on Σ αn = 0.427 1 e = 5 x -3 U = 5 x -3 300 = [N ] Me3 = 1/3 e(2-) = 1/3 0.12 = 0.91 [N m] α3 = Me3/Me3max = 0.91/ = 0.091 Me1 = 1 /3 e 1 = 1/3 0.2 = 0.1 [N m] α4 = Me1/Me1 max = 1/ = 0.1 Note: 1kg = 2.204lb 1in = 2.54cm Review Me3. Review Me1. 49
Series REH Selection Method 4 Table Deflection Precautions on Design (2) Displacement of table due to pitch moment load Displacement of Section when force acts on Section F M1 = F x F Displacement of table due to roll moment load Displacement of Section when force acts on Section F M2 = F x Opposite port side REH REH REH F Guide central axis (single axis type) For the dual axis type, this is the cylinder s central axis. Displacement of table due to yaw moment load Displacement of Section when force acts on Section F M3 = F x Guide central axis (single axis type) F For the dual axis type, this is the cylinder s central axis. Port side 0.01 0.0 0.0 0.04 0.03 0.01 REH, 20, REH, 20, REH, 20, 0 0.5 1.0 1.5 0 0.5 1.0 1.5 2.0 2.5 0 0.5 1.0 1.5 REH,20 0.01 REH,20 0.0 0.0 0.04 REH,20 0.03 0.01 REHT, 32 REHT, 32 REHT, 32 0 5 20 0 5 20 0 5 20 REHT REHT32 0.01 0.05 0.04 0.03 0.01 REHT REHT32 REHT REHT32 0.03 0.01 0 20 40 0 0 20 40 0 0 0 20 40 0 Vertical Operation Intermediate Stops hen using in vertical operation, prevention of work piece dropping due to breaking of the magnetic coupling should be considered. The allowable load weight and maximum operating pressure should be as shown in the table below. REH REH REH20 REHT REHT32 llowable load weight v (kg) (B) 2.7 (5.95) 7.0 (.4) 11.0 (24.2) 1.5 (40.7) 1.5 (40.7) 30.0 (.1) Max. operating pressure Pv (MPa)(PSI) 0.55 (79.7) 0.5 (94.2) 0.5 (94.2) 0.5 (94.2) 0.5 (94.2) 0.5 (94.2) The cushion effect (smooth start-up, soft stop) exists only before the stroke end in the stroke ranges indicated in the table below. The cushion effect (smooth start-up, soft stop) cannot be obtained in an intermediate stop or return from an intermediate stop using an external stopper, etc. Cushion stroke REH REH REH20 REHT REHT32 Stroke (mm) (in) 20 (0.77) (0.94) 30 (1.11) 30 (1.11) 30 (1.11) 30 (1.11) Note: 1MPa = 145psi 1kg = 2.204lb 1in =.4mm 1N m =.5lb f in 50
High Precision Guide Type Series REH Stroke djustment The adjustment bolt is adjusted to the optimum position for smooth acceleration and deceleration at the time of shipment, and should be operated at the full stroke. hen stroke adjustment is necessary, the maximum amount of adjustment on one side is 2mm. (Do not adjust more than 2mm, as it will not be possible to obtain smooth acceleration and deceleration.) Do not adjust based on the stopper s movement, as this can cause cylinder damage. Stroke djustment oosen the round head Phillips screws, and remove the top covers and dust covers (4pcs.). Then loosen the hexagon nut, and after performing the stroke adjustment from the plate side with a hexagon wrench, refasten and secure the hexagon nut. Dust cover mount of stroke adjustment (max. 2mm) Top cover Stopper Round head Phillips screw Hexagon nut djustment bolt Body Plate djustment Bolt Position (at Shipment), Hexagon Nut Fastening Torque REH REH REH20 REHT REHT32 T(mm)(in) 7 (0.27) 7 (0.27) 7 (0.27) 9 (0.354) 9 (0.354) 9 (0.354) Fastening torque N m (lb f in) 1.7 (14.7) 3.14 (27.79) fter adjusting the stroke, replace the top covers and dust covers. Tighten the round head Phillips screws for securing the top covers with a torque of 0.5N m{0.0kgf m}. Note: 1in =.4mm 1N m =.5lb f in 51
Series REH Construction Single axis type REH, REH Parts list Parts list No. 1 Description Body Material Note No. 1 Description Plate B Material Note 2 Cylinder tube 19 Stopper nodized 3 External slider tube 20 djustment bolt Chromium molybdenum steel 4 Shaft 21 Hexagon nut 5 Piston side yoke Zinc chromated 22 inear guide External slider side yoke Zinc chromated 23 Top cover 7 Magnet 24 Dust cover Magnet B Magnet (for auto switch) 9 Piston Brass Electroless nickel plated 2 Parallel pin Spacer 27 Square nut for body mounting (accessory) 11 Space ring Chromated (except REH) 2 ear ring 12 Slide table 29 ear ring B 13 Side plate 30 Piston seal 14 Side plate B 31 Scraper Cushion ring 32 O-ring 1 Internal stopper nodized 33 O-ring 17 Plate 34 Cushion seal Note) Seal kits are sets consisting of items 2 through 34 above, and can be ordered using the order number for each bore size. Replacement parts: Seal kits Bore size (mm) Order No. REH-PS REH-PS Contents bove Nos. 2, 29, 30, 31, 32, 33, 34 52
High Precision Guide Type Series REH Construction Single axis type REH20, Parts list Parts list No. 1 2 3 4 5 7 9 11 12 13 14 1 17 1 Description Body Cylinder tube External slider tube Shaft Piston side yoke External slider side yoke Magnet Magnet B Bumper Cushion seal holder Piston Spacer Space ring Slide table Side plate Side plate B Cushion ring Internal stopper Material Urethane rubber Note Zinc chromated Zinc chromated Chromated Chromated Chromated nodized No. 19 20 21 22 23 24 2 27 2 29 30 31 32 33 34 35 3 Description Plate Plate B Stopper djustment bolt Hexagon nut inear guide Top cover Dust cover Magnet (for auto switch) Parallel pin Square nut for body mounting ear ring ear ring B Piston seal Scraper O-ring O-ring Cushion seal Material Chromium molybdenum steel Note nodized (accessory) Note) Seal kits are sets consisting of items 30 through 3 above, and can be ordered using the order number for each bore size. Replacement parts: Seal kits Bore size (mm) 20 Order No. REH20-PS -PS Contents bove Nos. 30, 31, 32, 33, 34, 35, 3 53
Series REH Construction Dual axis type REHT, 32 REHT32 Parts list No. 1 2 3 4 5 7 9 11 12 13 14 1 17 Description Body Cylinder tube External slider tube Shaft Piston side yoke External slider side yoke Magnet Magnet B Bumper Cushion seal holder Piston Spacer Space ring Slide table Side plate Cushion ring Internal stopper Material Replacement parts: Seal kits Bore size (mm) Order No. REHT-PS 32 REHT32-PS Note Zinc chromated Zinc chromated Urethane rubber Chromated Chromated Chromated (except REHT32) (except REHT32) Brass Electroless nickel plated (REHT32) REHT nodized Contents bove Nos. 29, 30, 31, 32, 33, 34, 35 Parts list No. Description Material Note 1 19 20 21 22 23 24 2 27 2 29 30 31 32 33 34 35 Plate Stopper djustment bolt Hexagon nut inear guide Top cover Dust cover Magnet (for auto switch) Parallel pin Square nut for body mounting Hexagon socket taper plug ear ring ear ring B Piston seal Scraper O-ring O-ring Cushion seal Chromium molybdenum steel nodized (accessory) Note) Seal kits are sets consisting of items 29 through 35 above, and can be ordered using the order number for each bore size. 54
High Precision Guide Type Dimensions (mm) Single axis type/ø REH 4-M4 x 0.7 thread depth Series REH 1in =.4mm Guide central axis 1 4 23 39.5 27 54 2-M5 x 0. 95 + Stroke Square nut for body mounting M4 x 0.7 20.5 17 9 7.5 2.5 1 + Stroke 54 12 7 17 17.5 39.5 39 3 4 55
Series REH Dimensions (mm) 1in =.4mm Single axis type/ø, ø20, ø REH, 20, 4-M thread depth MM P Guide central axis ZZ PB XB 2-P S + Stroke E EB PP N Z + Stroke Square nut for body mounting J T N NT HG HT HB H H HC HP REH REH20 97 2.5 1 E 2.5 2.5 29 EB 21 22 24 H 4 54 3 H 33.5 42.5 4 HB 33.5 41.5 4 HC 45 53 1.5 HG 17 1 HP 42 50 5.5 HT 19 23.5 2 J M5 x 0. M5 x 0. M x 1.0 13 44 4.5 5 71.5 75.5 M M5 x 0. M5 x 0. M x 1.0 MM REH REH20 N 1.5 1 20.5 N 1 NT 9 P M5 x 0. Rc(PT) 1/ Rc(PT) 1/ P 50 50 5 PB 2 5 75 PP 21 23 27 S 11 19 209 T 5 70 75.5 92.5 3 XB 9.5 Z 194 205 0 ZZ 17.5 19.5 23.5 5
High Precision Guide Type Series REHT Dimensions (mm) Dual axis type/ø, ø32 REHT, 32 4-M thread depth MM 13 P 1in =.4mm XB PB EB 2-Rc(PT)1/ E S + Stroke HB NT T PP PS Square nut for body mounting J N HG HT H H HC HP N Z + Stroke REHT REHT32 1 132.5 E 2.5 30 EB 79 90 H 3 75 H 4 52.5 HB 4 57.5 HC 1.5 72.5 HG 19.5 HP 5.5 9.5 HT 35 43 J M x 1.0 M x 1. 5 3.5 119 130 M M x 1.0 M x 1. MM 12 N 20.5 23 REHT REHT32 N 1 22.5 NT 9 12 P 5 PB 1 PP 1 14 PS 51 1 S 209 219 T 1 124 13 0 XB 9.5 2 Z 0 25 57
Series REH uto Switches/Proper Mounting Position for Stroke End Detection uto switch operating range Piping port surface Proper auto switch mounting position uto switch model Cylinder model REH REH REH20 REHT REHT32 D-Z7 D-Z0 5.5 72 77.5 2 D-Y7 D-Y7 V 5.5 72 77.5 2 D-Y5 D-Y D-Y7P D-Y7PV 5.5 72 77.5 2 D-Z7 D-Z0 59.5 122 127.5 14 14 13 B B D-Y7 D-Y7 V 59.5 122 127.5 14 14 13 D-Y5 D-Y D-Y7P D-Y7PV 59.5 122 127.5 14 14 13 Cylinder model uto switch model REH REH REH20 REHT REHT32 D-Z7 D-Z0 9 D-Y7 D-Y7 V D-Y5 D-Y D-Y7P D-Y7PV 5 5 5 5 Note) Operating ranges are standards including hysteresis, and are not guaranteed. arge variations may occur depending on the surrounding environment. (variations on the order of 30%) uto Switch Mounting hen mounting auto switches, they should be inserted into the cylinder s switch groove from the direction shown in the drawing on the right. fter setting in the mounting position, use a flat head watchmakers screw driver to tighten the set screw which is included. 5 to uto switch Note) hen tightening the auto switch set screw (included with the auto switch), use a watchmakers screw driver with a handle about 5 to mm in diameter. The tightening torque should be approximately 0.05 to 0.1N m (0.443-0.5 lb f in). Set screw (included with auto switch) atchmakers screw driver uto Switch ead ire Containment Groove On models REH20 and a groove is provided on the side of the body (one side only) to contain auto switch lead wires. This should be used for management of wiring. ead wire containment groove 5
t High Precision Guide Type Series REH Specific Product Precautions Be sure to read before handling. Refer to pages 70 through 72 for safety instructions and actuator precautions. Caution Mounting Caution Operation 1. The interior is protected to a certain extent by the top cover, however, when performing maintenance, etc., take care not to cause scratches or other damage to the cylinder tube, slide table or linear guide by striking them or placing objects on them. The bore and exterior of tubes are manufactured to precise tolerances, so that even a slight deformation can cause malfunction. 2. Since the slide table is supported by precision bearings, strong impacts or large moment, etc. should not be applied when mounting work pieces. 3. Mounting of the cylinder body The body is mounted using the square nuts, which are included, in the two T-slots on the bottom of the body. Refer to the table below for mounting bolt dimensions and fastening torque. 4. Contact SMC before operating in an environment where there will be contact with cutting chips, dust (paper scraps, thread scraps, etc.) or cutting oil (gas oil, water, salt water, etc.). 5. Do not operate with the magnetic coupling out of position. In case the magnetic coupling is out of position, push the external slider back into the correct position by hand at the end of the stroke (or correct the piston slider with air pressure).. Do not disassemble the magnetic components (piston slider, external slider). This can cause a loss of holding power and malfunction. 7. During disassembly, use caution in handling the cushion ring. The cushion ring is a precision part, and any deformation, etc. can cause malfunction or poor performance. REH REH REH20 REHT RETH32 Bolt Screw size M4 x 0.7 M5 x 0. M x 1.0 M x 1. dimensions Dimension t l-7 l- l-9 l-12 Fastening torque N m {kgf m} 1.37 0.14 2.5 0.27 4.4 0.45 13.2 1.35 Square nut l Caution Speed adjustment 1. SMC's "throttle" type speed controllers (Series S) are recommended for speed adjustment. (refer to Table 3) 2. Speed adjustment is possible with meter in/meter out type speed controllers, but it may not be possible to obtain the cushion effect (smooth start-up, soft stop). 3. In case of other than horizontal mounting, it is recommended that the system have a reduced pressure supply circuit installed at its lower side. (This is also effective as a countermeasure against start-up delay on an upward stroke, and for air conservation.) Caution Operation 1. The unit can be used with a direct load within the allowable range, but when connecting to a load which has an external guide mechanism, careful alignment is necessary. Since variation of the shaft center increases as the stoke becomes longer, a connection method should be devised which can assimilate this displacement. 2. Since the guide is adjusted at the time of shipment, unintentional movement of the adjustment setting should be avoided. 3. This unit can be operated without lubrication. If lubrication is performed, use class 1 turbine oil (without additives) ISO VG32. (Machine oil and spindle oil cannot be used.) Table 3: Recommended speed controllers REH REH REH20 REH(T) REHT32 Elbow type S1201F-M5-04-X214 S1201F-M5-04-X214 S2201F-01-0-X214 S2201F-01-0-X214 S2201F-01-0-X214 Type Straight type S1301F-M5-04-X214 S1301F-M5-04-X214 S2301F-01-0-X214 S2301F-01-0-X214 S2301F-01-0-X214 In-line type S01F-04-X214 S01F-04-X214 S2001F-0-X214 S2001F-0-X214 S2001F-0-X214 djustment of Cushion Effect (Smooth Start-up, Soft Stop) Caution This cannot be adjusted. There is no cushion needle adjustment of the kind found on conventional cushion mechanisms. 59