NEW Compact series KRF. For details, visit THK at Product information is updated regularly on the THK website. CATALOG No.

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1 NEW ompact series KRF For details, visit THK at Product information is updated regularly on the THK website., TLOG No.375-5E

2 ELETRI TUTORS ompact series ompact Series KRF High rigidity fully enclosed actuator Intermediate flange ES Table cover Table Strip seal Inner block QZ Lubricator Outer rail Side cover KRF Full-cover structure KR/SKR Equivalent load for four directions, with high rigidity Outer rail of KR/SKR with proven history adopted Single axis actuator with high moment rigidity Supported size (guideline) KR/SKR KRF Features 1 Fully enclosed design Strip seals on the side cover and upper surface using magnetic attraction method provide a fully enclosed structure. It prevents any damage by entering of foreign materials from outside. s well, the top surface of the strip seal is less likely to generate dust by avoiding the contact. (Excluding KRF3) 2 High rigidity The KRF series employs an outer rail with a U-shaped cross section, enabling it to accommodate a sizable moment load. The actuator body's high rigidity allows for a compact, space-saving design. Displacement angle[ ] Magnet THK products comparison Strip seal Magnetic attraction method The magnet built in the side cover attracts the strip seal and prevents it from lifting, reducing the development of clearance. Economy series ES KRF Load moment M Load moment [N m] Layout example of cantilever configuration

3 ompact series ELETRI TUTORS Model configuration KRF (type without motor) In the case of actuator main unit only, or when the motor specified by the customer is installed Model Stroke Design symbol With/without motor Intermediate flange Method for fixing the motor shaft Option KRF4R WN - D - MR-S (1) (2) (3) (4) (5) () (7) (8) KRF3 : mm 5: 5mm : Without motor No symbol: Select for direct coupling No symbol: None KRF4 : mm : mm 1: With motor* N D: D-cut MR: Motor right return* KRF5 15: 15mm (Prepared by THK) Q K: Key ML: Motor left return* KRF 2: 2mm M M: Friction tightening MD: Motor down return* KRF4R 25: 25mm P GR: Gray cover KRF5R KRF3, KRF4, 3: 3mm When selecting, S Selectable motor shaft fixing methods S: Slider base KRFR and KRF4R 35: 35mm for motor direct R differ depending on models. 1 2: Sensor have ball 4: 4mm coupling specification, U KRF4R: D, K screw of a coupling is not KRF5R: D, K mm only. 45: 45mm provided. For return T KRFR: D, K, M 5: 5mm specifications, a timing WM 55: 55mm pulley and timing belt WN R represents are provided. Specify the option symbol by writing in motor return. : mm When selecting 1, WP the order of description from left adding 5: 5mm the motor you specify WQ -. 7: 7mm will be installed. * This is valid only when selecting 75: 75mm * Specify the motor KRF R for model (1). 8: 8mm cable orientation separately. hange the cover color to gray You can change the color of housing cover to gray. Maximum stroke differs depending Standard: red When GR is selected: gray on models. KRF3: 3mm KRF4: 3mm KRF5: 55mm KRF: 8mm Sample model configuration Main unit only (without motor type) Main unit only (when the motor specified by the customer is installed) KRF M-GR-L1 KRF Q-L Pages for detailed description () Intermediate flange P.1 (7) Option S: With slider base P : Sensor P.14 GR: hange the cover color to gray P.15 2

4 ELETRI TUTORS ompact series Series Specifications [KRF3, 4, 5] [KRF] Model Stroke Motor capacity [W] Stepper motor Servo motor [W] Maximum load capacity 1 Horizontal Wall mount Vertical KRF3 5 to KRF4 5 to KRF5 KRF to to The maximum load capacity indicates the capacity at the rated speed under.5 G for horizontal and wall mount and.3 G for vertical. 2 The maximum speed indicates the speed at the revolution of the motor (3, min -1 ) or the speed restricted by the permissible revolution of the ball screw. 3

5 ompact series ELETRI TUTORS Maximum speed for each stroke 2 [mm/s] Stroke

6 ELETRI TUTORS ompact series KRF3 without motor Model onfiguration Model Stroke Design symbol With/without motor Intermediate flange Option KRF N - GR-S KRF3 : mm 5: 5mm : Without motor : No symbol: Red cover to 1: With motor Without intermediate flange GR: Gray cover 3: 3mm (Prepared by THK) N S: Slider base M S 1 2: Sensor Note: If the GR is not included in the model configuration, cover will be red. asic Specifications LM guide portion portion earing portion xial direction (Fixed side) asic dynamic load rating [N] 193 asic Static Load Rating [N] 345 asic dynamic load rating a [N] 22 asic Static Load Rating a [N] 4 Screw shaft diameter f5 asic dynamic load rating a [N] 59 Static Permissible Load P a [N] Permissible rotational speed [min -1 ] 3 Starting torque 1 [N m]. Positioning repeatability 2 ±.2 Lost motion 2.1 Permissible input torque [N m].154 Static permissible moment 3 [N m] M:12.1 M:12.1 M: The starting torque represents values when the standard grease is filled. 2 These represent values when measured using a motor provided by THK. 3 Moment standards for M and M are the top face of the table, and that for M is the center of the table. Static permissible moment M M M Reference Permissible Overhang Length* Horizontal use Wall use Vertical use Horizontal mount Wall mount Vertical mount Load mass Load mass Load mass This value is the overhang length whose running life is, km for horizontal and wall mount, and 5, km for vertical direction. permissible value of the applied load in each direction. 5

7 ompact series ELETRI TUTORS KRF3 Dimensions (8) (35) (Table cover width) 2-φ3 through (Intermediate flange mounting hole) 24.4 (3.8) (9.5) 1 (79) (L) 3 Stroke (5) (5) 1 (5) L2 NL 2 = L3 2n - M3 depth (Mounting hole) 1 This is a stroke between mechanical ±.2 21 (pplicable to M3) (pplicable to φ2) stoppers. 2 See P.24 for intermediate flange dimensions. R1.5 R depth 5 φ3h7 L1 Elongated hole depth 5 φ2h ± φ3h φ17 4-M3 depth (Mounting hole) 2-φ2H7 +. depth 5 (Dowel pin hole).5.5 Detailed drawing of motor mounting part (when O is selected) 2 Detailed Diagram: Table Detailed Diagram: Elongated Hole Stroke (Stroke between mechanical stoppers) 5 () (1) 15 () Maximum speed 1, 2 [mm/s] : mm 3 Dimensions 2 (2) 25 (2) 3 (3) L L L L Mounting pitch count N Mounting hole count n The maximum speed varies depending on the motor used. Weight The maximum speed is the value restricted by the permissible rotational speed of the ball screw.

8 ELETRI TUTORS ompact series KRF4 without motor Model onfiguration Model Stroke Design symbol With/without motor Intermediate flange Option KRF N - GR-S KRF4 : mm 5: 5mm : Without motor : No symbol: Red cover to 1: With motor Without intermediate flange GR: Gray cover 3: 3mm (Prepared by THK) N S: Slider base Q M P S R 1 2: Sensor Note: If the GR is not included in the model configuration, cover will be red. asic Specifications LM guide portion portion earing portion xial direction (Fixed side) asic dynamic load rating [N] 359 asic Static Load Rating [N] 3 asic dynamic load rating a [N] 8 asic Static Load Rating a [N] 145 Screw shaft diameter f asic dynamic load rating a [N] 115 Static Permissible Load Pa [N] Permissible rotational speed [min -1 ] 3 Starting torque 1 [N m].8 Positioning repeatability 2 ±.2 Lost motion 2.1 Permissible input torque [N m].355 Static permissible moment 3 [N m] M: 31 M: 21.2 M: The starting torque represents values when the standard grease is filled. 2 These represent values when measured using a motor provided by THK. 3 Moment standards for M and M are the top face of the table, and that for M is the center of the table. Static permissible moment M M M Reference Permissible Overhang Length* Horizontal use Wall use Vertical use Horizontal mount Wall mount Vertical mount Load mass 3 25 Load mass Load mass This value is the overhang length whose running life is, km for horizontal and wall mount, and 5, km for vertical direction. permissible value of the applied load in each direction. 7

9 ompact series ELETRI TUTORS KRF4 Dimensions (88) (44) (Table cover width) (L) 4-φ3.5 through (Intermediate flange mounting hole) 9.5 (83.4) (5) Stroke (5.4) (5) L2 NL2 = L 3 2n - M3 depth (Mounting hole) (4.8) φ3h7 +. depth 5 L1 Elongated hole depth 5 1 This is a stroke between mechanical φ23h ±.2 28 (pplicable to M3) 29 ±.2 (pplicable to φ2) stoppers. 2 See P.25 for intermediate flange dimensions. R1.5 R φ4h Detailed drawing of motor mounting part (when O is selected) 2 4-M3 depth 2-φ2H7 +. depth 5 (Mounting hole) (Dowel pin hole) Detailed Diagram: Table.5.5 Detailed Diagram: Elongated Hole Stroke (Stroke between mechanical stoppers) 5 () (1) 15 () Maximum speed 1, 2 [mm/s] : mm 3 Dimensions 2 (2) 25 (2) 3 (3) L L L L Mounting pitch count N Mounting hole count n The maximum speed varies depending on the motor used. Weight The maximum speed is the value restricted by the permissible rotational speed of the ball screw. 8

10 ELETRI TUTORS ompact series KRF4R without motor Model onfiguration Model Stroke Design symbol With/without motor Intermediate flange Method for fixing the motor shaft Option KRF4R WN - D - MR-GR KRF4R : mm 5: 5mm : Without motor WM D: D-cut MR: Motor right return to 1: With motor WN K: Key ML: Motor left return 3: 3mm (Prepared by THK) WP MD: Motor down return WQ GR: Gray cover S: Slider base 1 2: Sensor asic Specifications LM guide portion portion earing portion xial direction (Fixed side) asic dynamic load rating [N] 359 asic Static Load Rating [N] 3 asic dynamic load rating a [N] 8 asic Static Load Rating a [N] 145 Screw shaft diameter asic dynamic load rating a [N] Static Permissible Load Pa [N] f Permissible rotational speed [min -1 ] 3 Starting torque 1 [N m].8 Positioning repeatability 2 ±.2 Lost motion 2.1 Permissible input torque [N m].355 Static permissible moment 3 [N m] M: 31 M: 21.2 M: The starting torque represents values when the standard grease is filled. 2 These represent values when measured using a motor provided by THK. 3 Moment standards for M and M are the top face of the table, and that for M is the center of the table. Static permissible moment M M M Reference Permissible Overhang Length* Horizontal use Wall use Vertical use Horizontal mount Wall mount Vertical mount Load mass Load mass Load mass This value is the overhang length whose running life is, km for horizontal and wall mount, and 5, km for vertical direction. permissible value of the applied load in each direction. 9

11 ompact series ELETRI TUTORS KRF4R Dimensions (22) () (Distance between shafts) (18.8) t 2 Pulley hole diameter Motor mounting plate "WN" φ5h Motor mounting plate "WQ, WP" φ8h Motor mounting plate "WM" φh (44) (Table cover width) (.) (28.9) (88) (L) (4.4) 33.2 Stroke (5.4) (5) 1 (5) 1 (44.8) (.) 14.5 L 2 NxL 2= L3 2xn - M3 depth (Mounting hole) (7.5) (.9) 24.5 φ3h7 +. depth 5 L1 Elongated hole depth 5 1 Stroke up to mecha stopper. 2 See motor mounting plate dimensions ( P.2). 7 (2) () (Distance between shafts) ±.2 28 (pplicable to M3) 29 ±.2 (pplicable to φ2) R1.5 R (.9) (44.8) 4-M3 depth 2-φ2H7 +. depth 5 (Mounting hole) (Dowel pin hole).5.5 ottom side return Detailed Diagram: Table Detailed Diagram: Elongated Hole Stroke (Stroke between mecha stoppers) Maximum speed 1, 2 [mm/s] 5 () (1) : mm 3 L Dimensions L L L Mounting pitch count N Mounting hole count n Weight The maximum speed varies depending on the motor you use. 2 The maximum speed is the value restricted by the permissible rotational speed of the ball screw. 15 () 2 (2) 25 (2) 3 (3)

12 ELETRI TUTORS ompact series KRF5 without motor Model onfiguration Model Stroke Design symbol With/without motor Intermediate flange Option KRF N - GR-S KRF5 : mm 5: 5mm : Without motor : No symbol: Red cover : mm to 1: With motor Without intermediate flange GR: Gray cover 55: 55mm (Prepared by THK) N S: Slider base Q M P S R 1 2: Sensor Note: If the GR is not included in the model configuration, cover will be red. asic Specifications LM guide portion portion earing portion xial direction (Fixed side) asic dynamic load rating [N] 724 asic Static Load Rating [N] 1215 asic dynamic load rating a [N] asic Static Load Rating a [N] Screw shaft diameter f8 asic dynamic load rating a [N] 25 Static Permissible Load Pa [N] 183 Permissible rotational speed 1 [min -1 ] 3 Starting torque 2 [N m].1.12 Positioning repeatability 3 ±.2 Lost motion 3.1 Permissible input torque [N m].71 Static permissible moment 4 [N m] M: 84 M: 48.4 M: Dependent on the stroke. 2 The starting torque represents values when the standard grease is filled. 3 These represent values when measured using a motor provided by THK. 4 Moment standards for M and M are the top face of the table, and that for M is the center of the table. Static permissible moment M M M Reference Permissible Overhang Length* Horizontal use Wall use Vertical use Horizontal mount Wall mount Vertical mount Load mass Load mass Load mass This value is the overhang length whose running life is, km for horizontal and wall mount, and 5, km for vertical direction. permissible value of the applied load in each direction. 11

13 ompact series ELETRI TUTORS KRF5 Dimensions (1) (49) (Table cover width) (L) 4-φ3.5 through (Intermediate flange mounting hole) 11 (2.3) (5) Stroke (.8) (5) 1 (57.4).5 G 2n - M4 depth 8 (Mounting hole) L NL 2 = L φ3h7 +. depth 5 L1 Elongated hole depth 5 φ24h φ5h M4 depth 8 (Mounting hole) Detailed drawing of motor mounting part (when O is selected) ±.2 33 (pplicable to M4) 2-φ2H7 +. depth 5 (Dowel pin hole) Detailed Diagram: Table 35 ±.2 (pplicable to φ2) 1 This is a stroke between mechanical stoppers. 2 See P.27 for intermediate flange dimensions. R R Detailed Diagram: Elongated Hole Stroke (Stroke between mechanical stoppers) Maximum speed 1, 2 [mm/s] 5 () (1) 15 () : mm 3 25 : mm 5 43 L L Dimensions L L G Mounting pitch count N Mounting hole count n Weight The maximum speed varies depending on the motor used. 2 The maximum speed is the value restricted by the permissible rotational speed of the ball screw. 2 (2) 25 (2) 3 (3) 35 (3) 4 (4) 45 (4) 5 (5) 55 (5) 12

14 ELETRI TUTORS ompact series KRF5R without motor Model onfiguration Model Stroke Design symbol With/without motor Intermediate flange Method for fixing the motor shaft Option KRF5R WN - D - MR-GR KRF5R : mm 5: 5mm : Without motor WM D: D-cut MR: Motor right return : mm to 1: With motor WN K: Key ML: Motor left return 55: 55mm (Prepared by THK) WP MD: Motor down return WQ GR: Gray cover S: Slider base 1 2: Sensor asic Specifications LM guide portion portion earing portion xial direction (Fixed side) asic dynamic load rating [N] 724 asic Static Load Rating [N] 1215 asic dynamic load rating a [N] asic Static Load Rating a [N] Screw shaft diameter asic dynamic load rating a [N] Static Permissible Load Pa [N] f Permissible rotational speed 1 [min -1 ] 3 Starting torque 2 [N m].1.12 Positioning repeatability 3 ±.2 Lost motion 3.1 Permissible input torque [N m].71 Static permissible moment 4 [N m] M: 84 M: 48.4 M: Dependent on the stroke. 2 The starting torque represents values when the standard grease is filled. 3 These represent values when measured using a motor provided by THK. 4 Moment standards for M and M are the top face of the table, and that for M is the center of the table. Static permissible moment M M M Reference Permissible Overhang Length* Horizontal use Wall use Vertical use Horizontal mount Wall mount Vertical mount Load mass Load mass Load mass This value is the overhang length whose running life is, km for horizontal and wall mount, and 5, km for vertical direction. permissible value of the applied load in each direction. 13

15 ompact series ELETRI TUTORS KRF5R Dimensions (7) (Distance between shafts) (18.8) t 2 Pulley hole diameter Motor mounting plate "WN" φ5h Motor mounting plate "WQ, WP" φ8h Motor mounting plate "WM" φh (49) (Table cover width) (28.9) 14.5 G NxL 2= L3 2xn - M4 depth 8 (Mounting hole) L (27.5) (1) (L) (8.1) (5.3) 45.4 Stroke (.8) (5) 1 (5) 1 (49.8) 2 (1.1) (5.9) 55 (119.5) (.9) φ3h7 +. depth 5 L1 Elongated hole depth 5 1 Stroke up to mecha stopper. 2 See motor mounting plate dimensions ( P.28). 119 () (7) (Distance between shafts) ±.2 33 (pplicable to M4) 35 ±.2 (pplicable to φ2) R R (.9) (49.8) ottom side return 4-M4 depth 8 2-φ2H7 +. depth 5 (Mounting hole) (Dowel pin hole) Detailed Diagram: Table Detailed Diagram: Elongated Hole Stroke (Stroke between mecha stoppers) 5 () (1) 15 () 2 (2) : Maximum 3 25 speed 1, 2 mm : [mm/s] 5 43 mm L L Dimensions L L G Mounting pitch count N Mounting hole count n Weight The maximum speed varies depending on the motor you use. 2 The maximum speed is the value restricted by the permissible rotational speed of the ball screw. 25 (2) 3 (3) 35 (3) 4 (4) 45 (4) 5 (5) 55 (5) 14

16 ELETRI TUTORS ompact series KRF without motor Model onfiguration Model asic Specifications LM guide portion portion earing portion (Fixed side) asic dynamic load rating [N] 1 asic Static Load Rating [N] 22 asic dynamic load rating a [N] asic Static Load Rating a [N] Screw shaft diameter f xial direction asic dynamic load rating a [N] 293 Static Permissible Load Pa [N] 215 Permissible rotational speed 1 [min -1 ] 3 Starting torque 2 [N m].14.2 Positioning repeatability 3 ±.2 Lost motion 3.1 Permissible input torque [N m] 1.35 Static permissible moment 4 [N m] M: 1 M: 3.8 M: Reference Permissible Overhang Length* Horizontal use Wall use Vertical use Stroke Design symbol With/without motor 1 Dependent on the stroke. 2 The starting torque represents values when the standard grease is filled. 3 These represent values when measured using a motor provided by THK. 4 Moment standards for M and M are the top face of the table, and that for M is the center of the table. M M Intermediate flange Static permissible moment M Option KRF Q - GR-S KRF : mm 5: 5mm : Without motor : No symbol: Red cover : mm to 1: With motor Without intermediate flange GR: Gray cover 8: 8mm (Prepared by THK) Q S: Slider base P R U T 1 2: Sensor Note: If the GR is not included in the model configuration, cover will be red. Horizontal mount Wall mount Vertical mount Load mass Load mass Load mass This value is the overhang length whose running life is, km for horizontal and wall mount, and 5, km for vertical direction. permissible value of the applied load in each direction. Dimensions Stroke (Stroke between mechanical stoppers) 5 (7) (12) 15 (17) 2 (22) Maximum speed 1,2 : mm 3 [mm/s] : mm 5 L L L Dimensions L L G H Mounting pitch count N Mounting hole count n Weight The maximum speed varies depending on the motor used. 2 The maximum speed is the value restricted by the permissible rotational speed of the ball screw. 25 (27) 3 (32) 35 (37) 4 (42) 15

17 ompact series ELETRI TUTORS KRF Dimensions (129) (5) (Table cover width) 2-φ4 through (Intermediate flange mounting hole) 2-M3 depth (Intermediate flange mounting hole) (L) (43) 4 Stroke (5.5) () 1 () G N L2 = L 3 L4 (G) L2 2 n - M through 3 18 H φ3h7 +. depth 5 L1 Elongated hole depth 5 1 This is a stroke between mechanical stoppers. 2 See P.29 for intermediate flange dimensions. 4 φ3h φ28 φh (pplicable to M5) 5 42 ± ±.2 (pplicable to φ3) 4 (pplicable to M2.) R1.5 R M5 depth (Mounting hole) 4-M2. depth 5 (Sensor dog mounting hole) 2-φ3H7 +. depth 5 (Dowel pin hole) Detailed drawing of motor mounting part (when O is selected) 2 Detailed Diagram: Table Detailed Diagram: Elongated Hole Stroke (Stroke between mechanical stoppers) 45 (47) 5 (52) 55 (57) (2) 5 (7) 7 (72) 75 (77) 8 (82) Maximum speed 1, 2 : mm [mm/s] : mm L L L Dimensions L L G H Mounting pitch count N Mounting hole count n Weight The maximum speed varies depending on the motor used. 2 The maximum speed is the value restricted by the permissible rotational speed of the ball screw. 1

18 ELETRI TUTORS ompact series KRFR without motor Model onfiguration Model Stroke Design symbol With/without motor Intermediate flange Method for fixing the motor shaft Option KRFR WQ - D - MR-GR KRFR : mm 5: 5mm : Without motor N: None No symbol: Select for direct coupling MR: Motor right return : mm to 1: With motor WP D: D-cut ML: Motor left return 8: 8mm (Prepared by THK) WQ K: Key MD: Motor down return asic Specifications LM guide portion portion earing portion (Fixed side) asic dynamic load rating [N] 1 asic Static Load Rating [N] 22 asic dynamic load rating a [N] asic Static Load Rating a [N] Screw shaft diameter f xial direction asic dynamic load rating a [N] 293 Static Permissible Load Pa [N] 215 Permissible rotational speed 1 [min -1 ] 3 Starting torque 2 [N m].14.2 Positioning repeatability 3 ±.2 Lost motion 3.1 Permissible input torque [N m] 1.35 Static permissible moment 4 [N m] M: 1 M: 3.8 M: Reference Permissible Overhang Length* Horizontal use Wall use Vertical use M: Friction tightening GR: Gray cover 1 Dependent on the stroke. S: Slider base 1 2: Sensor 2 The starting torque represents values when the standard grease is filled. 3 These represent values when measured using a motor provided by THK. 4 Moment standards for M and M are the top face of the table, and that for M is the center of the table. Static permissible moment M M M Horizontal mount Wall mount Vertical mount Load mass Load mass Load mass This value is the overhang length whose running life is, km for horizontal and wall mount, and 5, km for vertical direction. permissible value of the applied load in each direction. Dimensions Stroke (Stroke between mecha stoppers) 5 (7) (12) Maximum speed *1, *2 : mm 3 [mm/s] : mm 5 L L L Dimensions L L4 G H Mounting pitch count N Mounting hole count n Weight The maximum speed varies depending on the motor used. 15 (17) 2 (22) 2 The maximum speed is the value restricted by the permissible rotational speed of the ball screw. 25 (27) 3 (32) 35 (37) 4 (42) 17

19 ompact series ELETRI TUTORS KRFR Dimensions (75) (18) (Distance between shafts) 7 φ8 (5) (Table cover width) (32) (129) (L) (33) 2 4 Stroke (5.5) (.5) (47.8) (11.55) () () (45.5) (1.2) (142) (7.5) 19 G L2 NxL2 = L3 L4 (G) 2xn - M depth.5 (Mounting hole) 3 φ3h7 +. depth 5 H L1 Elongated hole depth 5 Stroke up to mecha stopper. (1.2) (1.2) 142 (8.85) 45 (75) (Distance between shafts) (pplicable to M5) ±.2 18 ±.2 39 (pplicable to φ3) 4 (pplicable to M2.) 4-M5 depth 4-M2. depth 5 2-φ3H7 +. depth 5 (Mounting hole) (Sensor dog mounting hole) (Dowel pin hole) R1.5.5 R ottom side return Detailed Diagram: Table Detailed Diagram: Elongated Hole Stroke (Stroke between mecha stoppers) Maximum speed 1, 2 [mm/s] 45 (47) 5 (52) 55 (57) (2) 5 (7) 7 (72) 75 (77) 8 (82) : mm : mm L L L Dimensions L L4 G H Mounting pitch count N Mounting hole count n Weight The maximum speed varies depending on the motor you use. 2 The maximum speed is the value restricted by the permissible rotational speed of the ball screw. 18

20 ELETRI TUTORS ompact series Options S: Slider base THK provides slider bases for installing the KRF main unit from the top face. * The product is shipped with this optional assembled. R1.5 R D 2 x m - φ n through φ P counter bore depth Q E L2 F x L 2= L3 L G φ3h7 +. depth 5 (Dowel pin hole) L1 Elongated hole depth 5 (Dowel pin hole).5.5 Detailed Diagram: Elongated Hole Unit: mm Model D KRF KRF4 / KRF4R KRF5 / KRF5R KRF / KRFR 9 78 Note) When the slider base is mounted on KRF, the height of KRF will be mm higher than the standard product due to the thickness of slider base. Stroke L L L L E 14.5 KRF3 F G 24.5 m n 4.5 P 8 Q 4.4 L L L L KRF4 E 14.5 F KRF4R G 24.5 m n 4.5 P 8 Q 4.4 KRF5 KRF5R KRF KRFR L L L L E F G 39.5 m n 4.5 P 8 Q 4.4 L L L L E F G m n 5.5 P 9.5 Q

21 ompact series ELETRI TUTORS 1 2: Sensors Optional proximity sensors and photo sensors are available for KRF. Models equipped with a sensor are also provided with a dedicated sensor rail. Please use the sensor with the following precautions (Notes 1 to ) in mind. Note 1) The customer should provide a sensor target since it cannot be installed onto the actuator main unit. (Excluding KRF) Note 2) Sensor target for KRF to be shipped loose. Note 3) Sensor rails are pre-mounted, and sensors are provided with the product. Note 4) When optional sensor is used, note the home position may differ from the position indicated by the dimension in this catalog, in considering using them. Note 5) Proximity sensors placed too close to each other may not work properly. In such a case, the customer should provide a different frequency type of sensor. (For specifications, contact each manufacturer.) Note ) Mount the sensor/sensor rail on both sides if the stroke is not more than mm. Description Model ccessory With sensor rail - - L/R 1 Photo sensor * [3 units] EE-SX74 (OMRON orporation) Mounting screw, nuts, sensor rail (x 1 or 2), mounting plates (x 3), connectors (EE-1, x 3) L/R Sensor N.O. contact [x 1] GX-F12 (Panasonic Industrial Devices SUNX o., Ltd.) N.. contact [x 2] GX-F12 (Panasonic Industrial Devices SUNX o., Ltd.) Mounting screw, nuts, sensor rail (x 1 or 2) L/R J Sensor N.O. contact [x 1] (PNP output) N.. contact [x 2] (PNP output) GX-F12-P (Panasonic Industrial Devices SUNX o., Ltd.) GX-F12-P (Panasonic Industrial Devices SUNX o., Ltd.) N.O. contact: Normally open contact point N.. contact: Normally closed contact point Sensors marked with a symbol "M", if combined with our controller, cannot be used as a home position sensor. * The photo sensors can be switched between ON when lit and ON when unlit. The range of interference with the motor Symbol Mounting screw, nuts, sensor rail (x 1 or 2) L/R M 1 2 For return specifications, sensors cannot be mounted on the motor side within the range of interference with the motor. L-side L-side R-side R-side Optional: Sensor symbol Symbol 1 2 R * Symbol 1 represents the mounting position for sensor rail and sensor. No symbol is given for the case of stroke mm or shorter. Symbol 2 represents the types of sensors. Symbol 1: Sensor rail H () L Unit: mm Model H () L KRF KRF4 / KRF4R KRF5 / KRF5R KRF / KRFR Stroke +8 2

22 ELETRI TUTORS ompact series Symbols J, M: Proximity sensor GX-F12* (Panasonic Industrial Devices SUNX o., Ltd.) KRF3/4/4R/5/5R KRF/R (49) (g) (h) (i) (k) (j) Symbol : Photo sensor EE-SX74 (OMRON orporation) (55.5) (d) (49.5) (a) (b) (c) (39.) (33.) (27.5) (49) Sensor dog width: 2mm Unit: mm Model g h i j k KRF (55.5) KRF4 / KRF4R KRF5 / KRF5R (39.) (33.) (27.5) (49.5) KRF3/4/4R/5/5R (38.9) (35.7) KRF/R (29.3) (2.7) (38.9) (35.7) (29.3) (2.7) (f) (e) Unit: mm Model a b c d e f KRF KRF4 / KRF4R KRF5 / KRF5R Sensor dog width: 2mm GR: hange the cover color to gray s an option for KRF, the cover color can be changed from red to gray. Housing- cover No symbol: red When GR is selected: gray If the GR is not included in the model configuration, cover will be red. 21

23 ompact series ELETRI TUTORS Intermediate flange Several types of intermediate flanges for mounting motors are available. If choosing "" or "1" as with/without motor for model of type without motor, specify an intermediate flange that matches the motor used. Table: Table of Motors Used and orresponding Intermediate Flanges servo motor Yaskawa Electric orporation Mitsubishi Electric orporation Tamagawa Seiki o., Ltd. Motor type Σ-Vmini Σ-V J2-Jr J3 J4 TL-iⅡ Rated output W Flange angle KRF3 KRF4 KRF5 KRF SGMMV-1 N N N - SGMMV-2 2W 25 N N N - SGMMV-3 3W - N N - SGMJV-5 - Q Q Q 5W SGMV-5 - Q Q Q 4 SGMJV Q W SGMV Q H-Q13 W M M M - H-Q23 2W 28 M M M - H-Q33 3W - M M - HG-K13 W N N N - HG-K23 2W 25 N N N - HG-K33 3W - N N - HF-MP53 - Q Q Q 5W HF-KP53 - Q Q Q 4 HF-MP Q W HF-KP Q HG-MR53 - Q Q Q 5W HG-KR53 - Q Q Q 4 HG-MR Q W HG-KR Q TS42 5W - Q Q Q TS43 W Q MSMD5 5W - P P P MSMD1 W P MINS 5 38 Panasonic MSME5 5W - P P P orporation MSME1 W P MINS 4 MSMD5 5W - P P P 38 MSMD1 W P R243 3W - Q Q Q Sanyo Denki SNMOTION R245 5W 4 - Q Q Q o., Ltd. R R24 W Q OMRON OMNU R88M-K53 5W - Q Q Q 4 orporation G5 R88M-K3 W Q Fanuc βis.2/5 5W - Q Q Q β is series 4 orporation βis.3/5 W Q SV-M5 5W - Q Q Q SV 4 Keyence SV-M W Q orporation MV-M5 5W - Q Q Q MV 4 MV-M W Q R2* 28 S α step R4, RL4, Z R R - R*, RL*, Z* U VK52* 28 S S S - 5-phase VK VK54* 42 - R R R Oriental Stepper VK5* U Motor o. motor MK22* 28 S S S - Ltd. MK MK24* 42 - R R - 2-phase MK2* T VK22* 28 S S S - VK VK24* 42 - R R - VK2* T Note 1) The symbols in the table indicate the housing and intermediate flange. Note 2) For motor coupling, contact THK. Note 3) If the motor's maximum torque mounted exceeds the permissible input torque (refer to P.5, 7, 11 15), take safety measures, such as torque restrictions. 22

24 ELETRI TUTORS ompact series Motor mounting plate for return Return symbol configuration Several types of motor mounting plates are available. Specify the return symbol corresponding to the motor used. WQ M (1) (2) (1) Motor mounting plate type Refer to the table below Return symbols corresponding to motors used. (2) Method for fixing the motor shaft K: Key D: D-cut M: Friction tightening Key D-cut Friction tightening tool Figure: Method for fixing the motor shaft Table: Return symbols corresponding to motors used servo motor Motor type Rated output Flange angle KRF4R KRF5R KRFR SGMMV-2 2W WN-D WN-D S-V mini 25 SGMMV-3 3W WN-D WN-D Yaskawa Electric SGMJV-5 WQ-K WQ-K WQ-K,WQ-M 5W orporation SGMV-5 WQ-K WQ-K WQ-K,WQ-M S-V 4 SGMJV-1 WQ-K,WQ-M W SGMV-1 WQ-K,WQ-M H-Q23 2W WM-D WM-D J2-Jr 28 H-Q33 3W WM-D WM-D HF-MP53 WQ-D WQ-D WQ-D,WQ-M 5W HF-KP53 WQ-D WQ-D WQ-D,WQ-M J3 4 Mitsubishi Electric HF-MP13 WQ-D,WQ-M W orporation HF-KP13 WQ-D,WQ-M HG-MR53 WQ-D WQ-D WQ-D,WQ-M 5W HG-KR53 WQ-D WQ-D WQ-D,WQ-M J4 4 H-MR13 WQ-D,WQ-M W H-KR13 WQ-D,WQ-M Tamagawa Seiki TS42 5W WQ-D WQ-D WQ-D,WQ-M TL-i II 4 o., Ltd. TS43 W WQ-D,WQ-M MSMD5 5W WP-K WP-K WP-K,WP-M MINS 4 38 MSMD1 W WP-K,WP-M Panasonic MSMD5 5W WP-K WP-K WP-K,WP-M 38 orporation MSMD1 W WP-K,WP-M MINS 5 MSME5 5W WP-K WP-K WP-K,WP-M 38 MSME1 W WP-K,WP-M Sanyo Denki o., R45 5W WQ-M SNMOTION R 4 Ltd. R4 W WQ-M OMRON orporation OMNU G5 R88M-K53 5W 4 WQ-K WQ-K SV-M5 5W WQ-K WQ-K WQ-K,WQ-M SV 4 Keyence SV-M W WQ-K,WQ-M orporation MV-M5 5W WQ-D WQ-D WQ-D,WQ-M MV 4 MV-M W WQ-D,WQ-M 23

25 ompact series ELETRI TUTORS For KRF3 KRF ctuator model : Housing : Intermediate flange Intermediate flange KRF3 M φ2h7 φ17 2-M2.5 through 4-M2. depth 5 (PD33, 9 equipartition) KRF3 N M2.5 through φ2h7 φ drill through (PD28, 9 equipartition) KRF3 S φ22h M2.5 through 4-3 drill through Note) For dimension of, see P.. 24

26 ELETRI TUTORS ompact series For KRF4 KRF ctuator model : Housing : Intermediate flange Intermediate flange KRF4 P KRF4 Q H7 21 3H M3 through (PD45, 9 equipartition) 4-M3 through 4-M4 through (PD4, 9 equipartition) 4-M3 through KRF4 R KRF4 S H H drill through.5 counter bore depth 3.5 (From the back surface) 4-M3 through 4-3 drill through ounter bore depth 3.5 (From the back surface) 4-M3 through KRF4 M KRF4 N H7 2 2H7 4-M3 through.5 4-M3 through 4-M2. through (PD33, 9 equipartition) drill through ounter bore depth 3.5 (PD28, 9 equipartition from the back surface) Note) For dimension of, see P.8. 25

27 ompact series ELETRI TUTORS For KRF4R Return specification (motor mounting plate) KRF4R WP KRF4R WQ φ2 φ3 4 2 φ2 φ3 4 - M3 through (PD45, 9 equipartition) M3 through 4 - M4 through (PD4, 9 equipartition) M3 through KRF4R WM KRF4R WN M3 through φ M2. through (PD33, 9 equipartition) 4 - M3 through φ3.4 through (PD28, 9 equipartition) φ2.5 2

28 ELETRI TUTORS ompact series For KRF5 KRF ctuator model : Housing : Intermediate flange Intermediate flange KRF5 P KRF5 Q H H M3 through (PD45, 9 equipartition) 4-M3 through 4-M4 through (PD4, 9 equipartition) 4-M3 through KRF5 R KRF5 S H H drill through.5 counter bore depth 3.5 (From the back surface) 4-M3 through drill through ounter bore depth 4 (From the back surface) 4-M3 through KRF5 M KRF5 N H M3 through 2H7 4-M2. through (PD33, 9 equipartition) 4-M3 through drill through, ounter bore depth 3.5 (PD28, 9 equipartition from the back surface) Note) For dimension of, see P.. 27

29 ompact series ELETRI TUTORS For KRF5R Return specification (motor mounting plate) KRF5R WP KRF5R WQ φ3 φ2 4 φ3 φ2 4 - M3 through (PD45, 9 equipartition) M3 through 4 - M4 through (PD4, 9 equipartition) M3 through KRF5R WM KRF5R WN φ M2. through 34 (PD33, 9 equipartition) 4 - M3 through 4 - φ3.4 through (PD28, 9 equipartition) 4 - M3 through φ

30 ELETRI TUTORS ompact series For KRF KRF ctuator model : Housing : Intermediate flange Intermediate flange KRF P KRF Q M3 through (PD45, 9 equipartition) M3 through H H H drill through 4-M4 through (PD4, 9 equipartition) drill through KRF R KRF T drill through.5 counter bore depth 4 (From the back surface) 4-M4 through drill through KRF U H M4 through drill through Note) For dimension of, see P

31 ompact series ELETRI TUTORS For KRFR Return specification (motor mounting plate) KRFR WP φ3 4 - M3 through (PD45, 9 equipartition) M3 through M3 depth KRFR WQ φ3 4 - M4 through (PD4, 9 equipartition) M3 through M3 depth

32 ELETRI TUTORS ompact series MEMO 31

33 ompact series ELETRI TUTORS MEMO 32

34 ELETRI TUTORS ompact series MEMO 33

35 Precautions on Use zzoperation Do not unnecessarily disassemble the actuator or control device. Doing so may allow foreign objects to enter or reduce functionality. Do not drop or knock the actuator or control device. Doing so may cause injury or damage the unit. If the product is dropped or impacted, functionality may be reduced even if there is no surface damage. zzenvironment Wrong environment can cause failures of the actuator and control devices. The best place to use the product is as follows: ctuator: place with an ambient temperature from to 4 and humidity of 8% RH or lower that will not expose the product to freezing or condensation. place free from corrosive gas and flammable gas. place free from electrically conductive powder (such as iron powder), dust, oil mist, cutting fluid, moisture, salt, and organic solvent. place free from direct sunlight and radiant heat. place free from strong electric and magnetic fields. place where vibration or impact is not transmitted to the unit. place that is easily accessible for service and cleaning purposes. zzsafety Precautions When the actuator is in motion or about to be in motion, do not touch any moving parts. Do not go near the actuator when it is in motion. efore performing installation, adjustment, checking, or services regarding and the connected peripherals, ensure that all power is disconnected. In addition, take countermeasures to prevent anyone other than the operator from turning on the power. If two or more people are involved in the operation, confirm the procedures such as sequences, signs, and abnormalities in advance, and appoint another person for monitoring the operation. efore operation, please read thoroughly and obey "Manipulating industrial robots - Safety" (JIS 8433) and "Ordinance on Industrial Safety and Health" (Ministry of Health, Labor and Welfare). Operation of the actuator over the torque limit value s to damage of parts or injury. Please keep the torque limit settings of parameters within THK specifications. lthough a stopper is installed inside the product, it is intended to limit the stroke and therefore may be damaged in case of a hard collision. zzlubrication Thoroughly remove anti-rust oil and feed lubricant before using the product. In order to effectively use the actuator, lubrication is required. Insufficient lubrication may increase abrasion on the rolling part and shorten service life. Do not use a mix of lubricants with different physical properties. Please contact THK if using special lubricants. When adopting oil lubrication, contact THK for details. The greasing interval may vary depending on the usage conditions, so THK recommends determining a greasing interval during the initial inspection. zzstorage When storing the actuator, enclose it in a package designated by THK and store it in a horizontal orientation while avoiding high temperature, low temperature and high humidity. 34

36 TUTOR UNITS ompact Series KRF The actual products may differ from the pictures and photographs in this catalog. Outward appearances and specifications are subject to change without notification for the purpose of improvement. lthough great care has been taken in the production of this catalog, THK will not take any responsibility for damage resulting from typographical errors or omissions. In exporting our products and technology, or selling them for the purpose of export, THK has a basic policy of observing laws relating to foreign exchange, trade and other laws. For export of THK products as single items, please contact THK in advance. ll rights reserved. NORTH MERI THK merica,inc. HEDQURTERS Phone: Fax: HIGO OFFIE Phone: Fax: NORTH EST OFFIE Phone: Fax: TLNT OFFIE Phone: Fax: LOS NGELES OFFIE Phone: Fax: SN FRNISO OFFIE Phone: Fax: DETROIT OFFIE Phone: Fax: TORONTO OFFIE Phone: Fax: SOUTH MERI THK RZIL INDUSTRI E OMERIO LTD. Phone: Fax: EUROPE THK GmbH EUROPEN HEDQURTERS Phone: Fax: DÜSSELDORF OFFIE Phone: Fax: STUTTGRT OFFIE Phone: Fax: U.K. OFFIE Phone: Fax: Head Office Nishigotanda, Shinagawa-ku, Tokyo JPN International Sales Department Phone: Fax: Global site : ITLY OFFIE Phone: Fax: SWEDEN OFFIE Phone: Fax: USTRI OFFIE Phone: Fax: SPIN OFFIE Phone: Fax: TURKEY OFFIE Phone: Fax: PRGUE OFFIE Phone: Fax: MOSOW OFFIE Phone: Fax: THK Europe.V. EINDHOVEN OFFIE Phone: Fax: THK France S..S. PRIS OFFIE Phone: Fax: HIN THK (HIN) O.,LTD. HEDQURTERS Phone: Fax: SHNGHI OFFIE Phone: Fax: EIJING OFFIE Phone: Fax: HENGDU OFFIE Phone: Fax: GUNGZHOU OFFIE Phone: Fax: SHENZHEN OFFIE Phone: Fax: XIN OFFIE Phone: Fax: THK (SHNGHI) O.,LTD. Phone: Fax: TIWN THK TIWN O.,LTD. TIPEI HED OFFIE Phone: Fax: TIHUNG OFFIE Phone: Fax: TINN OFFIE Phone: Fax: KORE SEOUL REPRESENTTIVE OFFIE Phone: Fax: SINGPORE THK LM System Pte. Ltd. Phone: Fax: THILND THK RHYTHM(THILND) O., LTD. LM System Division angkok ranch Phone: Fax: INDI THK India Pvt. Ltd. HEDQURTERS & angalore ranch Phone: Fax: Pune ranch Phone: THK O., LTD E24 Printed in Japan