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THK US Instruction Manual

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тел. +7(499) 703-39-86
www.thk.ru
sales@thk.ru
THK Electrical Actuator Universal Series
US/USW
INSTRUCTION MANUAL
No.3050-2(0)E

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  • Page 1 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru THK Electrical Actuator Universal Series US/USW INSTRUCTION MANUAL No.3050-2(0)E...

  • Page 2: Table Of Contents

    7-3 Other precautions ________________________________________________ 7-3 7-4 Motor bracket (detail) _____________________________________________ 7-4 7-5 Motor mounting method ___________________________________________ 7-7 7-6 Position where the sensor cable is pulled out _______________________7-36 7-7 Sensor cable length _____________________________________________7-38 7-8 Details of internal sensor _________________________________________7-43 7-9 Base mounting method __________________________________________7-45 US/USW...
  • Page 3 9-3 Recommended coupling __________________________________________ 9-3 9-4 Static permissible moment ________________________________________ 9-4 9-5 Static permissible load ____________________________________________ 9-4 9-6 Permissible input torque ___________________________________________ 9-5 9-7 Introduction of the grease _________________________________________ 9-6 9-8 Introduction of the grease gun unit __________________________________ 9-9 US/USW...

  • Page 4: Introduction

    Drawings throughout this manual are only intended as typical examples, and may differ from your product. z Note that THK shall not be liable for any result incurred by applying this manual, regardless of the reason. z This manual is also applied to custom products. However, the descriptions provided in the delivery specification drawings or delivery specification documents of those custom products take precedence over this manual.

  • Page 5: How To Use This Product

    For the following information, please contact THK. z Technical support for this product About related instruction manuals z When you use the actuator US/USW, read the following instruction manuals as necessary. When using driver controller TLC/THC • Controller series Driver controller TLC •...

  • Page 6: Safety Precautions

    If any moving part falls, it may cause injury or damage. z While this product is operating, do not touch any moving part or rotating part. Doing so may cause your hand to be caught and injured. US/USW...
  • Page 7 (top cover, side cover, end cap, motor, etc.). Note) This hoisting work should be carried out only by a qualified personnel wearing protective equipment (helmets, safety shoes, etc.). Failure to do so may cause the product to fall, leading to injury, or cause fault or fracture. US/USW...
  • Page 8 We recommend to attach a hanging jig when the actuator main unit has the weight of 20 kg or more. For the details, see 9. Appendix Hanging Jig (→ P.9-1). * For more information on the weight of the product, see the general catalog of THK electrical actuators. „ Installation and operation z Firmly secure this product before operating it.

  • Page 9: Checking The Precautions/Instruction Labels

    Figs.1 to 4 show the affixing positions. Caution – High temperature Caution – Getting caught 取扱説明書をお読みください。 取扱説明書をお読みください。 Review the manual. Review the manual. Fig.1 US6T/8T precautions/instruction labels affixing positions 取扱説明書をお読みください。 取扱説明書をお読みください。 Review the manual. Review the manual. Fig.2 US6RT/8RT precautions/instruction labels affixing positions US/USW...
  • Page 10 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 2. Safety 2. Safety Precautions Precautions 取扱説明書をお読みください。 取扱説明書をお読みください。 Review the manual. Review the manual. Fig.3 USW12T/16T/20T precautions/instruction labels affixing positions 取扱説明書をお読みください。 取扱説明書をお読みください。 Review the manual. Review the manual. Fig.4 USW12RT/16RT/20RT cautions/instruction affixing positions US/USW...

  • Page 11: Nameplates Display

    3. Nameplates 3. Nameplates display display Nameplates display and serial number Fig. 5 and 6 show the nameplate format of Universal Series US/USW. TYPE No.: Actuator model number SERIAL No.: Manufacturing number Ｔ Ｙ Ｐ Ｅ　Ｎ ｏ． ： US8T-05-0150A-1-P-C-A-GR Ｓ...

  • Page 12: Specification

    4. Specification The basic specification The basic specification of US/USW is shown as follows. Do not exceed the following basic specification when using the product. Failure to do so may cause fault or damage, or may cause abnormal operation that could lead to injury.
  • Page 13 USW20 200 to 1700 2200 2140 1920 1730 1570 1430 1310 1210 1110 1030 950 890 830 770 720 680 640 600 570 530 *3 The maximum speed is restricted by the permissible rotational speed of the ball screw. US/USW...

  • Page 14: Speed And Load Capacity Characteristic Diagram

    { Lead 6 mm [Vertical] ACC/DCC 0.3G [Horizontal] ACC/DCC 0.3G Max. ACC/DCC 0.5G Max. ACC/DCC 0.5G Speed [mm/s] Speed [mm/s] { Lead 12 mm [Horizontal] ACC/DCC 0.3G [Vertical] ACC/DCC 0.3G Max. ACC/DCC 0.5G Max. ACC/DCC 0.5G Speed [mm/s] Speed [mm/s] US/USW...
  • Page 15 { Lead 6 mm [Vertical] [Horizontal] ACC/DCC 0.3G ACC/DCC 0.3G Max. ACC/DCC 0.5G Max. ACC/DCC 0.5G Speed [mm/s] Speed [mm/s] { Lead 12 mm [Vertical] [Horizontal] ACC/DCC 0.3G ACC/DCC 0.3G Max. ACC/DCC 0.5G Max. ACC/DCC 0.5G Speed [mm/s] Speed [mm/s] US/USW...
  • Page 16 { Lead 5 mm ACC/DCC 0.2G [Vertical] ACC/DCC 0.3G [Horizontal] Max. ACC/DCC 0.3G Max. ACC/DCC 0.5G Speed [mm/s] Speed [mm/s] { Lead 10 mm [Vertical] ACC/DCC 0.3G [Horizontal] ACC/DCC 0.3G Max. ACC/DCC 0.5G Max. ACC/DCC 0.5G Speed [mm/s] Speed [mm/s] US/USW...
  • Page 17 Max. ACC/DCC 0.7G 1000 1200 1400 1000 1200 1400 Speed [mm/s] Speed [mm/s] { Lead 30 mm [Vertical] [Horizontal] ACC/DCC 0.3G ACC/DCC 0.3G Max. ACC/DCC 0.7G Max. ACC/DCC 0.7G 1200 1500 1800 2100 1200 1500 1800 2100 Speed [mm/s] Speed [mm/s] US/USW...
  • Page 18 Max. ACC/DCC 0.7G 1000 1200 1400 1000 1200 1400 Speed [mm/s] Speed [mm/s] { Lead 30 mm [Vertical] [Horizontal] ACC/DCC 0.3G ACC/DCC 0.3G Max. ACC/DCC 0.7G Max. ACC/DCC 0.7G 1200 1500 1800 2100 1200 1500 1800 2100 Speed [mm/s] Speed [mm/s] US/USW...
  • Page 19 { Lead 5 mm [Horizontal] ACC/DCC 0.3G [Vertical] ACC/DCC 0.3G Max. ACC/DCC 0.5G Max. ACC/DCC 0.5G Speed [mm/s] Speed [mm/s] { Lead 10 mm ACC/DCC 0.3G [Horizontal] [Vertical] ACC/DCC 0.3G Max. ACC/DCC 0.5G Max. ACC/DCC 0.6G Speed [mm/s] Speed [mm/s] US/USW...
  • Page 20 Max. ACC/DCC 1.0G 1000 1200 1400 1000 1200 1400 Speed [mm/s] Speed [mm/s] { Lead 30 mm [Vertical] [Horizontal] ACC/DCC 0.3G ACC/DCC 0.3G Max. ACC/DCC 1.0G Max. ACC/DCC 1.0G 1200 1500 1800 2100 1200 1500 1800 2100 Speed [mm/s] Speed [mm/s] US/USW...
  • Page 21 Max. ACC/DCC 1.0G 1000 1200 1000 1200 Speed [mm/s] Speed [mm/s] { Lead 40 mm [Horizontal] [Vertical] ACC/DCC 0.3G ACC/DCC 0.3G Max. ACC/DCC 1.0G Max. ACC/DCC 1.0G 1000 1500 2000 2500 1000 1500 2000 2500 Speed [mm/s] Speed [mm/s] 4-10 US/USW...
  • Page 22 Max. ACC/DCC 1.0G 1000 1200 1000 1200 Speed [mm/s] Speed [mm/s] { Lead 40 mm [Vertical] [Horizontal] ACC/DCC 0.3G ACC/DCC 0.3G Max. ACC/DCC 1.0G Max. ACC/DCC 1.0G 1000 1500 2000 2500 1000 1500 2000 2500 Speed [mm/s] Speed [mm/s] 4-11 US/USW...

  • Page 23: Structure And Model Numbers

    End cap Table Top cover Motor bracket Motor top cover Side cover Motor side cover End cap Fig.7 Structure and part names of US6T/8T End cap Table Top cover Side cover Pulley cover Fig.8 Structure and part names of US6RT/8RT US/USW...
  • Page 24 Top cover Base Pulley cover Fig.10 Structure and part names of USW12RT/16RT/20RT * For details such as the dimensions and accuracy, see the delivery specification drawings or general catalog of THK electrical actuators. If you have any question, contact THK. US/USW...

  • Page 25: Model Configuration

    0B: Without motor (with brake) TH: Driver controller THC 1: With motor (Prepared by THK) 1B: With motor (Prepared by THK, with brake) When “0” or “0B” is selected Direct coupled specification: Coupling is not provided. Motor return specification: Timing pulley and timing belt are provided.
  • Page 26 No symbol: None GR: Change the cover color to gray (10) Options MR: Motor right side return HG: Hanging jig ML: Motor left side return (1) When motor return is selected in the model number, please select either "MR" or "ML". US/USW...
  • Page 27 HA : 10 m high flex Lengths for motor cable, motor electromagnetic brake cable (only when designating motor with electromagnetic cable), encoder cable, home position/limit sensor, and sensor cable. Cables you can select differ depending on controllers. TLC/THC: “F3”, “F5”, “FA”, “H3”, “H5”, “HA” US/USW...

  • Page 28: Storage And Transportation

    We recommend to attach a hanging jig when the actuator main unit has the weight of 20kg or more. For the details, see 9. Appendix Hanging Jig (→ P.9-1). * For more information on the weight of the product, see the general catalog of THK electric actuators. US/USW...

  • Page 29: Precautions To Be Observed For Prevention Of Product Fault Or Fracture

    This product is provided with antirust treatment and sealed before being packed. When storing the product, enclose it in a package designated by THK and store it in a horizontal orientation while avoiding high temperature, low temperature and high humidity.

  • Page 30: Installation And Operation

    Doing so may cause fault or damage. Or may cause abnormal operation that could lead to injury. Also, see the appendix, which contains the permissible rotation speed for each model number. z Do not use the defected or fractured product. Doing so may cause injury or machine failure. US/USW...

  • Page 31: Precautions To Be Observed For Prevention Of Product Fault Or Fracture

    • Place at the following operating temperature range Operating temperature: 0°C to 40°C (ambient humidity 80% RH or less, no freezing or condensation) * If you desire to use the product outside of the operating temperature range, contact THK. • Place with non-corrosive gas nor flammable gas •...

  • Page 32: Other Precautions

    Check necessary data such as permissible torque, eccentricity, deflection angle and tightening torque of the clamp bolt. * The maximum outer diameter of usable couplings [mm] · US6T/8T: ɸ 27 · USW12T: ɸ 43 · USW16T/20T: ɸ 47 US/USW US/USW...

  • Page 33: Motor Bracket (Detail)

    Operation Motor bracket (detail) US/USW have the motor covered. If using a motor not indicated in the catalog, please confirm that the motor does not cause interference. For details of the motor bracket, please confirm with Figs. 11 to 15. Dimensions when brake is installed are shown in parentheses.
  • Page 34 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 7. Installation and 7. Installation and 7. Installation and Operation Operation Operation (130) Ball screw center (16) (94) Fig. 13 USW12T motor bracket (157) Ball screw center (110) 40.5 Fig. 14 USW16T motor bracket US/USW US/USW...
  • Page 35 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 7. Installation and 7. Installation and 7. Installation and Operation Operation Operation 48.5 (176) Ball screw center 17.5 (150) 30.5 Fig. 15 USW20T motor bracket US/USW US/USW...

  • Page 36: Motor Mounting Method

    Operation Motor mounting method For US/USW, motor bracket is provided to allow mounting of various motors. { In the case of direct coupled specification (US6T) 1. Remove the bolt, and remove the end cap toward the direction of arrow (painted in black).
  • Page 37 * Mount the motor while the cable connected to the connector. * For selection, handling and mounting of a coupling, see the respective catalog issued by the coupling manufacturer. * Check necessary data such as permissible torque, eccentricity, deflection angle and tightening torque of the clamp bolt. US/USW US/USW...
  • Page 38 6. Pull out the cable from the opening of end cover, and mount the motor top cover. Opening (for pulling out cable) Motor top cover Model number Bolt size Tightening torque [N·cm] US6T M4 x 6L Bolt type: Thin head screw US/USW US/USW...
  • Page 39 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 7. Installation and 7. Installation and 7. Installation and Operation Operation Operation 7. Mount end cap. Model number Bolt size Tightening torque [N·cm] US6T M3 x 12L Bolt type: Hexagonal-socket-head type bolt 7-10 7-10 US/USW US/USW...
  • Page 40 Motor side cover Motor top cover Model number Bolt size US8T M4 x 6L Bolt type: Thin head screw Motor side cover Model number Bolt size Tightening torque [N·cm] US8T M4 x 6L Bolt type: Thin head screw 7-11 7-11 US/USW US/USW...
  • Page 41 * For selection, handling and mounting of a coupling, see the respective catalog issued by the coupling manufacturer. * Check necessary data such as permissible torque, eccentricity, deflection angle and tightening torque of the clamp bolt. 7-12 7-12 US/USW US/USW...
  • Page 42 Motor top cover Model number Bolt size Tightening torque [N·cm] US8T M4 x 6L Bolt type: Thin head screw Motor side cover Model number Bolt size Tightening torque [N·cm] US8T M4 x 6L Bolt type: Thin head screw 7-13 7-13 US/USW US/USW...
  • Page 43 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 7. Installation and 7. Installation and 7. Installation and Operation Operation Operation 7. Mount end cap. Model number Bolt size Tightening torque [N·cm] US8T M3 x 10L Bolt type: Hexagonal-socket-head type bolt 7-14 7-14 US/USW US/USW...
  • Page 44 2. Remove the motor cover support toward the direction of arrow, and mount the coupling at ball screw end. Motor cover support Mounting the coupling Model number Bolt size USW12T M4 x 8L USW16T M4 x 8L USW20T M4 x 8L Bolt type: Hexagonal-socket-head type bolt 7-15 7-15 US/USW US/USW...
  • Page 45 * Check necessary data such as permissible torque, eccentricity, deflection angle and tightening torque of the clamp bolt. * Tie mount is provided at motor cable wiring part. Use it as necessary. Use the banding band with width of 4.8 mm or shorter. Tie mount 7-16 7-16 US/USW US/USW...
  • Page 46 4. Mount the motor cover support, and pull out each cable from the opening. Opening (for pulling out cable) Model number Bolt size Tightening torque [N·cm] USW12T M4 x 8L USW16T M4 x 8L USW20T M4 x 8L Bolt type: Hexagonal-socket-head type bolt 7-17 7-17 US/USW US/USW...
  • Page 47 Bolt type: Hexagonal-socket-head type bolt Motor top cover Model number Bolt size Tightening torque [N·cm] USW12T Special bolt USW16T Special bolt USW20T Special bolt * When you mount the special bolt, use a hexagonal wrench (opposite side distance 3.0 mm). 7-18 7-18 US/USW US/USW...
  • Page 48 Bolt type: Cross recessed button-head bolt 2. Loosen the mounting bolt of the motor mounting plate, and remove the motor mounting plate. Motor mounting Model number Bolt size US6RT M4 x 12L Bolt type: Hexagonal-socket-head type bolt (with small plain washer) 7-19 7-19 US/USW US/USW...
  • Page 49 US6RT M4 x 4L Bolt type: Hexagon socket set screw * The pulley at motor side is an attached article. * For the type of motor to be used, select orthogonal 2 face D cut type. 7-20 7-20 US/USW US/USW...
  • Page 50 Bolt size US6RT M4 x 12L Bolt type: Hexagonal-socket-head type bolt (with small plain washer) 5. Set the belt to the pulley. * The timing belt is hung at the pulley of the main unit side. 7-21 7-21 US/USW US/USW...
  • Page 51 7. Installation and Operation Operation Operation 6. Use the 2 locations on the tap of the pulley bracket side surface to mount the tension plate. Side surface Tension plate * The tension plate and bolts are an attached article. 7-22 7-22 US/USW US/USW...
  • Page 52 Note: For how to use the belt tensimeter, see the instruction manual of each manufacturer. Belt unit mass Belt width Mounting span Model number Timing belt [g/mm width x m length] [mm] [mm] US6RT 237-3GT 70.7 7-23 7-23 US/USW US/USW...
  • Page 53 Bolt type: Hexagonal-socket-head type bolt (with small plain washer) 9. Remove the tension plate, and mount the pulley cover. Model number Bolt size Tightening torque [N·cm] US6RT M3 x 6L Bolt type: Cross recessed button-head bolt 7-24 7-24 US/USW US/USW...
  • Page 54 Bolt type: Cross recessed button-head bolt 2. Loosen the mounting bolt of the motor mounting plate, and remove the motor mounting plate. Motor mounting Model number Bolt size US8RT M4 x 12L Bolt type: Hexagonal-socket-head type bolt (with small plain washer) 7-25 7-25 US/USW US/USW...
  • Page 55 US8RT M4 x 6L Bolt type: Hexagon socket set screw * The pulley at motor side is an attached article. * For the type of motor to be used, select orthogonal 2 face D cut type. 7-26 7-26 US/USW US/USW...
  • Page 56 * Pay attention to the orientation of the tension adjusting tap. Model number Bolt size US8RT M4 x 12L Bolt type: Hexagonal-socket-head type bolt (with small plain washer) 5. Set the belt to the pulley. * The timing belt is an attached article. 7-27 7-27 US/USW US/USW...
  • Page 57 6. Use the 2 locations on the tap (two from the top) of pulley bracket side surface to mount the tension plate. Side surface Tension plate * The tension plate and bolts are an attached article. 7-28 7-28 US/USW US/USW...
  • Page 58 Belt to be used (Made by Gates Unitta Asia Company) Note: For how to use the belt tensimeter, see the instruction manual of each manufacturer. Belt unit mass Belt width Mounting span Model number Timing belt [g/mm width x m length] [mm] [mm] US8RT 258-3GT 7-29 7-29 US/USW US/USW...
  • Page 59 + Bolt type: Hexagonal-socket-head type bolt (with small plain washer) 9. Remove the tension plate, and mount the pulley cover. Model number Bolt size Tightening torque [N·cm] US8RT M3 x 6L Bolt type: Cross recessed button-head bolt 7-30 7-30 US/USW US/USW...
  • Page 60 USW16RT M3 x 6L USW20RT M4 x 8L Bolt type: Hexagonal-socket-head type bolt 2. Mount the servo motor. Note that when the connector is placed upside down, it can stick out from the base bottom surface. 7-31 7-31 US/USW US/USW...
  • Page 61 Tightening torque [N·cm] USW12RT M4 x 10L USW16RT M4 x 10L USW20RT M4 x 10L Bolt type: Hexagonal-socket-head type bolt Distance between pulley motors Model number A dimension USW12RT 22.5 mm USW16RT 23.5 mm USW20RT 26.5 mm 7-32 7-32 US/USW US/USW...
  • Page 62 M5 x 10L USW20RT M6 x 15L Bolt type: Hexagonal-socket-head type bolt * The timing belt is hung at the pulley of the mecha unit side. * The bolt for adjusting tension is an attached article. 7-33 7-33 US/USW US/USW...
  • Page 63 Note: For how to use the belt tensimeter, see the instruction manual of each manufacturer. Belt unit mass Belt width Mounting span Model number Timing belt [g/mm width x m length] [mm] [mm] USW12RT 450-5GT-15 USW16RT 457-5GT-15 USW20RT 575-5GT-20 7-34 7-34 US/USW US/USW...
  • Page 64 6. Remove the tension adjusting bolt (hexagonal-socket-head type bolt: M3), and mount the pulley cover. Tension adjusting bolt Model number Bolt size Tightening torque [N·cm] USW12RT M3 x 6L USW16RT M3 x 6L USW20RT M4 x 8L Bolt type: Hexagonal-socket-head type button bolt 7-35 7-35 US/USW US/USW...

  • Page 65: Position Where The Sensor Cable Is Pulled Out

    When the sensor code “P” or “Q” is selected, the sensor cable will be pulled out of the opening on the motor side. For the details, see Figs.16 to 23..Opening Fig.16 US8T opening Fig.17 USW12T opening Fig.18 USW16T opening Fig.19 USW20T opening 7-36 7-36 US/USW US/USW...
  • Page 66 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 7. Installation and 7. Installation and 7. Installation and Operation Operation Operation ..Opening Fig.20 US8RT opening (12 ) Fig.21 USW12RT opening Fig.22 USW16RT opening Fig.23 USW20RT opening 7-37 7-37 US/USW US/USW...

  • Page 67: Sensor Cable Length

    7. Installation and 7. Installation and Operation Operation Operation Sensor cable length The cable length of US/USW depends on the sensor type. The cable length is the distance from the opening. { US6T/6RT sensor wiring diagram Sensor "N" Sensor "6"...
  • Page 68 Note) When the sensor code "Q" is selected, the cable is pulled out of the top of the side cover on the reverse motor side. For the details, see Fig. 24. The product with the controller only is shipped with the cable fixed in the side cover. Fig.24 Wiring example of US8 sensor cable 7-39 7-39 US/USW US/USW...
  • Page 69 Connector provided "EE-1001" Sensor cable 1 m Sensor cable 1 m ± OT sensor provided ± OT sensor provided ± OT sensor provided ± OT sensor provided ± OT sensor cable Connector NORG sensor cable Sensor 7-40 7-40 US/USW US/USW...
  • Page 70 7. Installation and Operation Operation Operation { USW sensor wiring diagram Sensor "N" Sensor "Q" Sensor "P" MIN100 MIN100 Loose wires Loose wires MIN500 MIN500 Loose wires Loose wires ± OT sensor cable Connector NORG sensor cable Sensor 7-41 7-41 US/USW US/USW...
  • Page 71 Connector provided "EE-1001" Sensor cable 1 m Sensor cable 1 m ± OT sensor provided ± OT sensor provided ± OT sensor provided ± OT sensor provided ± OT sensor cable Connector NORG sensor cable Sensor 7-42 7-42 US/USW US/USW...

  • Page 72: Details Of Internal Sensor

    When the sensor code “P” or “Q” is selected, the sensors are built in the actuator. (Except for US6) US8: Sensor 1 unit (for near home position) USW: Sensor 3 units (for near home position and for limit) 7-43 7-43 US/USW US/USW...
  • Page 73 EE-1001-1 * For US8T/US8RT, only the sensor near home position is used. Pin assignment of sensor cable Covering color Signal name Brown Black Blue * The mark tube is attached to the end of the cable. 7-44 7-44 US/USW US/USW...

  • Page 74: Base Mounting Method

    Operation Operation Base mounting method For US series, secure the base on the mounting surface using the countersunk holes on the base or taps. Note) For US6T/6RT/8T/8RT, only the countersunk hole can be used. Note) Mount the base so that the bolts for securing base do not interfere with the moving parts.
  • Page 75 Material of Iron tightening mounting Aluminum torque [N∙cm] surface Table 1 US6T/6RT/8T/8RT countersunk specification tightening torque 3. Mount the top cover using the bolts. The bolt used: Thin head screw M4 x 6L Tightening torque: 107 [N·cm] 7-46 7-46 US/USW US/USW...
  • Page 76 2. Secure the USW main unit to the mounting surface using the countersunk holes of the base. Depending on the type of the motor, you cannot access the countersunk holes shown in A part below. Note) Secure the actuator using all the mounting holes. 7-47 7-47 US/USW US/USW...
  • Page 77 1568 1568 tightening mounting Aluminum 1568 1568 1568 1568 torque [N∙cm] surface Table 2 USW countersunk specification tightening torque 3. Mount the top cover using the bolts. Bolt type used: Special bolt Tightening torque: 431 [N·cm] 7-48 7-48 US/USW US/USW...
  • Page 78 Fit length of bolt [mm] Recommended Material of Iron 2039 1870 2039 1870 tightening mounting Aluminum 1568 1568 1568 1568 torque [N∙cm] surface Table 3 Tightening torque for mounting base (when using the bottom surface tap) 7-49 7-49 US/USW US/USW...
  • Page 79 Model number Bolt size Steel Steel Bolt material 10.9 A2-70 10.9 A2-70 Fit length of bolt [mm] Recommended Iron Material of objects tightening torque to be conveyed Aluminum [N∙cm] Table 4 Tightening torque for mounting US table 7-50 7-50 US/USW US/USW...
  • Page 80 A2-70 10.9 A2-70 10.9 A2-70 Fit length of bolt [mm] Recommended Material of Iron 2039 1870 2039 1870 tightening mounting Aluminum 1568 1568 1568 1568 torque [N∙cm] surface Table 5 Tightening torque for mounting USW table 7-51 7-51 US/USW US/USW...
  • Page 81 Model number USW12 USW16 USW20 Main unit hole diameter ɸ 5H7 ɸ 5H7 ɸ 5H7 ɸ 5H7 ɸ 5H7 Main unit hole depth [mm] Positioning pin length [mm] Table 7 Main unit positioning pin hole details 7-52 7-52 US/USW US/USW...
  • Page 82 7-12 T slot The US series have the T-slot as standard. It can be used for mounting sensors or cable chain supporter. For the details of T-slots, see Figs.28 to 32. * US6/8 has the T-slot for mounting the sensor. You cannot use it for mounting mobile objects such as cable chains or heavy objects.
  • Page 83 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 7. Installation and 7. Installation and 7. Installation and Operation Operation Operation Fig.30 USW12 T-slot details (C part) Fig.31 USW16 T-slot details (D part) Fig.32 USW20 T-slot details (E part) 7-54 7-54 US/USW US/USW...

  • Page 84: Maintenance

    Doing so may ignite the grease, which could cause fire. * For other information on handling grease, see the precautions indicated on the grease package or catalog. We have “Material Safety Data Sheets” for THK original greases. Contact THK for details. Precautions to be observed for prevention of product fault or fracture z To have this product fully exerts its functions, it is essential to lubricate the product.

  • Page 85: Daily Inspection

    * If you continue to use the product with the timing belt contacting the flange part, it may cause a fracture of the flange or abnormal wear of the belt. • Visually check an abnormal wear, scratch, or crack on the teeth or side of the timing belt. US/USW...

  • Page 86: Lubrication

    The standard models are supplied with the following greases before shipment: · US: THK AFA Grease · US (from October 1, 2014, on): LM guide portion: THK AFA Grease Ball screw portion: THK AFF Grease · USW: THK AFB-LF Grease ·...

  • Page 87: Method For Supplying Grease

    8. Maintenance 8. Maintenance Method for supplying grease The following figure shows a US representative greasing method for your reference. Procedures (US6T/6RT) 1. Move the table to the reverse motor side. Motor side Reverse motor side 2. Remove the bolt (hexagonal-socket-head type bolt: M3 x 12L), and remove the end cap on reverse motor side.
  • Page 88 1.5 + 0.005 x stroke Ball screw part Lead 12 mm 1.5 + 0.005 x stroke Table 9 Amount of greasing 4. Mount the end cap on reverse motor side. Bolt size Tightening torque [N·cm] M3 x 10L Bolt type: Hexagonal-socket-head type bolt US/USW...
  • Page 89 ④ Repeat this process several times until the amount of grease reaches the specified level. For the amount of grease, see Table 10. Note) Make sure that you supply the grease several times. If you supply the specified amount of grease at once, the grease may not go around all the corners. US/USW...
  • Page 90 2.3 + 0.007 x stroke Lead 30 mm 2.3 + 0.007 x stroke Table 10 Amount of greasing 4. Mount the end cap on reverse motor side. Bolt size Tightening torque [N·cm] M3 x 10L Bolt type: Hexagonal-socket-head type bolt US/USW...
  • Page 91 ④ Repeat this process several times until the amount of grease reaches the specified level. For the amount of grease, see Table 11. Note) Make sure that you supply the grease several times. If you supply the specified amount of grease at once, the grease may not go around all the corners. US/USW...
  • Page 92 20 mm 3.5 + 0.01 x stroke 40 mm 6.4 + 0.01 x stroke 20 mm 4 + 0.01 x stroke USW20 40 mm 6.9 + 0.01 x stroke Table 12 Amount of greasing for USW ball screw part US/USW...
  • Page 93 8. Maintenance 8. Maintenance 4. Mount the end cap on reverse motor side. Model number Bolt size Tightening torque [N·cm] USW12 M3 x 8L USW16 M4 x 10L USW20 M4 x 10L Bolt type: Hexagonal-socket-head type bolt 8-10 US/USW...

  • Page 94: Belt Replacement Method For Motor Return Type

    8. Maintenance Belt replacement method for motor return type The following figure shows the belt replacement method for US/USW your reference. Procedures (US6RT) 1. Remove the bolt, and take out the pulley cover toward the direction of the black arrow.
  • Page 95 3. Use the tension adjusting bolt of the tension plate (hexagonal-socket-head type bolt: M3) to fix the motor mounting plate. Tension adjusting bolt 4. Loosen the mounting bolt of the motor mounting plate. Mounting bolt Model number Bolt used US6RT M4 x 12L Bolt type: Hexagonal-socket-head type bolt 8-12 US/USW...
  • Page 96 Bolt type: Hexagonal-socket-head type bolt Model number Timing belt US6RT 237-3GT-6 6. Replace with the new timing belt, and mount the housing C. Model number Bolt used Tightening torque [N·cm] US6RT M4 x 25 Bolt type: Hexagonal-socket-head type bolt 8-13 US/USW...
  • Page 97 * For the method to adjust the belt, see “Motor mounting method”. 8. Tighten the mounting bolt of the motor mounting plate. Mounting bolt Model number Bolt used Tightening torque [N·cm] US6RT M4 x 12L Bolt type: Hexagonal-socket-head type bolt 8-14 US/USW...
  • Page 98 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 8. Maintenance 8. Maintenance 9. Remove the tension plate, and mount the pulley cover. Model number Bolt size Tightening torque [N·cm] US6RT M3 x 6L Bolt type: Cross recessed button-head bolt 8-15 US/USW...
  • Page 99 2. Mount the tension adjusting bolt (hexagonal-socket-head type bolt: M3).Loosen the mounting bolt of the motor mounting plate. Mounting bolt Tension adjusting bolt Model number Bolt size USW12RT M5 x 10L USW16RT M5 x 10L USW20RT M6 x 15L Bolt type: Hexagonal-socket-head type bolt 8-16 US/USW...
  • Page 100 4. Remove the hexagonal-socket-head type bolt, and take out the pulley support to the direction of the arrow. Model number Bolt used USW12RT M4 x 40L USW16RT M5 x 45L USW20RT M5 x 45L Bolt type: Hexagonal-socket-head type bolt 8-17 US/USW...
  • Page 101 USW16RT 457-5GT-15 USW20RT 575-5GT-20 Bolt type: Hexagonal-socket-head type bolt 6. Mount the pulley support. Model number Bolt used Tightening torque [N·cm] USW12RT M4 x 40L USW16RT M5 x 45L USW20RT M5 x 45L Bolt type: Hexagonal-socket-head type bolt 8-18 US/USW...
  • Page 102 * For the method to adjust the belt, see “Motor mounting method”. 8. Tighten the mounting bolt of the motor mounting plate. Mounting bolt Model number Bolt used Tightening torque [N·cm] USW12RT M5 x 10L USW16RT M5 x 10L USW20RT M6 x 15L 1313 Bolt type: Hexagonal-socket-head type bolt 8-19 US/USW...
  • Page 103 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 8. Maintenance 8. Maintenance 9. Mount the pulley cover. Model number Bolt used Tightening torque [N·cm] USW12RT M3 x 6L USW16RT M3 x 6L USW20RT M4 x 8L Bolt type: Hexagonal-socket-head type button bolt 8-20 US/USW...

  • Page 104: Appendix

    * The hanging jig is applicable to USW. * When THK mounts the hanging jig to the actuator for shipment, please prepare the eyebolts M10 (4 pcs, equivalent to JIS B 1169) by yourself. * When we mount the hanging jig to the actuator for shipment, and when you select “6”, “E”, “J”...

  • Page 105: Standard Coupling

    * When you (the customer) purchase the standard coupling of USW on your own, the color of surface treatment of the coupling will be different from that of the others, but the performance/ quality of the product will be the same. Color of surface treatment (THK standard coupling) Color of surface treatment (Manufacturer standard coupling) US/USW...

  • Page 106: Recommended Coupling

    тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru 9. Appendix 9. Appendix Recommended coupling The recommended couplings of US/USW are shown in the following table: Recommended couplings Model number Models Manufacturers Inertia moment [kg·cm US6T SFC-020DA2_C 0.034 US8T SFC-020DA2_C 0.034 USW12T SFC-030DA2_B Miki Pulley Co., LTD.

  • Page 107: Static Permissible Moment

    [N] (100W) Axial direction 3330 3760 2571 1047 Direct motor coupling 1288 (150W) Motor return 1345 Motor return (150W) Table 18 Static permissible load Note) The static permissible load is the maximum load permissible under the static condition. US/USW...

  • Page 108: Permissible Input Torque

    If you use a motor that exceeds the permissible input torque, consider taking a necessary measure such as limiting the motor torque. Model number Direct motor coupling [N·m] Motor return [N·m] 1.67 1.23 1.67 2.14 USW12 2.65 2.65 USW16 5.98 5.98 USW20 8.18 8.18 Table 19 Permissible input torque US/USW...

  • Page 109: Introduction Of The Grease

    9. Appendix 9. Appendix Introduction of the grease THK original grease AFA Grease It is high-class grease with a long service life using a urea-based consistency enhancer with high- class synthetic oil as the base oil. z Property ·...
  • Page 110 Copper plate corrosion (B method, 100°C, 24 h) Accepted Startup Low temperature torque: mN·m (-20°C) Rotation 4-ball test (fusion load): N 3089 Service temperature range (°C) -15 to 100 Appearance color Brownish yellow Fig.35 Appearances of the grease tube and product box US/USW...
  • Page 111 Copper plate corrosion (B method, 100° C, 24 h) Accepted Startup Low temperature torque: mN･m (-20° C) Rotation 4-ball test (fusion load): N 1236 Operating temperature range (° C) -40 to 120 Appearance color Reddish brown Fig. 36 Appearance of the grease tube and the product box US/USW...

  • Page 112: Introduction Of The Grease Gun Unit

    Introduction of the grease gun unit Grease Gun Unit MG70 The grease gun unit MG70 is capable of supplying grease for US/USW by replacing the dedicated nozzle. The grease gun has a slit window that allows you to visually check the remaining amount of grease.
  • Page 113 9. Appendix Fig.37 Appearance of the grease gun Fig. 38 shows the shapes of the nozzles and attachment for the grease gun used to lubricate US/ USW. * It allows you to supply grease to a part difficult to lubricate (by dropping grease onto the raceway) by using the P type attachment.
  • Page 114 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru Appendix Revision history Th e in s t r u ct i o n ma n ua l N o. i s d es c r ib e d o n t h e b ack cov er.
  • Page 115 тел. +7(499) 703-39-86 www.thk.ru sales@thk.ru THK Electric Actuator Universal Series US / USW INSTRUCTION MANUAL 201802 No.3050-2(0)E...

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