THK Single Axis Actuators（Accuracy：High Grade）

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  Actuator KR33

  THK

  A compact, high stiffness, and highly accurate actuator with an integrated inner block consisting of an LM block and a ball screw nut.
  Also, the housing A/B doubles as a support unit, and the inner block doubles as a table.
  It has become possible to significantly reduce design and assembly labor-hours.
  
  [Features]
  ・ Since it is arranged at a contact angle of 45° so that the load is equal in 4 directions, it can be used in any posture.
  ・ Since the straight guide section has a 4-row circular arc groove, there is no gap and highly stiff guidance can be obtained.
  ・ Changes in frictional resistance due to load fluctuations are minimized and follow high accurate feed.
  ・ The U-shaped cross-sectional outer rail improves stiffness against moments and twists.

  CAD ：

  2D / 3D

  Nominal (Height)	Accuracy	Lead(mm)	Table	Motor Mounting Orientation	Main Body, Peripheral Components	Cover	With or w/o Motors	Table Length L1(mm)	Grease	Ball Screw Shaft Dia.(Ø)	With or w/o Lubricant Unit	Table Width W1(mm)	Amplifier Voltage	With or w/o Retainer
  33	High Grade	6 ～ 10	Long 1 pc. / Long 2 pcs. / Short 1 pcs / Short 2 pcs	-	Main Body	-	Not Provided (Installed by customers)	-	Standard	10	Not Provided	-	Not Provided	Provided

  Days to Ship: 20 Day(s) or more

  20 Day(s) or more

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  Compact Series SKR20

  THK

  A compact, high-rigidity and high-precision actuator with an integrated inner block consisting of an LM block and ball screw nut.
  In addition, as the housing A/B serves as a support unit and the inner block serves as a table, it is possible to dramatically reduce the steps in designing and assembling.
  
  [Features]
  · Arranged to make contact at an angle of 45° such that the load is equal in 4 directions, enabling use in various positions.
  · The linear guide is made of 4 rows of circular arced grooves for a highly rigid guide with no cracks.
  · Changes to friction resistance due to changes in load are suppressed as far as possible, promoting high-accuracy feeding.
  · The U-shaped cross-sectional outer rail improves rigidity against moment and torsion.
  
  [Effects of Using Ball Retainer]
  · The grease retention capacity has been improved, allowing long-term maintenance-free operation. (QZ Lubricator is attached to the ball screw.)
  · Eliminates mutual friction between balls, reduces torque fluctuation and achieves excellent sliding performance.
  · In addition, since the basic dynamic load rating of the LM guide and ball screw is higher than conventional products, it has a long service life.

  CAD ：

  2D

  Nominal (Height)	Accuracy	Lead(mm)	Table	Motor Mounting Orientation	Main Body, Peripheral Components	Cover	With or w/o Motors	Table Length L1(mm)	Grease	Ball Screw Shaft Dia.(Ø)	With or w/o Lubricant Unit	Table Width W1(mm)	Amplifier Voltage	With or w/o Retainer
  20	High Grade	1	Long 1 pc. / Long 2 pcs.	Straight	Main Body	Not Provided / Provided	Not Provided (Installed by customers)	33.2	Standard	6	Not Provided	52	Not Provided	Provided

  Days to Ship: 23 Day(s) or more

  23 Day(s) or more

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  Actuator KR46

  THK

  A compact, high stiffness, and highly accurate actuator with an integrated inner block consisting of an LM block and a ball screw nut.
  Also, the housing A/B doubles as a support unit, and the inner block doubles as a table.
  It has become possible to significantly reduce design and assembly labor-hours.
  
  [Features]
  ・ Since it is arranged at a contact angle of 45° so that the load is equal in 4 directions, it can be used in any posture.
  ・ Since the straight guide section has a 4-row circular arc groove, there is no gap and highly stiff guidance can be obtained.
  ・ Changes in frictional resistance due to load fluctuations are minimized and follow high accurate feed.
  ・ The U-shaped cross-sectional outer rail improves stiffness against moments and twists.

  CAD ：

  2D / 3D

  Nominal (Height)	Accuracy	Lead(mm)	Table	Motor Mounting Orientation	Main Body, Peripheral Components	Cover	With or w/o Motors	Table Length L1(mm)	Grease	Ball Screw Shaft Dia.(Ø)	With or w/o Lubricant Unit	Table Width W1(mm)	Amplifier Voltage	With or w/o Retainer
  46	High Grade	10 ～ 20	Long 1 pc. / Long 2 pcs. / Short 1 pcs / Short 2 pcs	-	Main Body	-	Not Provided (Installed by customers)	-	Standard	15	Not Provided	-	Not Provided	Provided

  Days to Ship: 20 Day(s) or more

  20 Day(s) or more

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  Actuator KR20

  THK

  A compact, high stiffness, and highly accurate actuator with an integrated inner block consisting of an LM block and a ball screw nut.
  Also, the housing A/B doubles as a support unit, and the inner block doubles as a table.
  It has become possible to significantly reduce design and assembly labor-hours.
  
  [Features]
  ・ Since it is arranged at a contact angle of 45° so that the load is equal in 4 directions, it can be used in any posture.
  ・ Since the straight guide section has a 4-row circular arc groove, there is no gap and highly stiff guidance can be obtained.
  ・ Changes in frictional resistance due to load fluctuations are minimized and follow high accurate feed.
  ・ The U-shaped cross-sectional outer rail improves stiffness against moments and twists.

  CAD ：

  2D / 3D

  Nominal (Height)	Accuracy	Lead(mm)	Table	Motor Mounting Orientation	Main Body, Peripheral Components	Cover	With or w/o Motors	Table Length L1(mm)	Grease	Ball Screw Shaft Dia.(Ø)	With or w/o Lubricant Unit	Table Width W1(mm)	Amplifier Voltage	With or w/o Retainer
  20	High Grade	1 ～ 6	Long 1 pc. / Long 2 pcs.	-	Main Body	-	Not Provided (Installed by customers)	-	Standard	6	Not Provided	-	Not Provided	Provided

  Days to Ship: 23 Day(s) or more

  23 Day(s) or more

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  Actuator KR26

  THK

  A compact, high stiffness, and highly accurate actuator with an integrated inner block consisting of an LM block and a ball screw nut.
  Also, the housing A/B doubles as a support unit, and the inner block doubles as a table.
  It has become possible to significantly reduce design and assembly labor-hours.
  
  [Features]
  ・ Since it is arranged at a contact angle of 45° so that the load is equal in 4 directions, it can be used in any posture.
  ・ Since the straight guide section has a 4-row circular arc groove, there is no gap and highly stiff guidance can be obtained.
  ・ Changes in frictional resistance due to load fluctuations are minimized and follow high accurate feed.
  ・ The U-shaped cross-sectional outer rail improves stiffness against moments and twists.

  CAD ：

  2D / 3D

  Nominal (Height)	Accuracy	Lead(mm)	Table	Motor Mounting Orientation	Main Body, Peripheral Components	Cover	With or w/o Motors	Table Length L1(mm)	Grease	Ball Screw Shaft Dia.(Ø)	With or w/o Lubricant Unit	Table Width W1(mm)	Amplifier Voltage	With or w/o Retainer
  26	High Grade	2 ～ 6	Long 1 pc. / Long 2 pcs.	-	Main Body	-	Not Provided (Installed by customers)	-	Standard	8	Not Provided	-	Not Provided	Provided

  Days to Ship: 23 Day(s) or more

  23 Day(s) or more

Brand
Product Series
CAD
From
Days to Ship
Nominal (Height)
Accuracy
Lead(mm)
Table
Motor Mounting Orientation
Main Body, Peripheral Components
Cover
With or w/o Motors
Table Length L1(mm)
Grease
Ball Screw Shaft Dia.(Ø)
With or w/o Lubricant Unit
Table Width W1(mm)
Amplifier Voltage
With or w/o Retainer

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Brand	THK	THK	THK	THK	THK
Product Series	Actuator KR33	Compact Series SKR20	Actuator KR46	Actuator KR20	Actuator KR26
CAD	2D / 3D	2D	2D / 3D	2D / 3D	2D / 3D
From	-	-	-	-	-
Days to Ship	20 Day(s) or more	23 Day(s) or more	20 Day(s) or more	23 Day(s) or more	23 Day(s) or more
Nominal (Height)	33	20	46	20	26
Accuracy	High Grade	High Grade	High Grade	High Grade	High Grade
Lead(mm)	6 ～ 10	1	10 ～ 20	1 ～ 6	2 ～ 6
Table	Long 1 pc. / Long 2 pcs. / Short 1 pcs / Short 2 pcs	Long 1 pc. / Long 2 pcs.	Long 1 pc. / Long 2 pcs. / Short 1 pcs / Short 2 pcs	Long 1 pc. / Long 2 pcs.	Long 1 pc. / Long 2 pcs.
Motor Mounting Orientation	-	Straight	-	-	-
Main Body, Peripheral Components	Main Body	Main Body	Main Body	Main Body	Main Body
Cover	-	Not Provided / Provided	-	-	-
With or w/o Motors	Not Provided (Installed by customers)	Not Provided (Installed by customers)	Not Provided (Installed by customers)	Not Provided (Installed by customers)	Not Provided (Installed by customers)
Table Length L1(mm)	-	33.2	-	-	-
Grease	Standard	Standard	Standard	Standard	Standard
Ball Screw Shaft Dia.(Ø)	10	6	15	6	8
With or w/o Lubricant Unit	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided
Table Width W1(mm)	-	52	-	-	-
Amplifier Voltage	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided
With or w/o Retainer	Provided	Provided	Provided	Provided	Provided

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