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Linear Bushing LM Type

Linear Bushing LM Type

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  • Linear Bushing LM Type
  • Linear Bushing LM Type
Check FAQ of this product (7 items)

THK

THK

This linear bushing has an outer diameter formed by a highest-precision cylinder, and is used in a wide range of applications.
Part of the milli series, the most widely used series in Japan.

(i)Caution

  • Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
    There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.

PDF

Japanese Only

Part Number

Configured Part Number is shown.

 
30
45
60
  1. 1
Part Number
LM6-AJ
LM6UU-AJ
LM8-AJ
LM8S-AJ
LM8SUU-AJ
LM8UU-AJ
LM10-AJ
LM10UU-AJ
LM12-AJ
LM12UU-AJ
LM13UU-AJ
LM16-AJ
LM16UU-AJ
LM20-AJ
LM20UU-AJ
LM25-AJ
LM25UU-AJ
LM30UU-AJ
LM35UU-AJ
LM40-AJ
LM50UU-AJ
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSType Inscribed Circle Dia. dr
(Ø) 		Overall Length L
(mm) 		Style Outer Dia. D
(Ø) 		Accuracy Types Eccentricity
(µm) 		Basic Load Rating: Dynamic Load (Details)
(N) 		Basic Load Rating: Static Load
(N) 		Inscribed Circle Dia. Tolerance (Negative Side)
(mm) 		Basic Rated Load, Dynamic Rating
(N) 		Dust-proof Seal

MYR 29.89

1 Piece(s) 4 Day(s) or more 10Straight Open Type / Clearance Adjustment Type619[Open Type, Clearance Adjusting Type] Clearance adjusting shape12High GradeClearance adjusting shape12206265-0.009206No

MYR 67.36

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type619[Open Type, Clearance Adjusting Type] Clearance adjusting shape12High GradeClearance adjusting shape12206265-0.009206Both ends with adhesive

MYR 27.72

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type824[Open Type, Clearance Adjusting Type] Clearance adjusting shape15High GradeClearance adjusting shape12265402-0.009265No

MYR 25.59

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type817[Open Type, Clearance Adjusting Type] Clearance adjusting shape15High GradeClearance adjusting shape12176225-0.009176No

MYR 55.58

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type817[Open Type, Clearance Adjusting Type] Clearance adjusting shape15High GradeClearance adjusting shape12176225-0.009176Both ends with adhesive

MYR 63.73

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type824[Open Type, Clearance Adjusting Type] Clearance adjusting shape15High GradeClearance adjusting shape12265402-0.009265Both ends with adhesive

MYR 25.59

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type1029[Open Type, Clearance Adjusting Type] Clearance adjusting shape19High GradeClearance adjusting shape12373549-0.009373No

MYR 60.96

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type1029[Open Type, Clearance Adjusting Type] Clearance adjusting shape19High GradeClearance adjusting shape12373549-0.009373Both ends with adhesive

MYR 25.59

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type1230[Open Type, Clearance Adjusting Type] Clearance adjusting shape21High GradeClearance adjusting shape12412598-0.009412No

MYR 61.18

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type1230[Open Type, Clearance Adjusting Type] Clearance adjusting shape21High GradeClearance adjusting shape12412598-0.009412Both ends with adhesive

MYR 61.18

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type1332[Open Type, Clearance Adjusting Type] Clearance adjusting shape23High GradeClearance adjusting shape12510775-0.009510Both ends with adhesive

MYR 68.65

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type1637[Open Type, Clearance Adjusting Type] Clearance adjusting shape28High GradeClearance adjusting shape127751180-0.009775No

MYR 85.27

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type1637[Open Type, Clearance Adjusting Type] Clearance adjusting shape28High GradeClearance adjusting shape127751180-0.009775Both ends with adhesive

MYR 88.62

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type2042[Open Type, Clearance Adjusting Type] Clearance adjusting shape32High GradeClearance adjusting shape158631370-0.01863No

MYR 110.56

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type2042[Open Type, Clearance Adjusting Type] Clearance adjusting shape32High GradeClearance adjusting shape158631370-0.01863Both ends with adhesive

MYR 139.76

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type2559[Open Type, Clearance Adjusting Type] Clearance adjusting shape40High GradeClearance adjusting shape159801570-0.01980No

MYR 160.21

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type2559[Open Type, Clearance Adjusting Type] Clearance adjusting shape40High GradeClearance adjusting shape159801570-0.01980Both ends with adhesive

MYR 257.49

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type3064[Open Type, Clearance Adjusting Type] Clearance adjusting shape45High GradeClearance adjusting shape1515702750-0.011570Both ends with adhesive

MYR 298.46

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type3570[Open Type, Clearance Adjusting Type] Clearance adjusting shape52High GradeClearance adjusting shape2016703140-0.0121670Both ends with adhesive

MYR 297.81

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type4080[Open Type, Clearance Adjusting Type] Clearance adjusting shape60High GradeClearance adjusting shape2021604020-0.0122160No

MYR 291.02

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type50100[Open Type, Clearance Adjusting Type] Clearance adjusting shape80High GradeClearance adjusting shape2038207940-0.0123820Both ends with adhesive

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  1. 1

Basic Information

Outer Sleeve Material Steel Outer Sleeve Surface Treatment No Lubrication Type No
Ball Recirculating Type Single Motion Linear Motion Length Standard
Linear Motion / Rotational Motion Linear Bushing (Linear Motion Only) The material of a ball Iron W/ or w/o metal retainer No
Operating Temperature Max(℃) 80

Configure

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21 Part Numbers

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Configure Remaining Specifications
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Specification/Dimensions

  • Type

    • Straight
    • Straight Open Type / Clearance Adjustment Type

    Clear

  • Inscribed Circle Dia. dr(Ø)

    • 3
    • 4
    • 5
    • 6
    • 8
    • 10
    • 12
    • 13
    • 16
    • 20
    • 25
    • 30
    • 35
    • 40
    • 50
    • 60

    Clear

  • Overall Length L(mm)

    • 10
    • 12
    • 15
    • 17
    • 19
    • 24
    • 29
    • 30
    • 32
    • 37
    • 42
    • 59
    • 64
    • 70
    • 80
    • 100
    • 110

    Clear

  • Style

    • Standard Shape
    • Open Type, Clearance Adjusting Type
      • Clearance adjusting shape
      • Open Type

    Clear

  • Outer Dia. D(Ø)

    • 7
    • 8
    • 10
    • 12
    • 15
    • 19
    • 21
    • 23
    • 28
    • 32
    • 40
    • 45
    • 52
    • 60
    • 80
    • 90

    Clear

  • Accuracy

    • High Grade
    • Precision Grade

    Clear

  • Eccentricity(µm)

    • 4
    • 8
    • 10
    • 12
    • 15
    • 20
    • 25

    Clear

  • Basic Rated Load, Dynamic Rating(N)

    • 88.2
    • 167
    • 176
    • 206
    • 265
    • 373
    • 412
    • 510
    • 775
    • 863
    • 980
    • 1570
    • 1670
    • 2160
    • 3820
    • 4710

    Clear

  • Dust-proof Seal

    • Both ends with adhesive
    • No
    • Single end seal

    Clear

  • type

    • LM

    Clear

  • Types

    • Standard
    • Open Type
    • Clearance adjusting shape

    Clear

  • CAD

    • 2D
    • 3D

    Clear

Days to Ship

    • All
    • 1 Day(s) or Less
    • 2 Day(s) or Less
    • 4 Day(s) or Less
    • 5 Day(s) or Less
    • 22 Day(s) or Less
    • 34 Day(s) or Less
    • 39 Day(s) or Less
    • 45 Day(s) or Less
    • 84 Day(s) or Less

    Clear

Specify Alterations

Frequently asked question (FAQ)

Question: What distinguishes the Linear Bushing LM Type from other linear motion bearings?
Answer: The Linear Bushing LM Type is designed with a high-precision steel outer sleeve and a single ball recirculation path. Unlike plain bushings, it uses rolling contact through hardened steel balls, resulting in low friction and high positioning accuracy. Its design ensures uniform load distribution and smooth linear motion, even under high-speed or repetitive stroke conditions.
Question: What materials and surface treatments are used in the Linear Bushing LM Type?
Answer: The outer sleeve is made from precision-ground steel with no additional surface treatment to maintain dimensional accuracy. The rolling elements (balls) are made of high-carbon bearing steel, providing high hardness and wear resistance. This construction ensures stability and longevity under continuous linear motion applications.
Question: How does the Linear Bushing LM Type accommodate load and movement?
Answer: The Linear Bushing LM Type supports loads through a contact area formed between the balls and the shaft, distributing stress uniformly along the contact lines. It is optimized for radial loads while allowing smooth linear reciprocating motion. However, it is not intended for rotational or moment loads unless specifically supported by a guide structure.
Question: What is the operational temperature range and lubrication requirement for the Linear Bushing LM Type?
Answer: The standard operating temperature is up to 80°C. Although it can be used without lubrication, applying lithium-based grease or oil is recommended for continuous operation to reduce wear and extend service life. The open type variants allow easier maintenance and lubrication access in high-duty applications.
Question: What are the available configurations of the Linear Bushing LM Type?
Answer: This series includes multiple styles such as Standard Type, Open Type, and Clearance Adjusting Type. The open type allows shaft clearance adjustment or preloading for increased rigidity. The clearance adjusting shape ensures optimal shaft fit for precision positioning and minimal vibration during motion.
Question: How is the Linear Bushing LM Type installed and aligned for optimal performance?
Answer: Proper shaft alignment and housing tolerance are critical. The shaft surface hardness should be above HRC 58, and roughness below Ra 0.2 μm. The housing bore tolerance should follow H7 specifications, ensuring correct interference fit without distortion. Misalignment may cause uneven ball contact and reduced lifespan.
Question: What accuracy grades are available, and how do they affect performance?
Answer: The Linear Bushing LM Type is available in High Grade and Precision Grade accuracy levels. Precision grade models feature tighter dimensional tolerances and reduced radial play, providing superior repeatability for applications such as semiconductor assembly, optical inspection, or fine machining systems.

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