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Linear Bushing LM Type (Part Numbers)

Linear Bushing LM Type

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  • Linear Bushing LM Type
  • Linear Bushing LM Type

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
LM35
LM35P
LM35U
LM35UU
LM35UU-AJ
LM35UU-OP
LM35UUP
LM40
LM40-AJ
LM40P
LM40U
LM40UP
LM40UU
LM40UU-OP
LM40UUP
LM50
LM50UU
LM50UU-AJ
LM60
LM60U
LM60UU
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 80.26

1 Piece(s) 4 Day(s) or more 10Straight3570Standard Shape52High GradeStandard2016703140-0.0121670No

MYR 160.04

1 Piece(s) 5 Day(s) or more -Straight3570Standard Shape52Precision GradeStandard1216703140-0.0081670No

MYR 133.32

1 Piece(s) 5 Day(s) or more 10Straight3570Standard Shape52High GradeStandard2016703140-0.0121670Single end seal

MYR 86.59

1 Piece(s) 4 Day(s) or more 10Straight3570Standard Shape52High GradeStandard2016703140-0.0121670Both 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 311.38

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type3570[Open Type, Clearance Adjusting Type] Open Type52High GradeOpen Type2016703140-0.0121670Both ends with adhesive

MYR 179.37

1 Piece(s) 5 Day(s) or more -Straight3570Standard Shape52Precision GradeStandard1216703140-0.0081670Both ends with adhesive

MYR 94.85

1 Piece(s) 4 Day(s) or more 10Straight4080Standard Shape60High GradeStandard2021604020-0.0122160No

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 227.95

1 Piece(s) 45 Day(s) or more -Straight4080Standard Shape60Precision GradeStandard1221604020-0.0082160No

MYR 189.76

1 Piece(s) 5 Day(s) or more -Straight4080Standard Shape60High GradeStandard2021604020-0.0122160Single end seal

MYR 238.86

1 Piece(s) 5 Day(s) or more -Straight4080Standard Shape60Precision GradeStandard1221604020-0.0082160Single end seal

MYR 173.04

1 Piece(s) 2 Day(s) 10Straight4080Standard Shape60High GradeStandard2021604020-0.0122160Both ends with adhesive

MYR 374.71

1 Piece(s) 5 Day(s) or more -Straight Open Type / Clearance Adjustment Type4080[Open Type, Clearance Adjusting Type] Open Type60High GradeOpen Type2021604020-0.0122160Both ends with adhesive

MYR 276.27

1 Piece(s) 34 Day(s) or more 10Straight4080Standard Shape60Precision GradeStandard1221604020-0.0082160Both ends with adhesive

MYR 203.88

1 Piece(s) 4 Day(s) or more 10Straight50100Standard Shape80High GradeStandard2038207940-0.0123820No

MYR 204.13

1 Piece(s) 4 Day(s) or more 10Straight50100Standard Shape80High GradeStandard2038207940-0.0123820Both ends with adhesive

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

MYR 238.69

1 Piece(s) 5 Day(s) or more -Straight60110Standard Shape90High GradeStandard25471010000-0.0154710No

MYR 315.69

1 Piece(s) 5 Day(s) or more -Straight60110Standard Shape90High GradeStandard25471010000-0.0154710Single end seal

MYR 264.00

1 Piece(s) 4 Day(s) or more 10Straight60110Standard Shape90High GradeStandard25471010000-0.0154710Both ends with adhesive

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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

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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