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  • Linear ball bearings / steel / double annular groove / seal

    Číslo dílu:

    Nebyly nalezeny žádné nevyřízené. 15 návrhy.
    Množství:

    Obrysový výkres a tabulka specifikací

    Back to the Category Linear Ball Bushings

    Technical Drawing - Linear Ball Bushings

     

    Linear Bushings/Single Type/Cost Efficient Product:Related Image

     

    Basic Properties (e.g., material, hardness, coating, tolerance) - Linear Ball Bushings
     
    TypeOuter CylinderBallRetainerAmbient
    Operating Temp.
    Accessory
    MaterialHardnessMaterialMaterial
    C-LMUEN 1.3505 Equiv.58HRC~EN 1.3505 Equiv.Plastic-20~80°CSeal Material
    Nitrile Rubber

    Further specifications can be found under the tab More Information.

    Details on lubricants can be found in the catalog on p. 304

     

    Composition of a Product Code - Linear Ball Bushings

     

    Part Number
    C-LMU6

     

    General Information - Linear Ball Bushings

     

    Linear Ball Bushing Selection Details

    - Inner diameter [dr]: 3 mm – 100 mm
    - Total length [L]: 10 mm – 300 mm
    - Housing material: aluminum, stainless steel (stainless steel), steel
    - Ball material: stainless steel (stainless steel), steel
    - Ball cage material: plastic, stainless steel (stainless steel)
    - Surface treatment: without, chemically nickel-plated, LTBC
    - Radial offset (μm): 50 μm – 4 μm

    At MISUMI, you will find the following linear bearing versions: with locking ring with groove, with dust seal, with lubrication unit (MX), with grease nipple, housing open at the bottom/open, with clearance compensation, with flange, with centred flange, with round flange, with flattened round flange (compact flange), with square flange, with block housing, with wide barrel and ball housing, ball cage guides for linear and rotational movements (limited stroke).

     

    Description/Basics

    Linear ball bushings convert the rolling motion of steel balls (4) into infinite linear motion. They can implement highly precise and low-friction linear motion and can be used in almost all industries, e.g., in systems for semiconductor parts, electronic components and in food packaging.

    Ball recirculating bushings are used in conjunction with linear shafts. The linear movement mechanism uses steel balls (4) for unlimited linear movement.

    Linear bearing units allow linear shafts to travel indefinitely through steel balls that are constantly circulating within the running grooves directed by the outer cylinder and ball cage (3).

    Compared to plain bearings, ball bushings perform linear movements with lower friction and high accuracy. They are used in many applications, such as conveyors and semiconductor manufacturing facilities.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

     

    Linear Bearing Unit Design - (1) Dust Seal, (2) Outer Cylinder, (3) Ball Cage, (4) Steel Balls

     

    Dynamic friction coefficient in comparison

    DesignDynamic friction coefficient (μ)
    Miniature profile rail guide0.004 ~ 0.006
    Profile rail guide for medium and heavy loads0.002 ~ 0.003
    Cross roller guides0.001 ~ 0.003
    Cross roller tables0.001 ~ 0.003
    Linear ball bearing0.002 ~ 0.003
    Ball cage guides0.0006 ~ 0.0012

    The specified values are for comparison purposes only and are therefore not reference values.

     

    Areas of Application

    Linear ball bushings have a linear working direction and can be used for horizontal or vertical linear movements. Therefore, MISUMI linear ball bushings can be used in almost all industries. Since linear ball bushings are intended only for axial movement, rotational use would lead to premature fatigue or destruction of the ball bushings. For rotary movements, we therefore recommend ball cage guides, which enable not only infinite linear movements (stroke-limited) in addition to infinite rotary movements.

    Common applications are lifting mechanisms or guides for cylinders. The ball bushings are also a good variant for additional guide. In addition, these linear ball bushings are often found in 3D printers, metering systems, measuring devices, positioning and alignment devices, bending devices and sorting systems.

    For systems with increased particle development (e.g., dust and other abrasive particles), the linear systems should be protected with covers or bellows. The ingress of particles leads to a clumping of the lubricating grease or to significantly increased abrasion. By clumping the grease, the balls block in the ball circulation, which results in unscheduled maintenance.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings
    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

      

    Materials

    Linear ball bearings consist of different materials due to their design and the individual components. MISUMI uses high-quality materials to achieve the longest possible service life. The following materials are available:

    - External cylinder: stainless steel (stainless steel) ~56HRC, steel with ~58HRC
    - Ball: stainless steel (stainless steel), steel
    - Ball cage: plastic, stainless steel (stainless steel)
    - Housing: aluminum, stainless steel (stainless steel), steel
    - Seal: nitrile rubber

    You can find more detailed material information in the tab Technical Drawing.

     

    Coatings

    To protect linear ball bushings from corrosion, the surface can be chemically nickel-plated.

    As an alternative to a chemical nickel-plating, ball bushings can also be coated with LTBC. The LTBC coating (Low Temperature Black Chrome Platinum) is a surface treatment that protects against corrosion and has low reflection. The coating consists of a 5 μm thick chrome ceramic layer with fluoropolymer infusion and it deposits as a black film. In addition, the LTBC coating is crack-proof and interchangeable and is therefore resistant to delamination due to extreme or repeated bending. LTBC-coated linear ball bearings are thus particularly suitable for locations where corrosion or light reflections are undesirable.

    Note: the inner wall of LTBC coated linear bushing units is not surface treated.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    LTBC-coated linear ball bushing - state after 50 km glide test under 412N load.

     

    Comparison test of corrosion protection

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    Salt water spray test according to JIS H8502. Test piece: simple flanged linear ball bushing
    (1) EN 1.3505 equiv., (2) EN 1.4125 equiv., (3) chemically nickel-plated, (4) LTBC coating, (hr = duration in hours)

     

    Instructions for Use / Installation Information - Linear Ball Bushings

     

    Instructions for use

    - MISUMI linear bearings should be used in conjunction with MISUMI linear shafts.
    - We recommend using a hardened linear shaft in the g6 tolerance.
    - An additional hard chrome plating of the linear shaft makes it more wear-resistant.
    - When installing ball bushings in housings, we recommend an H7 housing tolerance. Too close a tolerance will reduce the internal contact travel [dr] to the shaft and can lead to increased wear and premature failure.
    - The utilisation of two ball bushings on a steel shaft improves the shaft guide in a system. However, if the angular errors are too high, a self-aligning linear ball bushing should be selected.
    - When utilising two linear shafts, the drive should be centred in the system to avoid unnecessary stresses/lever effects.
    - The service life, also called nominal service life, should be calculated using the present load case. Here you can perform your service life calculation.
    - Depending on local conditions such as temperature, humidity and gases, a variant made of stainless steel or an LTBC coating is recommended.
    - When the linear shafts bend sharply, a self-aligning/self-adjusting linear ball bushing should be selected.

     

    Installation Information

    General installation instructions for linear ball bushings and linear shafts

    MISUMI linear ball bushings should be used in conjunction with MISUMI linear shafts (hardened, tolerance g6).

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    MISUMI tolerance range: inner diameter linear ball bushings (LMU) and outer diameter linear shafts (SFJ).

     

    General installation instructions for linear ball bushings and housings

    MISUMI linear ball bushings should be used in conjunction with MISUMI housings (tolerance H7).

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    MISUMI tolerance range: outer diameter of linear ball bushing and inner diameter of housing.

     

    Standard linear ball bushing installation instructions

    1. When installing standard linear ball bushings, you can use the following locking means: retaining rings (clamping rings), stoppers

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    (1) retaining rings, (2) housing, (3) stopper/LMST fixing plate

     

    2. Ball bushings are not suitable for rotary motion and applications requiring repetitive insertion and removal of linear shafts. Such a misuse of the linear ball bushing could damage the recirculating ball bushing.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

     

    3. Simple linear ball bushings are not suitable for large torque loads (offset load/lever effect). The use of double or multiple linear bushings is recommended for these load cases.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    (1) Linear ball bushing with two grooves

     

    4. When assembling linear shafts, forceful slanted insertion into the linear ball bushing can cause the ball cage to bend and the balls to fall out. Be sure to centre the steel shaft to the linear ball bushing before inserting the steel shaft into the linear ball bushing.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

     

    Installation instructions for linear ball bushings with stopper/fixing plate

    Through the stopper plates, the versions can be designed independently of the housing length.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    (1) Attachment, (2) linear ball bushing – standard, (3) linear shaft, (4) LMST fixing plate

     

    The stopper plates enable the ball sleeve and linear shaft to be installed flush against the end faces.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    (1) Linear shaft, (2) housing, (3) linear ball bushing – standard, (4) spacer sleeve LBS/LBSA for linear ball bushings, (5) LMST fixing plate

     

    The LMST fixing plates can also be used to lock linear bushings in place.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    (2) housing, (4) LMST fixing plate

     

    Assembly Instructions for Linear Ball Bushings with Flange and Lubrication Unit MX

    When fastening the linear ball bushing with the lubrication unit MX, do not insert the housing of the lubrication unit as guide as shown in (2), as this can damage the housing. Instead, use the flange and guide version as shown in (3).

    Do not disassemble the linear ball bushing with flange and lubrication unit MX, as this will impair function.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

     

    Assembly Instructions for Linear Ball Bushings with Housing and without Cylinder Pin Hole

    During interface assembly, centring on the lateral reference surface can be eliminated by means of the cylinder pin holes.

    This reduces the machining effort of the upper plate to be mounted on the block.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings
    Linear ball bushing with housing
    Positioning with plate end cover
    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings
    Linear ball bushing with housing
    Positioning with cylinder pins

      

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings
    Linear ball bushing with housing (wide version)
    Positioning with plate end cover
    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings
    Linear ball bushing with housing (wide version)
    Positioning with cylinder pins

      

      

    Maintenance - Linear Ball Bushings

     

    General Maintenance Instructions

    Grease the rows of balls inside the ball bushing before use. Then grease regularly during use. Grease reduces friction by forming a layer between the balls and rolling shaft surfaces and prevents seizing. Loss of grease and degradation of grease shorten the service life of linear guides.

    - Recommended grease: lithium soap grease
    - Recommended lubrication interval: every 6 months
    *Every 3 months for extended work or every 1000 km. Maintenance intervals vary depending on the application and ambient conditions.

     

    Lubrication

    Linear ball bushings from MISUMI are delivered coated with a corrosion protection oil. Exceptions to this are the designs with lubrication unit MX. After removing the anti-corrosion oil, we recommend lubricating the bearings.

    If you select one of the following lubricants in the configurator, you can order pre-lubricated versions. The versions L, G and H are prefilled with grease, whereby L and G offer a strong reduction in particle formation by means of a suitable grease distribution during operation (see quantitative comparison of particle formation below). Lubrication units MX are filled with lithium soap grease.

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

     

    Assembly of the lubrication unit MX

    The lubrication unit MX is equipped with a fibre insert with lubricant. The capillary effect allows the lubricant to be properly applied to contact surfaces. For this purpose, a constant oil film is formed between balls and steel shaft, which significantly prolongs the lubrication intervals.

     

    Linear ball bearings - linear bearings - recirculating ball bushing - recirculating ball bushings - linear bearing unit - linear bearing units - ball bushing - ball bushings

    Recirculation ball bushing with lubrication unit - (1) MX Lubrication Unit, (2) MX Lubrication Unit - Plastic Housing, (3) Lubricant Pads, (4) Dust Seal, (5) Balls, (6) Linear Shaft

     

    Properties of the MX lubrication unit

    Longer maintenance intervals: the long-lasting lubricant performance leads to a significant reduction in maintenance, especially in machine and equipment environments where lubrication is difficult to achieve.
    Environment: the MX lubrication unit helps reduce lubricant consumption and thus protects the environment.
    Cost benefit: it contributes to reducing maintenance costs and failure rate caused by failing to lubricate.
    Less effort: it is not necessary to refill the lubricant prior to use, since the ball parts are already filled with a lithium soap-based grease in addition to the lubrication unit.

     

    Comparison test of linear ball bearings and linear ball bearings with lubrication unit

    Test conditions:
    - Sample:
    linear ball bushing LMU12 with rust protection oil and linear ball bushing with lubrication unit LMU-MX12
    - Effective load: 206N (50% of the dynamic load rating of 412N)
    - Average speed: 42 m/min (0.7 m/s)
    - Stroke: 100 m
    - Lubricant: lubricating grease, only initial filling (only LMU-MX12)
    - Shaft material: EN 1.3505 Equiv. (58HRC)
    - Duration: 24-hour continuous operation
    *The above test conditions serve only as reference values and cannot be considered as a manufacturer warranty.

     

    Test result:

    With an effective test load of 50% of the load-carrying capacity of 412N, the design with the MX lubrication unit could achieve a continuous output of 2.5-fold longer than with no MX lubrication unit.
    *Since the 2007 catalogue, the data have been updated after the safety limit has been confirmed by further data from test results.

     

    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen

    Endurance test result - standard linear ball bearing LMU, linear ball bearing LMU-MX with lubricant unit

     

    Supplementary Article

     

    Linear Shaft

    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen

     

    Retaining Ring

    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen

     

    Set Collar / Clamping Ring

    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen

     

    Accessories for Linear Ball Bearing

    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen

     

    Shaft Holder

    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen

     

    Industrial Applications
    3D printer industry
    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen
    Automotive industry
    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen
    Pharmaceutical industry
    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen
    Packaging industry
    Linearkugellager - Linearlager - Kugelumlaufbuchse - Kugelumlaufbuchsen - Linearlagereinheit - Linearlagereinheiten - Kugelbuchse - Kugelbuchsen

    Seznam čísel dílů

    Počet položek

    [dr] Inner Diameter

    (mm)

    [L] Length (Total)

    (mm)

    [D] Outer Diameter

    (mm)

    Basic Load Rating Dynamic Rating (Detail)

    (N)

    Basic Load Rating Static Rating

    (N)

    Minimální objednací množství
    3
    10
    7
    69
    105
    1 kusů
    4
    12
    8
    88
    127
    1 kusů
    5
    15
    10
    167
    206
    1 kusů
    6
    19
    12
    206
    265
    1 kusů
    8
    24
    15
    265
    380
    1 kusů
    10
    29
    19
    372
    549
    1 kusů
    12
    30
    21
    412
    598
    1 kusů
    13
    32
    23
    510
    784
    1 kusů
    16
    37
    28
    775
    1180
    1 kusů
    20
    42
    32
    882
    1370
    1 kusů
    25
    59
    40
    980
    1570
    1 kusů
    30
    64
    45
    1570
    2740
    1 kusů
    35
    70
    52
    1670
    3140
    1 kusů
    40
    80
    60
    2160
    4020
    1 kusů
    50
    100
    80
    3820
    7940
    1 kusů
    Jednotková cena (bez DPH)(Jednotková cena včetně DPH)
    Standardní datum odeslání
    2.16 €
    ( 2.57 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    2.04 €
    ( 2.43 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    2.04 €
    ( 2.43 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    1.94 €
    ( 2.31 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    1.88 €
    ( 2.24 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    1.94 €
    ( 2.31 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    1.87 €
    ( 2.23 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    2.00 €
    ( 2.38 € )
    5 pracovních dnů
    2.37 €
    ( 2.82 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    3.12 €
    ( 3.71 € )
    5 pracovních dnů
    3.93 €
    ( 4.68 € )
    Skladová položka – 1 pracovní denK dispozici odeslání ve stejný den
    5.40 €
    ( 6.43 € )
    5 pracovních dnů
    7.78 €
    ( 9.26 € )
    5 pracovních dnů
    11.77 €
    ( 14.01 € )
    5 pracovních dnů
    13.72 €
    ( 16.33 € )
    5 pracovních dnů

    Podrobné údaje

    Základní informace

    Pozor

    • No seal supplied for dr=3 or 4.
    • No seal supplied for dr=3 or 4.

    Náčrt a specifikace

    Back to the Category Linear Ball Bushings

    Technical Drawing - Linear Ball Bushings

     

    Linear Bushings/Single Type/Cost Efficient Product:Related Image

     

    Specification Tables - Linear Ball Bushings

     

    Part NumberDLBWD1Eccentricity
    (Max.)
    Rows of BallsMass
    (g)
    TypedrTolerance Tolerance Tolerance Tolerance
    C-LMU3+0.003
    -0.011
    7+0.006
    -0.011
    10+0.1
    -0.2
    ----0.01641.4
    4812--2
    5101580
    -0.4
    1.19.64
    6+0.003
    -0.012
    12+0.006
    -0.013
    19+0.2
    -0.4
    11.311.50.0248.5
    8152415.314.317
    1019+0.006
    -0.015
    2919.41.31831
    12213020.42041
    1323322246
    16283723.31.62773
    20+0.003
    -0.013
    32+0.006
    -0.018
    4227.330.50.030598
    254059+0.2
    -0.5
    37.30
    -0.5
    1.85386236
    30456440.843262
    35+0.003
    -0.015
    52+0.006
    -0.021
    7045.32.1490.040425
    40608056.357654
    508010068.82.676.51700
    No seal for dr=3 and 4. No-Seal Type has lower sliding resistance (0.4 ~ 1.2N) and moves smoothly. To prevent intrusion of dust on sliding contact surface, dust resistance measures should be taken separately.
    Spacers and Holding Plates for linear bushings can be selected from P.238.
    For Precautions for Use, refer to P. 221.
    ■Basic Load Rating
    drBasic Load Rating
    C (Dynamic) NCo (Static) N
    369105
    488127
    5167206
    6206265
    8265380
    10372549
    12412598
    13510784
    167751180
    208821370
    259801570
    3015702740
    3516703140
    4021604020
    5038207940
    kgf=Nx0.101972
    ■Recommended Tolerance of Shaft Dia. and Housing Dia.
    drShaft Dia.Housing Dia.
    g6 Tolerance Tolerance
    3−0.002
    −0.008
    7+0.021
    +0.006
    4-0.004
    -0.012
    8
    510
    612+0.024
    +0.006
    8-0.005
    -0.014
    15
    1019+0.027
    +0.006
    12-0.006
    -0.017
    21
    1323
    1628
    20-0.007
    -0.020
    32+0.031
    +0.006
    2540
    3045
    35-0.009
    -0.025
    52+0.036
    +0.006
    4060
    5080
    *The above tolerance is recommended for fitting with shaft and assembly of housing.
    *When using the linear bushings in transfer as a simplified guide, combination with hardened g6 shaft is recommended.
    *Combination of C-VALUE linear bushings and C-VALUE shafts is recommended, when used in transfer or other purposes, which do not place importance on a gap between a linear bushing and linear shaft or sliding properties.