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    LM12UU Metric Linear Ball Bearings with Rubber Seals

    $9.15
    Linear motion 12mm ball bushing has a steel outer ring with grooves for a circlip and a polyamide ball retainer with 4 ball circuits. It has elastomer seals from both sides. Cavities can also capture invading dirt, preventing potential blockages. Smooth moving, low friction, high rigidity and long life.
    SKU: ATO-LBB-LM12
    *
    This product has a minimum quantity of 10
    Free Shipping Worldwide
    Delivery date: 6-12 days

    Closed type ball bushing has a 12mm bore with double side rubber seal. It can provide low friction motion along a single axis, hence find a wide range of applications in DIY and robotics prototyping. Easy assembly by just pressing in - no additional retention necessary.

    Specifications

    lm uu linear bearing dimension

    Nominal shaft diameter Resin retainer dr
    LM…UU Ball circuit Weight LM…UU-AJ Ball circuit Weight LM…UU-OP Ball circuit Weight mm Tolerance
    Precision High
    8mm LM8UU 4 15g LM8UU-AJ 4 14.7g - - - 8 0
    -6μm
    0
    -9μm
    10mm LM10UU 4 29.5g LM10UU-AJ 4 29g LM10UU-OP 3 23g 10
    12mm LM12UU 4 31.5g LM12UU-AJ 4 31g LM12UU-OP 3 25g 12
    16mm LM16UU 5 69g LM16UU-AJ 5 68g LM16UU-OP 4 52g 16
    20mm LM20UU 5 87g LM20UU-AJ 5 85g LM20UU-OP 4 69g 20 0
    -7μm
    0
    -10μm
    25mm LM25UU 6 220g LM25UU-AJ 6 216g LM25UU-OP 5 188g 25
    30mm LM30UU 6 250g LM30UU-AJ 6 245g LM30UU-OP 5 210g 30
    35mm LM35UU 6 390g LM35UU-AJ 6 384g LM35UU-OP 5 335g 35 0
    -8μm
    0
    -12μm
    40mm LM40UU 6 585g LM40UU-AJ 6 579g LM40UU-OP 5 500g 40
    50mm LM50UU 6 1580g LM50UU-AJ 6 1560g LM50UU-OP 5 1340g 50
    60mm LM60UU 6 1860g LM60UU-AJ 6 1820g LM60UU-OP 5 1610g 60 0
    -9μm
    0
    -15μm

     

    Major dimensions and tolerance Eccentricity Radial clearance (Max) Basic load rating
    D L B W D1 h h1 θ
    mm Tolerance mm Tolerance mm Tolerance Precision High Dynamic  Static
    15 0
    -11μm
    24 0
    -200μm
    17.5 0
    -200μm
    1.1mm 14.3mm 1mm - - 8μm 12μm -3μm 274cN 392cN
    19 0
    -13μm
    29 22 1.3mm 18mm 1mm 6.8mm 80° -4μm 372c N 549co N
    21 30 23 1.3mm 20mm 1.5mm 8mm 80° 510c N 784co N
    28 37 26.5 1.6mm 27mm 1.5mm 11mm 80° -6μm 774c N 1180co N
    32 0
    -16μm
    42 30.5 1.6mm 30.5mm 1.5mm 11mm 60° 10μm 15μm 882c N 1370co N
    40 59 0
    -300μm
    41 0
    -300μm
    1.85mm 38mm 2mm 12mm 50° 980c N 1570co N
    45 64 44.5 1.85mm 43mm 2.5mm 15mm 50° -8μm 1570c N 2740co N
    52 0
    -19μm
    70 49.5 2.1mm 49mm 2.5mm 17mm 50° 12μm 20μm 1670c N 3140co N
    60 80 60.5 2.1mm 57mm 3mm 20mm 50° -10μm 2160c N 4020co N
    80 100 74 2.6mm 76.5mm 3mm 25mm 50° -13μm 3820c N 7940co N
    90 0
    -22μm
    110 85 3.15mm 86.5mm 3mm 30mm 50° 17μm 25μm 4700c N 10000co N

    lm luu linear bearing dimension

    Nominal shaft diameter LN…LUU Ball circuit Major dimensions and tolerance
    dr D L B W D1
    mm Tolerance mm Tolerance mm Tolerance mm Tolerance
    8mm LM8LUU 4 8 0
    -10μm
    15 -13μm 45 0
    -300μm
    35 0
    -300μm
    1.1mm 14.3mm
    10mm LM10LUU 4 10 19 -16μm 55 44 1.3mm 18mm
    12mm LM12LUU 4 12 21 57 46 1.3mm 20mm
    16mm LM16LUU 5 16 28 70 53 1.6mm 27mm
    20mm LM20LUU 5 20 0
    -12μm
    32 -19μm 80 61 1.6mm 30.5mm
    25mm LM25LUU 6 25 40 112 0
    -400μm
    82 0
    -400μm
    1.85mm 38mm
    30mm LM30LUU 6 30 45 123 89 1.85mm 43mm
    35mm LM35LUU 6 35 0
    -15μm
    52 -22μm 135 99 2.1mm 49mm
    40mm LM40LUU 6 40 60 151 121 2.1mm 57mm
    50mm LM50LUU 6 50 80 192 148 2.6mm 76.5mm
    60mm LM60LUU 6 60 0
    -20μm
    90 -25μm 209 170 3.15mm 86.5mm

    Tips:  Guide to using Linear Ball Bearings

    Linear ball bearings find a wide range of applications in automation industry. To make the most of these products, we need to pay attention to the following points:Grease may be applied prior to use to improve smoothness.

    1. Inside a linear ball bearing, the ball bearings themselves contact the smooth shaft directly. This means the shaft must be lubricated from time to time in order to keep the system running well. Successful operation of linear ball bearing systems is highly contingent on the presence of saturating lubrication at every single rotation of the shaft within the bushing. Note that different types of lubricating oil can not be mixed, otherwise the mixed oil will not improve the performance and will even cause adverse effects. Selecting the right grease for specific applications is critical. Maintain lubrication of optical shafts and guides during operation.
    2. To minimize the wear of linear bearings during operation is another significant point. It’s natural even for ATO's linear bearings with such high quality and great performance to have abrasion after long-time use. So maintaining lubrication at every single rotation of the shaft will be helpful for reducing abrasion and extending life span.
    3. Do not disassemble the linear bearing by yourself. If you do need to disassemble the device, ask professionals for help lest any accessory gets lost in your disassembly.
    4. The rolling elements in the bearing cartridge can be lubricated and sealed completely in between the inner and outer raceways of the bearing in order to prevent any exposure from environmental contaminants. Bearings with oil seals on both sides can work in places where there is a lot of dust or where foreign matter is easy to invade.
    5. Require regular cleaning and maintenance.
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