30300 series tapered roller bearing

Short Description:

Introduction: Tapered roller bearings have tapered inner and outer ring raceways and tapered rollers.They are designed to accommodate combined loads, i.e simultaneously acting radial and axial loads.The projection lines of the raceways meet at a common point on the bearing axis to provide true rolling and low friction.The axial load carrying capacity of tapered roller bearings increases with increasing contact angle.The size of the angle is related to the calculation factor, the larger the va...


  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Shenzhen
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

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    Product Tags

    Introduction:

    Tapered roller bearings have tapered inner and outer ring raceways and tapered rollers.They are designed to accommodate combined loads, i.e simultaneously acting radial and axial loads.The projection lines of the raceways meet at a common point on the bearing axis to provide true rolling and low friction.The axial load carrying capacity of tapered roller bearings increases with increasing contact angle.The size of the angle is related to the calculation factor, the larger the value , the larger the contact angle.A single row tapered roller bearing is typically adjusted against a second tapered roller bearing.

    Feature:

    MJE tapered roller bearing have both metric and inch systems that are standardized by bearing series and both systems are widely used.

    Radial and axial load capacity:

    Tapered roller bearings can support axial forces in one direction and high radial forces.They must normally be axially adjusted against a second bearing fitted in a mirror image arrangement.

    Compensation of angular misalignment:

    The modified line contact between the tapered rollers and raceways ensures optimum stress distribution at the contact points, prevents edge stresses and allows the bearings to undergo angular adjustment.

    At a load ratio P/Cr<0.2, the tilting of the bearing rings relative to each other must not exceed a maximum of 4 angular minutes.

    Lubrication:

    Tapered roller bearings can be lubricated by using oil or grease and its operating temperature is from -30 to +120 degree centigrade.

    Cages:

    Tapered roller bearings have pressed steel cages ,however, large-sized bearings use machined type cages while smaller sizes sometimes use plastic cages depending on the application.

    Additional codes:

    Suffix Description
    B Contact angle greater than the standard design
    HA3 Case-hardened inner ring
    HA1 Case-hardened inner and outer ring
    J Stamped steel cage, roller centered
    Q Optimized contact geometry and surface finish
    X Boundary dimensions changed to conform to ISO
    TN9 Class fiber reinforced PA66 cage,roller centered
    CLN Reduced tolerance for ring widths and total width in accordance with ISO tolerance class 6X
    CLO Accuracy to ABMA tolerance class 0 for inch bearings
    CLOO Accuracy to ABMA tolerance class 00 for inch bearings
    CL7C High performance design for Pinion bearing

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  • Bearing No. Shape Dimension(mm) Load Rating(KN) Max Speed(rpm) Weight
    Model d D B Cr Cor Grease Oil KG
    30302 15 42 13 22.8 21.5 9000 12000 0.095
    30303 17 47 14 28.2 27.2 8500 11000 0.130
    30304 20 52 15 30.5 28.4 8300 11000 0.170
    30305 25 62 17 46.8 48.0 6300 8000 0.270
    30306 30 72 21 59.0 63.0 5600 7000 0.400
    30307 35 80 21 75.2 82.5 5000 6300 0.520
    30308 40 90 23 90.8 108.0 4500 5600 0.755
    30309 45 100 25 108.0 130.0 4000 5000 0.990
    30310 50 110 27 130.0 158.0 3800 4800 1.280
    30311 55 120 29 152.0 188.0 3400 4300 1.650
    30312 60 130 31 170.0 210.0 3200 4000 1.990
    30313 65 140 33 195.0 242.0 2800 3600 2.500
    30314 70 150 35 218.0 272.0 2600 3400 2.980
    30315 75 160 37 252.0 318.0 2400 3200 3.600
    30316 80 170 39 278.0 352.0 2200 3000 4.290
    30317 85 180 41 305.0 388.0 2000 2800 4.980
    30318 90 190 43 342.0 440.0 1900 2600 5.900
    30319 95 200 45 317.0 368.0 2000 2600 6.350
    30320 100 215 47 344.0 400.0 1800 2400 7.860
    30321 105 225 49 371.0 432.0 1700 2300 8.850
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