32300 Series	 Tapered Roller Bearing
32300 Series	 Tapered Roller Bearing
32300 Series	 Tapered Roller Bearing

32300 Series

The 32300 Series Tapered Roller Bearings are high-capacity separable bearings designed to manage significant radial and axial loads simultaneously. This series features a steep internal geometry where the contact angles of the inner raceway (cone), outer raceway (cup), and tapered rollers converge at a common apex on the bearing axis. This specific design ensures true rolling motion and low friction during operation. Manufactured from high-purity chrome steel, the 32300 series is characterized by its larger cross-section and increased roller diameter compared to standard series, providing enhanced load-carrying capacity and structural rigidity. These bearings are typically mounted in pairs to achieve bidirectional axial constraint, making them fundamental components in heavy-duty mechanical power transmissions and vehicle axle assemblies.

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Technical Specifications and Performance Profile: 32300 Series Tapered Roller Bearings

Core Technical Advantages

  • Combined Load Management: Engineered to support high-magnitude thrust and radial forces through optimized tapered contact angles.
  • Separable Components: The cup and the cone assembly (rollers and cage) are independently mountable, facilitating easier maintenance and precision clearance adjustment.
  • High Dimensional Stability: Specialized heat treatment processes ensure the bearing maintains its geometric tolerances under fluctuating thermal conditions.
  • Low Operational Friction: Precision-ground raceways minimize surface roughness, reducing torque and heat buildup during high-speed rotation.

Technical Characteristics

Material Specification GCr15 High-Carbon Chromium Bearing Steel
Cage Material Pressed Steel / Machined Brass (Application Dependent)
Precision Grade P0 (Normal), P6, P5
Loading Type Unidirectional Axial + High Radial
Temperature Range -30°C to +120°C (Standard Lubrication)

Primary Application Scenarios

  • Automotive Powertrains: Heavy-duty truck wheel hubs, differentials, and transmission systems.
  • Industrial Machinery: Primary components in gearbox reduction units, rolling mills, and mining equipment.
  • Construction Equipment: Integrated into the final drive assemblies of excavators and bulldozers requiring shock load resistance.
  • Agricultural Engineering: High-stress pivot points and drive shafts in tractors and harvesting machinery.

Installation and Maintenance Protocols

Storage and Handling

Bearings should be stored in a clean, dry environment with a constant temperature to prevent moisture condensation. The original protective grease coating must remain intact; do not remove the anti-rust packaging until the moment of installation. Avoid vertical stacking beyond specified heights to prevent elliptical deformation of the rings.

Usage Precautions

  • Axial Clearance Adjustment: During assembly, the endplay or preload must be accurately set according to manufacturer specifications to avoid premature fatigue or overheating.
  • Contamination Control: Ensure the housing and shaft are free of abrasive particles; utilize compatible seals to maintain lubricant purity in outdoor or dusty environments.
  • Lubrication Selection: Use Extreme Pressure (EP) additives in greases for applications involving heavy shock loads to maintain a sufficient oil film between the rollers and raceways.
  • Alignment Verification: Ensure shaft-to-housing concentricity is within specified limits to prevent edge loading on the tapered rollers.

Product parameters

Designation Principal dimensions(mm) Basic load ratings(KN) Pu Speed ratings(rpm) Weight(Kg) ISO335  Dimensions (mm) Abutment and fillet dimensions (mm) Value
d1 D B dyc(Cr) stc(Cor) Speed Ratings Limiting Speed Dimensions (ABMA) d d1~ B C r1,2(min) r3,4(min) a da(max) db(min) Da(min) Da(max) Db(min) Ca(min) Cb(min) ra(max) rb(max) e Y Yo
32303J2/Q 17 47 20,25 40 33,5 3,65 12000 16000 0,17 2FD 17 30,7 19 16 1 1 12 24 23 39 41 43 3 4 1 1 0,28 2,1 1,1
32304J2/Q 20 52 22,25 51 45,5 5 12000 14000 0,23 2FD 20 34,5 21 18 1,5 1,5 14 27 27 43 45 47 3 4 1,5 1,5 0,3 2 1,1
32305J2 25 62 25,25 60,5 63 7,1 8000 12000 0,36 2FD 25 41,7 24 20 1,5 1,5 15 33 32 52 55 57 3 5 1,5 1,5 0,3 2 1,1
32306J2/Q 30 72 28,75 88 85 9,65 7500 10000 0,55 2FD 30 48,7 27 23 1,5 1,5 18 39 37 59 65 66 3 5,5 1,5 1,5 0,31 1,9 1,1
32307J2/Q 35 80 32,75 95,2 106 12,2 6700 9000 0,73 2FE 35 54,8 31 25 2 1,5 20 44 44 66 71 74 4 7,5 2 1,5 0,31 1,9 1,1
32307BJ2/Q 35 80 32,75 93,5 114 13,2 6300 8500 0,80 5FE 35 59,3 31 25 2 1,5 24 42 44 61 71 76 4 7,5 2 1,5 0,54 1,1 0,6
32307/37BJ2/Q 37 80 32,75 93,5 114 13,2 6300 8500 0,85 - 37 54,8 31 25 2 1,5 20 44 44 66 71 74 4 7,5 2 1,5 0,54 1,1 0,6
32308J2/Q 40 90 35,25 117 140 16 5300 8000 1,00 2FD 40 62,9 33 27 2 1,5 23 51 49 73 81 82 3 8 2 1,5 0,35 1,7 0,9
32309J2/Q 45 100 38,25 140 170 20,4 4800 7000 1,35 2FD 45 70,4 36 30 2 1,5 25 57 53 82 91 93 4 8 2 1,5 0,35 1,7 0,9
32309BJ2/QCL7C 45 100 38,25 156 176 20 5000 6700 1,45 5FD 45 74,8 36 30 2 1,5 30 55 53 76 91 94 5 8 2 1,5 0,54 1,1 0,6
32310J2/Q 50 110 42,25 172 212 24 4300 6300 1,80 2FD 50 77,7 40 33 2,5 2 27 63 60 90 100 102 5 9 2 2 0,35 1,7 0,9
32310TN9 50 110 42,25 172 212 24 4300 6300 1,80 2FD 50 77,7 40 33 2,5 2 27 63 60 90 100 102 5 9 2 2 0,35 1,7 0,9
32310BJ2/QCL7C 50 110 42,25 183 216 24,5 4500 6000 1,85 5FD 50 82,9 40 33 2,5 2 34 62 60 83 100 103 5 9 2 2 0,54 1,1 0,6
32311J2 55 120 45,5 198 250 28,5 4000 5600 2,30 2FD 55 84,6 43 35 2,5 2 29 68 65 99 112 111 5 10,5 2 2 0,35 1,7 0,9
32311BJ2/QCL7C 55 120 45,5 216 260 30 4300 5600 2,50 5FD 55 90,5 43 35 2,5 2 36 67 65 91 112 112 5 10,5 2 2 0,54 1,1 0,6
32312J2/Q 60 130 48,5 229 290 34 3600 5300 2,85 2FD 60 91,7 46 37 3 2,5 31 74 72 107 118 120 6 11,5 2,5 2 0,35 1,7 0,9
32312BJ2/QCL7C 60 130 48,5 255 305 35,5 3800 5000 2,80 5FD 60 98,1 46 37 3 2,5 38 73 72 99 118 122 6 11,5 2,5 2 0,54 1,1 0,6
32313J2/Q 65 140 51 264 335 40 3400 4800 3,45 2GD 65 99,2 48 39 3 2,5 33 80 77 117 128 130 6 12 2,5 2 0,35 1,7 0,9
32313BJ2/QU4CL7CVQ267 65 140 51 285 345 40,5 3600 4800 3,35 5GD 65 105 48 39 3 2,5 41 79 77 107 128 131 6 12 2,5 2 0,54 1,1 0,6
32314J2/Q 70 150 54 297 380 45 3200 4500 4,30 2GD 70 106 51 42 3 2,5 36 86 82 125 138 140 6 12 2,5 2 0,35 1,7 0,9
32314BJ2/QCL7C 70 150 54 325 400 46,5 3400 4300 4,25 5GD 70 113 51 42 3 2,5 44 85 82 115 138 141 7 12 2,5 2 0,54 1,1 0,6
32315J2 75 160 58 336 440 51 3000 4300 5,20 2GD 75 113 55 45 3 2,5 38 92 87 133 148 149 7 13 2,5 2 0,35 1,7 0,9
32315BJ2/QCL7C 75 160 58 380 475 55 3200 4000 5,55 5GD 75 120 55 45 3 2,5 46 90 87 124 148 151 7 13 2,5 2 0,54 1,1 0,6
32316J2 80 170 61,5 380 500 57 3000 4300 6,20 2GD 80 120 58 48 3 2,5 41 98 92 142 158 159 7 13,5 2,5 2 0,35 1,7 0,9
32317J2 85 180 63,5 402 530 60 2800 4000 6,85 2GD 85 126 60 49 4 3 42 103 99 150 166 167 7 14,5 3 2,5 0,35 1,7 0,9
32317BJ2 85 180 63,5 391 560 62 2800 4000 7,50 5GD 85 135 60 49 4 3 52 102 99 138 166 169 7 14,5 3 2,5 0,54 1,1 0,6
32318J2 90 190 67,5 457 610 67 2600 4000 8,40 2GD 90 133 64 53 4 3 44 109 105 157 176 177 7 14,5 3 2,5 0,35 1,7 0,9
32319J2 95 200 71,5 501 670 72 2400 3400 11,0 2GD 95 141 67 55 4 3 47 115 110 166 186 186 8 16,5 3 2,5 0,35 1,7 0,9
32320J2 100 215 77,5 572 780 83 2200 3000 12,5 2GD 100 151 73 60 4 3 51 123 115 177 201 200 8 17,5 3 2,5 0,35 1,7 0,9
32321J2 105 225 81,5 605 815 85 2000 3000 14,5 2GD 105 158 77 63 4 3 53 129 120 185 211 209 9 18,5 3 2,5 0,35 1,7 0,9
32322 110 240 84,5 627 830 86,5 1900 2800 17,0 2GD 110 168 80 65 4 3 55 137 125 198 226 222 9 19,5 3 2,5 0,35 1,7 0,9
32324J2 120 260 90,5 792 1120 110 1800 2600 21,5 2GD 120 181 86 69 4 3 60 148 135 213 245 239 9 21,5 3 2,5 0,35 1,7 0,9

about Yinin

Shanghai Yinin Bearing and Transmission Company was founded in 2009 and has over 20 years of experience in the bearing field. We are China 32300 Series Tapered Roller Bearing manufacturers and offer custom 32300 Series Tapered Roller Bearing factory. Since 1999, starting from representing bearing manufacturers in China, we have exported different kinds of bearings. Nowadays we are developing one completed sales and manufacturing bearings group.

Industry Applications

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Used for support, height, angle, joint, and rotating parts of medical equipment.

Used for support, rotation, motor and compressor parts of household appliances.

Used for rotation and movement of support and guide parts of automation equipment

In building structures, bearings can be used to connect different structural components.

In the production process of food and beverages, pumps are needed to transport liquids and compresso...

Bearings are used in aircraft and spacecraft engines to support rotating components such as turbines...

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