32310 Tapered Roller Bearing: Heavy Duty Performance For Industrial
Basic Parameters
- Bore diameter (d):50mm
- Outer diameter (D):110mm
- Width (T):40mm ~ 42.25mm
- Weight:Approximately 1.7~1.9kg
- Contact angle:12.95° (standard); special versions may feature increased angles (25°~29°)
Core Performance Parameters
- Dynamic load rating (Cr):173kN ~ 211kN
- Static load rating (C0r):211kN ~ 212kN
- Material:GCr15/SUJ2 high-carbon chromium bearing steel (surface hardness HRC58-62 after heat treatment)
- Precision class:P0 (standard)
- Limiting speed:4,500~6,300rpm (grease-lubricated)
Structural & Adaptability Parameters
- Structure:Separable (inner ring + roller assembly and outer ring are independent)
- Tolerance compatibility:Shaft tolerances (H7/k6); housing bore tolerances (J7)
- Standard compliance:ISO 355
- Environmental adaptability:
- Temperature resistance:Up to 816°C (stainless steel variants)
- Corrosion resistance:Available in stainless steel (e.g., SUS321) for corrosive environments
Application & Maintenance Parameters
- Typical application scenarios:
- Heavy-duty machinery (mining crushers, conveyors, gearboxes)
- Agricultural equipment (tractor wheel hubs, harvester transmissions)
- Automotive (heavy-duty truck rear axles, differentials)
- Energy equipment (wind turbine gearboxes, oil/gas pumps)
- Lubrication:
- Grease lubrication:Lithium-based grease (filling volume 10%-15% of bearing cavity); synthetic grease for high-temperature scenarios
- Oil lubrication:Suitable for high-speed/high-temperature operations (circulating oil systems recommended)
- Sealing options:
- Standard:Open design
- Optional:2RS (rubber seals), XAK (metal shields) (for dust/moisture protection)
Customization & Compatibility
- Adjustable parameters:
- Bore tolerances (P5 precision available)
- Contact angles (15°~29° for special orders)
- Surface coatings (phosphating, black oxide) for enhanced corrosion resistance
- Compatibility:Compliant with general specifications, supporting direct replacement of standard models
- Certifications:ISO 355
Bearing No. | Dimensions (mm) | Load Ratings (KN) | Mass |
d | D | T | B | C | R min | r min | C | C0 | kg |
32303 | 17 | 47 | 20.25 | 19 | 16 | 1.00 | 1.00 | 35.30 | 36.30 | 0.173 |
32304 | 20 | 52 | 22.25 | 21 | 18 | 1.50 | 1.50 | 46.00 | 47.50 | 0.241 |
32305 | 25 | 62 | 25.25 | 24 | 20 | 1.50 | 1.50 | 61.60 | 68.80 | 0.368 |
32306 | 30 | 72 | 28.75 | 27 | 23 | 1.50 | 1.50 | 81.60 | 96.40 | 0.563 |
32307 | 35 | 80 | 32.75 | 31 | 25 | 2.00 | 1.50 | 99.00 | 118.30 | 0.767 |
32308 | 40 | 90 | 35.25 | 33 | 27 | 2.00 | 1.50 | 115.70 | 147.80 | 1.049 |
32309 | 45 | 100 | 38.25 | 36 | 30 | 2.00 | 1.50 | 145.30 | 189.40 | 1.410 |
32310 | 50 | 110 | 42.25 | 40 | 33 | 2.50 | 2.00 | 177.50 | 236.10 | 1.936 |
32311 | 55 | 120 | 45.50 | 43 | 35 | 2.50 | 2.00 | 203.00 | 271.00 | 2.350 |
32312 | 60 | 130 | 48.50 | 46 | 37 | 3.00 | 2.50 | 226.70 | 303.00 | 2.900 |
32313 | 65 | 140 | 51.00 | 48 | 39 | 3.00 | 2.50 | 259.60 | 349.80 | 3.530 |
32314 | 70 | 150 | 54.00 | 51 | 42 | 3.00 | 2.50 | 298.90 | 408.50 | 4.350 |
32315 | 75 | 160 | 58.00 | 55 | 45 | 3.00 | 2.50 | 355.00 | 470.00 | 5.350 |
32316 | 80 | 170 | 61.50 | 58 | 48 | 3.00 | 2.50 | 378.00 | 497.00 | 6.320 |
32317 | 85 | 180 | 63.50 | 60 | 49 | 4.00 | 3.00 | 439.00 | 587.00 | 7.420 |
32318 | 90 | 190 | 67.50 | 64 | 53 | 4.00 | 3.00 | 461.00 | 614.00 | 8.610 |
32319 | 95 | 200 | 71.50 | 67 | 55 | 4.00 | 3.00 | 517.00 | 695.00 | 10.100 |
32320 | 100 | 215 | 77.50 | 73 | 60 | 4.00 | 3.00 | 491.00 | 637.00 | 12.200 |