China High Strength Tapered Roller Bearings 388A/383A 3981/3920 65231/65500 65235/65500 745/742 66586/66520 39236/39433 H913840/H913810 JP6049/JP6010(558-S/553A)

Bearing type: Inner ring type/Outer diameter type Inner diameter x Outer diameter x Height (mm) 388A/383A 57.531x100x21 0.66 3981/3920 58.737x112.712x30.162 1.34 65231/65500 58.737x127x44.45 2.66 3978/3920 59.53x112.712x30.162 1.33 65235/65500 59.88x127x44.45 2.63 745/742 59.931x150.089x44.45 4.29 28980/28921 59.977x100x25.4 0.75 66586/66520 59.977x122.238x33.338 1.63 39236/39412 59.987x104.775x21.433 0.74 3977X/3921XA 59.987x109.985x29.751 1.2 39236/39433 59.987x110.058x22 0.86 3977X/3920 59.987x112.712x30.162 1.29 558-S/553A 59.987x125x38.1 2.13 558-S/553-SA 59.987x129.944x38.1 2.37 HM911244/HM911210 59.987x130.175x34.1 1.99 H913840/H913810 59.987x146.05x41.275 3.19 JP6049/JP6010 60x100x21 0.59

• 1.Structural Features: Both inner and outer rings feature tapered raceways, with truncated cone-shaped rolling elements. The inner ring, outer ring, rolling elements, and cage collectively form a complete, separable assembly.
• 2.Load-bearing capacity: Capable of simultaneously withstanding radial loads and unidirectional axial loads. Axial load capacity increases with contact angle; a larger contact angle makes it suitable for applications where axial loads constitute a higher proportion.
• 3.Applicable Conditions: Commonly used in machinery subjected to combined loads, such as automotive hubs, axles, and gearboxes, as well as machine tool spindles and mining equipment. Particularly suitable for low-to-medium speed applications involving impact or vibration.
• 4.Installation Requirements: Adjust the clearance during installation (achieved through relative axial displacement between the inner and outer rings). Excessive clearance may cause vibration and noise, while insufficient clearance may accelerate wear due to increased heat generation. A suitable locking device must be used in conjunction.
• 5.Performance Limitations: Cannot withstand bidirectional axial loads. For bidirectional load-bearing requirements, must be installed in pairs with opposing directions.