Double Row Tapered Roller Bearing

1.Product Introduction: Its load - bearing capacity is 1.8 - 2.2 times that of single - row bearings, suitable for medium - heavy loads.
2.Structure Type: The inner ring has double - tapered raceways, the outer ring is fixed, with double - row rollers + cage and an intermediate spacer ring.
3.Size Range: Inner diameter 30 - 800mm, outer diameter 72 - 1200mm, width 30 - 200mm.
4.Material: Inner ring/Outer ring/Rollers: GCr15/GCr15SiMn/20Cr2Ni4A, cage: stamped steel / brass.
5.Precision: P0/P6 level.
6.Application Fields: Heavy - truck hubs, mining machinery spindles, port cranes.
7.Key Inspection Items: Consistency of double - row rollers, radial / axial load - bearing capacity, parallelism of the spacer ring.

Product Description

Double Row Tapered Roller Bearings Built for Extreme Industrial Demands

30+ years engineering precision for heavy-load, high-temperature, and impact-intensive applications.

When your machinery faces relentless radial and axial forces, Double Row Tapered Roller Bearings deliver unmatched stability. Designed to handle 1.8–2.2x heavier loads than single-row alternatives, these bearings combine robust construction with precision engineering. Whether you’re optimizing port cranes or reinforcing steel mill equipment, our solutions withstand temperatures up to 350°C and dynamic loads exceeding 1,200kN.

Technical Specifications

Parameter Specification
Dimensions ID 30–800mm • OD 72–1200mm (Up to φ5000mm)
Load Capacity Static 2,400kN • Dynamic 1,200kN
Temperature -50°C to +350°C
Precision P0/P6 (Up to P4 for medical grade)

Industry-Tailored Solutions

  • Metallurgy & Steel: Ceramic-coated cages ensure stable operation at 350°C for continuous casting rollers.
  • Port Machinery: Impact-resistant series with 20Cr2Ni4A alloy rollers absorbs 25G shock loads.
  • Medical Imaging: Ultra-precision P4-grade bearings provide whisper-quiet rotation (<20dB) for MRI scanners.

Customization & Quality

We provide 3D modeling, material upgrades (M50 steel/tungsten carbide), and advanced sealing for abrasive environments. Every Double Row Tapered Roller Bearing undergoes:

  • Material Purity: Spectrographic analysis of steel.
  • Dimensional Accuracy: Laser-guided raceway parallelism checks.
  • Final Validation: 72-hour endurance testing under peak loads.

FAQs

Q: How do your bearings handle 350°C heat in steel mills?
A: We use austempering heat treatment and ceramic cages to resist thermal expansion in Double Row Tapered Roller Bearings.

Q: Can you customize load ratios for crane slewing rings?
A: Yes—submit your axial/radial load specs for a tailored roller angle design.

Q: What ensures quality in φ3000mm+ bearings?
A: In-house forgings and CNC grinding eliminate supplier inconsistencies.

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