Four Row Cylindrical Roller Bearing

1.Product Introduction: Four-row structure, with load capacity 3.5-4 times that of single-row bearings, suitable for extreme heavy-load and low-speed scenarios.
2.Structure Type: Integrally forged inner ring/outer ring, four-row rollers + cage, multiple spacer rings, metal seal.
3.Dimension Range: Inner diameter: 100-2000mm, Outer diameter: 200-3000mm, Width: 80-500mm
4.Material: Inner ring/Outer ring/Rollers: GCr15/GCr15SiMn/20Cr2Ni4A; Cage: Stamped steel/brass
5.Accuracy: Class P0/P6, Class P5 for special requirements
6.Application Fields: Rolling mill work rolls/support rolls, mining machinery spindles, port ultra-heavy cranes
7.Key Inspection Items: Forging flaw detection (UT/MT), clearance consistency of four-row rollers, radial load capacity (≥10000kN)

Product Description

High-Capacity Four Row Cylindrical Roller Bearings for Extreme Industrial Environments

Customized Solutions for metallurgical, mining, and port machinery

When your equipment faces relentless heavy loads, high temperatures, or shock impacts, our four row cylindrical roller bearings deliver unmatched stability. Designed with four rows of precision-ground rollers and reinforced spacer rings, these bearings distribute stress evenly, achieving 3.5x higher radial load capacity than single-row designs. Whether you're operating rolling mills at 150°C or port cranes lifting 1,000+ tons, our roller bearing solutions ensure minimal downtime and maximum productivity.

Core Specifications

Parameter Specification
Dimensions Inner Diameter 100mm–5000mm (custom sizes available)
Load Capacity Radial up to 12,000kN | Axial up to 3,500kN
Temperature Range -50°C to +150°C (high-purity steel + advanced heat treatment)
Precision & Lubrication P4/P5 grades; pre-lubricated with high-temp grease or IoT oil systems

Key Advantages

  • Precision Manufacturing: Every four row cylindrical roller bearing undergoes 12+ quality tests to meet P4-grade tolerances.
  • Rapid Customization: Get non-standard bearings up to φ5000mm in 15-20 days.
  • Built to Endure: 99.9% of roller bearing units pass ex-factory inspections for wear resistance and thermal stability.

Where They Excel

  • Metallurgy: Withstand scorching 150°C environments in rolling mills, backed by carburized bearing steel that resists thermal deformation.
  • Mining: Absorb heavy shock loads in crushers using double-crowned rollers and reinforced cages.
  • Ports: Operate at low noise levels in crane trolleys using corrosion-resistant coatings for saltwater bearing applications.

Quality & Logistics

We verify steel purity via UT/MT checks, load testing, and dimensional validation. We maintain 1,000+ standard bearings in global stocks for 48-hour delivery and complete custom φ3000mm+ roller bearing orders in 15-20 days.

FAQs

Q: How do your four row cylindrical roller bearings handle 150°C temperatures?
A: We use carburizing heat treatment on ultra-clean steel, enhancing thermal stability without compromising load capacity in heavy bearing operations.

Q: Can you make bearings over φ5000mm?
A: Yes! Our modular production system allows custom outer diameters up to φ5000mm with a 20-day lead time for custom roller bearing units.

Q: Do you support legacy machinery upgrades for cylindrical roller bearing setups?
A: Our retrofit kits include pre-machined spacer rings and installation guides tailored to your equipment’s bearing specs.

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