KOYO Roll Neck Bearings for Rolling Mills

Roller neck bearings are core load-bearing components in steel rolling production lines. They are widely used in hot rolling, cold rolling, section steel, wire rod, and continuous casting equipment. These equipment need to operate continuously for long periods under extreme environments such as high load, high speed, high temperature, moisture, and iron oxide scale. Especially in hot rolling conditions, the requirements for bearing load-bearing capacity, fatigue resistance, corrosion resistance, and sealing performance are extremely high.

I. Typical Application Scenarios

  • Hot Strip Mill
  • Cold Strip Mill
  • Section Mill
  • Wire Rod Mill
  • Continuous Casting Machine Rolling System

II. Main Bearing Types

  1. Four-row tapered roller bearings (open/sealed) – used for cold and hot rolling support rolls
No. d(mm) D(mm) B(mm)
47TS443032 220 295 315
47TS483434 240 338 340
47TS493531 245 345 310
45D805337 400 530 370
EE649241D/310/311D 609.6 787.4 361.95
  1. Four-row cylindrical roller bearings – used in the necks of section steel rolling mills and wire rod rolling mills
No. d(mm) D(mm) B(mm)
138FC98750 690 980 750
151FC107750A 755 1070 750
154FC108770A 770 1075 770
164FC113800 820 1130 800
170FC118850 850 1180 850

3. Double-row tapered roller bearings – used for work rolls and intermediate rolls

No. d(mm) D(mm) B(mm)
45T615020 305 500 200
2TR400L 400 650 200
2TR510L 509.998 733.5 200.02

III. Core Technological Advantages

1. High Precision: Improves rolling accuracy and equipment operating efficiency, reducing energy consumption.
2. High Reliability: Based on long-term actual working condition verification, ensuring continuous and stable operation.
3. Long Service Life: New carburized steel and special heat treatment processes significantly extend service life.
4. Complete Solution: Integrated supply of bearings, seals, and lubrication systems.

Remarks:
1.Regarding NTN four-row tapered roller bearings except above-listed, please contact HSN.
2.For other types of bearings, please contact HSN.
3.This article is based on independent analysis of publicly available technical information and industry understanding, and aims to provide knowledge sharing. All brand names and trademarks mentioned in this article belong to their respective owners. HSN Bearing Group is an independent bearing supplier and technical service provider.

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