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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