NTN bearings are widely used in core equipment of the metal smelting industry. Relying on advanced materials and precision manufacturing processes, their products offer high load capacity, high-temperature resistance, impact resistance, and excellent sealing performance. They can effectively withstand the effects of dust, vibration, and other factors, enabling them to handle various extreme operating conditions with ease, significantly improving equipment reliability and extending service life.
Ⅰ.Bearing Types
The primary bearing type NTN applies in the rolling mills industry is the Four-Row Tapered Roller Bearing.
NTN four-row tapered roller bearings are mainly used in the roll necks of steel rolling mills and designed so that the load rating is maximized in the allowable space of the roll neck part.The cage type includes a pressed steel cage and a pin type cage. The pin type cage maximizes the number of rollers in the bearing to provide increased load capacity.
Ⅱ.Examples of NTN model numbers
① Metric four-row tapered roller bearing models
| Disignation | d(mm) | D(mm) | B(mm) | C(mm) |
E-625940 | 200 | 282 | 206 | 206 |
E-CRO-5218 | 260 | 360 | 272 | 272 |
E-625960 | 300 | 424 | 310 | 310 |
E-623068 | 340 | 520 | 278 | 278 |
E-CRO-7801 | 390 | 510 | 350 | 350 |
E-625996 | 480 | 678 | 494 | 494 |
E-CRO-13001 | 650 | 1030 | 560 | 560 |
E-CRO-16803 | 840 | 1170 | 840 | 840 |
② Imperial four-row tapered roller bearing model
| Disignation | d(mm) | D(mm) | B(mm) | C(mm) |
67986D/67920/67921D | 206.375 | 282.575 | 190.5 | 190.5 |
M252349D/M252310/M252310D | 269.875 | 381 | 282.575 | 282.575 |
HM259049D/HM259010/HM259010D | 317.5 | 447.675 | 327.025 | 327.025 |
LM263149D/LM263110/LM263110D | 355.6 | 457.2 | 252.412 | 252.412 |
EE234161D/234215/234216D | 406.4 | 546.1 | 268.288 | 288.925 |
CRO-10208 | 509.948 | 654.924 | 377 | 379 |
EE649241D/649310/649311DG2 | 609.6 | 787.4 | 361.95 | 361.95 |
M285848D/M285810/M285810DG2 | 825.5 | 1168.4 | 844.55 | 844.55 |
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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