Standard double row Spherical roller bearing

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Standard

GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN / VDEh,DIN / VDEh

Inner ring diameter

20mm-1800mm

Outer ring diameter

52mm-2180mm

Weight

0.2kg-4300kg

Material

52100/100Cr6/SUJ2/20Cr2Ni4A

Brand

QIBR/OEM/Neutral

Package

QIBR/Standard Industrial Package/OEM

Applications

Crushers, screens, conveyor, rolling mills, continuous casting machines, Wind Turbines, cranes, forklifts, excavators, bulldozers, concrete mixers

Standard double row Spherical roller bearing

Filters

NO. Product Product Number Basic dynamic load rating Basic static load rating Inner diameter (d) Outer diameter (D) Overall width (B) Weight
701 239/500 239/500 CA/W33 2967 KN 6000 KN 500 mm 670 mm 128 mm 130 kg
702 239/500 239/500 CAK/W33 2967 KN 6000 KN 500 mm 670 mm 128 mm 130 kg
703 230/500 230/500 CA/W33 4358 KN 7800 KN 500 mm 720 mm 167 mm 225 kg
704 230/500 230/500 CAK/W3 4358 KN 7800 KN 500 mm 720 mm 167 mm 225 kg
705 240/500 240/500 ECA/W33 5777 KN 11000 KN 500 mm 720 mm 218 mm 295 kg
706 240/500 240/500 ECAK30/W33 5777 KN 11000 KN 500 mm 720 mm 218 mm 295 kg
707 231/500 231/500 CA/W33 8037 KN 12900 KN 500 mm 830 mm 264 mm 580 kg
708 231/500 231/500 CAK/W33 8037 KN 12900 KN 500 mm 830 mm 264 mm 580 kg
709 241/500 241/500 ECA/W33 10123 KN 17000 KN 500 mm 830 mm 325 mm 700 kg
710 241/500 241/500 ECAK30/W33 10123 KN 17000 KN 500 mm 830 mm 325 mm 700 kg
711 232/500 232/500 CA/W33 11183 KN 17300 KN 500 mm 920 mm 336 mm 985 kg
712 232/500 232/500 CAK/W33 11183 KN 17300 KN 500 mm 920 mm 336 mm 985 kg
713 248/530 248/530 CAMA/W20 2124 KN 5300 KN 530 mm 650 mm 118 mm 86 kg
714 248/530 248/530 CAK30MA/W20 2124 KN 5300 KN 530 mm 650 mm 118 mm 86 kg
715 239/530 239/530 CA/W33 3308 KN 6700 KN 530 mm 710 mm 136 mm 155 kg
716 239/530 239/530 CAK/W33 3308 KN 6700 KN 530 mm 710 mm 136 mm 155 kg
717 230/530 230/530 CA/W33 5267 KN 9300 KN 530 mm 780 mm 185 mm 310 kg
718 230/530 230/530 CAK/W33 5267 KN 9300 KN 530 mm 780 mm 185 mm 310 kg
719 240/530 240/530 ECA/W33 6973 KN 13200 KN 530 mm 780 mm 250 mm 410 kg
720 240/530 240/530 ECAK30/W33 6973 KN 13200 KN 530 mm 780 mm 250 mm 410 kg
721 231/530 231/530 CA/W33 8526 KN 14000 KN 530 mm 870 mm 272 mm 645 kg
722 231/530 231/530 CAK/W33 8526 KN 14000 KN 530 mm 870 mm 272 mm 645 kg
723 241/530 241/530 ECA/W33 10909 KN 19000 KN 530 mm 870 mm 335 mm 830 kg
724 241/530 241/530 ECAK30/W33 10909 KN 19000 KN 530 mm 870 mm 335 mm 830 kg
725 232/530 232/530 CA/W33 13268 KN 20400 KN 530 mm 980 mm 355 mm 1200 kg
726 232/530 232/530 CAK/W33 13268 KN 20400 KN 530 mm 980 mm 355 mm 1200 kg
727 239/560 239/560 CA/W33 3571 KN 7200 KN 560 mm 750 mm 140 mm 175 kg
728 239/560 239/560 CAK/W33 3571 KN 7200 KN 560 mm 750 mm 140 mm 175 kg
729 230/560 230/560 CA/W33 5779 KN 10200 KN 560 mm 820 mm 195 mm 355 kg
730 230/560 230/560 CAK/W33 5779 KN 10200 KN 560 mm 820 mm 195 mm 355 kg
731 240/560 240/560 ECA/W33 7621 KN 14600 KN 560 mm 820 mm 258 mm 465 kg
732 240/560 240/560 ECAK30/W33 7621 KN 14600 KN 560 mm 820 mm 258 mm 465 kg
733 231/560 231/560 CA/W33 9596 KN 16000 KN 560 mm 920 mm 280 mm 740 kg
734 231/560 231/560 CAK/W33 9596 KN 16000 KN 560 mm 920 mm 280 mm 740 kg
735 241/560 241/560 ECJ/W33 12366 KN 21600 KN 560 mm 920 mm 355 mm 985 kg
736 241/560 241/560 ECK30J/W33 12366 KN 21600 KN 560 mm 920 mm 355 mm 985 kg
737 232/560 232/560 CA/W33 13940 KN 22000 KN 560 mm 1030 mm 365 mm 1350 kg
738 232/560 232/560 CAK/W33 13940 KN 22000 KN 560 mm 1030 mm 365 mm 1350 kg
739 239/600 239/600 CA/W33 4022 KN 8300 KN 600 mm 800 mm 150 mm 220 kg
740 239/600 239/600 CAK/W33 4022 KN 8300 KN 600 mm 800 mm 150 mm 220 kg
741 230/600 230/600 CA/W33 6252 KN 11400 KN 600 mm 870 mm 200 mm 405 kg
742 230/600 230/600 CAK/W33 6252 KN 11400 KN 600 mm 870 mm 200 mm 405 kg
743 240/600 240/600 ECA/W33 8580 KN 17000 KN 600 mm 870 mm 272 mm 520 kg
744 240/600 240/600 ECAK30/W33 8580 KN 17000 KN 600 mm 870 mm 272 mm 520 kg
745 231/600 231/600 CA/W33 10738 KN 18000 KN 600 mm 980 mm 300 mm 895 kg
746 231/600 231/600 CAK/W33 10738 KN 18000 KN 600 mm 980 mm 300 mm 895 kg
747 241/600 241/600 ECA/W33 13522 KN 23600 KN 600 mm 980 mm 375 mm 1200 kg
748 241/600 241/600 ECAK30/W33 13522 KN 23600 KN 600 mm 980 mm 375 mm 1200 kg
749 232/600 232/600 CA/W33 15652 KN 25500 KN 600 mm 1090 mm 388 mm 1600 kg
750 232/600 232/600 CAK/W33 15652 KN 25500 KN 600 mm 1090 mm 388 mm 1600 kg
751 238/630 238/630 CAMA/W20 2545 KN 6100 KN 630 mm 780 mm 112 mm 120 kg
752 239/630 239/630 CA/W33 4744 KN 9800 KN 630 mm 850 mm 165 mm 280 kg
753 239/630 239/630 CAK/W33 4744 KN 9800 KN 630 mm 850 mm 165 mm 280 kg
754 230/630 230/630 CA/W33 6898 KN 12500 KN 630 mm 920 mm 212 mm 485 kg
755 230/630 230/630 CAK/W33 6898 KN 12500 KN 630 mm 920 mm 212 mm 485 kg
756 240/630 240/630 ECJ/W33 9150 KN 18000 KN 630 mm 920 mm 290 mm 645 kg
757 240/630 240/630 ECK30J/W33 9150 KN 18000 KN 630 mm 920 mm 290 mm 645 kg
758 231/630 231/630 CA/W33 12600 KN 20800 KN 630 mm 1030 mm 315 mm 1050 kg
759 231/630 231/630 CAK/W33 12600 KN 20800 KN 630 mm 1030 mm 315 mm 1050 kg
760 241/630 241/630 ECA/W33 15001 KN 27000 KN 630 mm 1030 mm 400 mm 1400 kg
761 241/630 241/630 ECAK30/W33 15001 KN 27000 KN 630 mm 1030 mm 400 mm 1400 kg
762 238/670 238/670 CAMA/W20 2643 KN 6400 KN 670 mm 820 mm 112 mm 130 kg
763 248/670 248/670 CAMA/W20 3598 KN 9500 KN 670 mm 820 mm 150 mm 172 kg
764 239/670 239/670 CA/W33 5146 KN 10800 KN 670 mm 900 mm 170 mm 315 kg
765 239/670 239/670 CAK/W33 5146 KN 10800 KN 670 mm 900 mm 170 mm 315 kg
766 230/670 230/670 CA/W33 7919 KN 14600 KN 670 mm 980 mm 230 mm 600 kg
767 230/670 230/670 CAK/W33 7919 KN 14600 KN 670 mm 980 mm 230 mm 600 kg
768 240/670 240/670 ECA/W33 10435 KN 20400 KN 670 mm 980 mm 308 mm 790 kg
769 240/670 240/670 ECAK30/W33 10435 KN 20400 KN 670 mm 980 mm 308 mm 790 kg
770 231/670 231/670 CA/W33 13101 KN 22400 KN 670 mm 1090 mm 336 mm 1250 kg
771 231/670 231/670 CAK/W33 13101 KN 22400 KN 670 mm 1090 mm 336 mm 1250 kg
772 241/670 241/670 ECA/W33 16381 KN 29000 KN 670 mm 1090 mm 412 mm 1600 kg
773 241/670 241/670 ECAK30/W33 16381 KN 29000 KN 670 mm 1090 mm 412 mm 1600 kg
774 232/670 232/670 CA/W33 18650 KN 30500 KN 670 mm 1220 mm 438 mm 2270 kg
775 232/670 232/670 CAK/W33 18650 KN 30500 KN 670 mm 1220 mm 438 mm 2270 kg
776 238/710 238/710 CAMA/W20 3013 KN 7500 KN 710 mm 870 mm 118 mm 153 kg
777 239/710 239/710 CA/W33 5702 KN 12000 KN 710 mm 950 mm 180 mm 365 kg
778 239/710 239/710 CAK/W33 5702 KN 12000 KN 710 mm 950 mm 180 mm 365 kg
779 249/710 249/710 CA/W33 6860 KN 15600 KN 710 mm 950 mm 243 mm 495 kg
780 249/710 249/710 CAK30/W33 6860 KN 15600 KN 710 mm 950 mm 243 mm 495 kg
781 230/710 230/710 CA/W33 8669 KN 16300 KN 710 mm 1030 mm 236 mm 670 kg
782 230/710 230/710 CAK/W33 8669 KN 16300 KN 710 mm 1030 mm 236 mm 670 kg
783 240/710 240/710 ECA/W33 11164 KN 22800 KN 710 mm 1030 mm 315 mm 895 kg
784 240/710 240/710 ECAK30/W33 11164 KN 22800 KN 710 mm 1030 mm 315 mm 895 kg
785 231/710 231/710 CA/W33 14732 KN 26000 KN 710 mm 1150 mm 345 mm 1450 kg
786 231/710 231/710 CAK/W33 14732 KN 26000 KN 710 mm 1150 mm 345 mm 1450 kg
787 241/710 241/710 ECA/W33 17935 KN 32500 KN 710 mm 1150 mm 438 mm 1900 kg
788 241/710 241/710 ECAK30/W33 17935 KN 32500 KN 710 mm 1150 mm 438 mm 1900 kg
789 232/710 232/710 CA/W33 21208 KN 34500 KN 710 mm 1280 mm 450 mm 2610 kg
790 232/710 232/710 CAK/W33 21208 KN 34500 KN 710 mm 1280 mm 450 mm 2610 kg
791 238/750 238/750 CAMA/W20 3405 KN 8500 KN 750 mm 920 mm 128 mm 185 kg
792 239/750 239/750 CA/W33 6138 KN 13200 KN 750 mm 1000 mm 185 mm 420 kg
793 239/750 239/750 CAK/W33 6138 KN 13200 KN 750 mm 1000 mm 185 mm 420 kg
794 249/750 249/750 CA/W33 7699 KN 18000 KN 750 mm 1000 mm 250 mm 560 kg
795 249/750 249/750 CAK30/W33 7699 KN 18000 KN 750 mm 1000 mm 250 mm 560 kg
796 230/750 230/750 CA/W33 10061 KN 18600 KN 750 mm 1090 mm 250 mm 795 kg
797 230/750 230/750 CAK/W33 10061 KN 18600 KN 750 mm 1090 mm 250 mm 795 kg
798 240/750 240/750 ECA/W33 12235 KN 25000 KN 750 mm 1090 mm 335 mm 1070 kg
799 240/750 240/750 ECAK30/W33 12235 KN 25000 KN 750 mm 1090 mm 335 mm 1070 kg
800 231/750 231/750 CA/W33 16518 KN 29000 KN 750 mm 1220 mm 365 mm 1700 kg

 Features and advantages of QIBR double-row standard spherical roller bearings

QIBR double-row standard spherical roller bearings solve multiple key problems in various fields, which are mainly reflected in the following aspects:

1. Self-aligning ability

The raceways of the inner and outer rings of the double-row spherical roller bearings are curved, and the bearings have the function of self-aligning, that is, they can automatically compensate for the angular deviation caused by the bending of the shaft or the installation error. Therefore, it can bear a certain axial load while bearing radial loads, and is particularly suitable for applications with low installation accuracy requirements.

2. Strong load-bearing capacity

The rollers of spherical roller bearings are cylindrical or slightly inclined, with a large contact surface, and can withstand large radial loads and bidirectional axial loads. Due to the large number of rollers, it has a higher load-bearing capacity, especially in high-load and high-impact application scenarios.

3. Suitable for harsh working conditions

This type of bearing is often used in harsh environments such as high temperature, high speed, and heavy load, and can operate reliably under harsh working conditions. Spherical roller bearings have strong adaptability and can adapt to large axial offsets and radial load changes.

4. Easy installation

Compared with other types of roller bearings, double-row spherical roller bearings can simplify installation requirements and reduce the risk of bearing failure due to installation errors due to their self-aligning function.


The performance improvement and solutions of QIBR double-row standard spherical roller bearing

1. Lubricant optimization

Select appropriate lubricating oil or grease, and make appropriate additions and blends to reduce friction and improve wear resistance. Using synthetic lubricants or nano-lubricants can significantly improve the efficiency and life of bearings.

2. Heat treatment process

Optimize the heat treatment process to ensure that the hardness and toughness of the bearing material are in the best state, and enhance its fatigue resistance and wear resistance.

3. Improve the quality of rolling elements

Reduce friction and wear by improving the surface finish and hardness of the rolling elements. Using high-precision rolling elements (such as ceramics) can significantly improve the operating performance of the bearing.

4. Cage design optimization

Use a more optimized cage structure, such as using high-temperature and corrosion-resistant materials and designs to improve the durability of the cage and the stability of the bearing.


Main application areas of QIBR double-row standard spherical roller bearings

1.Mining machinery

Such as crushers, conveyors, ball mills and other equipment, due to their harsh working environment and heavy loads, double-row spherical roller bearings can provide high load bearing capacity and avoid failures caused by installation errors.

2.Metallurgical equipment

Such as rolling mill equipment and roller tables in steel plants, double-row spherical roller bearings can effectively withstand heavy loads and impacts generated in metallurgical production.

3.Hydropower generator sets

Bearings of large power equipment such as turbines and generators. Since power equipment needs to bear a large amount of load and long-term operation, double-row spherical roller bearings have good self-alignment and are suitable for this type of equipment.

4.Shipbuilding industry

Double-row spherical roller bearings are often used in key parts of ships due to their excellent load-bearing capacity and durability in the rudder shaft, transmission shaft and other parts of ships.