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Model: Miniature Ball Bearings
Brand: MBY
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Miniature Ball Bearings

Product Description

MBY precision deep groove ball bearings are designed for high precision, low noise, small vibration, high reliability and long life. They are mainly used in various types of electric motors. They are also known as EMQ (Electric Motor Quality) bearings.

EMQ bearings are widely used in household appliances, toys, electric power tools, car motors and other fields. With optimal design, high reliability heat treatment, precision manufacturing processes and high-grade grease, these products perform better on reliability, vibration and noise levels than standard products making them more suitable for electric motor applications. These products can also be applied to most gearbox applications as well.

MBY precision deep groove ball bearings include a variety of shields and seals to meet the many different requirements customers demand. For detailed specification, please feel free to contact MBY.

MBY precision deep groove ball bearings are good quality products with excellent performance. Because of their high precision, high rotating speed, high reliability, low friction and low noise, they are widely used in areas of machine tools, measuring instruments, office machinery, household appliances, various types of electric motors, industrial automation control, etc.

At the same time, MBY can design and manufacture precision deep groove ball bearings according to your requirements with special functions such as mute, special sealing, electric insulation, ultra-high speed, high/low temperature resistance and etc. And MBY will sincerely provide superior application service and professional technical advice to customers.

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Bearing Designation Boundary Dimensions Basic Load Rating Limiting Speed Shoulder Dimensions Mass
(mm) (kN) (rpm) (mm) (g)


Grease Oil

Open type With steel shields Without With contacting d D B B1 r r1 Cr Cor Open Type (2RS) Open Type da Da ra rb Approx
contacting rubber seals (min.) (min.) (ZZ,2RU) (Z) (min.) (max.) (max.) (max.)
rubber seals








604 604 ZZ 604 2RU 604 2RS 4 12 4 4 0.2 0.2 0.97 0.36 53000 0 63000 5.6 10.4 0.2 0.2 2.1
605 605 ZZ 605 2RU 605 2RS 5 14 5 5 0.2 0.2 1.3 0.49 50000 0 60000 6.6 12.4 0.2 0.2 3.5
606 606 ZZ 606 2RU 606 2RS 6 17 6 6 0.3 0.3 1.95 0.74 43000 0 51000 8 15 0.3 0.3 5.8
607 607 ZZ 607 2RU 607 2RS 7 19 6 6 0.3 0.3 2.6 1.05 40000 27000 47000 9 17 0.3 0.3 7.6
608 608 ZZ 608 2RU 608 2RS 8 22 7 7 0.3 0.3 3.3 1.35 34000 23000 41000 10 20 0.3 0.3 12
609 609 ZZ 609 2RU 609 2RS 9 24 7 7 0.3 0.3 3.35 1.4 33000 22000 40000 11 22 0.3 0.3 15
623 623 ZZ 623 2RU 623 2RS 3 10 4 4 0.15 0.15 0.64 0.23 52000 44000 63000 4.2 8.8 0.15 0.15 1.6
624 624 ZZ 624 2RU 624 2RS 4 13 5 5 0.2 0.2 1.3 0.49 44000 39000 54000 5.6 11.4 0.2 0.2 2.9
625 625 ZZ 625 2RU 625 2RS 5 16 5 5 0.3 0.3 1.75 0.67 40000 33000 49000 7 14 0.3 0.3 5
626 626 ZZ 626 2RU 626 2RS 6 19 6 6 0.3 0.3 2.6 1.05 35000 27000 43000 8 17 0.3 0.3 8.1
627 627 ZZ 627 2RU 627 2RS 7 22 7 7 0.3 0.3 3.3 1.35 31000 23000 37000 9 20 0.3 0.3 13
628 628 ZZ 628 2RU 628 2RS 8 24 8 8 0.3 0.3 3.35 1.4 28000 22000 35000 10 22 0.3 0.3 18
629 629 ZZ 629 2RU 629 2RS 9 26 8 8 0.6 0.6 4.55 2 27000 19000 33000 13 22 0.3 0.3 20
633 633 ZZ 633 2RU 633 2RS 3 13 5 5 0.2 0.2 1.3 0.49 44000 0 54000 4.6 11.4 0.2 0.2 3
634 634 ZZ 634 2RU 634 2RS 4 16 5 5 0.3 0.3 1.75 0.67 40000 0 49000 6 14 0.3 0.3 5.3
635 635 ZZ 635 2RU 635 2RS 5 19 6 6 0.3 0.3 2.6 1.05 35000 27000 43000 7 17 0.3 0.3 8.5
636 636 ZZ 636 2RU 636 2RS 6 22 7 7 0.3 0.3 3.3 1.35 31000 23000 37000 8 20 0.3 0.3 13
637 637 ZZ 637 2RU 637 2RS 7 26 9 9 0.3 0.3 4.55 1.95 26000 0 32000 9 24 0.3 0.3 24
638 638 ZZ 638 2RU 638 2RS 8 28 9 9 0.3 0.3 4.55 1.95 26000 0 32000 10 26 0.3 0.3 29
639 639 ZZ 639 2RU 639 2RS 9 30 10 10 0.6 0.6 6 2.65 24000 0 29000 13 26 0.6 0.6 35
694 694 ZZ 694 2RU 694 2RS 4 11 4 4 0.15 0.15 0.96 0.35 54000 44000 65000 5.2 9.8 0.15 0.15 1.8
695 695 ZZ 695 2RU 695 2RS 5 13 4 4 0.2 0.2 1.3 0.49 50000 42000 60000 6.6 11.4 0.2 0.2 2.2
696 696 ZZ 696 2RU 696 2RS 6 15 5 5 0.2 0.2 1.75 0.67 45000 32000 54000 7.6 13.4 0.2 0.2 3.9
697 697 ZZ 697 2RU 697 2RS 7 17 5 5 0.3 0.3 1.6 0.71 42000 28000 50000 9 15 0.3 0.3 5.3
698 698 ZZ 698 2RU 698 2RS 8 19 6 6 0.3 0.3 2.25 0.91 39000 27000 46000 10 17 0.3 0.3 7.2
699 699 ZZ 699 2RU 699 2RS 9 20 6 6 0.3 0.3 2.45 1.05 35000 25000 42000 11 18 0.3 0.3 7.5
602 602 ZZ 602 2RU 602 2RS 2 7 2.8 3.5 0.15 0.15 0.39 0.13 76000 0 79000 3.2 5.8 0.15 0.15 0.5
603 603 ZZ 603 2RU 603 2RS 3 9 3 5 0.15 0.15 0.43 0.16 60000 0 72000 4.2 7.8 0.15 0.15 0.9
68/2.5 68/2.5 ZZ 68/2.5 2RU 68/2.5 2RS 2.5 6 1.8 2.6 0.1 0.1 0.19 0.06 75000 0 89000 3.3 5.2 0.1 0.1 0.2
682 682 ZZ 682 2RU 682 2RS 2 5 1.5 2.3 0.1 0.1 0.19 0.06 98000 0 110000 2.8 4.4 0.1 0.1 0.1
683 683 ZZ 683 2RU 683 2RS 3 7 2 3 0.15 0.15 0.31 0.11 66000 0 79000 4.2 5.8 0.1 0.1 0.3
684 684 ZZ 684 2RU 684 2RS 4 9 2.5 4 0.15 0.15 0.64 0.23 59000 0 70000 5.2 7.8 0.1 0.1 0.6
685 685 ZZ 685 2RU 685 2RS 5 11 3 5 0.15 0.15 0.97 0.36 53000 0 63000 6.2 9.8 0.15 0.15 0.1
686 686 ZZ 686 2RU 686 2RS 6 13 3.5 5 0.15 0.15 1.1 0.44 48000 36000 57000 7.2 11.8 0.15 0.15 1.8
687 687 ZZ 687 2RU 687 2RS 7 14 3.5 5 0.15 0.15 1.15 0.51 45000 0 54000 8.2 12.8 0.15 0.15 2
688 688 ZZ 688 2RU 688 2RS 8 16 4 5 0.2 0.2 1.6 0.71 42000 28000 50000 9.6 14.4 0.2 0.2 3.2
689 689 ZZ 689 2RU 689 2RS 9 17 4 5 0.2 0.2 1.35 0.66 39000 0 46000 10.6 15.4 0.2 0.2 3.5
69/2.5 69/2.5 ZZ 69/2.5 2RU 69/2.5 2RS 2.5 7 2.5 3.5 0.15 0.15 0.31 0.11 66000 0 79000 3.7 5.8 0.15 0.15 0.4
692 692 ZZ 692 2RU 692 2RS 2 6 2.3 3 0.15 0.1 0.33 0.1 86000 0 100000 3.2 4.8 0.15 0.1 0.2
693 693 ZZ 693 2RU 693 2RS 3 8 3 4 0.15 0.15 0.55 0.17 64000 0 76000 4.2 6.8 0.15 0.15 0.6