Quality Creates Value

Miniature Ball Bearings

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WD 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.

Boundary Dimensions
(mm)
Basic Load Rating
(kN)
Limiting Speed
(rpm)
Bearing Designation Shoulder Dimensions
(mm)
Mass
(g)
Details
Grease Oil
d D B B1 r
(min.)
r1
(min.)
Cr Cor Open Type
(ZZ,2RU)
(2RS) Open Type
(Z)
Open type With steel shields Without
contacting
rubber seals
With contacting
rubber seals
da
(min.)
Da
(max.)
ra
(max.)
rb
(max.)
Approx
4 12 4 4 0.2 0.2 0.97 0.36 53000 0 63000 604 604 ZZ 0 0 5.6 10.4 0.2 0.2 2.1 Details
5 14 5 5 0.2 0.2 1.3 0.49 50000 0 60000 605 605 ZZ 0 0 6.6 12.4 0.2 0.2 3.5 Details
6 17 6 6 0.3 0.3 1.95 0.74 43000 0 51000 606 606 ZZ 606 2RU 0 8 15 0.3 0.3 5.8 Details
7 19 6 6 0.3 0.3 2.6 1.05 40000 27000 47000 607 607 ZZ 607 2RU 607 2RS 9 17 0.3 0.3 7.6 Details
8 22 7 7 0.3 0.3 3.3 1.35 34000 23000 41000 608 608 ZZ 608 2RU 608 2RS 10 20 0.3 0.3 12 Details
9 24 7 7 0.3 0.3 3.35 1.4 33000 22000 40000 609 609 ZZ 609 2RU 609 2RS 11 22 0.3 0.3 15 Details
3 10 4 4 0.15 0.15 0.64 0.23 52000 44000 63000 623 623 ZZ 0 623 2RS 4.2 8.8 0.15 0.15 1.6 Details
4 13 5 5 0.2 0.2 1.3 0.49 44000 39000 54000 624 624 ZZ 624 2RU 624 2RS 5.6 11.4 0.2 0.2 2.9 Details
5 16 5 5 0.3 0.3 1.75 0.67 40000 33000 49000 625 625 ZZ 625 2RU 625 2RS 7 14 0.3 0.3 5 Details
6 19 6 6 0.3 0.3 2.6 1.05 35000 27000 43000 626 626 ZZ 626 2RU 626 2RS 8 17 0.3 0.3 8.1 Details
7 22 7 7 0.3 0.3 3.3 1.35 31000 23000 37000 627 627 ZZ 627 2RU 627 2RS 9 20 0.3 0.3 13 Details
8 24 8 8 0.3 0.3 3.35 1.4 28000 22000 35000 628 628 ZZ 628 2RU 628 2RS 10 22 0.3 0.3 18 Details
9 26 8 8 0.6 0.6 4.55 2 27000 19000 33000 629 629 ZZ 629 2RU 629 2RS 13 22 0.3 0.3 20 Details
3 13 5 5 0.2 0.2 1.3 0.49 44000 0 54000 633 633 ZZ 0 0 4.6 11.4 0.2 0.2 3 Details
4 16 5 5 0.3 0.3 1.75 0.67 40000 0 49000 634 634ZZ 0 0 6 14 0.3 0.3 5.3 Details
5 19 6 6 0.3 0.3 2.6 1.05 35000 27000 43000 635 635 ZZ 635 2RU 635 2RS 7 17 0.3 0.3 8.5 Details
6 22 7 7 0.3 0.3 3.3 1.35 31000 23000 37000 636 636 ZZ 0 636 2RS 8 20 0.3 0.3 13 Details
7 26 9 9 0.3 0.3 4.55 1.95 26000 0 32000 637 637 ZZ 0 0- 9 24 0.3 0.3 24 Details
8 28 9 9 0.3 0.3 4.55 1.95 26000 0 32000 638 638 ZZ 0 0 10 26 0.3 0.3 29 Details
9 30 10 10 0.6 0.6 6 2.65 24000 0 29000 639 639 ZZ 0 0 13 26 0.6 0.6 35 Details
4 11 4 4 0.15 0.15 0.96 0.35 54000 44000 65000 694 694 ZZ 694 2RU 694 2RS 5.2 9.8 0.15 0.15 1.8 Details
5 13 4 4 0.2 0.2 1.3 0.49 50000 42000 60000 695 695 ZZ 695 2RU 695 2RS 6.6 11.4 0.2 0.2 2.2 Details
6 15 5 5 0.2 0.2 1.75 0.67 45000 32000 54000 696 696 ZZ 696 2RU 696 2RS 7.6 13.4 0.2 0.2 3.9 Details
7 17 5 5 0.3 0.3 1.6 0.71 42000 28000 50000 697 697 ZZ 697 2RU 697 2RS 9 15 0.3 0.3 5.3 Details
8 19 6 6 0.3 0.3 2.25 0.91 39000 27000 46000 698 698 ZZ 698 2RU 698 2RS 10 17 0.3 0.3 7.2 Details
9 20 6 6 0.3 0.3 2.45 1.05 35000 25000 42000 699 699 ZZ 699 2RU 699 2RS 11 18 0.3 0.3 7.5 Details
2 7 2.8 3.5 0.15 0.15 0.39 0.13 76000 0 79000 602 W602 ZZX 0 0 3.2 5.8 0.15 0.15 0.5 Details
3 9 3 5 0.15 0.15 0.43 0.16 60000 0 72000 603 W603 ZZX 0 0 4.2 7.8 0.15 0.15 0.9 Details
2.5 6 1.8 2.6 0.1 0.1 0.19 0.06 75000 0 89000 68/2.5 W68/2.5 ZZ 0 0 3.3 5.2 0.1 0.1 0.2 Details
2 5 1.5 2.3 0.1 0.1 0.19 0.06 98000 0 110000 682 W682 ZZX 0 0 2.8 4.4 0.1 0.1 0.1 Details
3 7 2 3 0.15 0.15 0.31 0.11 66000 0 79000 683 W683 ZZX 0 0 4.2 5.8 0.1 0.1 0.3 Details
4 9 2.5 4 0.15 0.15 0.64 0.23 59000 0 70000 684 W684 ZZ 0 0 5.2 7.8 0.1 0.1 0.6 Details
5 11 3 5 0.15 0.15 0.97 0.36 53000 0 63000 685 W685 ZZ 0 0 6.2 9.8 0.15 0.15 0.1 Details
6 13 3.5 5 0.15 0.15 1.1 0.44 48000 36000 57000 686 W686 ZZ 0 W686 2RS 7.2 11.8 0.15 0.15 1.8 Details
7 14 3.5 5 0.15 0.15 1.15 0.51 45000 0 54000 687 W687 ZZ 0 0 8.2 12.8 0.15 0.15 2 Details
8 16 4 5 0.2 0.2 1.6 0.71 42000 28000 50000 688 W688 ZZ W688 2RU W688 2RS 9.6 14.4 0.2 0.2 3.2 Details
9 17 4 5 0.2 0.2 1.35 0.66 39000 0 46000 689 W689 ZZ W689 2RU 0 10.6 15.4 0.2 0.2 3.5 Details
2.5 7 2.5 3.5 0.15 0.15 0.31 0.11 66000 0 79000 69/2.5 W69/2.5 ZZ 0 0 3.7 5.8 0.15 0.15 0.4 Details
2 6 2.3 3 0.15 0.1 0.33 0.1 86000 0 100000 692 W692 ZZX 0 0 3.2 4.8 0.15 0.1 0.2 Details
3 8 3 4 0.15 0.15 0.55 0.17 64000 0 76000 693 W693 ZZ 0 0 4.2 6.8 0.15 0.15 0.6 Details