Deep Groove Ball Bearing
Low noise high precision P6 grade miniature bearing 684ZZ 684RS 684 size 4x9x4mm
Model number: Deep groove ball bearing 684ZZ 684RS 684
Size: 4X9x4 mm
Materials: Chrome Steel
Weight: 0.003KG
Specification
684ZZ and 684RS miniature deep groove ball bearings feature an inner diameter of 4mm, outer diameter of 9mm, and width of 4mm. The 684ZZ model incorporates metal dust shields on both sides, while the 684RS features rubber seals on both sides. Both are constructed from chrome steel, offering high precision and low friction characteristics. They are suitable for precision instruments, micro motors, and similar equipment.
Technical parameter:
| Model Number | Deep groove ball bearing 684ZZ 684RS 684 |
| Size | 4X9x4 mm |
| Weight | 0.003KG |
| Material | Chrome Steel |
| Clearance | C2 C0 C3 C4 |
| Precision Grade | P6 |
| Payment terms | 100% T/T or 30% T/T in advance, 70% before delivery |
| Package | Industrial package or according to buyers' requirement |
| MOQ | 100pcs |
| Shield Type | Open, Z, ZZ, RZ,2RZ,RS, 2RS |
| Lubrication | Pre-lubricated with High-Performance Grease |
| Temperature Range | -20°C to +120°C |
| Lead Time | 3-5 Days |
Details：Deep groove ball bearings are simple, easy to use, is the largest production volume, most widely used of a class of bearings. It is mainly used for a bear radial load, but also bear certain axial load. When the bearing radial clearance increased when the function with angular contact bearings can bear large axial load.
Special properties:1. High accuracy
2. Low noise
3. Long life
4. Can be customized according to your needs
5. Can provide small & miniature standard and non-standard ball bearings.
Related Products
| Bearings No. | ID(d*D*B)mm | Weight (KG) | Bearings No. | ID(d*D*B)mm | Weight (KG) |
| 681xzz | 1.5*4*2 | 0.0001 | 6811ZZ | 55*72*9 | 0.081 |
| 681 | 1*3*1 | 0.0001 | 6812ZZ | 60*78*10 | 0.106 |
| 681X | 1.5*4*1.2 | 0.0001 | 6813ZZ | 65*85*10 | 0.13 |
| 682ZZ | 2*5*2.3 | 0.0002 | 6814ZZ | 70*90*10 | 0.14 |
| 682XZZ | 2.5*6*2.6 | 0.0003 | 6815ZZ | 75*95*10 | 0.145 |
| 683 | 3*7*2 | 0.0005 | 6816ZZ | 80*100*10 | 0.154 |
| 684ZZ | 4*9*4 | 0.0015 | 6817ZZ | 85*110*13 | 0.27 |
| 685ZZ | 5*11*5 | 0.002 | 6818ZZ | 90*115*13 | 0.285 |
| 686ZZ | 6*13*3.5 | 0.002 | 6819ZZ | 95*120*13 | 0.3 |
| 687 | 7*14*3.5 | 0.003 | 6820ZZ | 100*125*13 | 0.313 |
| 688ZZ | 8*16*5 | 0.003 | 6821ZZ | 105*130*13 | 0.325 |
| 689ZZ | 9*17*5 | 0.003 | 6822ZZ | 110*140*16 | 0.515 |
| 6800ZZ | 10*19*5 | 0.005 | 6824ZZ | 120*150*16 | 0.56 |
| 6801ZZ | 12*21*5 | 0.006 | 6826ZZ | 110*140*16 | 0.8 |
| 6802ZZ | 15*24*5 | 0.007 | 6828ZZ | 140*175*18 | 0.85 |
| 6803ZZ | 17*26*5 | 0.008 | 6830 | 150*190*20 | 1.16 |
| 6804ZZ | 20*32*7 | 0.019 | 6832 | 160*200*20 | 1.23 |
| 6805ZZ | 25*37*7 | 0.022 | 6834 | 170*215*22 | 1.63 |
| 6806ZZ | 30*42*7 | 0.026 | 6836 | 180*225*22 | 2.03 |
| 6807ZZ | 35*47*7 | 0.029 | 6838 | 190*240*24 | 2.62 |
| 6808ZZ | 40*52*7 | 0.033 | 6840 | 200*250*24 | 2.73 |
| 6809ZZ | 45*58*7 | 0.04 | 6844 | 220*270*24 | 3 |
| 6810ZZ | 50*65*7 | 0.052 | 6848 | 240*300*28 | 4.6 |
Main application
Miniature bearings are suitable for various industrial equipment, small rotary motors, etc. in fields with high rotational speed and low noise, such as office equipment, miniature motors, instruments and meters, laser engraving, small clocks, soft drives, pressure rotors, dental drills, hard disk motors, stepper motors, video tape drums, toy models, computer cooling fans, money-counting machines, fax machines, and other related fields.
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