4 mm bore 617/4 674 ZZ Minature Deep Groove Ball Bearings 4mm X 7mm X 2.5mm Thin Section Robot Bearings Single Row Shielded Rolling Bearings
The 674ZZ miniature deep groove ball bearing, with dimensions of 4mm inner diameter × 7mm outer diameter × 2.5mm width, is renowned for its compact size, high-speed capability, and low noise characteristics.
Bearing Number |
Boundary Dimensions(mm) |
Basic Load Rating(N) |
Limiting Speed(rpm) |
Reference(kg)
Weight |
| Inner Diameter |
Outer Diameter |
Width |
Chamfer |
Dynamic |
Static |
Grease |
Oil |
| d |
D |
B |
B1 |
r(min) |
Cr |
Cor |
Non-contact |
Wt ≈ |
| 617/3 |
ZZ |
|
3 |
6 |
2 |
2.5 |
0.1 |
242 |
94 |
60000 |
71000 |
0.00020 |
| 617/4 |
ZZ |
|
4 |
7 |
2 |
2.5 |
0.1 |
222 |
88 |
54000 |
63000 |
0.00028 |
| 617/5 |
ZZ |
|
5 |
8 |
2 |
2.5 |
0.1 |
217 |
91 |
49000 |
57000 |
0.00032 |
| 617/6 |
ZZ |
|
6 |
10 |
2.5 |
3 |
0.1 |
465 |
196 |
43000 |
51000 |
0.00065 |
| 617/7 |
ZZ |
|
7 |
11 |
2.5 |
3 |
0.1 |
555 |
269 |
40000 |
47000 |
0.00067 |
| 617/8 |
ZZ |
|
8 |
12 |
2.5 |
3.5 |
0.1 |
515 |
252 |
38000 |
45000 |
0.00075 |
| 617/9 |
ZZ |
|
9 |
14 |
3 |
4.5 |
0.1 |
920 |
465 |
36000 |
42000 |
0.00140 |
674 ZZ Ball Bearings 4X7X2.5mm Specifications & Dimensions
| Universal |
674 ZZ |
| Type |
Deep Groove Ball |
| Inner/Outer Ring/ Ball Material |
Chrome Steel |
| Cage Material |
Steel/Nylon |
| CageType |
Punching |
| Precision |
P0,P6 |
| Inner Dimension d(Ø)(mm) |
4 |
| Outer Dimension D(Ø)(mm) |
7 |
| Width B (or T)(mm) |
2.5 |
| Lubrication |
Grease |
| Load Direction |
Radial |
| Specifications/Environment |
Standard |
| Number of Raceway Ring Rows |
Single Track |
| Size Standards |
Metric Series |
The 674ZZ miniature deep groove ball bearing is widely used across various specialized fields due to its compact size and high precision. Application areas include:
1. Consumer Electronics and Office Equipment:
Printers/Fax Machines: Acts as a precision transmission component, supporting high-speed and low-noise operation.
Micro Motors: Including motors in drones and hard drives, utilizing its high-speed rotation and low friction characteristics.
2. Precision Instruments and Industrial Equipment:
Testing Equipment: Such as centrifuges and optical instruments, relying on its high precision and stability.
Automation Equipment: Applied in robotic joints and precision transmission systems of 3D printers.
3. Automotive and Transportation:
Automotive Motors: Like fan motors and turbochargers, meeting requirements for heat resistance and long service life.
Reduction Gears: Achieving efficient power transmission in vehicle-mounted devices.
4. Medical Devices:
Dental Drills/Medical Instruments: Stainless steel versions are used in corrosion-resistant applications.
Laboratory Equipment: Critical rotating components in vacuum pumps and mixed bed equipment.
5. Models and Special Applications:
Model Aircraft/RC Toys: Ultra-thin design suitable for use in quadcopters, airplane models, etc.
Fishing Gear/Sports Equipment: Such as fishing reels, requiring corrosion resistance and lightweight design.
This bearing type offers versatile solutions across a broad range of demanding applications, ensuring reliability, precision, and efficiency in everything from consumer electronics to specialized medical and model equipment.
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4 mm bore 617/4 674 ZZ Minature Deep Groove Ball Bearings 4* 7* 2.5mm Single Row Shielded Rolling Bearings Images
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