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7mm miniature deep groove ball bearings
, miniature deep groove ball bearings 677
7mm Bore 677 617/7 ZZ Miniature Deep Groove Ball Bearings 7X11X3mm High Performance
617/7 677 ZZ Minature Deep Groove Ball Bearings 7mm X 11mm X 3mm Thin Section Robot Bearings
The 677 ZZ miniature deep groove ball bearing, with dimensions of 7mm inner diameter × 11mm outer diameter × 3mm 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 |
677 ZZ Ball Bearings 7X11X3mm Specifications & Dimensions
| Universal |
677 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) |
7 |
| Outer Dimension D(Ø)(mm) |
11 |
| Width B (or T)(mm) |
3 |
| Lubrication |
Grease |
| Load Direction |
Radial |
| Specifications/Environment |
Standard |
| Number of Raceway Ring Rows |
Single Track |
| Size Standards |
Metric Series |
The 677 ZZ miniature deep groove ball bearing is widely used across various specialized fields due to its compact size and high precision. Application areas include:
1. Precision Miniature Equipment
Models and Toys: Suitable for remote control cars, model airplanes, mini robots, and other scenarios requiring lightweight, low friction, and high precision.
Miniature Motors: Used in drone motors, small fans, electric toothbrushes, and other small motor transmission systems, supporting high-speed operation.
2. Medical and Instrumentation
Medical Devices: Such as the rotating components of electrocardiographs, electromyographs, and other precision instruments, relying on their low noise and stable performance.
Laboratory Equipment: Centrifuges, mixers, and other applications requiring dust protection.
3. Industrial Automation
Small Mechanical Transmissions: Such as sensor drive shafts on automated production lines, paper feed mechanisms in printers/copiers.
This summary highlights the versatility and suitability of the 617/7 ZZ bearing across various fields, from ensuring precision in miniature devices and medical equipment to providing reliable performance in industrial automation settings. Its compact size, combined with dust protection and high-speed capabilities, makes it an essential component in numerous applications.
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