617/9 ZZ 679 ZZ Minature Deep Groove Ball Bearings 9mm X 14mm X
4.5mm Thin Section Robot Bearings Single Row ZZ Shielded Rolling
Radial Ball Bearing High Performance Bearing
The 679 ZZ miniature deep groove ball bearing, with dimensions of
9mm inner diameter × 14mm outer diameter × 4.5mm 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 |
679 ZZ Ball Bearings 9X14X4.5mm Specifications & Dimensions
| Universal | 679 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) | 9 |
| Outer Dimension D(Ø)(mm) | 14 |
| Width B (or T)(mm) | 4.5 |
| Lubrication | Grease |
| Load Direction | Radial |
| Specifications/Environment | Standard |
| Number of Raceway Ring Rows | Single Track |
| Size Standards | Metric Series |
The 679 ZZ miniature deep groove ball bearing is widely used across
various specialized fields due to its compact size and high
precision. Application areas include:
I. Industrial Equipment
Motors and Power Tools
Suitable for use in miniature motors and power tools (such as
drills, angle grinders), benefiting from its high-speed performance
(with speeds up to 36,000-42,000 rpm) and low friction
characteristics.
Automation Machinery
Utilized in light industrial automation equipment (like packaging
machines, textile machinery). Its high precision (P0 tolerance
grade) and low noise features enhance the stability of these
devices.
II. Consumer Electronics
Home Appliances
Commonly found in motor components of household appliances such as
fans, vacuum cleaners, and washing machines. The sealed structure
prevents dust intrusion, thereby extending the lifespan of the
bearing.
Sports Equipment
Applied in the wheel axles of sports gear like roller skates and
hoverboards. The thin-wall design (only 4.5mm thick) fits well into
compact spaces.
III. Precision Instruments
Medical Equipment
Used in dental instruments and laboratory equipment.
Office Equipment
Essential for the transmission components of printers and copiers,
relying on their low starting torque and sealed dust-proof
performance.
