617/3 673 Minature Deep Groove Ball Bearings 3mm X 6mm X 2 mm Thin
Section Robot Bearings Open Rolling Bearings
The 673 miniature deep groove ball bearing, with dimensions of 3mm
inner diameter × 6mm outer diameter × 2 mm 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 |
673 Ball Bearings 3X6X2mm Specifications & Dimensions
| Universal | 673 |
| 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) | 3 |
| Outer Dimension D(Ø)(mm) | 6 |
| Width B (or T)(mm) | 2 |
| Lubrication | oil |
| Load Direction | Radial |
| Specifications/Environment | Standard |
| Number of Raceway Ring Rows | Single Track |
| Size Standards | Metric Series |
The 673 miniature deep groove ball bearing, with dimensions of 3mm
inner diameter × 6mm outer diameter × 2mm width, is widely used
across various industrial sectors thanks to its compact size and
high precision. Below are its primary application areas and typical
equipment:
1. Light Industry and Precision Equipment:
Sewing Machinery: Used in the transmission systems of sewing
machines to support high-speed rotating components, such as needle
bar drives and spool mechanisms.
Medical Diagnostic Equipment: Applied in the precision rotating
parts of diagnostic devices, like slip rings in CT scanners and
focusing mechanisms in microscopes.
Office Automation Equipment: Supports motor shafts in small devices
like printers and smart locks; for instance, the MR63ZZ model is
used in smart locks.
2. Industrial Machinery:
Power Transmission Systems: Supports drive shafts in equipment like
bevel gear reducers and counterflow cooling tower fans.
Processing Equipment: Found in motion components of precision
machinery such as laser cutting machine guides, milling machine
spindles, and electronic component forming machines.
Material Handling Equipment: Utilized in rollers or conveyor belt
drive systems of powder handling equipment, non-woven fabric
printing machines, and band saws.
3.Automotive and Transportation:
Automotive Miniature Motors: Core support elements in automotive
components like radiator fans, windshield wiper motors, and
electric window regulators.
New Energy Equipment: Used in miniaturized rotating mechanisms of
emerging fields such as photovoltaic panel tracking systems and
sensors in electric vehicles.
4. Special Application Scenarios:
Extreme Environment Equipment: Employed in devices like
low-temperature freezers and high-temperature boiler fans, often
requiring special lubricants or seal designs.
Smart Devices: Applied in precision motion scenarios needing high
speed and low friction coefficients, such as robot joints and 3D
printer nozzles.
This bearing type provides reliable performance and precision
across a wide range of demanding applications, from intricate
medical devices to robust industrial machinery and innovative smart
technologies.
