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NOTE：
Please refer to the picture and select right type of bearings before your order (Sealed or Shield on BOTH or SINGLE side of the bearing). Suffix on the bearing just for differentiating between Sealed and Shield type of bearing. It would not affect the use of our product.
Description:
- Single-row, pre-lubricated, normal accuracy.
- Deep Groove Ball Bearings are one of the most widely used rolling bearings. They are used to accommodate radial and axial loads in both directions.
- With small friction and high-limit speed, Ball Bearings are cost-effective and require little maintenance.
- Carbon Steel bearings are better in toughness than chrome steel bearings after quenching. These cost-effective bearings are widely used in areas with low requirements for Mohs hardness.
- Suitable for all kinds of industrial equipment, micro motor, small rotary motor, office equipment and so on.
Selecting Guide:
Shields (Designation Suffix Z/ZZ) - High speed. Protect from dirt and debris.
Sealed (Designation Suffix RS/2RS) - Made of sheet steel reinforced nitrile butadiene rubber (oil- and liquid-resistant). Lower limit speed than Shield Bearings.
Specification:
Model: 688ZZ
Seal Type: Double Shielded
Inner Race/Outer Race Material: Carbon Steel
Cage Material: Stamping Steel
Inner Diameter (d): 8mm
Outer Diameter (D): 16mm
Thickness (B): 5mm
Dynamic Load Rating (Cr): 1064N
Static Load Rating (Cor): 474N
Accuracy Class: P0 (ABEC-1)
Noise Level: Z2
Number of Pack: 5 Pcs
Sam
Reviewed in the United States on April 28, 2025
Terrible bearings. Does NOT fit. Outer diameter is 0.5mm off in size. Which matters when dealing with EXACT measurements. Don't waste your time and money.
Don Williams
Reviewed in the United States on August 8, 2024
Exactly what I needed to get my 3D printer up and running.
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