A
Anonymous
Apr 17, 2026
Rating: 5/5
Fast shipping
Arrived well packaged. No damage to the boxes. Bearings spin freely without noise.
Description
NSK Japan Imported High-Speed Miniature Bearings 623 624 625 626 627 628 629 ZZ DDU
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand Name | NSK |
| Country of Origin | Japan |
| Bearing Material | Chrome Steel GCr15 |
| Seal Type Options | ZZ (Metal) or DDU (Rubber) |
| Precision Rating | ABEC-1 (ISO Normal) |
| Cage Type | Pressed Steel |
| Lubrication | Pre-filled with Grease |
| Inner Diameter Range | 3mm to 9mm |
| Outer Diameter Range | 10mm to 26mm |
| Width Range | 4mm to 8mm |
5 reviews
A
Anonymous
Mar 28, 2026
Rating: 5/5
Excellent quality
These bearings are incredibly smooth. Used them for a high-speed spindle project and they run cool.
A
Anonymous
Mar 14, 2026
Rating: 4/5
Solid choice
Using for RC car upgrades. Noticeable improvement in coasting distance. One seal was slightly bent.
A
Anonymous
Mar 10, 2026
Rating: 4/5
Good but tight fit
Quality is great but the 625 size was a very tight press fit on my shaft. Still works well.
A
Anonymous
Feb 04, 2026
Rating: 5/5
Authentic Product
Verified the markings on the bearing. Definitely genuine NSK quality as expected.
5 FAQ
Q: Is the inner diameter exact?
A: Yes, they adhere to ISO standards for dimensional accuracy.
Q: Are these suitable for electric motors?
A: Yes, they are designed for high-speed rotational applications like motors.
Q: What is the difference between ZZ and DDU?
A: ZZ has metal shields on both sides, DDU has rubber contact seals for better protection.
Q: Do I need to add oil before use?
A: No, they come pre-lubricated with high-quality grease from the factory.
Q: Can I return if I pick the wrong size?
A: Yes, provided the bearings are unused and in original packaging.
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