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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
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Description
6908dducm nsk6908DDU d 40 mm Bore diameter D 62 mm Outside diameter B 12 mm Width r (min.) 0. 6 mm Chamfer dimension d1 58 mm Outside diameter of inner ring D1 46. 4 mm Bore diameter of outer ring Cr 15000 N Basic dynamic load rating C0r 10000 N Basic static load rating Grease 6300 min 1 Grease lubrication da (min.) 44 mm Diameter of shaft abutment (min) da (max.) 46 mm Diameter of shaft abutment Da (max.) 58 mm Diameter of housing abutment ra (max.) 0. 6 mm
| 6908DDU |
| d | 40 | mm | Bore diameter |
| D | 62 | mm | Outside diameter |
| B | 12 | mm | Width |
| r (min.) | 0.6 | mm | Chamfer dimension |
| d1 | 58 | mm | Outside diameter of inner ring |
| D1 | 46.4 | mm | Bore diameter of outer ring |
| Cr | 15000 | N | Basic dynamic load rating |
| C0r | 10000 | N | Basic static load rating |
| Grease | 6300 | min-1 | Grease lubrication |
| da (min.) | 44 | mm | Diameter of shaft abutment (min) |
| da (max.) | 46 | mm | Diameter of shaft abutment |
| Da (max.) | 58 | mm | Diameter of housing abutment |
| ra (max.) | 0.6 | mm | Radius of shaft or housing fillet |
| fo | 15.7 | Factor |
| z | 14 | Number of Balls | |
| Dw | 6.747 | mm | Ball Diameter (mm) |
| Mass approx. | 0.112 | kg | Mass approx. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Great for hair and skin. Great buy.
These pillow cases are great for my hair and skin. They look good, hold up well in the washer and dryer, and the price is great. They are cooling. Of course I wish they could be more cooling, but honestly I'm not sure that's even possible. Great pillow cases. Already bought more for other heads. Would buy again.
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Reviewed in the United States on March 11, 2026
★★★★★ 1
Hot hot hot. Side sleepers will hate it
At first touch, these are the coldest pillowcases I own … but only for seconds. Once you actually lay on them, within seconds they adjust to your body temp, the heat feels trapped, my head begins to feel hotter than before I laid down - which has in turn caused me loathe these pillow cases. I hate that I have missed the return window. Would never buy again, would never recommend. My satin ones aren’t even this hot! I gave them the good ole 30-day try.
Side sleepers - if you are like me and sleep on your side with arm tucked under pillow - flipping this pillow over in hopes of a cold side - forget it, it’s already hot from your arm.
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Reviewed in the United States on August 29, 2025
★★★★★ 2
Ehh
Pills up rather quickly
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Reviewed in the United States on June 7, 2026
★★★★★ 3
Nice but dissapointing
So it sometimes stays cool but if it’s under a blanket and you have your body on it at all it will get warm but the spots you don’t use will get cool sometimes. I am very disappointed in the material though because it’s like my dry skin scratched the pillow case all over which makes me question it and I don’t think I would buy again.
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Reviewed in the United States on December 15, 2025
★★★★★ 5
Great pillow, but the cooling effect depends on the cover
Color: Blue-ice Plus, Size: King(Pack of 2)
I really like this pillow overall. It’s comfortable, supportive, and feels well made. When you use it without a pillowcase, it definitely feels cool to the touch and does what it claims in terms of that initial cooling sensation.
However, once you put a pillowcase on it, you can’t really feel the cooling effect anymore. I’ve tried multiple different pillowcases made from different materials, and none of them really let that cool feeling come through.
That said, I still love the pillow itself. It’s comfortable and supportive enough that I’m keeping it. Just keep in mind that the cooling feature works best without a cover, which isn’t ideal for everyone.
Overall, a good pillow — just manage expectations about the cooling effect once it’s covered.
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Reviewed in the United States on February 17, 2026