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Description
NU320 WC3 NSKNU320W d 100 mm Bore diameter D 215 mm Outside diameter B 47 mm Width FW 129. 5 mm Raceway diameter of inner ring r (min.) 3 mm Chamfer dimension r1 (min.) 3 mm Chamfer dimension Cr 365000 N Basic dynamic load rating C0r 335000 N Basic static load rating Thermal Speed Rating (Oil bath) 4000 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Grease 2200 min 1 Grease lubrication Oil (Oil bath) 2800 min 1 Oil bath lubrication da
| NU320W |
| d | 100 | mm | Bore diameter |
| D | 215 | mm | Outside diameter |
| B | 47 | mm | Width |
| FW | 129.5 | mm | Raceway diameter of inner ring |
| r (min.) | 3 | mm | Chamfer dimension |
| r1 (min.) | 3 | mm | Chamfer dimension |
| Cr | 365000 | N | Basic dynamic load rating |
| C0r | 335000 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 4000 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Grease | 2200 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 2800 | min-1 | Oil-bath lubrication |
| da (min.) | 113 | mm | Diameter of shaft abutment (min) |
| db (min.) | 113 | mm | Diameter of shaft / spacer sleeve abutment |
| db (max.) | 126 | mm | Diameter of shaft / spacer sleeve abutment |
| dc (min.) | 132 | mm | Diameter of shaft abutment |
| dd (min.) | 143 | mm | Diameter of shaft abutment |
| Da (max.) | 202 | mm | Diameter of housing abutment |
| rb (max.) | 2.5 | mm | Radius of shaft or housing fillet |
| ra (max.) | 2.5 | mm | Radius of shaft or housing fillet |
| Mass approx. | 7.7 | kg | Mass approx. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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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
4.1 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Fit great
Size: Large, Color: (100) White / White / Halo Gray
Been a couple of months and they seem to be holding up nicely. Real picky about fit of socks and these fit well. They are very thin but very comfortable.
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Reviewed in the United States on October 21, 2024
★★★★★ 5
Always a win
Size: Large, Color: (001) Black / Black / Castlerock
Under armor is always a win! Comfortable, no peeling, true to size, no squeezing around the arch of foot & affordable.
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Reviewed in the United States on January 4, 2026
★★★★★ 4
Fit well and stay up
Size: Large, Color: (299) City Khaki / City Khaki / White
They're a little thin, so good mainly for warmer months. But they fit very well and I've not experienced any slippage
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Llego a tiempo
Size: X-Large, Color: (001) Black / Black / Castlerock
Bien
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Reviewed in the United States on April 28, 2026
★★★★★ 3
Low quality socks.
Size: Large, Color: (001) Black / Black / Castlerock
I have been buying Under Armour undergarments for years and have noticed a steady decline in quality. These socks are no different. I purchased another six packs of very similar styled Under Armour socks in 2023 and recently they have started wearing out. Those socks are no longer available for reorder, but these extremely similar socks were so I ordered them. The quality difference is obvious just by looking at and feeling them. They are more of a faded black/brown than the black pictured or the black that the three year old socks still are. The material is completely different and feels lighter. When wearing them they already feel like they are bunching up in my shoes, which the old ones never did. I do not expect these to last even a year and will not buy them again.
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Reviewed in the United States on March 29, 2026