Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
NU321 WC3 NSKN321W d 105 mm Bore diameter D 225 mm Outside diameter B 49 mm Width EW 195 mm Raceway diameter of outer ring r (min.) 3 mm Chamfer dimension r1 (min.) 3 mm Chamfer dimension Cr 420000 N Basic dynamic load rating C0r 390000 N Basic static load rating Thermal Speed Rating (Oil bath) 3800 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Grease 2200 min 1 Grease lubrication Oil (Oil bath) 2600 min 1 Oil bath lubrication da (min.)
| N321W |
| d | 105 | mm | Bore diameter |
| D | 225 | mm | Outside diameter |
| B | 49 | mm | Width |
| EW | 195 | mm | Raceway diameter of outer ring |
| r (min.) | 3 | mm | Chamfer dimension |
| r1 (min.) | 3 | mm | Chamfer dimension |
| Cr | 420000 | N | Basic dynamic load rating |
| C0r | 390000 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 3800 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Grease | 2200 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 2600 | min-1 | Oil-bath lubrication |
| da (min.) | 118 | mm | Diameter of shaft abutment (min) |
| Db (min.) | 200 | mm | Diameter of housing abutment |
| rb (max.) | 2.5 | mm | Radius of shaft or housing fillet |
| Db (max.) | 212 | mm | Diameter of housing abutment |
| ra (max.) | 2.5 | mm | Radius of shaft or housing fillet |
| Mass approx. | 8.7 | 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
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.5 ★★★★★
Based on 1390 reviews
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Product Reviews
★★★★★ 5
The perfect sock!
Size: 6-10, Color: Halo Gray/Assorted
The only socks that I can wear with my hey dudes. They stay on my ankles and never slid down into the shoe. I will forever order these as long as they are available. They are comfy too!
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Reviewed in the United States on August 21, 2025
★★★★★ 5
Good option, especially in warmer weather
Size: 6-10, Color: Black
High quality socks and very durable. Nice touch adding the grip on the back of the ankle so the sock stays up. Size is a true fit to the size of your foot as well.
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Reviewed in the United States on April 17, 2025
★★★★★ 5
Love these socks!
Size: 6-10, Color: White
Comfortable, no show, and most importantly The Do No Slip!!!! I keep coming back to add to my supply because they have become the only sock I wear. I’ve been using them for a couple years now and they hold to great to washing, bleaching and the dryer. Highly recommended.
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Reviewed in the United States on July 24, 2024
★★★★★ 5
The only socks I will buy
Size: 6-10, Color: Halo Gray/Assorted
These are hands down my favorite socks to wear with tennis shoes. Bought my original 6 pack in the store, liked them so much I went buy more and they were gone. These don't slip on your heel like most socks do. Come up high enough on the top of your foot to protect from tongue rubbing (I giggled when I wrote that) and they come in fun colors. Love they are ultra no show and provide padding but people can't see them with shoes on. Five stars!
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Reviewed in the United States on January 12, 2023
★★★★★ 5
Socks
Size: Medium, Color: Black
Amazing socks. Fits Amazing.
I tried to buy the six pack and it wasn’t the same. Thinner material. The 3 pack is great. Would buy again if it comes up.
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Reviewed in the United States on September 16, 2025
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