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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
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Description
NJ2308 EMC3 NSKNJ2308EM d 40 mm Bore diameter D 90 mm Outside diameter B 33 mm Width FW 52 mm Raceway diameter of inner ring r (min.) 1. 5 mm Chamfer dimension r1 (min.) 1. 5 mm Chamfer dimension Cr 140000 N Basic dynamic load rating C0r 122000 N Basic static load rating Thermal Speed Rating (Oil bath) 8000 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced circulation oil) 12000 min 1 Properly designed and controlled forced
| NJ2308EM |
| d | 40 | mm | Bore diameter |
| D | 90 | mm | Outside diameter |
| B | 33 | mm | Width |
| FW | 52 | mm | Raceway diameter of inner ring |
| r (min.) | 1.5 | mm | Chamfer dimension |
| r1 (min.) | 1.5 | mm | Chamfer dimension |
| Cr | 140000 | N | Basic dynamic load rating |
| C0r | 122000 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 8000 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Mechanical (forced-circulation oil) | 12000 | min-1 | Properly designed and controlled forced-circulation oil lubrication |
| Grease | 6000 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 7500 | min-1 | Oil-bath lubrication |
| da (min.) | 48 | mm | Diameter of shaft abutment (min) |
| db (min.) | 48 | mm | Diameter of shaft / spacer sleeve abutment |
| db (max.) | 50 | mm | Diameter of shaft / spacer sleeve abutment |
| dc (min.) | 55 | mm | Diameter of shaft abutment |
| dd (min.) | 60 | mm | Diameter of shaft abutment |
| Da (max.) | 82 | mm | Diameter of housing abutment |
| rb (max.) | 1.5 | mm | Radius of shaft or housing fillet |
| ra (max.) | 1.5 | mm | Radius of shaft or housing fillet |
| Mass approx. | 1.1 | 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
4.6 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 4
Not indestructible, but the best I’ve found
Color: Onyx Black - Most Durable, Color: Onyx Black - Most Durable
This thing is unexpectedly heavy for its size. My 18 month old Giant Schnauzer is obsessed with fetch but destroys every ball she gets. The other brands marketed for extreme chewers tend to last about a day or two before they’re totally shredded. She’s had this one for about 2 weeks and it’s looking rough, but still holding together for the most part. I appreciate that as it comes apart it does so in little pieces rather than large chunks. While it’s far from indestructible, it’s the strongest I’ve found so far.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Great product!
Color: Onyx Black - Most Durable
Great product! Quickly became my Pit Princess's favorite toy! The size, weight, and material is perfect for a big dog. Now we have fetch ball that has proven itself to be worthy!
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Reviewed in the United States on May 8, 2026
★★★★★ 3
good but not indestructible
Color: Onyx Black - Most Durable, Color: Onyx Black - Most Durable
pretty good but definitely not indestructible
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Yes!
Size: Medium
Durable. Squeak doesn't last forever with my aggressive chewers but crinkle does. Best balls.
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Balls
Size: Medium
My dog loves chasing these balls. He seems to love the squeak! They fit the chuck it stick perfectly, and are great replacements for the originals that came with the stick.
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Reviewed in the United States on February 7, 2026