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Description
NJ308 ET NSKNJ308ET d 40 mm Bore diameter D 90 mm Outside diameter B 23 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 102000 N Basic dynamic load rating C0r 81500 N Basic static load rating Thermal Speed Rating (Oil bath) 7500 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced circulation oil) 10000 min 1 Properly designed and controlled forced
| NJ308ET |
| d | 40 | mm | Bore diameter |
| D | 90 | mm | Outside diameter |
| B | 23 | 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 | 102000 | N | Basic dynamic load rating |
| C0r | 81500 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 7500 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Mechanical (forced-circulation oil) | 10000 | min-1 | Properly designed and controlled forced-circulation oil lubrication |
| Grease | 6700 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 8000 | 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. | 0.661 | kg | Mass approx. |
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4.4 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
My dog approves
Size: Medium & Large, Color: Red Scorpion, Size: Medium & Large, Color: Red Scorpion
My dog absolutely loves these flavored chew bones! She’s a very aggressive chewer, and this toy has held up really well to her constant chewing. It keeps her entertained for a long time and seems to be one of her favorite toys.
I also love the unique scorpion shape. Living in the desert, we see scorpions pretty often, so I thought it was a funny and fitting design. While I don’t expect it to turn her into a scorpion hunter, it definitely adds a fun touch!
The flavor keeps her interested, and the durable material makes it a great option for heavy chewers. Overall, a great toy that has been a huge hit with my pup. Will definitely be purchasing more!
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Cheaper than shoes!
Size: Medium & Large, Color: Red Scorpion, Size: Medium & Large, Color: Red Scorpion
Instant hit with a dog that likes chewing shoes! This is a much cheaper alternative than a new pair of shoes. They state it is indestructible but at the same time the directions state when it reaches a certain chewed up point to take it away. So obviously this is destructible but it does allow for a lot of chewing. I can not personally attest to the flavor but it must be good because the dog wanted this chew before i even unwrapped it. It is somewhat ugly in both color and shape but I have had no complaints from the dog! I also appreciate that this can be put in the dishwasher to clean. To be honest i have never considered that with other toys and I do appreciate that it can be placed in the dishwasher. Most importantly, this lasts, the dog is in love with this, there are multiple limbs for the dog to chew. It’s his new favorite toy and worth every bit of the cost!
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Durable
Size: Medium & Large, Color: Red Scorpion
This bone has proved to be durable and tasty (per our Labrador). She chews and chews with barely a dent. I’m guessing the flavor is good because it’s still her go-to bone after almost a week. Beware of your pet dropping it on your toes though as it is quite hard.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
The ONLY Bones/Chews Dog-Approved in Our House!
Flavor Name: Original Jerky, Size: X-Large
We have 2 purebred pitbulls, both adult males who weigh between 75-80 pounds. We bought a huge assortment of bones, treats, and chews when we first got our boys (they're rescues, and we got them at the same time). They strongly favored these Marrowchews, even over other, imitation products of different brands.
We actually didn't know they had marrow INSIDE the bones for quite some time, and as soon as we realized that, we understood why our dogs loved them so much! The way the marrow is embedded in the bone, but a ways in from either end, is really clever. The dogs can surely smell it long before they can taste it, and it seems to keep them really interested and motivated at first. Then, they get to the actual marrow, and they are working on these bones non-stop until it's completely gone. The way they are made is also really unique; they sort of 'splinter' as they get chewed, and it actually helps with doggie dental care, cleaning the teeth and massaging the gums. There is no mess with these bones, no pieces flaking or chunking off, anything like that. They are also completely odor-free. With other bones/chews, they'll start them, but lose interest really quickly, and never so much as look at those again. These specific Marrowchews are truly the ONLY ones that keep our dogs interested, and for a significant amount of time, too. They'll work on the XL sizes daily throughout the day for a total of 1-2 hours, and they last a couple of months, easily. And keep in mind, these are pretty
aggressive chewers!
HIGHLY recommend these, and the price on Amazon is the best anywhere!
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Reviewed in the United States on March 24, 2014
★★★★★ 5
Durable and fun
Flavor Name: Beef, Size: Medium/Large
I have two dogs and I only bought one bone over a month ago. They’ve both been chewing on it and it’s held up really well. I wouldn’t say they’re aggressive chewers, but they do like chewing.
They’re still picking it up and using it, so they’re definitely not bored with it. As for me, it’s been a pretty great buy.
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Reviewed in the United States on April 14, 2024