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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
NU230 EMC3 NSKN230M d 150 mm Bore diameter D 270 mm Outside diameter B 45 mm Width EW 238 mm Raceway diameter of outer ring r (min.) 3 mm Chamfer dimension r1 (min.) 3 mm Chamfer dimension Cr 460000 N Basic dynamic load rating C0r 490000 N Basic static load rating Thermal Speed Rating (Oil bath) 3000 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.)
| N230M |
| d | 150 | mm | Bore diameter |
| D | 270 | mm | Outside diameter |
| B | 45 | mm | Width |
| EW | 238 | mm | Raceway diameter of outer ring |
| r (min.) | 3 | mm | Chamfer dimension |
| r1 (min.) | 3 | mm | Chamfer dimension |
| Cr | 460000 | N | Basic dynamic load rating |
| C0r | 490000 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 3000 | 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.) | 163 | mm | Diameter of shaft abutment (min) |
| Db (min.) | 243 | mm | Diameter of housing abutment |
| rb (max.) | 2.5 | mm | Radius of shaft or housing fillet |
| Db (max.) | 257 | mm | Diameter of housing abutment |
| ra (max.) | 2.5 | mm | Radius of shaft or housing fillet |
| Mass approx. | 11.5 | 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
4.9 ★★★★★
Based on 564 reviews
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Product Reviews
★★★★★ 4
Cheap Gshock replacement, good value
For $13 this is a steal. It's essentially a casio illuminator w larger bright dial, press once for 5 sec of light then goes dark. Date, time (12 and 24hr), stop watch. The basics, all I needed. A+
Edit: updated the waterproofing is non-existent. It's not even water resistant so treat accordingly don't bring into the shower. The face plastic cracked on me from moderate use, still legible and since I don't test it with water not an issue. The buttons are very sensitive so activities like lifting can cause the bottom left button to depress and switch to stopwatch, or engage the stopwatch.
After over a year use I still rank this as a good value. It does the one thing I wish Casio would do is improve light illumination time. The buttons depress easier than Casio's which is a bonus imo, but can be aggravating to some. The water resistance doesn't exist so purchase accordingly.
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Reviewed in the United States on November 29, 2023
★★★★★ 5
Great watch, wristband wears out after a while. Uses a Skmei 1251 band.
Watch is reliable, doesn't drift in time too much, very efficient on battery, has gotten complimented on the look a few times and has a nice user interface. It's also great to be able to see the date without pressing any buttons.
The band has fatigued and snapped after many months of putting on and taking off the watch, but If you'd like to find a replacement band, search for Skmei 1251 wristbands.
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Reviewed in the United States on June 8, 2025
★★★★★ 5
Inexpensive sports watch that was easy to set up and works well.
I have had this watch for a few days. The included instructions were very basic, but I figured out how to set everything up pretty easily. The watch band is pretty adjustable, fits my fairly wide wrists very well. For the price, about half the cost of the name brand very similar watch it replaced, the watch works well, I am very pleased.
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Reviewed in the United States on February 22, 2026
★★★★★ 5
This is a great watch for the price!
I purchased this watch to use mostly down at my cabin. It is well-made, the functions are easy to use, and it has withstood all the abuse I’ve put it through. I wear this while hunting, cutting firewood, riding ATVs, and just running around the timber. If I destroy this watch in six months, it will be well worth the money I paid for it, but I don’t think that’s going happen. It’s stylish enough to wear to the office and just going out. If you’re looking for an every day watch, you’re not worried about destroying, this is the one to get.
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Reviewed in the United States on December 11, 2023
★★★★★ 3
Excellent Time Keeper // Terrible Wristband !
The watch itself is fantastic. When I first got it, and set it up, I set it to the time on my computer, which is as accurate as you can get. In the beginning I checked the time accuracy daily. After a few weeks my time checks changed to once, or twice a week. I never had to change the watch's time. The seconds would vary a little, in comparison to the computer clock. But, it never got more than 30 seconds either side of the computer clock. However, the watchband is a big time NO-GO! The buckle, where you connect it on your wrist, can be frustrating most of the time when you are trying to put it on. Once you've got it on, the strap that goes beyond the buckle is held down by a sliding keeper, that slides in and out depending on what you're doing. Terrible design! I wanted to buy a "Twist-a-Flex" wristband, but couldn't find one that matched the unusual design where the straps attach to the watch body. I bought the watch 4 months ago. Today, one of the 4 pins, that connect the straps to the watch body, fell out somewhere, making the watch impossible to wear. Excellent price. Excellent timepiece. Worst design for a wristband that I've ever seen.
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Reviewed in the United States on September 22, 2020
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