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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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For Your Every Summer RSVP, with Code: SUMMER15
Description
nj307 et nskNJ307ET d 35 mm Bore diameter D 80 mm Outside diameter B 21 mm Width FW 46. 2 mm Raceway diameter of inner ring r (min.) 1. 5 mm Chamfer dimension r1 (min.) 1. 1 mm Chamfer dimension Cr 82000 N Basic dynamic load rating C0r 65500 N Basic static load rating Thermal Speed Rating (Oil bath) 8500 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced circulation oil) 11000 min 1 Properly designed and controlled forced
| NJ307ET |
| d | 35 | mm | Bore diameter |
| D | 80 | mm | Outside diameter |
| B | 21 | mm | Width |
| FW | 46.2 | mm | Raceway diameter of inner ring |
| r (min.) | 1.5 | mm | Chamfer dimension |
| r1 (min.) | 1.1 | mm | Chamfer dimension |
| Cr | 82000 | N | Basic dynamic load rating |
| C0r | 65500 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 8500 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Mechanical (forced-circulation oil) | 11000 | min-1 | Properly designed and controlled forced-circulation oil lubrication |
| Grease | 7500 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 9500 | min-1 | Oil-bath lubrication |
| da (min.) | 43 | mm | Diameter of shaft abutment (min) |
| db (min.) | 41.5 | mm | Diameter of shaft / spacer sleeve abutment |
| db (max.) | 45 | mm | Diameter of shaft / spacer sleeve abutment |
| dc (min.) | 48 | mm | Diameter of shaft abutment |
| dd (min.) | 53 | mm | Diameter of shaft abutment |
| Da (max.) | 72 | mm | Diameter of housing abutment |
| rb (max.) | 1 | mm | Radius of shaft or housing fillet |
| ra (max.) | 1.5 | mm | Radius of shaft or housing fillet |
| Mass approx. | 0.489 | 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.
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- To process your return/exchange, please contact us at [email protected]
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4.5 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Cheap but good for what we do!
Color: Dark Blue
I wouldn't play tennis with them -- not that quality. However, we use a chuck-it thrower for our pooch and it's the perfect ball. When she's rips them open it's no big loss. Chinese.
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Reviewed in the United States on February 10, 2026
★★★★★ 4
Good Quality but Lose Bounce Over Time
Color: Yellow
Solid tennis balls overall, but after a couple of weeks of daily use they start losing pressure. Still a great deal for casual games or practice.
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Reviewed in the United States on October 29, 2025
★★★★★ 5
My dogs are obsessed with these
Color: Multicolour, Color: Multicolour
Red, Molly, and Karma are absolutely obsessed with these tennis balls. They’re bright and easy to spot outside in the grass, hold up surprisingly well during rough play, and don’t immediately shred apart like a lot of dog toys do. Great for fetch and everyday play time — definitely a favorite in our house.
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Reviewed in the United States on May 22, 2026
★★★★★ 3
Not Tough Enough
Color: Multicolour
Not as tough as Wilson’s. Easy to be chewed and busted by pet.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Great exercise tool
Color: Multicolour
I use these to help with my physical
Therapy and deep tissue massages at home. These were a low cost and I can have them
In multiple locations.
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Reviewed in the United States on May 26, 2026