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⚙️ Keep your gear spinning flawlessly — because every revolution counts!
The TIMKEN 6203-ZZ Double Metal Seal Bearings come as a 2-pack of single row radial ball bearings, sized 17x40x12mm. Made from 100% chrome steel with double metal seals on both sides, they are pre-greased and support speeds up to 20,000 RPM, delivering reliable, long-lasting performance for cycling and industrial applications.
| ASIN | B08K76H85W |
| Bearing Number | 6203 2Z |
| Bearing Type | Ball Bearing |
| Best Sellers Rank | #19,702 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #35 in Deep-Groove Ball Bearings |
| Brand | TIMKEN |
| Brand Name | TIMKEN |
| Compatible Lubricant | Grease |
| Customer Reviews | 4.8 out of 5 stars 271 Reviews |
| Item Thickness | 12 millimeters |
| Item Weight | 120 g |
| Manufacturer | TIMKEN |
| Material | Material, Metal, Steel |
| Material Type | Material,Metal,Steel |
| Model | 6203-ZZ |
| Number of Items | 2 |
| Outside Diameter | 40 millimeters |
| Part Number | 6203-ZZ |
| Specification Met | ABEC 1 |
| UPC | 087796293083 |
S**D
Fit the application.
Sizing was accurate.
M**D
Timken
Good bearing very reliable
C**M
Great value
Replaced a bearing on my NordicTrack treadmill that would have cost hundreds for a new motor, and even more for a professional to come to my house. Well worth $15.
P**L
Timken bearings are typically my preferred option. Worked as I was expecting it to.
Needed a new bearing for an electric motor. Installed the bearing and its working as expected.
C**H
Fits Proform Pro 2000 Treadmill
The rear roller bearings were worn our and clunking in our Proform Pro 2000 treadmill, so I investigated a fix. The roller with bearings is over $100, but the bearings can be removed and replaced separately. After a few Youtube videos, I was confident it could be done with little effort for ~$15 in bearings. These are ZZ or 2Z, but fit the same space as a "Z" model. Treadmill is smooth and quiet again, but these do appear to be made in China (box says printed in CN) so I'll update if they wear prematurely.
D**H
Works for me…
Replaced the bearings in the belt idlers on a 2004 Nissan Frontier.
E**E
excellent quality
this bearings are top notch, last longer
R**R
Timken quality
They’re Timken bearings. What else is there to say. 100% quality
Trustpilot
2 weeks ago
1 month ago