Miniature Deep Groove Ball Bearings of the Series R in inch sizes
- miniature ball bearing with smallest dimensions
- suitable for high radial loads and light axial loads in both directions
- suitable for high running accuracy, quiet running, and very high speeds
- seal: non-contact gap seal on both sides made of a profiled sheet steel disc (ZZ / 2Z) for higher speeds than with rubber seal
- good fixed bearing property, but can also be used as a floating bearing, each in both directions
- manufacturers of bearings, such asFAG, KOYO, NSK, SKF, SNR, OEM, etc. assign different suffixes for their characteristics, for better orientation take note of the comparison table of bearings (see further information)
| Bearing number | Bore Diameter (d) | Outer Diameter (D) | Width (B) | Seal | Internal Clearance | Ring Material | Rolling Element Material | Cage Material |
|---|---|---|---|---|---|---|---|---|
| R133-ZZ | 2.38 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | ||
| R144-W2.38-DRY | 3.175 | 2.38 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R144-ZZ | 3.175 | 2.779 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R2-5-W2.779-OIL | 3.175 | 7.938 | 2.779 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R2-5-ZZ | 3.175 | 7.938 | 3.571 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R2-5-ZZ-TN | 3.175 | 7.938 | 3.571 | ZZ | CN | Chrome Steel | Chrome Steel | Plastic |
| R2-2RS | 3.175 | 9.525 | 3.967 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R2-OIL | 3.175 | 9.525 | 3.967 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R2-ZZ | 3.175 | 9.525 | 3.967 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R155-W2.779-OIL | 3.967 | 7.938 | 2.779 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R155-ZZ | 3.967 | 7.938 | 3.175 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R2A-2RS | 3.175 | 4.366 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R2A-ZZ | 3.175 | 4.366 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R156-W2.779-OIL | 4.762 | 7.938 | 2.779 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R156-ZZ | 4.762 | 7.938 | 3.175 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R166-2RS | 4.763 | 9.525 | 3.175 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R166-DRY | 4.763 | 9.525 | 3.175 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R166-ZZ | 4.763 | 9.525 | 3.175 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R3-2RS | 4.762 | 4.978 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R3-W3.967 | 4.762 | 3.967 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R3-ZZ | 4.762 | 4.978 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R168-2RS | 9.525 | 3.175 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R168-ZZ | 9.525 | 3.175 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R3A-OIL | 4.762 | 15.875 | 4.978 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R3A-ZZ | 4.762 | 15.875 | 4.978 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R188-W3.175-OIL | 3.175 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel | ||
| R188-ZZ | 47.624 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | ||
| R4-2RS | 15.875 | 4.978 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R4-OIL | 15.875 | 4.978 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R4-ZZ | 15.875 | 4.978 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R4A-2RS | 7.142 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel | ||
| R4A | 7.142 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel | ||
| R4A-ZZ | 7.142 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | ||
| R1810-2RS | 7.938 | 3.967 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R1810-OIL | 7.938 | 3.967 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R1810-ZZ | 7.938 | 3.967 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R1038-2RS | 15.87 | 3.96 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R1038-OIL | 15.87 | 3.96 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R1038-ZZ | 15.87 | 3.96 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel | |
| R6-2RS | 9.525 | 22.225 | 7.14 | 2RS | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R6-W5.558-OIL | 9.525 | 22.225 | 5.558 | open | CN | Chrome Steel | Chrome Steel | Sheet Steel |
| R6-ZZ | 9.525 | 22.225 | 7.14 | ZZ | CN | Chrome Steel | Chrome Steel | Sheet Steel |
Special feature of this series
Miniature deep groove ball bearings of the series R with inch dimensions are comparatively small and have an inner diameter from 2.38 to 9.525 millimetres. Therefore, they are suitable for relatively thin shafts and axis as well as for appropriate small space requirements. In the ratio to its small size, miniature deep groove ball bearings can take up relatively high loads. They are suitable for high until an extremely high rotational speed.
Manufacturers of bearings: such as FAG, KOYO, NSK, SKF, SNR, etc. assign different suffixes for their characteristics, for better orientation take note of the comparison table of bearings (see further information)
Can be customized to meet your specific needs.
For use in special conditions. The miniature ball bearing R133-ZZ / 2Z in inch-size is small and suitable for installation with limited space and on thin shafts. It can withstand very high speeds.
Other options: Metal shield (ZZ) or rubber seal (2RS) can be provided.
Deep Groove Ball Bearings are able to accommodate low to heavy radial loads and low to moderate thrust loads in either direction. They are available with metal shields (ZZ) or rubber seals (2RS). Several tolerance grades (Abec 1-9), internal clearance (C2 to C4) and cage designs are available to best suit the running precision and speed of the application.
Common Options:
- ZZ– Two Metal Shields
- 2RS– Two Rubber Seals
- NR– Snap Ring
- M– Brass Cage
- C0– Normal Internal Clearance
- C3– Greater than normal
Related Deep Groove Ball Bearings Products
Related Deep Groove Ball Bearings Articles
Quality and Pricing
We have our own brand “TFL” and have passed ISO9001: 2000 certification. We have the most advanced production equipment bearings, bearing testing equipment, first-class production lines, and a rigorous testing process, which directly ensures product bearing quality.
Because our range of products consists of products of neutral brands, we have the possibility to offer our customers an attractive price, more quantities for purchasing, the lower price will get.
Don’t hesitate to contact us via our contact form if you have any further questions…
Find more products in China.
You can contact us any convenient way. We are available 24/7 via fax or email.
You can also use the quick contact form below or visit our office personally. Please email us with any questions or inquires or use our contact data. We would be happy to answer your questions.