NAV Needle Roller Bearings — Sizes & Specifications
The NAV series is the full-complement version of the NA needle roller bearing: with no cage, a full row of needle rollers gives the highest load capacity of the 4900 series, for slower, heavily loaded shafts in gearboxes and heavy machinery. BPK supplies NAV4900 to NAV4910, factory-direct from Yandian, Shandong, for importers, distributors and OEM buyers.
Standard sizes
| Model | Bore d (mm) | |
|---|---|---|
| NAV4900 | 10 | Inquiry |
| NAV4901 | 12 | Inquiry |
| NAV4902 | 15 | Inquiry |
| NAV4903 | 17 | Inquiry |
| NAV4904 | 20 | Inquiry |
| NAV4905 | 25 | Inquiry |
| NAV4906 | 30 | Inquiry |
| NAV4907 | 35 | Inquiry |
| NAV4908 | 40 | Inquiry |
| NAV4909 | 45 | Inquiry |
| NAV4910 | 50 | Inquiry |
Model notation identifies a family, not a fixed size. Please confirm bore diameter, outer diameter, overall length, mounting, sealing, material, and load requirements with your drawing.
Every model above links straight to the inquiry form with the model prefilled — send your quantity and destination, and we prepare the quotation.
Options & matching parts
Caged NA bearings suit higher speeds; RNA removes the inner ring for the most compact radial section.
Ordering from BPK
Samples first if you need to check fit and quality; bulk and OEM orders (your logo, your box) supported. MOQ from 1 piece on standard sizes.
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