K Needle Roller and Cage Assemblies — Sizes & Specifications
The K series is a radial needle roller and cage assembly — the bearing element itself, running directly between the shaft and the housing bore, which both serve as raceways. The model gives the full envelope: K20x24x13 is 20 mm bore, 24 mm OD, 13 mm wide. K assemblies are the standard bearing inside connecting rods, gearboxes and pumps. BPK supplies the K range listed here, factory-direct from Yandian, Shandong, for importers, distributors and OEM buyers.
Standard sizes
| Model | Bore d (mm) | |
|---|---|---|
| K10x14x10 | 10 | Inquiry |
| K12x16x10 | 12 | Inquiry |
| K14x18x10 | 14 | Inquiry |
| K16x20x10 | 16 | Inquiry |
| K18x22x13 | 18 | Inquiry |
| K20x24x13 | 20 | Inquiry |
| K22x26x13 | 22 | Inquiry |
| K25x29x13 | 25 | Inquiry |
| K28x33x17 | 28 | Inquiry |
| K30x35x13 | 30 | Inquiry |
| K32x37x17 | 32 | Inquiry |
| K35x40x17 | 35 | Inquiry |
| K40x45x17 | 40 | Inquiry |
| K45x50x17 | 45 | Inquiry |
| K50x55x20 | 50 | Inquiry |
| K55x60x20 | 55 | Inquiry |
| K60x65x20 | 60 | 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
Complete bearings with their own rings are listed under NK, NKI and NA. Thrust assemblies are listed under AXK.
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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