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IKO NA4911 Machined Needle Roller Bearing 55x80x25mm (With Inner Ring)
IKO NA4911 machined-type needle roller bearing, with inner ring. Bore 55mm, OD 80mm, width 25mm. High radial load capacity.
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- High running accuracy and rigidity for demanding industrial drives
- IKO (Nippon Thompson) precision manufacture to JIS standards
- Machined-type needle roller bearing - thick, rigid machined and ground outer ring
- Matching inner ring: LRT 556325
- Supplied with an integral inner ring for mounting on unhardened shafts
- Very high radial load and shock capacity in a compact cross section
| Brand | IKO |
|---|---|
| Bearing Type | Machined Needle Roller Bearing |
| Series | NA |
| Measurement System | Metric |
| Inner Diameter (Bore) | 55 mm |
| Outer Diameter | 80 mm |
| Width | 25 mm |
| Configuration | With Inner Ring |
| Material | Chrome Bearing Steel |
| Dynamic Load Rating (Cr) | 57600 N (57.6 kN) |
| Static Load Rating (C₀) | 97200 N (97.2 kN) |
| Limiting Speed (Grease) | 3900 rpm |
| Limiting Speed (Oil) | 6500 rpm |
| Compatible Inner Ring | LRT556325 |
| Weight | 0.41 kg |
| Features & Benefits | High running accuracy and rigidity for demanding industrial drives IKO (Nippon Thompson) precision manufacture to JIS standards Machined-type needle roller bearing - thick, rigid machined and ground outer ring Matching inner ring: LRT 556325 Supplied with an integral inner ring for mounting on unhardened shafts Very high radial load and shock capacity in a compact cross section |
The IKO NA4911 is a machined-type needle roller bearing with its own inner ring, for a 55mm shaft (metric series). Machined and ground from solid bearing steel, it has a thick, rigid outer ring that carries very high radial loads and shock in a compact section. Boundary dimensions 55 x 80 x 25mm.
The integral inner ring provides a ready raceway so the bearing can mount directly on a soft or unhardened shaft. Suitable for high radial loads in gearboxes, pumps, and industrial machinery. Compatible inner ring: LRT 556325. Manufactured by IKO (Nippon Thompson), Japan.
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