Needle Roller Bearings of the series NA49

Special feature of this series: Main dimensions according to DIN 617. Needle roller bearings of the series NA49 are narrower and lighter than needle roller bearings of the series NA69 but can still support relatively high radial loads.

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Needle Roller Bearing with Inner Ring NA4913 open 65x90x25 mm

Item number: NA4913

Item features:

Delivery time: Available

from 4 pcs per 35,16 €
from 10 pcs per 33,31 €
from 50 pcs per 32,57 €
from 200 pcs per 31,46 €
from 1000 pcs per 29,98 €

37,01 € *

incl. 19% VAT , plus (Standard)

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Special design of the roller bearing

Needle roller bearings are supplied with or without an inner ring. Needle roller bearings without an inner ring run directly on the shaft, which can save space. For this, there are higher requirements for the quality of shaft (surface, hardness).

Maximum permissible load capacity of the bearing based on the materials used and the geometric design.

Noise level of the bearing during operation.

Smooth-running bearings have low frictional resistance.

Resistance of the materials used in the bearing to water and other corrosive media.

Maximum permissible speed of the bearing.

Protection of the bearing from the ingress of foreign particles and liquids.

Highest ambient temperature at which the bearing can be used without restrictions

Lowest ambient temperature at which the bearing can be used without restrictions

The bearing clearance is the amount by which the two rings of a non-installed roller bearing can be displaced in relation to one another. There are different internal clearance classes. CN is "normal internal clearance" and is the best choice for many applications. C3, C4, ... indicates increased clearance. C2, C1, ... stands for reduced clearance.

Type of sealing of the bearing to protect it from contamination.

Inner and outer ring material

Material of the rolling element (i.e. the balls or rollers)

Material of the cage (the cage holds the rolling elements in place)

Type of lubrication of the rolling bearing. Rolling bearings are usually either greased, oiled or dry.