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Needle roller bearing NA4900 series NA4901 /4902 /4903

2017-12-19
service content:


Bearing roller 98204Y

 

Needle roller bearing NA4900 series NA4901 /4902 /4903

Quick Details

Type: Needle

Bore Size: 0 - 10 mm

Outside Diameter: 0 - 22 mm

Model Number: NA4900

Precision Rating: P1 P2 P3 P4 P5 P6

Seals Type: OPEN/ZZ/2RS

Number of Row: Single Row

Place of Origin: Shandong, China (Mainland)

height: 13mm

certificate: ISO 9001:2000

sample: available

Material: Chrome Steel GCR15

Lubrication: Free-running Grease

Cage: Steel Cage.copper Cage.nylon Cage

Feature: Long life time

 

 

A needle roller bearing is a bearing which uses small cylindrical rollers.

They are used to reduce friction of a rotating surface.

Needle bearings have a large surface area that is in contact with the bearing

outer surfaces compared to ball bearings. Additionally there is less added clearance

(difference between the diameter of the shaft and the diameter of the bearing) so

they are much more compact.

The typical structure consists of a needle cage which orients and contains the needle

rollers, the needle rollers themselves, and an outer race (sometimes the housing itself).

Radial needle bearings are cylindrical and use rollers parallel to the axis of the shaft.

Thrust needle bearings are flat and use a radial pattern of needles.

Full complement bearings have solid inner and outer rings and rib-guided cylindrical rollers.

Since these bearings have the largest possible number of rolling elements, they have

extremely high radial load carrying capacity and are suitable for particularly compact designs.

 

Brand

SEMRI needle bearings (OEM available)

Name

Needle bearing NA4900 series NA4901 /4902 /4903 needle roller bearing

Model

NA Series

SCE Series

Material

Gcr15

Certificate

ISO9001:2001

Precision

P0, P6, P5, P4

Bore Size:

3mm-200mm

Outside diameter

6mm-300mm

Clearance

C0,C1,C2,C3,C4,C5 etc.

Cage Type

Brass cage or Stainless cage

Seals Type

ZZ,RS, 2RS, R2, Z, 2Z, 2RZ etc

Features

High load-carrying capacity

Suitable for high speeds

Particularly easy to install

Application

Gear pumps

Sheaves

Automotive transmissions

Two-cycle engines

Package

pallet, wooden case,industrial package or as customers' requirement

Delivery terms

EXW,FOB, CFR, CIF

Delivery Time

1-5 days depends on purchase quantity

 

 

Needle roller bearing NA4900

 

 

TIANJIN SEMRI BEARING TECHNOLOGY CO.,LTD

If you need any types bearing,please contact us.We will do our best service for you.

http://www.semribearing.com/

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