Welcome to Ecer
Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Consent Do not consent
China factories

Chat Now Send Email
China factory - Wuxi Guangqiang Bearing Trade Co.,Ltd

Wuxi Guangqiang Bearing Trade Co.,Ltd

  • China
  • Verified Supplier
  1. Home
  2. Products
  3. About Us
  4. Contact Us

Leave a Message

we will call you back quickly!

Submit Requirement
  1. Home>
  2. Needle Roller Bearing>
  3. stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery
China stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery
China stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery

  1. China stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery
  2. China stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery
  3. China stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery
  4. China stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery

stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery

  1. MOQ： 1.PCS
  2. Price： $1.9 - $3
  3. Get Latest Price
Payment Terms T/T,Western Union,Paypal,MoneyGram
Supply Ability 100000.pcs / Month
Delivery Time Within 3 working days
Packaging Details Standard Carton Box / Wooden Pallet Case.
Material Bearing Steel GCr15
Structure Needle Roller Bearing
Precision P0 ; P6
Stock Quantity 6200.pcs
Lubrication Oil Grease
Bore Size 17mm
Outer Diameter 30mm
Size 17*30*13mm
Brand Name Optional
Model Number NA4903
Certification ISO9000/ISO14001
Place of Origin GERMANY ; CHINA ; Etc.

View Detail Information

Inquiry by Email Get Latest Price
Chat online Now Ask for best deal

Explore similar products

  1. China ID 29mm Gcr15 Automotive Needle Roller Bearing F-232349

    ID 29mm Gcr15 Automotive Needle Roller Bearing F-232349

    Chat online Now
  2. China F-232032-60 Needle Roller Bearing Steel Cage Metric Needle Bearings

    F-232032-60 Needle Roller Bearing Steel Cage Metric Needle Bearings

    Chat online Now
  3. China Gcr15 steel Material INA F-211810 Needle Roller Bearing without Inner Ring

    Gcr15 steel Material INA F-211810 Needle Roller Bearing without Inner Ring

    Chat online Now
  4. China Plastic Cage FF3525 Linear Flat Needle Roller Bearing

    Plastic Cage FF3525 Linear Flat Needle Roller Bearing

    Chat online Now
  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T,Western Union,Paypal,MoneyGram Supply Ability 100000.pcs / Month
Delivery Time Within 3 working days Packaging Details Standard Carton Box / Wooden Pallet Case.
Material Bearing Steel GCr15 Structure Needle Roller Bearing
Precision P0 ; P6 Stock Quantity 6200.pcs
Lubrication Oil Grease Bore Size 17mm
Outer Diameter 30mm Size 17*30*13mm
Brand Name Optional Model Number NA4903
Certification ISO9000/ISO14001 Place of Origin GERMANY ; CHINA ; Etc.
High Light stainless steel needle roller bearings ，sealed needle roller bearings 17x30x13mm ，needle roller bearings for machinery construction

stainless steel NA4903 sealed needle roller bearings 17*30*13mm for Machinery Construction Farm Industries 

NA4903 is a needle roller bearing with a separable design (the inner ring and needle roller assembly can be removed from the outer ring), featuring standard internal clearance, and is typically supplied unlubricated. Its core design relies on needle rollers—small-diameter, high-length rollers that enable it to withstand heavy radial loads while occupying a compact radial space. The separable structure facilitates easy installation, maintenance, and replacement, as the inner components can be handled independently from the outer ring.
The needle rollers are manufactured with high surface finish and dimensional accuracy, ensuring uniform load distribution across their contact areas with the inner and outer rings. This design not only maximizes load-carrying capacity but also minimizes friction operation even under high-speed or intermittent load conditions. The standard internal clearance balances rotational flexibility and load stability, while the unlubricated supply format allows users to select optimal lubrication based on operating temperatures, speeds, and environmental demands.

Sizes:

17mm ID × 30mm OD × 13mm Width

Interchange:

NA4903 (cross-brand equivalents such as SKF NA4903, NSK NA4903, Timken NA4903), and needle roller bearings with identical "17mm ID + 30mm OD + 13mm width" specifications

Applications:

Machinery, Construction, Farm Industries, as well as Automotive Components, Small-Scale Engineering Machinery, and other scenarios where high radial load capacity and compact installation space are critical.

Parameter Item Details
Product Model NA4903 Needle Roller Bearing
Inner Diameter (ID) 17mm
Outer Diameter (OD) 30mm
Width


13mm
Material Chrome Steel


Relative Model

Bearing Model d D T Weight
(mm) (mm) (mm) (kg)
RNA6901 12 24 22 0.030
RNA6902 15 28 23 0.038
RNA6903 17 30 23 0.040
RNA6904 20 37 30 0.096
RNA6905 25 42 30 0.112
RNA6906 35 47 30 0.126
RNA6907 42 55 36 0.182
RNA6908 48 62 40 0.247
RNA6909 52 68 40 0.334
RNA6910 58 72 40 0.291
RNA6911 63 80 45 0.458
RNA6912 68 85 45 0.490
RNA6913 72 90 45 0.541
RNA6914 80 100 54 0.827
RNA6915 85 105 54 0.866
RNA6916 90 110 54 0.916
RNA6917 100 120 63 1.170
RNA6918 105 125 63 1.21
RNA6919 110 130 63 1.27
RNA6920 100 140 71 -


Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Distributor/Wholesaler,Exporter,Trading Company

  • Year Established:

    1989

  • Total Annual:

    1000000-10000000

  • Employee Number:

    10~100

  • Ecer Certification：

    Verified Supplier

  Established in 1999, Wuxi Guangqiang Bearing Trade Co.,Ltd works hard in researching and manufacturing high quality bearings and rely on it's advantages of strong technologies, advanced equipment, professional technical team, quality production and reasonable prices has gain a b...   Established in 1999, Wuxi Guangqiang Bearing Trade Co.,Ltd works hard in researching and manufacturing high quality bearings and rely on it's advantages of strong technologies, advanced equipment, professional technical team, quality production and reasonable prices has gain a b...

+ Read More

Get in touch with us

  • Reach Us
  • Wuxi Guangqiang Bearing Trade Co.,Ltd
  • https://www.ball-rollerbearing.com/

Leave a Message, we will call you back quickly!

Email

Check your email

Phone Number

Check your phone number

Requirement Details

Your message must be between 20-3,000 characters!

Submit Requirement

Trade Alert - Delivering the latest product trends and industry news straight to your inbox.

Home Categories About Us
RFQ Report IPR products Privacy Policy Sitemap

© 2025 Chinax.com. All rights reserved.