Wuxi Guangqiang Bearing Trade Co.,Ltd
| Certifiion | ISO9000/ISO14001 |
| Payment Terms | T/T,,Paypal, |
| 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 |
| Lubriion | Oil Grease |
| Bore Size | 17mm |
| Outer Diameter | 30mm |
| Size | 17*30*13mm |
| Brand Name | Optional |
| Model Number | NA4903 |
| Place of Origin | GERMANY ; CHINA ; Etc. |
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Product Specification
| Certifiion | ISO9000/ISO14001 | Payment Terms | T/T,,Paypal, |
| 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 | Lubriion | Oil Grease |
| Bore Size | 17mm | Outer Diameter | 30mm |
| Size | 17*30*13mm | Brand Name | Optional |
| Model Number | NA4903 | Place of Origin | GERMANY ; CHINA ; Etc. |
| High Light | Machinery Construction Needle Roller Bearing ，Farm Industries Needle Roller Bearing ，17*30*13mm Needle Roller Bearing | ||
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 unlubried. 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 unlubried supply format allows users to select optimal lubriion based on operating temperatures, speeds, and environmental demands.
17mm ID × 30mm OD × 13mm Width
NA4903 (cross-brand equivalents such as SKF NA4903, NSK NA4903, Timken NA4903), and needle roller bearings with identical "17mm ID + 30mm OD + 13mm width" specifiions
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 |
| 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
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 broad... 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 broad...
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