NSK 30303 D tapered roller bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Tapered roller bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
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How to read NSK 30303 D
- 303Series
- Tapered roller bearings, 303 series. For the same bore, each series has a different outside diameter and width.
- 03Bore
- 17 mm bore: code 03 stands for 17 mm by standard.
- DSuffix
- NSK suffix: it defines the variant (sealing, cage, internal clearance or other features).
30303 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The NSK 30303 D bearing has a 17 mm bore, a 47 mm outside diameter and a 15.25 mm total width (17 x 47 x 15.25 mm).
NSK 30303 D is a reference of tapered roller bearing, within Bearings. Request a quote for 30303 D via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The NSK D series tapered roller bearing is a component designed to support combined radial and axial loads, with high load capacity and rigidity. It is used in applications requiring precision and durability, such as industrial machinery, automotive, and transmission equipment. Its tapered roller design allows uniform load distribution, contributing to smooth and long-lasting operation. MR Accesorios Industriales sells this series for the Argentine market, offering technical advice and personalized quotes.
The D series designation in NSK bearings is interpreted as follows: the main number indicates the size and dimension series, while the D suffix indicates a specific design feature, such as an optimized contact angle or a particular cage design. For example, in 30303 D, 30304 D, 30332 D, 30334 D, 30336 D, and 30340 D, the D suffix remains constant, suggesting a common variant within the series. Understanding this nomenclature helps select the right bearing for each application.
These bearings are used in a wide variety of industries in Argentina, including automotive, metalworking, food, and mining. They are found in gearboxes, reducers, wheel hubs, machine tool spindles, and material handling equipment. Their ability to support combined loads makes them ideal for applications where the load direction changes or is simultaneous on two axes. Locally, they are common in agricultural machinery repair and production lines.
To correctly select a tapered roller bearing, it is essential to consider the magnitude and direction of loads, operating speed, and environmental conditions. Installation requires precise alignment and proper adjustment of axial clearance, usually achieved with lock nuts or shims. Lubrication, whether grease or oil, must be appropriate for the temperature and speed. Sealing is key to preventing contamination and lubricant loss, extending bearing service life.
Regarding equivalences and interchangeability, tapered roller bearings from different manufacturers can be interchangeable if they share the same dimensions and design features. However, it is important to verify tolerances and load capacities, as they may vary between brands. NSK is a recognized brand that MR Accesorios Industriales sells, and we can advise you on compatibility with other brands. It is always advisable to consult our technical team before replacing one bearing with another of different origin.
If you need a quote for an NSK D series tapered roller bearing, write to us on WhatsApp with the part number or size you require. At MR Accesorios Industriales we will quote you shortly and indicate the compatible alternative if necessary. We are your trusted partner in bearings and power transmission.
Dimensions
Boundary dimensions of the basic designation 30303 per ISO 355: 17 x 47 x 15.25 mm (d x D x T).
- Bore
- 17mm
- Outside diameter (D)
- 47mm
- Total width (T)
- 15.25mm
Same size in SKF and other brands
Pages from other brands with the basic designation 30303: 17 x 47 x 15.25 mm (d x D x T) per ISO 355.
They share the boundary dimensions set by ISO 355, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.
Frequently Asked Questions
- What are the dimensions of the NSK 30303 D bearing?
- The NSK 30303 D bearing has a 17 mm bore, a 47 mm outside diameter and a 15.25 mm total width (17 x 47 x 15.25 mm). These are the standardised boundary dimensions (ISO 355) of the basic designation 30303.
- What does the D suffix mean in NSK bearings?
- The D suffix indicates a specific design feature within the series, such as a cage design or a particular contact angle. To know exactly what it means for your application, consult us with the full part number.
- How do I choose the right tapered roller bearing?
- You should consider radial and axial loads, speed, temperature, and available space. The type of mounting and lubrication is also key. Our technical team can advise you based on your equipment.
- Are NSK bearings interchangeable with other brands?
- They can be interchangeable if dimensions and load capacity match, but always verify tolerances and design. If you send us another brand's part number, we will indicate the NSK equivalent or compatible alternative.