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Inner ring NSK IR-2020
- Manufacturer Part Number
- IR-2020
- Brand
- NSKBrand we market
- Category
- Bearings
- Subcategory
- Inner ring
- Series
- IR
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Description
NSK IR-2020 is a inner ring reference, within Bearings. Request a quote for IR-2020 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The NSK IR series inner ring is a precision component used as the inner raceway in needle roller bearings. It is mounted on the shaft and provides a hard, ground surface for the rollers, enabling compact, high load capacity arrangements. It is a key part when the shaft does not have the hardness or finish suitable to act directly as a raceway. MR Accesorios Industriales sells this series in Buenos Aires, Argentina, and advises you on choosing the correct part number for your application.
The IR series designation is read as the letters IR followed by a number indicating the bore diameter and width, and it may carry the -1 suffix when it corresponds to a variant with modified dimensions. For example, IR-68 identifies a ring with a specific bore diameter and width, while IR-68-1 is the version with a different width. Likewise, IR-88, IR-128, IR-612, IR-612-1, IR-812 and IR-1012 cover different combinations of diameter and width. Let us know the exact part number you need and we'll quote it.
These rings are used in needle roller bearings and roller assemblies that require a removable inner raceway. They are common in applications where radial space is limited and high load capacity is needed, such as gearboxes, pumps, compressors, machine tools and mining equipment. In Argentina, they are found in the automotive sector, the metalworking industry and agricultural machinery manufacturing, among others. MR Accesorios Industriales sells them to supply both repair shops and production lines.
To select the right inner ring, take into account the shaft diameter, the bearing width and the type of load. The IR series is manufactured with controlled tolerances and ground surfaces to ensure a correct fit and long service life. It is essential to verify alignment between the ring and the shaft, as well as proper lubrication, to avoid premature wear. If the shaft is worn, the inner ring allows functionality to be restored without replacing the entire shaft.
NSK IR series inner rings can be interchanged with those of other brands that follow the same dimensional designation, although it is always advisable to confirm tolerances and surface treatment. Equivalent parts from different manufacturers exist on the market, but dimensions and quality can vary. So if you have a part number from another brand or an unidentified part, send us the details and we'll tell you the compatible alternative that best suits your equipment.
If you need an NSK IR series inner ring, write to us on WhatsApp with the part number or the dimensions you are looking for. At MR Accesorios Industriales we quote the exact reference and reply shortly. We can also advise you if you have doubts about the designation or the mounting. With more than 80 years of experience in the field, we are here to help you find the part your machine needs.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- What does the -1 suffix mean on an NSK IR series inner ring?
- The -1 suffix indicates a dimensional variant within the series, generally a different width from the base reference. For example, IR-68-1 has a different width from IR-68. Always verify the full part number to ensure compatibility with your bearing.
- How do I know which inner ring I need for my needle roller bearing?
- You need to know the shaft diameter, the bearing width and the part number of the outer bearing. With that data, we'll tell you the right inner ring. If you have the part number of the old part, send it to us and we'll quote the exact reference.
- Are NSK IR series inner rings interchangeable with other brands?
- They can be interchangeable if dimensions and tolerances match, but not all brands manufacture to the same standards. If you bring us a part number from another brand, we'll tell you the compatible alternative that best suits your equipment.

