Product page
Inner ring SKF IR 40X50X20 IS1
- Manufacturer Part Number
- IR 40X50X20 IS1
- Brand
- SKFOfficial brand
- Category
- Bearings
- Subcategory
- Inner ring
Other brands in this category
- FAG
- NTN
- TIMKEN
Ask us about alternatives. Equivalence is verified for each reference and application.
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Description
SKF IR 40X50X20 IS1 is a inner ring reference, within Bearings. Request a quote for IR 40X50X20 IS1 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The SKF inner ring of the IR/IS series is a precision component that is mounted on the shaft to provide a suitable raceway in needle roller bearings, especially when the shaft cannot be ground. It is used in applications where a hard and wear-resistant surface is required. MR Accesorios Industriales distributes this line of SKF inner rings for the Argentine industrial market.
The designation of these rings is interpreted as follows: IR indicates that it is an inner ring, followed by the dimensions in millimeters: bore diameter, outside diameter and width, separated by an X. The suffix IS refers to a design variant, generally related to the type of lubrication or groove. For example, IR 40X50X20 IS1 corresponds to a ring with a 40 mm bore diameter, 50 mm outside diameter and 20 mm width, with the IS1 variant. Similarly, IR 50X55X20 IS1 has a 50 mm bore, 55 mm outside diameter and 20 mm width. These codes allow quick identification of the ring's dimensions and characteristics.
These inner rings are used in a wide variety of industrial applications, such as machine tools, transmission equipment, pumps, compressors, and in the automotive industry. In Argentina, they are common in the maintenance of production equipment, especially in sectors such as metalworking, food and petrochemical. By providing a hard and precise raceway, they allow needle roller bearings to reach their maximum load capacity and service life, even when the shaft does not have the required hardness or surface finish.
To select the appropriate inner ring, it is essential to verify the dimensions of the shaft and the needle roller bearing with which it will be combined. The ring must have the same bore diameter as the shaft and the outside diameter must match the bore diameter of the bearing. In addition, the width of the ring must be considered based on the bearing width and the available space. During assembly, it is important to ensure correct alignment and avoid impacts that could damage the raceway surface. Proper lubrication and sealing help extend the service life of the assembly.
Regarding equivalents and interchangeability, SKF inner rings of the IR/IS series can be replaced by products from other manufacturers that follow the same standardized dimensions. However, it is advisable to verify tolerances and heat treatment, as they affect performance. MR Accesorios Industriales offers genuine SKF inner rings, guaranteeing quality and compatibility with needle roller bearings of the same brand. For critical applications, always consult the technical specifications.
If you need a quote for an SKF inner ring or any other component for your equipment, do not hesitate to contact us. At MR Accesorios Industriales we have more than 80 years of experience in the field and we advise you so that you choose the correct part. Send us the part number by WhatsApp and we will respond shortly.
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 IS1 suffix mean in SKF inner rings?
- The IS1 suffix indicates a specific design variant, which may include a lubrication groove or a particular surface treatment. To know the exact characteristics, it is advisable to consult the product data sheet or contact our team.
- Can I use an SKF inner ring with a needle roller bearing from another brand?
- Yes, as long as the dimensions and tolerances are compatible. SKF inner rings follow international standards, so they are usually interchangeable with bearings from other brands that meet the same specifications. Always verify the diameters and width.
- How do I know which inner ring I need for my application?
- You must measure the shaft diameter and the bore diameter of the needle roller bearing. The inner ring must have a bore diameter equal to that of the shaft and an outside diameter that matches the bearing bore. Also consider the bearing width. If you have doubts, send us the measurements and we will advise you.

