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Spherical plain bearing SKF SIR 25 ES
- Manufacturer Part Number
- SIR 25 ES
- Brand
- SKFOfficial brand
- Category
- Bearings
- Subcategory
- Spherical plain bearings and rod ends
Other brands in this category
- FAG
- NTN
- TIMKEN
Ask us about alternatives. Equivalence is verified for each reference and application.
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Request your quote via WhatsApp or email, with the quantity and time frame you need.
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Description
SKF SIR 25 ES is a spherical plain bearing reference, within Bearings. Request a quote for SIR 25 ES via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
SKF SIR ES radial rod ends are spherical rod ends with female thread, designed to transmit radial loads and allow oscillating movements and misalignment. They are used in hydraulic cylinders, steering, suspension and articulation mechanisms. MR Accesorios Industriales carries them as official brand and advises you on choosing the correct size for your application.
The SIR ES designation is read as follows: SIR identifies the series of radial rod ends with female thread; ES indicates the design with steel cage, lubrication and standard sealing. The examples SIR 20 ES, SIR 25 ES, SIR 30 ES, SIR 35 ES, SIR 40 ES, SIR 50 ES, SIR 60 ES and SIR 70 ES show the number corresponding to the thread diameter and the rod end size. The higher the number, the greater the load capacity and outer dimensions. Consult us if you need to confirm the equivalent to your current code.
These rod ends are used in hydraulic and pneumatic cylinders, steering systems, suspension, agricultural machinery, road equipment, cranes and conveyors. In Argentina they are common in combine harvesters, seeders, trailers and earthmoving equipment, where dusty conditions and variable loads demand a robust rod end. They also appear in automation and test benches that require controlled oscillation.
To select an SIR ES, check the thread diameter, the head width and the permissible oscillation angle. The sealing of the ES series protects against contaminants; if the environment is very dirty, consider additional seals. Mounting must ensure alignment between the shafts and avoid parasitic bending loads. Periodic lubrication with lithium grease is key to service life, especially in applications with continuous movement or high frequency.
SKF SIR ES rod ends are interchangeable with other brands that follow the same dimensional designation, such as the GE series or similar ones from European and Asian manufacturers. Interchangeability depends on tolerances and the rod end material, so it is advisable to compare data sheets before replacing. At MR Accesorios Industriales we can guide you on equivalents without compromising the performance of the assembly.
If you already have the code for your rod end, send it via WhatsApp to MR Accesorios Industriales and we will quote you for the SIR ES you need. We can also advise you if you are unsure between sizes or if you are looking for an alternative for your application. More than 80 years of experience back us as an industrial supplier in Argentina.
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 abbreviation SIR ES mean on an SKF rod end?
- SIR identifies the series of radial rod ends with female thread, and ES indicates the design with steel cage and standard sealing. The number that follows (for example, 20, 25, 30) corresponds to the size and thread diameter. It is SKF's own nomenclature for this family of rod ends.
- How do I choose the correct size of SIR ES rod end?
- You need to know the thread diameter, the head width and the required oscillation angle. Radial load and environmental conditions also play a role. If you have the original code or the housing dimensions, send us that data and we will help you select the right model.
- Are SKF SIR ES rod ends interchangeable with other brands?
- Yes, they are usually interchangeable with other brands that respect the same standardized dimensions, such as the equivalent GE series. However, differences in tolerances, material and sealing can affect performance. It is always advisable to verify the data sheet of both options before replacing.

