Product page
Friction bushing SKF PSM 405040 A51
- Manufacturer Part Number
- PSM 405040 A51
- Brand
- SKFOfficial brand
- Category
- Bushings and sleeves
- Subcategory
- Friction bushings
Other brands in this family
- BGL
- EMMAR
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 PSM 405040 A51 is a friction bushing reference, within Bushings and sleeves. Request a quote for PSM 405040 A51 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
SKF friction bushings of the PSM series are self-lubricating sintered bronze bushings, designed to withstand radial loads in oscillating or rotating movements. They are used in a wide variety of industrial equipment, from agricultural machinery to transmission systems, where a compact, low-maintenance solution is required. Their porous construction allows oil impregnation, which reduces friction and wear. MR Accesorios Industriales carries this line as part of its range of power transmission and support components.
The designation of SKF PSM series bushings follows a pattern that combines letters and numbers. For example, PSM 202620 A51 indicates a bushing with a 20 mm inner diameter, 26 mm outer diameter and 20 mm length. The suffix A51 identifies a specific material or tolerance variant. Other examples such as PSM 303825 A51 or PSM 405040 A51 follow the same logic: the first digits correspond to the inner diameter, the next to the outer diameter and the last to the length. This nomenclature facilitates quick selection according to the required dimensions.
These bushings are used in applications where lubrication conditions are limited or maintenance is sporadic. They are common in agricultural machines, earthmoving equipment, conveyors, pumps, fans and clutch systems. In Argentina, they are found in agricultural implements, cranes, elevators and machinery for the food industry. Their ability to work with moderate loads and low or medium speeds makes them versatile for replacing conventional bushings in repairs and maintenance.
To select the appropriate bushing, it is essential to verify the housing and shaft dimensions, as well as the load and operating speed. Assembly must be done carefully, ensuring correct alignment to avoid irregular wear. It is recommended to clean the surfaces and, if necessary, use a mandrel to insert the bushing without damaging it. Initial lubrication with oil compatible with sintered bronze extends service life. In applications with high contamination, evaluate the use of additional seals.
SKF PSM series bushings can be interchanged with equivalent products from other brands, as long as dimensions and material are respected. It is important to compare tolerances and load capacity before substituting. The designation PSM is specific to SKF, but other manufacturers offer sintered bushings with standardized dimensions. For a safe equivalent, it is recommended to consult a specialist and verify the operating conditions.
At MR Accesorios Industriales we carry the SKF line of friction bushings as part of our broad range of industrial components. If you need a replacement or advice to choose the correct bushing, send the part number or dimensions via WhatsApp and we will quote you promptly.
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 PSM designation mean on SKF bushings?
- PSM is SKF's friction bushing series. The numbers that follow indicate the dimensions: inner diameter, outer diameter and length, in millimeters. The alphanumeric suffix identifies material or tolerance variants.
- Do these bushings require additional lubrication?
- They are self-lubricating due to their porous structure impregnated with oil. However, in severe applications lubrication can be added to extend service life. Consult the operating conditions to determine the need.
- Can I replace an SKF PSM bushing with one from another brand?
- Yes, as long as the dimensions and material are equivalent. Verify tolerances and load capacity. To ensure an adequate replacement, it is advisable to consult a specialist or send us the dimensions via WhatsApp.

