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Y-bearing unit SKF SY 20 FM
- Manufacturer Part Number
- SY 20 FM
- Brand
- SKFOfficial brand
- Category
- Bearing housings
- Subcategory
- Y-bearing unit
Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
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Description
SKF SY 20 FM is a y-bearing unit reference, within Bearing housings. Request a quote for SY 20 FM via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The SKF SY bearing housing with insert bearing is an assembled unit that combines a cast iron housing unit with an insert ball bearing, ready to mount on rotating shafts. It is used to guide and support shafts in transmission, conveying and process equipment where a compact solution with easy alignment is required. Its design allows the bearing to be fixed to the shaft with set screws and the housing to be mounted directly onto the structure.
The designation SY …. FM reads as follows: SY identifies the Y-bearing housing series with insert bearing; the number that follows indicates the shaft diameter, in inches or millimeters depending on the case, and FM indicates a construction variant with specific sealing and fixing characteristics. For example, SY 1. FM corresponds to a 1 inch shaft, SY 1.1/2 FM to 1 1/2 inches, SY 17 FM to 17 mm and SY 20 FM to 20 mm. Suffixes may vary depending on the type of fixing or seal, so it is advisable to verify the complete part number.
These housings are used in a wide variety of industrial applications: belt conveyors, bucket elevators, mixers, fans, centrifugal pumps, machines for the food industry and agricultural equipment. In Argentina, they are common in processing plants, flour mills, animal feed plants and material handling systems. Their robust construction and their ability to withstand moderate radial and axial loads make them suitable for environments with dust, humidity or frequent cleaning.
To correctly select an SY housing, take into account the shaft diameter, the type of load (radial, axial or combined), the rotation speed and the environmental conditions. Sealing is key: insert bearings usually include single or double lip seals that protect against contaminants. Internal clearance and lubrication must be suitable for the application; in humid environments or with washdowns, choose versions with reinforced seals. During mounting, ensure correct alignment between housings and avoid striking the bearing when inserting it onto the shaft.
Regarding equivalences and interchangeability, SKF SY housings can be replaced by units from other brands that follow the same dimensional standard. However, not all insert bearings are interchangeable with each other: variations in the fixing system, sealing or housing tolerance can affect performance. Always verify the complete part number and the critical dimensions before replacing one housing with another. If you have doubts, ask us with the exact designation and we will advise you.
To request a quote or ask about an SKF SY bearing housing with insert bearing, send us the complete part number by WhatsApp at MR Accesorios Industriales. We have more than 80 years of experience in the distribution of industrial components and we can help you find the right unit for your equipment. Write to us and we will reply shortly.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
- Código universal
- UCP 204
Frequently Asked Questions
- What does the FM suffix mean in an SY housing?
- FM indicates a construction variant of the housing, generally associated with the type of sealing or the fixing system of the insert bearing. It does not change the main dimensions, but it does change performance against contaminants. Always verify the complete part number to ensure compatibility.
- How do I choose the correct diameter for my shaft?
- The number in the designation indicates the shaft diameter: for example, SY 1. FM is for a 1 inch shaft and SY 20 FM for 20 mm. Measure the shaft with a caliper and select the housing that matches exactly. If the shaft is worn, consider a prior repair.
- Can insert bearings from different brands be interchanged?
- Not always. Although the outer dimensions may match, the fixing systems, sealing and tolerances vary between manufacturers. For a safe replacement, compare the technical specifications and consult a specialist before replacing a component.

