SEALMASTER SF-20R flange bearing 4 holes
- Brand
- SEALMASTER
- Category
- Bearing housings
- Subcategory
- Y-bearing unit
- Series
- SF
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Description
SEALMASTER SF-20R belongs to flange bearing 4 holes, part of our Bearing housings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for SF-20R and any equivalents.
A 4-bolt flange mounted bearing from the SEALMASTER SF series, supplied with its insert. The flange bolts to a flat surface and the shaft passes through at a right angle to it. This arrangement suits equipment that calls for a self-aligning, sealed unit that is compact and straightforward to install.
The code tells you what you are looking at. In the SF series, the digits after the letters give the nominal shaft size, while the closing R marks the 4-bolt flange version. So SF-20R and SF-32R are two sizes from the same family. The R does not alter how the unit mounts; it identifies the flange layout inside the series.
You will find these housings on conveyors, belts, elevators, mixers, fans and process lines in food, chemical, cement and aggregate plants. They are common in materials handling equipment and in machines where a sturdy flange unit that can be swapped out easily is an advantage. Fastening to sheet metal or structural steel is simple with the four bolts, and alignment is uncomplicated.
Selection comes down to shaft diameter, the load case (radial, axial or combined) and the environment. How well the insert seals determines its resistance to dust, water or frequent washdowns. At mounting, check that the flange sits flat without distortion, tighten the bolts evenly and confirm shaft alignment. Lubrication and the insert's internal clearance both affect how long the unit lasts.
Flange mounted bearings come from several brands, each with its own nomenclature. Whether one unit substitutes for another depends on flange dimensions, shaft diameter and the insert's locking method. Matching codes alone will not tell you: compare hole spacing, flange diameter and overall height. For a replacement, send the original code and we will point you to the compatible option.
If your equipment runs an SF series 4-bolt flange housing, message us on WhatsApp with the code from the nameplate. We will quote the SEALMASTER reference and help you settle on the right choice for the application, including other variants in the family when the mounting calls for it.
Dimensions
- Bore
- 1 1/4 in
Frequently asked questions
- What does the SF series indicate on a Y-bearing with insert?
- SF denotes a 4-bolt flange mounted bearing. The digits after the letters give the nominal shaft size, and the R suffix identifies the flange configuration. SF-20R and SF-32R, for instance, are two sizes in the same family.
- How do I pick the correct housing for my shaft?
- You need the shaft diameter, the load type and the operating conditions. The insert's sealing and lubrication also come into play. Send us the original equipment code and we will identify the equivalent SEALMASTER reference for a quote.
- Can a housing from another brand be replaced with a SEALMASTER unit?
- Yes, provided the flange dimensions, hole spacing and shaft diameter line up. Interchangeability is not decided by the code alone. Write to us on WhatsApp with the model and we will confirm the compatible alternative.