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Cartridge bearing LINK-BELT CU3K39
- Manufacturer Part Number
- CU3K39
- Brand
- LINK-BELTOfficial brand
- Category
- Bearing housings
- Subcategory
- Bearing housings
- Series
- 300
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Description
LINK-BELT CU3K39 is a cartridge bearing reference, within Bearing housings. Request a quote for CU3K39 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
Link-Belt 300 series cartridge blocks are mounted bearing units housed in a cylindrical cartridge and secured inside a machined housing. They are used to guide and support rotating shafts in equipment where the unit is recessed into the structure, with the outer ring supported directly on the bore diameter of the housing. MR Accesorios Industriales supplies this line in Buenos Aires, Argentina.
The 300 series designation is read in blocks: the initial letters identify the unit type and the number following the prefix indicates the shaft size. In the examples CU3K27, CU3K31, CU3K35, CU3K39, CU3K43, CU3K47 and CU3K55, the final number increases in steps and corresponds to the different shaft diameters covered by the series. The K suffix is part of the unit nomenclature and should be quoted in full when ordering a reference, because it identifies the construction variant of the block.
These blocks are used in conveyors, bucket elevators, mixers, mills, pumps and process equipment where the shaft must be supported in a cylindrical housing. In food, cement, mining, aggregate processing and material handling plants in Argentina, the 300 series appears in equipment operating with moderate radial load and requiring quick unit replacement. The cartridge housing allows the assembly to be mounted inside a machined bore without flanges or external fastening bolts.
To select the unit, start from the shaft diameter you need and the housing diameter available on the equipment. Check the type of sealing according to the environment: dust, water or frequent washdown require tighter seals. Check lubrication and internal clearance before mounting, and ensure the housing is aligned with the shaft to avoid stresses on the bearing. An off-center housing shortens the service life of any mounted unit, no matter how robust it is.
Cartridge mounted units are interchanged between manufacturers by shaft number and housing dimensions, not by the commercial code. When requesting a quote, it is advisable to provide the full code of the original unit and the shaft and housing dimensions. MR Accesorios Industriales will indicate the compatible alternative within the line it supplies and, if necessary, the in-house manufacturing option for split plummer block housings.
If you have the code of the unit you are replacing, send it on WhatsApp along with the shaft size and the application. With that, we will quote the corresponding 300 series reference and indicate the compatible alternative. We can also review the complete equipment assembly to suggest the sealing and lubrication suited to the working environment.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
- Eje o agujero
- 2 7/16 in
Frequently Asked Questions
- What does the final number in a 300 series cartridge block measure?
- The final number of the designation identifies the shaft size for which the unit is intended. In the examples CU3K27, CU3K31 and CU3K35, the value increases in steps and corresponds to different shaft diameters. Provide the full code to request a quote for the exact size.
- How do I choose between a cartridge block and a split plummer block housing?
- The cartridge block is mounted inside a machined cylindrical housing and secured by fit. The split plummer block housing is assembled around the shaft and bolted to a base. The choice depends on the equipment design and whether you can disassemble the shaft for mounting.
- What data do I need to request a compatible alternative?
- Provide the code of the original unit, the shaft diameter, the housing diameter and the type of working environment. With that data, we will indicate the equivalent reference from the line we supply and the sealing option suited to your application.

