Product page
Pillow block bearing LINK-BELT PA331
- Manufacturer Part Number
- PA331
- Brand
- LINK-BELTOfficial brand
- Category
- Bearing housings
- Subcategory
- Bearing housings
- Series
- 300
![]()
We respond promptly.
Request your quote via WhatsApp or email, with the quantity and time frame you need.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
Description
LINK-BELT PA331 is a pillow block bearing reference, within Bearing housings. Request a quote for PA331 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
LINK-BELT PA series 300 pillow block housings are mounted bearing units used to support rotating shafts in industrial equipment. They are mounted on a flat base and secured with bolts, and their design allows housing the bearing and sealing it against contamination. They are used in conveyors, mixers, pumps and fans, among other applications. At MR Accesorios Industriales we supply them as official brand and advise you to choose the correct code according to your shaft and load.
The designation of these housings is read as PA followed by three digits. The 300 series ranges from PA319 to PA344, and the numbers indicate the housing size and the shaft diameter each unit accepts. For example, PA319 and PA323 correspond to the smaller sizes of the series, while PA339, PA343 and PA344 cover the larger ones. The full code identifies the part unambiguously: with that data you can order the exact housing or its equivalent.
In Argentine industry, these housings appear in belt and chain conveyors, bucket elevators, mixers, agitators, centrifugal pumps and fans. They are also found in milling equipment, screens and machines for the food industry. Being pillow block units, they simplify mounting on metal structures or concrete bases, and allow aligning the shaft with controlled tolerances. They are a common solution when robust and easy-to-maintain support is required in continuous production plants.
To select the correct housing, take into account the shaft diameter, the radial and axial load it must support, and the environmental conditions. Sealing is key: in environments with dust, water or frequent washdowns, additional protection is advisable. Lubrication must be the one indicated for the housed bearing, and mounting requires a rigid and aligned base to avoid parasitic stresses. If the equipment operates with vibrations, check the bolt tightening and internal clearance. Careful mounting extends the service life of the assembly.
LINK-BELT PA series housings have equivalences with other mounted bearing lines from manufacturers such as SKF, NSK, Timken or Dodge, although each brand uses its own nomenclature. Interchangeability is not automatic: mounting dimensions, shaft diameter and load capacity must be compared. At MR Accesorios Industriales we indicate the compatible alternative if you need to replace an existing unit. Send us the PA code on the housing or the shaft measurement and we will quote the option that best suits your equipment.
MR Accesorios Industriales supplies the LINK-BELT line as official brand and has more than 80 years of experience in the field. If you cannot find the code you are looking for, write to us via WhatsApp with the model or measurement and we will quote it promptly. We can also advise you on mounting, lubrication and associated spare parts so that your equipment keeps running without setbacks.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
- Eje o agujero
- 1 15/16 in
Frequently Asked Questions
- How do I identify the PA housing I need?
- The PA code followed by three digits identifies the size. Compare the number engraved on the old housing or measure the shaft diameter and the distance between bolts. With that data we will quote the exact replacement.
- Are PA housings suitable for dusty or humid environments?
- Yes, but it is advisable to choose the appropriate sealing. The PA series accepts additional protections depending on the application. Tell us the conditions of your plant and we will recommend the most suitable configuration to extend bearing life.
- Can I replace a housing from another brand with a LINK-BELT PA one?
- In many cases yes, but mounting dimensions, shaft diameter and load capacity must be verified. Not all brands share measurements. Send us the original code and we will indicate the LINK-BELT equivalence that best fits.

