
LINK-BELT PU3K31 pillow block bearing
- Brand
- LINK-BELT
- Category
- Bearing housings
- Subcategory
- Bearing housings
- Series
- 300
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Tell us the quantity you need and request a quote by WhatsApp or email.
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Description
LINK-BELT PU3K31 belongs to pillow block bearing, 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 PU3K31 and any equivalents.
When a rotating shaft needs a solid anchor to a flat base, the Link-Belt PU3K series pillow block is one of the mounted bearing units maintenance teams turn to. It is built for power transmission equipment that calls for rigid support and alignment that stays put.
Reading the code helps you order the right unit. PU tells you it is a pillow block, the 3 places it in the 300 series, and the K shows how it mounts. The digits that follow set the size, so PU3K27, PU3K31 and PU3K35 each fit a different shaft capacity. With the shaft diameter and the load picture in hand, the code narrows the choice quickly.
In the field these units show up on conveyors, mills, mixers, pumps and fans, and in mining, cement, food processing and water treatment equipment. Because the housing bolts down to steelwork or a concrete base, installation is straightforward, and the design absorbs a certain amount of initial misalignment. Plants that value simple upkeep and fast replacement tend to keep them in service.
Selection comes down to shaft diameter, radial and axial load, and where the unit will run. Look at the sealing arrangement, since seals are what keep dust and moisture away from the bearing. Lubrication has to match the duty, and mounting has to be aligned well enough to avoid parasitic stresses. Tightening and fastening should follow the manufacturer's instructions.
Equivalent mounted bearing units from other brands can often be swapped in when dimensions line up. To get a quote, send the complete code along with your operating conditions, and we can point you to the compatible alternative.
MR Industrial Accessories LLC supports customers across the United States and in several Latin American countries. Send the part number by WhatsApp or email and the team replies promptly, helping with equivalents and selection. Split plummer block housings can also be manufactured to your requirements.
Dimensions
- Bore
- 1 15/16 in
Frequently asked questions
- How do I read a Link-Belt PU3K part number?
- PU stands for pillow block, 3 is the 300 series, and K is the mounting configuration. The trailing number gives the size, which corresponds to a specific shaft diameter, so PU3K27 and PU3K31 are not the same fit.
- What should I check before selecting a pillow block?
- Start with shaft diameter, then radial and axial loads, then the environment. Confirm the seal type and the lubrication the duty requires. Send those details and we can match the PU3K model to your equipment.
- Can Link-Belt pillow blocks be replaced by another brand?
- Mounted bearing units with equivalent dimensions are commonly interchangeable across brands. Share the full code and your operating conditions when you request a quote, and we will indicate the compatible option.

