Two Bolt Pillow Blocks

Pillow block roller bearing units (also known as plumber block bearings) are mounted bearings and are designed for radial loads acting in the direction of the support surface (as opposed to a 2-bolt or 4-bolt flange unit).

Bearings Catalog

Check out our online product catalog with more than 10,000 products with full specifications & 3D CAD Models available for download - all free of charge!

View Catalog

Components of a Typical Pillow Block Bearing

Standard pillow blocks from AST Bearings are made of the following components:

Cast Iron Housing
Grease Nipple
Outer Ring
Steel Balls
Steel Retainer/Cage
Rubber Seals
Slinger
Wide Inner Ring
Set Screws

Other variances are available upon special request such as: type of locking mechanism, self-aligning units, stainless, thermoplastic, and nickel plated mounts, mounts especially designed for HVAC applications, Ceramic Balls (Hybrid Bearings), dust resistant units, heavy duty units and more.

Standard Pillow Block Bearings from AST Bearings

Two Bolt Pillow Blocks - Normal Duty, Wide Inner Ring, Standard Shaft (high) Heights, with Set Screws - Inch and Metric - "UCP" is our product designation for this series. It is often cross referenced with the following:

Sealmaster "NP Series"
Dodge "SC Series"
Fafnir "YAS Series"

The UCP Series above is what is featured in our interactive online catalog. However, many other series in inch and metric dimensions are available including:

NAP Series (a.k.a. VPE-2 Series, RAS Series, and SXRB Series) - Normal Duty, Wide Inner Ring, with eccentric locking collar.
NAPK Series (a.k.a. VPLE-2 Series, RAK Series, and SXRB Series) - Normal Duty, Low Shaft Height, Wide Inner Ring, with eccentric locking collar.
SL Series (a.k.a. NPL Series, VAK Series, and SCB Series) - Normal Duty, Low Shaft Height, Wide Inner Ring with set screws.
UCP-X Series (a.k.a. MP Series, VPS-3 Series, and SCM-PB Series) - Medium Duty, with set screws.
UCP-3 Series - Heavy Duty, with set screws.
UCPA-2 Series (a.k.a. "International Style" or UCUP Series, UCPA Series, and CNP Series) - Normal Duty, Tapped Base, with set screws.
UCPAN-2 Series (a.k.a. "Domestic Style") - Normal Duty, Tapped Base, with set screws.
UCPH-2 Series (a.k.a. UCPH Series and UCHP Series) Normal Duty, with set screws.
ALP-2 Series (a.k.a. VPE-1 Series, MS Series, and AELPL Series) - Light Duty, eccentric locking collar.
BLP-2 Series (a.k.a. UBS-1 Series, UBLP Series) - Light Duty, with set screws.

AST Bearings is proudly presenting our new certificates for both the NJ and CA locations: AST Bearings’ ISO 9001:2015 Certificates

To learn more about what the ISO 9001 standard is, the differences between the 2015 and 2008 versions, and how AST verifies customer satisfaction: Learn About AST Bearings’ certification to ISO 9001:2015

Need Assistance Selecting the Proper Two Bolt Pillow Blocks?

If you need help in selecting the best products for your particular application, please remember that design engineering and application assistance are available from AST as part of our value-added services designed to make your job easier.

Value added services