Pillow Block Ball Bearing Units
Pillow blocks can refer to a variety of bearing styles such as single row ball bearings, double row ball bearings, spherical roller bearings, taper roller bearings, etc. A unit is typically a reference for a 1-piece housing as opposed to a split housing. For simplicity, this article will focus on single row ball bearing units.
A basic pillow block bearing unit is typically an insert bearing which is based on a sealed deep groove ball bearing and a one piece housing.” Joshua Goldman, Applications Engineer for SKF USA says.
Pillow block bearing units are designed for quick, easy and safe mounting. They are sealed and pre-greased at the factory making them ready-to-use. Multiple sealing solutions and greases (including food grade greases) are available for specific application requirements. Some variants may be virtually maintenance-free depending on the application operating conditions. Because of the sphered outer ring interface, they can accommodate moderate initial misalignment, but normally do not permit axial displacement. These units offer a simple, cost-effective solution that can provide a number of benefits.
![2.5 Inch | 63.5 Millimeter x 3.5 Inch | 88.9 Millimeter x 3.125 Inch | 79.38 Millimeter Sealmaster MSFPD-40 Pillow Block Ball Bearing Units](https://m.lqxgb.com/uploaded_images/d62095-2-5-inch-63-5-millimeter-x-3-5-inch-88-9-millimeter-x-3-125-inch-79-38-millimeter-sealmaster-msfpd-40-pillow-block-ball-bearing-units.jpg)
![2.4375 in x 7-1/8 to 8-7/8 in x 3-1/2 in Sealmaster EMPD 39 Pillow Block Ball Bearing Units](https://m.lqxgb.com/uploaded_images/d62091-2-4375-in-x-7-1-x2f-8-to-8-7-x2f-8-in-x-3-1-x2f-2-in-sealmaster-empd-39-pillow-block-ball-bearing-units.jpg)
![1.938 Inch | 49.225 Millimeter x 2.031 Inch | 51.59 Millimeter x 2.188 Inch | 55.575 Millimeter Sealmaster NPL-31C Pillow Block Ball Bearing Units](https://m.lqxgb.com/uploaded_images/d62090-1-938-inch-49-225-millimeter-x-2-031-inch-51-59-millimeter-x-2-188-inch-55-575-millimeter-sealmaster-npl-31c-pillow-block-ball-bearing-units.jpg)
![1.875 Inch | 47.625 Millimeter x 2.031 Inch | 51.59 Millimeter x 2.75 Inch | 69.85 Millimeter Sealmaster SP-30 Pillow Block Ball Bearing Units](https://m.lqxgb.com/uploaded_images/d62095-1-875-inch-47-625-millimeter-x-2-031-inch-51-59-millimeter-x-2-75-inch-69-85-millimeter-sealmaster-sp-30-pillow-block-ball-bearing-units.jpg)
![1.5 Inch | 38.1 Millimeter x 1.938 Inch | 49.225 Millimeter x 2.313 Inch | 58.75 Millimeter Sealmaster EMP-24T Pillow Block Ball Bearing Units](https://m.lqxgb.com/uploaded_images/d62090-1-5-inch-38-1-millimeter-x-1-938-inch-49-225-millimeter-x-2-313-inch-58-75-millimeter-sealmaster-emp-24t-pillow-block-ball-bearing-units.jpg)
![1.688 Inch | 42.875 Millimeter x 2.375 Inch | 60.325 Millimeter x 2.375 Inch | 60.325 Millimeter Sealmaster SPD-27 Pillow Block Ball Bearing Units](https://m.lqxgb.com/uploaded_images/d62098-1-688-inch-42-875-millimeter-x-2-375-inch-60-325-millimeter-x-2-375-inch-60-325-millimeter-sealmaster-spd-27-pillow-block-ball-bearing-units.jpg)
![2.188 Inch | 55.575 Millimeter x 2.188 Inch | 55.575 Millimeter x 3.125 Inch | 79.38 Millimeter Sealmaster SP-35C Pillow Block Ball Bearing Units](https://m.lqxgb.com/uploaded_images/d62092-2-188-inch-55-575-millimeter-x-2-188-inch-55-575-millimeter-x-3-125-inch-79-38-millimeter-sealmaster-sp-35c-pillow-block-ball-bearing-units.jpg)