Pillow block bearings are mounted bearings commonly used to support rotating shafts in various industrial applications. As a leading manufacturer of high-quality pillow block bearings, NSAR Bearings offers a wide range of sizes, materials, and designs to meet the needs of your application.
In this blog post, we’ll provide an overview of the different sizes and types of pillow block bearings we offer and how you can select the right product for your specific requirements.
Pillow Block Bearing Sizes
Pillow block bearings are available in many standard sizes based on the shaft diameter they are designed to support. Some of the most common sizes we supply include:
1/2 inch shaft diameter
5/8 inch shaft diameter
3/4 inch shaft diameter
1 inch shaft diameter
1-1/4 inch shaft diameter
1-1/2 inch shaft diameter
2 inch shaft diameter
In addition to standard sizes, NSAR Bearings can manufacture custom pillow block bearings to fit non-standard shaft diameters when required.
When selecting the proper size pillow block, it’s important to measure the shaft diameter accurately and choose a bearing with the appropriate internal clearance to avoid issues with friction and premature wear. Our engineering team can provide recommendations to assist with proper sizing.
Pillow Block Bearing Materials
Pillow block bearings consist of an exterior housing that holds the internal bearing mechanism with rolling elements that support the shaft. At NSAR Bearings, we offer pillow blocks constructed from three distinct materials:
Cast Iron Pillow Blocks
Our cast iron pillow block bearings feature a sturdy cast iron housing and high quality GCr15 grade chrome steel internal bearings. Cast iron provides excellent vibration dampening capabilities along with high load capacities.
Stainless Steel Pillow Blocks
For superior corrosion resistance, we supply stainless steel 304 pillow blocks. The sleek stainless housing contains hardened 420 or 440C stainless steel internal bearings. With proper maintenance, these provide exceptional performance in wet environments.
Plastic Pillow Blocks
Our lightweight, low-cost plastic pillow block option has a PBT polyester housing paired with stainless steel 420 or 440C internal bearings. This design works well in general purpose applications like food processing, packaging equipment, and light-duty conveyors.
Sealing and Lubrication Options
To maximize pillow block bearing life and reliability, NSAR Bearings offers various integrated sealing configurations to keep contaminants out and lubricate in. Some available options include no seal, snap ring seals, rubber contact seals, and heavy-duty taconite seals.
We also provide a choice of grease fitting locations allowing you to easily lubricate the internal bearings as part of routine maintenance. Choosing optimal seals and lubrication methods prevents premature wear – talk to our engineering experts for application-specific recommendations.
Specialty Pillow Block Styles
In addition to our standard product line, we have the in-house engineering capabilities to provide custom pillow block bearing solutions for challenging application requirements. Some examples of specialty products we can manufacture include:
Multi-position pillow blocks – Allow shaft mounting from various angles
Large bore units – For supporting extremely heavy loads
High temperature blocks – Rated for over 250°C heat resistance
Corrosion resistant blocks – Stainless steel housing, shafts, and bolts
Motor mount blocks – Designed to attach a motor to a support base
With our diverse manufacturing skills and production capacity, the team at NSAR Bearings can engineer pillow blocks tailored to your exact specifications.
Brands and Customization
All the pillow block bearings we offer are manufactured under our quality controlled NASR brand name. We certify our products meet or exceed established industry standards for mounted bearings.
In addition, our engineering department welcomes the opportunity to produce OEM custom bearings branded for your company. We have extensive experience in cost-effectively optimizing designs to meet specialized requirements related to dimensional fit, environmental resistance, noise levels, and more. Talk to our expert application engineers today to explore customization options for your next project.
With capacities up to over 100 tons dynamic load rating, we provide reliable pillow block bearings suited for demanding industrial applications like:
Agricultural equipment
Construction machinery
Food & beverage processing
Packaging systems
Conveyors
Material handling
Trust NSAR Bearings as your one-stop shop for any size pillow block bearing needs. We maintain a huge inventory of standard catalog items ready to ship immediately with custom manufacturing also available. Contact us today to learn how our high-quality, competitively priced pillow block bearings can benefit your specific application!