Pillow block bearings were first manufactured in Japan for shipbuilding industry in the beginning of the 20th century. Later the production of the bearing units began in Europe and North America.
Today, this type of bearing is produced by all major manufacturers of bearing products. Every major industry is using these bearings.
A pillow block may contain a bearing with one of several types of rolling elements, including ball, cylindrical roller, spherical roller, tapered roller, or metallic or synthetic bushing. The type of rolling element defines the type of pillow block. These differ from "plummer blocks" which are bearing housings supplied without any bearings and are usually meant for higher load ratings and a separately installed bearing.
There are many types of bearing units. Including but not limited to :
• 2-Bolt Pillow Block
• Tapped Base Pillow Block
• Piloted Flange
• Flange Bracket
• Swivel Flange
• Pressed Steel
• Take-Up Bearings
• Hanger Bearings
• Cylindrical Units
• Split Housing