Twin Linear Ball Bearing Pillow Blocks, open shelled, with a 1.25" ID (inner diameter) of the Precision Plus self-aligning series. The IPPS twin products all come with 2 grease zerk fittings, small holes in the pillow block which are also called lubrication ports. 

• Open shell design for use with rail supported round linear shafts
• Temperature Range: -4/+176°F (-20/+80°C)
• Variant ID Sizes: Available from 1/4" to 2” Inch Series,  8mm to 50mm Metric 
• Interchangeable: Size interchangeable with industry standards and our Simplicity plain linear bearing series
• Low Coefficient of Friction: Ensures smooth operation
• Heat Treated Alloy Steel Shell: Provides durability
• Polymer Cage Resin Retainer: Reduces noise