3-1/2 in Heavy-Duty Set Screw Pillow Block 4-Bolt Piloted Flange Single Unit Insert UCFS318-56 Style Sealed Ball Bearing for Linear Slide Units and Shaft Support Applications

Single 3-1/2 in heavy set screw 4-bolt piloted pillow block
✔️ Sealed ball bearing insert, UCFS318-56, bore 3-1/2 in

This single pillow block unit holds a sealed ball bearing insert to support a 3-1/2 in shaft. Ideal for linear slide units, conveyors, and light to medium machinery where dependable shaft support and easy mounting are needed.

✅ Bore: 3-1/2 in insert (UCFS318-56)
✅ Housing: 4-bolt piloted flange for positive alignment
✅ Locking: heavy set screw style for secure shaft hold
✅ Bearing: sealed ball bearing insert keeps grease in and dust out
✅ Use case: built for linear slide units, conveyor shafts, and general machinery

💡 What is a pillow block bearing used for in linear slide and shaft support applications? A pillow block bearing supports rotating shafts and makes installation and service quick and simple. - Provides stable shaft support and alignment for conveyors, linear slide units, and other machinery. - Sealed ball bearing inserts reduce maintenance by keeping lubrication in and contaminants out. - Consider ceramic or low-friction balls for high-speed, high-temp, or corrosion-prone environments to improve life and performance.