Four Bolt Flange Units

We carry a complete selection of high-quality four-bolt flange units and are always updating and adding new sizes and styles.

Food-processing factories need flange units. Without them, they couldn’t help to keep all those New York diners happy. #ReliaBALLBearings

Need help in selecting the best products for your particular application? We’re here to make your job easier.

We offer UPS same-day shipping on the best four-bolt flange units and a variety of other products. Get 24-hour emergency customer care: (718) 692-3032.



Four-bolt flange units are available in a variety of configurations. Although many look similar to each other, it’s important to get the correct configuration as there are small physical differences that can’t be ignored. We carry a variety of heavy-, medium- and light-duty flanges.

Our units feature:

  • Rugged cast iron housing
  • Rock solid base
  • Wide inner ring bearing
  • Dual heavy-duty contact-type seals
  • Steel-plate slingers on sides for dust exclusion
  • Full self-alignment, generating less friction than other rolling bearing types
  • Lubrication fitting for adding grease
  • Set screw units with two set screws, 120° apart in the inner ring
  • Locking for one-directional applications in units with eccentric locking collars

AMI Bearings - Four Bolt Flange  FYH Bearings Four Bolt Flange SKF Four Bolt Flange