What is roller bearing units?

Roller bearing units are used in many industrial applications due to their versatility and cost-effectiveness.

Roller bearing units are rugged, ready-to-install units that are factory assembled, lubricated and sealed to maximize service life. They consist of a housing, spherical roller bearings, seals and lubricant. They are an excellent alternative to sleeve mounted bearings in split housings due to their simple, secure installation and ease of alignment.

The range includes units in a variety of housing designs, using either the ConCentra or setscrew locking method, and in both metric and imperial sizes.

The patented multi-tapered sleeve evenly clamps the inner ring around the shaft circumference and sets the bearing internal clearance. The ConCentra locking method enables true concentric mounting to the shaft while minimizing the risk of shaft surface damage or wear corrosion. The ConCentra design increases the axial retention strength of the bearing inner ring to the shaft and also facilitates easy disassembly. Some typical applications include: • Plate conveyors • Bucket elevators • Belt conveyors • Chain conveyors • Fans and blowers • Wastewater treatment equipment • Commercial laundry equipment

Roller bearing units offer many of the advantages of the split housing series but with the convenience of just slipping it on the shaft. Running or static misalignment, non-locating or locating assemblies, two- or four-bolt bases, cast iron and a variety of seal options make the roller bearing unit a preferred alternative to the split housing.

Set screw mounted roller bearing unit

Roller bearing units are supplied completely assembled with bearings, seals, and grease. They are ready for installation right out of the box and require no internal adjustment.

Bearings

Roller bearing pillow blocks and flange units are mounted with set screws. Roller bearing pillow blocks and take-up units are ConCentra mounted. Both are based on 22200 series spherical roller bearings. The units are fully assembled and pre-lubricated, and there is no need to adjust the internal bearings during assembly. This saves time and eliminates the risk of bearing contamination during assembly.

Mounting

Set screw mounted roller bearing units slide easily onto the shaft and are locked into place by means of a dual setscrew locking ring. The locking ring maintains pressure on the setscrew, helping to maintain a tight fit with the shaft. For increased holding force, the largest size is designed with two locking rings as shown in the dimension table. Installation is quick and easy.

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