Overview
NSK ball bearing units combine a bearing, housing, and sealing components into a standardized form used in the key parts of equipment. They are versatile and easy to use.
Using a ball bearing unit simplifies the surrounding structure and makes mounting and maintenance more efficient. As they provide the proper alignment, bearing units help prevent moment loads caused by mounting error. Bearing units can also be easily mounted on the machine base or side walls so they can be used in all kinds of places, including frame structures.
With their impressive features, applications for bearing units are expanding daily, yet NSK's wide range of ball bearing units meets performance needs across operating conditions.
Product List
Pillow Blocks
Pillow Blocks
Pillow blocks (plummer blocks) are the most common type of bearing unit. The complete units feature a bearing mounted in a simple, rigid housing. They are extensively used in a range of transmission equipment and general machinery.
Features
- Customizable bearing housing materials
In addition to gray cast iron standard materials, spheroidal graphite iron (ductile cast iron), general rolled steel, and stainless steel options are available. - Various housing types
Choose from a wide assortment of housing shapes and sizes.
Applications
- Roll support
- Carrier/Conveyance Equipment
Square Flanged Units
Square Flanged Units
These bearing housings have a square flange which can be easily attached to a machine with four bolts.
With a simple mounting face, square flanged units are widely used.
Features
- Customizable bearing housing materials
In addition to gray cast iron standard materials, spheroidal graphite iron (ductile cast iron), general rolled steel, and stainless steel options are available. - Various housing types
Choose from a wide assortment of housing shapes and sizes.
Applications
- Roll support
- Carrier/Conveyance Equipment
Oval Flanged Units
Oval Flanged Units
The bearing housing features a diamond-shaped flange for easy mounting to the machine base or side wall with two bolts. They are suited in applications where mounting space and the distance between shafts is small. Often, the spacing between bolt holes is equal to the diagonal positioning of square-flange types.
Features
- Customizable bearing housing materials
In addition to gray cast iron standard materials, spheroidal graphite iron (ductile cast iron), general rolled steel, and stainless steel options are available. - Various housing types
Choose from a wide assortment of housing shapes and sizes.
Applications
- Roll support
- Carrier/Conveyance Equipment
Ball Bearings: Set Screw Type
Ball Bearings: Set Screw Type
Set screw ball bearings are specially designed for bearing units and come in a range of models depending on the mounting. For more details, see NSK's Ball Bearing Units catalog and handbook.
Features
- Mounting methods that suit your application
Choose from set screw, adapter (tapered bore of inner ring), eccentric locking collar, and fitting methods to mount the bearing. - A range of designs for the outside diameter of the outer ring
Bearings come in a range of types with spherical or straight outer ring outside diameters.
Applications
- Proven performance
The same high-quality bearings are used in NSK ball bearing units.
FAQ
- I'm looking for replacement bearings for an existing bearing unit. How do I decide which product is appropriate?
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- Please see the comparison tables listed in our catalog for which NSK products correspond to other manufacturer's units.
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