MOUNTED UNITS & PILLOW BLOCKS

Bower^® Type E

The Bower Type E bearing unit is one-piece sturdy cast iron housing with elongated mounting slots featuring a spherical roller bearing insert that allows for +/- 2 degrees of misalignment. Bower Type E units also feature a set screw locking collar, machined brass retainer, double-lip heavy contact seal with metal shield, and an extended inner ring. Bower Type E units are available in sizes ranging from 1 7/16” to 4 15/16” pillow blocks and either 2-bolt or 4-bolt configurations.

NTN’s Bower Type E units have been proven to provide superior performance in demanding industries such as aggregate, wood processing, mining, cement, steel, water treatment, and construction.

Ultra-Class™ Series

NTN’s Ultra-Class^™ is the original solid base offering in our mounted bearing unit portfolio. As our flagship bearing unit line, it symbolizes our commitment to performance and reliability. Ideal for applications where elements such as dry particle contamination and moisture are of concern, Ultra-Class provides a wealth of features and benefits to address these challenges.

Available in metric and inch sizes, Ultra-Class units are made from heavy-duty, solid-cast housings and robust steel cages for optimal load & shock stability. The Ultra-Class line features pillow blocks, two-bolt and four-bolt flange housings. These units are fully assembled, factory sealed and pre-lubricated for easy installation.

Featuring NTN’s exclusive ball-point set screw design, the Ultra-Class™ black-oxide plated insert provides 120° screw orientation to provide superior alignment and centering compared to typical 90° configurations. The semi-retractable, ball-point mechanism’s excellent tightening torque characteristics allow 7.5x longer set screw retention life vs. cup point set screws, all without damaging to the shaft or mounting surface.

Using a combined elastomeric seal in tandem with NTN’s outer flinger design, each Ultra-Class mounted unit exhibits a fan-like mechanism that keeps particles from getting near the inner ball bearing and raceways, reducing wear and corrosion. Maintenance-free options with solid lubricant and NSF food grade grease are also available.

Heavy-Duty Mounted Unit Series

NTN provides several heavy-duty mounted units designed specifically to accommodate the rigors of applications within construction, mining, and other large-scale equipment applications. NTN’s SAF (inch dimensions) and SNC (metric dimensions) series are two-part bearing housings offering a heavy-duty solution that simplifies mounting and maintenance of the units. Combined with precision-made, self-aligning roller bearings, these units offer significant benefits in terms of service life and running behavior. With a variety of sealing systems available, the two-part bearing-housing setup provides a versatile, modular approach to mounted-unit design, offering technically and economically viable solutions for almost any application. Complete units are provided with all necessary hardware for installation and maintenance, providing you with an out-of-the-box solution that minimizes downtime and is backed by NTN’s commitment to quality.

When sealing is paramount in heavy-duty applications, NTN also offers our SPAW/SPW/SFCW line of spherical roller bearing units. Designed and tested to provide superior performance in applications with heavy contamination concerns, this series of easy-to-install SAF replacement units offer corrosion protection in such environments. The single-piece housing offers solid composition, which ensures excellent mechanical integrity and shock stability. The spring-loaded contact seals and phosphate coated bearing inserts offer excellent contamination protection and corrosion resistance.

Green Line Series

The reliable performance and durable construction of NTN’s Standard/Green Lines Series bearings makes them a smart solution for practically all types of common applications. Green Line units’ unmatched selection of housing styles, insert types as standard makes it NTN’s tried and true Mounted Ball Bearing Unit Series.

Green Line units are available in both metric and inch shaft sizes throughout our set screw, eccentric, and adapter sleeve inserts. With bore sizes range from ½” to 4”, the Green Line is a highly versatile and industry interchangeable product line.

The cast iron bearing housing is designed to provide you maximum strength in even the toughest applications. With this strength, the ability to allow for misalignment of +/- 2° and relubrication capability, you just can’t go wrong.