NPB Covers NTN'S Comprehensive Product Line

Tapered Roller Bearings

National Precision's offer of NTN tapered roller bearings utilize conical rollers and raceways, arranged so that the rollers and raceways meet at a common apex. The rollers are guided by contact between the large end of the roller and a rib on the inner ring. This provides high capacity for radial and single thrust loads.

Premium Brands, Premium Materials

We offer premium tapered roller bearings under the NTN and Bower® brand names. Most NTN and all Bower® tapered roller bearings feature case-carburized components. Cups, cones, and rollers are made from case-hardened alloy steel of "Bearing Quality" to provide superior fatigue life and reliability. Precise control of heat treatment, dimensions, and surface finish of the components further contribute to reliable bearing performance. So whether you're looking for an American-made, case-carburized inch series taper, or a metric series through-hardened variety, we have you covered with a proper fit for your application. Premium steels and heat treatments are also available for applications requiring extended life and high reliability.

NTN's Top TRB Stock Guarantee Program is the only guaranteed inventory stocking program in the industry, and is available exclusively to NTN distribution partners. The program guarantees that NTN will have the highest moving tapered roller bearing part numbers in stock, and offers several advantages to NTN customers:

Top SKUs guaranteed in stock-don't miss out on high volume movers.
Increase your inventory turns while reducing expensive carrying costs.
Improve your tapered roller bearing forecast accuracy by leveraging our guarantee

Ball Bearings

With more than ninety years of manufacturing expertise in ball bearings, NTN offers one of the industry's widest arrays of products to fit your application.

Our ball bearings are available to you off-the-shelf, in sizes ranging from 10 mm to 320 mm outside diameters. And with a virtually limitless variety of configurations of seals, shields, lubricants, internal clearances, and cage designs, there's no reason to go anywhere else for your ball bearing needs.

Needle Roller Bearings

Needle Roller bearings feature a smaller cross section, offer higher load capacity, greater rigidity and lower inertia forces to facilitate size and weight reductions in machinery. Needle Roller bearings are specifically designed to perform under severe conditions and can be interchangeable with sliding bearings. NTN offers Needle roller and cage assemblies on single or double row, solid or split cage in inch and metric sizes.

Mounted Units and Pillow Blocks

• Sentinel™ Series (Washdown/Food and Beverage)
• Ultra-Class™ Series
• Corrosion-Resistant Series

Regardless of your industry type, NTN offer a diverse series of mounted bearing units to fit your application. Whether for mining, construction, or food processing, NTN has the solution for your industry.

Mounted Mobility and Versatility

Regardless of your industry type, NTN offer a diverse series of mounted bearing units to fit your application. Whether for mining, construction, or food processing, NTN has the solution for your industry.

Sentinel™ Series (Washdown/Food and Beverage)

NTN's Sentinel Series is a premium line of stainless steel bearings and bearing units featuring food-grade solid lube with covers. The Sentinel line is designed for maintenance-free, washdown-resistant product lines in food and beverage applications. NTN's flagship line is designed specifically to decrease downtime and increase profitability.

All Sentinel Series products have 100% stainless steel inserts and ball bearings filled with H1 food-grade solid lube. The Sentinel line requires no maintenance for the life of the bearing- simply install and start saving time and money.

Food-grade solid lube is a polymer impregnated with H1 food-safe oil, which helps prevent lubricant washout. Oil is stored in a porous solid material that acts like a sponge and releases the necessary base oil to lubricated the components as it rotates. The entirety of the Sentinel Series line come standard with protective covers (caps) for units that provide additional protection against contaminants and moisture, while adding additional safety for maintenance personnel.

The Sentinel Series offers both stainless steel housings and thermoplastic housings.

Ultra-Class™ Series

NTN's Ultra-Class™ mounted unit line is the original solid base offering in our mounted bearing unit portfolio. It symbolizes our commitment to performance and reliability.

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 means excellent tightening torque characteristics without damage to the shaft-mounting surface.

Protection in both wet and dry particle environments is paramount when selecting a mounted unit solution, and the Ultra-Class™ series is up to the task, allowing for usage even in food-grade environments. Using a combined elastomeric seal in tandem with NTN's outer flinger design, each mounted unit exhibits a fan-like mechanism that keeps particles from getting near the inner ball bearing and raceways.

Corrosion-Resistant Series

The NTN Stainless Steel and Thermoplastic series of mounted units offer optimum performance for food-grade and related environments, with a strong focus on protection from oxidation, mold, bacteria, and chemical cleaning agents. Mounted-unit inserts have a stainless steel composition designed to withstand the aggressive cleaning and corrosive environments found within the food-processing industry.

The Corrosion Resistant series offers similar solid-base construction to the NTN Ultra-Class™ line, meaning excellent mount stability and impact resistance. Mounted-unit solutions are available in a wide array of configurations, including pillow block and two- or four-bolt flange styles. Protective endcaps can be ordered for additional protection, and are available in both Stainless Steel and Thermoplastic configurations.

Corrosion Resistant units feature USDA H1 grade grease, as well as a stainless steel bearing-unit insert composition that offers exceptional humidity resistance. NTN also offers solid-grade equivalent greases for higher temperature applications.

Cylindrical Roller Bearings

NTN offers premium cylindrical roller bearings under the NTN and Bower® brand names. Most NTN and all Bower® tapered roller bearings feature case-carburized components. If you are looking for an American-made, case-carburized inch series taper, or a metric through-hardened variety, NTN has you covered with the proper fit for your application.