Built on the foundation of NTN’s industrial-duty bearing unit line, Ultra-Class with Black Oxide adds premium features to ensure longer life and lower maintenance costs. The Ultra-Class series offers ultimate sealing, efficient locking, and integrated precision in one robust package.
The NTN SPW Heavy Duty block has been specially coated to resist corrosion and debris and features a one piece, rock solid ductile iron housing. The SPW is designed for quick “bolt in,” with industry standard base-to-base centre height and bolt hole positions.
Cups, cones and rollers of NTN tapered roller bearings are made from case hardened alloy steel to provide superior fatigue life and reliability. Premium steels are available for applications requiring extended life and high reliability. Premium steels, including consumable electrode vacuum melted (CEVM) steel or electroslag remelted (ESR) steel are available for applications requiring extended life and high reliability.