NATIONAL SEALS part description

Engineered for optimal performance, the National® taper bearing cup delivers long-lasting durability.
National® Oil Seals & Bearings offer a full line of premium oil seals and bearings.
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National

Part Specifications

NAT BEARING TAPER CUP
Part Description Taper Bearing Cup
Cup Bore (Inch) 2.8750
Cup Bore (MM) 73.0250
Cup Length (Inch) 0.6875
Cup Length (MM) 17.4630
Cup Radius (Inch) 0.1250
Cup Radius (MM) 3.1750

With over 75 years of industry experience, National® Seals has established a rock-solid reputation as the most trusted brand of premium wheel-end solutions. It provides the global market with a comprehensive portfolio of high-quality, no-compromise bearings and sealing products for various applications across different industries. True to the brand’s commitment to quality, safety, and performance, its design team keeps pace with industry-leading, advanced technologies to incorporate innovative features and patented systems in every National® Seals product. Among the industry’s best-kept secrets created by National® Seals are the DYNAMIC EDGE® innovative technology, SureSignal™ technology, and Gold 38 Series with PTFE compound.

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